Materials Engineer Test Reviewer PDF

Materials Engineer Test Reviewer b) three weeks d) four weeks 1. Scales for weighing aggregates and cement shall be 10. The concrete samples should be stored in a moist accurate within____% throughout the range of use. Scales conditioned...

Materials Engineer Test Reviewer b) three weeks d) four weeks 1. Scales for weighing aggregates and cement shall be 10. The concrete samples should be stored in a moist accurate within____% throughout the range of use. Scales conditioned temperature within the range of____ until the shall be inspected and sealed as often as the Engineer may time of test. deem necessary to assure their continued accuracy. a) 18* C to 24* C c) 14* C to 24* C a) 1.0 % c) 0.5 % b) 15* C to 18* C d) 18* C to 28* C b) 1.5 % d) 2.0 % 11.This is used in soil stabilized road surface due to its high____ property, that is, it absorb and retain water. 2.When cement is placed in contact with the aggregate, a) Potassium Chloride c) Magnesium Chloride batches may be rejected unless mixed within_____ hours of b) Calcium Chloride d) Sodium Chloride such contact. a) 1.5 hours c) 0.5 hours 12.The mass % wear of soil aggregate used in cement/lime b) 2.0 hours d) 2.5 hours proportions should not be more than____ a) 40 % c) 45 % 3.When mixed at the site or in a central mixing plant, the b) 50 % d) 55 % mixing time shall not be less than______ nor more than____ unless mixer performance test prove adequate 13.The uniform rate at which the movable head of the CBR mixing of concrete in a shorter time period. machine travel is_____. a) 30 seconds nor more than 90 seconds a) 0.05 in / min c) 0.08 in /min b) 50 seconds nor more than 90 seconds b) 0.10 in /min d) 0.09 in /min c) 60 seconds nor more than 120 seconds d) 90 seconds nor more than 120 seconds 14.Cast in place concrete shall not be post – tensioned until at least____ and until the compressive strength has reached 4.The flow of water shall be uniform and all water should the strength specified. be in the drum by the end of the first____ seconds of the a) 7 days c) 14 days mixing period. b) 10 days d) 20 days a) 45 seconds c) 15 seconds b) 30 seconds d) 20 seconds 15.The penetration test is an indication of the____ of asphalt. 5.Concrete not place within____ minutes from the time the a) Consistency c) Hardness ingredients were charged into the mixing drum shall be b) Softness d) Flash Point used. a) 120 minutes c) 60 minutes 16. Specification requires one (1) Quality test for b) 150 minutes d) 90 minutes every____ of asphalt a) 20 tons c) 50 tons 6.When concrete is delivered in truck mixers, additional b) 200 tons d) 40 tons water may be added to the batch and additional mixing performed to increase the slump to meet the specified 17.The____ is the most commonly used method in the requirement if permitted by the Engineer, provided all these design and evaluation of bituminous concrete mixes. operation are performed within____ after the initial mixing a) Job mix formula c) Marshall operation and the water and cement ratio is not exceeded. Stability a) 30 minutes c) 45 minutes b) Design mix d) Extraction b) 15 minutes d) 60 minutes 18.Vibration shall operate a frequency of 8,300 to 9,600 7.A sample from a bituminous mix weighs 1000 grams. At impulses per minute under load at a maximum spacing extraction, it was found out that the dry aggregate weighed of____ cm. 950 grams. What is the % of asphalt by weight of mix? a) 30 cm c) 60 cm a) 5.2 % c) 5.4 % b) 50 cm d) 40 cm b) 5.0 % d) 4.8% 19.The specific gravity of Sodium Sulfate used in 8.The minimum penetration of the preservative with the soundness test for aggregate should be with in the range surface of the timber piles shall be____ of____. a) 150 mm c) 250 mm a) 1.151 to 1.174 c) 1.051 to 1.154 b) 200 mm d) 100 mm b) 1.250 to 1.178 d) 1.058 to 1.184 9.The contractor shall submit in writing a job-mix formula 20.The specific gravity magnesium sulfate solution used in for the mixture supported by laboratory test data along with soundness test for aggregate should be within the range samples of resources of components and viscosity – of____. temperature relationships to the Engineer for testing and a) 1.280 to 1.408 c) 1.295 to 1.308 approval at least____. b) 1.180 to 1.308 d) 1.195 to 1.318 a) two weeks c) one week  b) Direct shear test d) All of the above 21. Aggregate accounts for 92 – 95 % of the weight of the bituminous mixture asphalt accounts for 5 – 8 % of the 32. In concrete acceptance, core will be considered weight of the mix. The exact percentage to be used is adequate if the average strength of the cores is equal to determined by the_____ what? a) Trial mix c) Job mix a) 80% of specified strength & if no single core is less than b) Design mix d) Job order 75% of specified strength b) 90% of specified strength & if no single core is less than 22._____ is an indication that the asphalt mix is 80% of specified strength overheated. c) 85% of specified strength & if no single core is less a) Blue smoke c) Rising steam than 75% of specified strength b) Stiff appearance d) Mix slumps in truck 33. Before the cement is to be used, sampling must be done 23. In checking the temperature of the mix, the at least _____ before use. thermometer a) one week c) two weeks should be inserted into the mix at least____. b) 14 days d) 12 days a) 2 inches c) 4 inches b) 6 inches d) 6.0 mm 34. Asphalt cement shall not be used while it is foaming nor shall be heated at____ at anytime after delivery. 24._____ is applied on existing bit, or cement concrete a) 107* c) 120* surface with bituminous materials. b) 159* a) Bituminous Prime Coat c) Bituminous Seal Coat b) Bituminous Tack Coat d) Bituminous Surface 35. Moisture content of aggregate in bit mix shall not Treatment exceed____ of the time it is introduce into the mixing unit. a) 1.5 mass % c) 1 mass % 25. The solution used in the soundness test of aggregate b) 2.0 mass % shall be cooled to a temperature of 21 +or – 1* C and maintain at that temperature for at least _____. 36. Batching tolerance for Sand and Aggregate is____. a) 24 hours c) 48 hours a) 1 % c) 3 % b) 36 hours d) 18 hour b) 2 % 26. Proper compaction of the fill materials is very 37. Between stage of curing, concrete shall not be exposed important, as it will______. for more than how many hours? a) Increase the shear strength a) 24 hours c) ½ hour b) Decrease permeability b) 3 hours d) 72 hours c) Minimize compressibility d) All of the above 38. As a Materials Engineer, what will you do with major honeycombed area that is considered as defective work? 27.In which DPWH item is emulsified asphalt not suitable? a) Plaster a) Item 301 b) Payment of the concrete will be made an adjustment c) Item 304 c) Removed and replaced at the expensed of the b) Item302 contractor d) Item 308 39. If the strength of control specimen does not meet the 28. Unconfined compressive strength test is usually requirements and not feasible to obtain cores due to performed on ______. structural consideration, as a Materials Engineer what will a) Sandy soils c) Organic soils be your decision? b) Silty soils d) Clayey soils a) Removed and replaced b) Area will not be paid 29. Consolidation test is usually performed on____ samples c) Payment will be made at an adjusted price a) Disturbed c) Consolidated b) Undisturbed d) both a & b 40. After concrete has been placed, it is advisable to maintain fully welted and in position for how many hours? 30. A concrete core sample having a maximum height of a) 14 hours c) 72 hours less than _____ of its diameter before capping or height b) 24 hours d) 15 – 18 hours less than its diameter after capping shall not be tested. a) 93 % c) 95 % 41. Rock shall be excavated to a depth____ below sub b) 94 % d) 96 % grade within the limit of the roadbed a) 100 mm c) 200 mm 31. The cohesion and internal friction of soil is tested by b) 150 mm a) Tri axial shear test c) Bearing test  55. In soil, all boring shall be carried to a depth of at least____ below the proposed grade line. 42. Minimum penetration of all piles shall be____. a) 0.50 m c) 1.5 m a) 3 meter c) 7 meter b) 1.0 m d) 1.8 m b) 6 meter d) 4.5 meter 56. The test that determine pile bearing capacity by loading 43. Piles shall not be driven within 7 meters of concrete one or more pile and measuring settlement under load less than_____ old. is_____. a) 7 days c) 28 days a) Vane shear test c) Pile load test b) 14 day b) Plate bearing test 44. Paint contains_____ of pigment and_____ vehicle. 57. The weight of disturbed samples from hard auger or a) 20 % & 80 % c) 79 % & 21 % split spoon shall be at least____. b) 21 % & 79 % d) 80 % & 20 % a) 1 kg c) 10 kg b) 20 kg d) 100 kg 45. Minimum thickness of bedding materials beneath the pipe is_____. 58. Submission of sample for testing for cement is_____. a) 100 mm c) 200 mm a) 10 kg c) 15 kg b) 150 mm b) 20 kg d) 40 kg 46. Tolerance of gabion dimension is_________________. 59. The length of Shelby Tube of an undisturbed sample a) +/- 1% c) +/- 3 % is_____. b) +/- 2 % d) +/- 4 % a) 10” long c) 20” long b) 18” long 47. Minimum size of galvanized wire mesh is____________. 60. For small project where quantity of steel bars is 10,000 a) 2.0 mm c) 2.7 mm kg or less, what is the basis for acceptance of material? b) 2.2 mm d) 3.4 mm a) No testing c) Mill certificate b) P.E, certificate 48. Minimum density of gabions is___________. a) 1,000 kg/cu. m c) 1,400 kg/cu. m 61.______ determines the best combination of the material b) 1,200 kg/cu. m d) 1,500 kg/cu. m that will produce a potentially stable & durable mixture. a) Job mix formula c) Design of 49. Soundness loss of field gabions is_____. bituminous mix a) 9 % after 5 cycles c) 11 % after 5 cycles b) Marshall formula b) 10 % after 5 cycles d) 12 % after 5 cycles 62._______ is the rate of loading for concrete cylinder 50. The heating temperature of reflector zed thermoplastic sample subject to compression test material during application is_____ a) 20 - 40 psi/sec c) 15 – 40 psi/sec a) 130 +/- 7* C c) 200 +/- 7* C b) 20 - 50 psi/sec d) 15 – 40 psi/sec b) 150 +/- 7* C d) 211 +/- 7* C 63. I n a soil exploration, if the characteristic of rock is 51. Submission of sample minimum quantity of material questionable, the minimum depth of boring into the for asphalt cement is-------. bedrock should be_______. a) 5 kg c) 20 kg a) 1.5 m c) 2.5 m b) 10 kg d) 100 kg b) 2.0 m d) 3.0 m 52. For how many years does the small Contractor given to 64. Determine soil bearing capacity by loading a steel plate procure necessary testing equipment? usually 30” diameter. a) 2 years c) 5 years a) Vane shear test c) Pile load test b) 4 years d) 6 years b) Plate bearing test d) None of the above 53. The depth of the weakened joints must not be less 65. How many hours do aggregate stockpile or binned for than____ and a width of ___. draining before being batch? a) 40 mm & 6 mm c) 40 mm & 5 mm a) 1 hour c) 12 hours b) 50 mm & 5 mm d) 50 mm & 6 mm b) 6 hours d) 24 hours 54. Used of bituminous cold mix for potholes patching 66. What is the relative strength of mortar at 7 & 28 days of during rainy/ wet period is acceptable fine aggregates, when tested for the effect of organic a) false impurities, which is higher than the standard? b) true a) not less than 90 % c) not less than 95 % b) not less than 80 % d) not less than 98 % 67. What is the rate of loading for concrete beam tested for 79. How many gradation ranges for hot plant mix flexural stress? bituminous pavement are there in the blue book? a) 110 – 150 psi/sec c) 125 – 175 psi/sec a) 5 c) 7 b) 115 – 150 psi/sec d) 130 - 175 psi/sec b) 6 d) 8 68. In concrete sampling paste shall be of normal 80. What is the plasticity index of mineral filler? consistency of_____ when the rod settles to a point below a) not greater than 4 c) not greater than 8 the original surface in 30 secs. b) not greater than 6 d) zero a) 10 +/- 1 mm c) 15 +/- 1mm b) 11 +/- 1 mm d) 20 +/- 1 mm 81.I f no core had been taken at the end of each day of operation and the project has already been completed, a 69. What the temperature of a concrete sample? core shall be taken ________. a) 10 – 15 * C c) 15 – 18* C a) for every 75 l.m,/lane c) for every 100 l.m/lane b) 18 – 24 * C b) for every 150 l.m/lane d) for every 1,000 l.m/lane 70. What is the wash loss of fine aggregates in the no. 200 82.________ is the slump of workable concrete if vibrated. sieve? a) 10 – 20 mm c) 40 – 50 mm a) 1 % c) 3 % b) 10 – 40 mm d) 40 – 75 mm b) 2 % d) 4 % 83.________ Burnt product which is used by Gypsum and 71. Retarder can delay the setting time of concrete up to pulverized to form Portland Cement. how many hours? a) Hydraulic cement c) Fly Ash a) 1 hour c) 4 hours b) Clinker d) Volcanic Ash b) 2 hours d) 8 hours 84. When group index = 0, what is the grade of soil? 72. Super plasticizer can increase the strength of concrete a) weak soil c) good soil up to how many percent? b) poor soil a) 40 – 60 % c) 50 – 70 % b) 50 – 60 % d) 60 – 70 % 85.______ is a process of breaking down of rocks into small pieces of various size that can range from large 73.___________ is the moisture in an air – dried soil boulders to very small clay particles. a) Moisture Content a) Consolidation c) Weathering b) Natural Moisture Content b) Unconsolidation c) Hygroscopic Moisture Content d) Hydrometer Moisture Content 86.________ is the limit were further loss of water due to evaporation which will not result in reduction of volume. 74._________ is the tolerance of mix in bituminous. a) Plastic limit c) Shrinkage limit a) 10* C c) 15* C b) Liquid limit b) 12* C d) 18* C 87.________ a classification of soil which 35% or less the 75._________ Number of measurement taken in a core particles pass through no. 200 sieve. sample for thickness determination of the finish asphalt a) Grain size soil c) Silty clay materials pavement b) Granular materials d) Clayey materials a) 3 c) 5 b) 4 d) 8 88.________ a classification of soil which 35% or more of the particles pass through no. 200 sieve 76. In the absence of beam mold in site, cylinder mold is a) Course Sand Soil c) Silty-Clay Materials allowed by specification. What is the required strength? b) Granular Materials d) Clayey Materials a) 2,500 psi c) 2000 psi b) 3,000 psi d) 4,000 psi 89. It evaluate the quality of soil as highway subgrade material. 77. Prime coat shall be left undisturbed for at least_____. a) Atterberg Limit c) Group Index a) 6 hours c) 24 hours b) Plasticity Index d) Liquid Limit b) 12 hours 90. When soil has plasticity index value of 10, what is the 78. The first phase of rolling the spread bituminous mix is criteria of the material? called breakdown rolling which is carried out by pneumatic a) Coarse grain c) Clayey roller, temperature requirement must be_____. b) Sandy d) Silty a) 200 – 225* F c) 160 – 180* F b) 190 – 199* F d)150 – 185* F 91. When plasticity index is equal a) Coarse grain c) Clayey b) Sandy d) Silty 105. ________ is a type of soil in which most of the soil 92._____is an empirical number used in evaluation for G.I. grains are of the same size. a) 0 – 15 c) 0 – 20 a) Poorly graded c) Gap graded b) 5 – 20 d) 0 – 25 b) Well graded d) Non of the above 93. It indicates good subbase materials when G.I. is equal 106. The soil grained are force apart by the water added, to_____. thus the grain is reduced, what is the method used? a) 0 c) 10 a) Lubrication c) Swelling b) 5 d) 20 b) Welting d) Saturation 94.It indicates very poor subbase materials when G.I. is 107. Percent passing loose for coarse aggregates when equal to _____. tested for clay lump is _____. a) 0 c) 10 a) 0.1 mass percent c) 0.8 mass percent b) 5 d)20 b) 0.25 mass percent d) 1.0 mass percent 95.______ indicates the composition of soil. 108. The mass percent passing loose for coarse aggregates a) Atterberg Limit when tested in soft fragment is____. b) Plasticity Index a) 0.10 c) 3.5 b) 0.25 d) 1.00 96. The higher the value of PI of the soil, the weaker will be the soil performance as a_____. 109. If slag is used, the density of coarse aggregate a) True c) Depend is______. b) False d) None of the above a) 30 – 100 kg/cu. m c) 1,120 kg/cu. m b) 150 kg /cu. m d) 1,400 kg/cu. m 97._______ the Plasticity Index of group of soil a) 0 c)10 110. Mass percent loose for fine aggregates when tested in b) 6 d) 11 Clay lumps is_____. a) 0.10 c) 0.80 98._______ is the minimum percent of A-6 group b) 0.25 d) 1.0 classification of soil. a) 0 % c) 35 % 111. _________ is a type of cement which shall be b) 25 % d) 36 % transferred to an elevated, air tight and weather proof bins storage. 99._______ is the maximum of G.I. of Silty Clay Materials a) Portland Cement c) Bulk Cement a) 0 c)2 0 b) Pozzolan Cement d) None of the above b) 25 d) 35 112. Scales for weighing aggregates and cement shall be 100. When the value of G.I. is negative, what will be the accurate within_____. soil performance? a) 0.1% c) 0.5% a) Poor Subgrade c) Good subgrade b) 0.25% d) 1.9% b) Very good subgrade d) None of the above 113. The minimum thickness of conventional concrete as 101. The weight of Sandy soil for Hydrometer Analysis the surface course in monolithic pavement is_____. is______. a) 50 mm c) 100 mm a) 10 grams c) 50 grams b) 75 mm d) 150 mm b) 25 grams d) 100 grams 114. _____________ determines the resistance of the 102. The weight of Clayey or Silty soil for Hydrometer emulsion to break when mixed with mineral aggregate. Analysis is______. a) Viscosity Test c) Spot test a) 10 grams c) 50 grams b) Distillation Test d) Cement Mixing b) 25 grams d) 100 grams 115. _____________ is an instrument used for rapid in – 103. A 25 grams fine grained soil can be dried in site measurement of the structural properties of existing about______. road pavement. a) 1 hour c) 3 hours a) Pundit Ultra Sonic Concrete Tester b) 2 hours d) 4 hours b) Dynamic Core Penetrometer c) Falling Weight Deflectometer 104. A 25 grams sandy soil can be dried in about______. d) Core Test a) 1 hour c) 3 hours b) 2 hours d) 4 hours  127. The completed pavement shall be accepted on a lot basis. A lot shall be considered as_500 _ linear meter 116. How many days does the emulsified asphalt must be double lane tested after delivery at temperature 40*F(4.5*C). a) 10 days c) 14 days 128. Each lot shall be divided into _5_ equal segment and b) 12 days d) 16 days one core will be obtained from each segment in accordance with AASHTO T24. 117. In bituminous mixture asphalt content is 5 – 8% and 92 - 95% aggregates, what will be the amount of additives? 129. Aggregate account for 92 – 95% of the weight of the a) not more than 2% c) more than 2% bituminous mix while asphalts for 5 – 8% of the weight of b) not more than 3% d) more than 4% the mix. The exact percentage to be used is determined by the _Job Mix Formula_. 118. ___________ determines the effect of water on the cohesion of the mixture 130. Blue smoke_ is an indication that the asphalt is over a) Stability Test c) Distillation heated b) Solubility d) Immersion-Compression Test 131. The penetrator test is an indication of the Consistency of the asphalt 119. The distance of the sample by grooving before rotating the brass cup is _____. 132. Marshall Stability Test is the most common used a) ¼” c) ¾” method in the design and evaluation of bituminous concrete b) ½” d) 1” mixes 120. The most common method of assessing strength and 133. Extraction Test_ determines the asphalt content in stiffness of both subgrade and pavement is_______. the bituminous mixes. a) FDT c) SPT b) CBR d)Non of the above 134. Cast in place concrete shall not be post-tensioned until at least _10_ days and until the compressive strength has 121. How many days do the specimen for CBR soaked? reached the strength specified a) 1 day c) 3 days b) 2 days d) 4 days 135. This is the characteristic generally used for calculation of the volume occupied by the aggregate in various mixture 122. When mixed at the site or a in central mixing plant, containing aggregates including Portland Cement concrete, the mixing time shall not be less than _50__ seconds nor bituminous concrete, and other mixtures that are more than _90_ seconds unless mixer proportioned or analyzed on an absolute volume basis. performance test prove adequate mixing of the concrete in Answer: Bulk Specific Gravity a shorter time period. 136. Apparent Specific Gravity_ pertains to the relative 123. The batches shall be so charged into the drum that a density of the soil material making up the constituents portion of the mixing water shall enter in advance of the particle not including the pore space within the particles cement and aggregate. The flow of water shall be uniform that is accessible to water. and all water should be in the drum by the end of the _15_ seconds of the mixing period 137. Weight of sandy soil needed for Hydrometer test is _100 grams_ 124. The time elapsed from the time water is added to the mix until the concrete is deposited at the site shall not 138. Weight of silty or clayey soil needed for Hydrometer exceed _90_ minutes when concrete is hauled in the truck. test is _50 grams_ 125. When concrete is delivered in truck mixers, additional 139. These are widely used to control the characteristics of water maybe added to the batch and additional mixing soil which are to be incorporated in roadway. Ans. Liquid performed to increase the slump to meet the specified and Plastic Limits requirement if permitted by the Engineer, provided all these operation are performed within _45_minutes after the 140. This is defined as the highest moisture content of initial mixing operation and the water and cement which the mass attains its minimum volume but continues ratio is not exceeded to lose weight /mass. Ans. Shrinkage Limit 126. Concrete not placed within _90_ minutes from the 141. Le Chattelier Flask___ is an apparatus used in time the ingredients were charge into the mixing drum determination of specific gravity of Hydraulic Cement. should not be use. 142. Autoclave Machine_ is an equipment used in determination of soundness of Portland Cement 143. Asphalt shall be homogeneous, free from water, and shall not foam when heated to _175* C (347* F)_ 161. _______ is used to determine the soil strength parameter. Ans. Unconfined and Tri-Axial Compression Test 144. Cement Mixing Test of Asphalt_ indicate the rate at 162. ________ is used to determine the settlement which the asphalt emulsion will break when mix with characteristic of soil. aggregate. Ans. Consolidation 145. 163. The weight of disturbed samples from hard auger or The lost in weight of rock used in gabions when tested to split spoon shall be at least__________ sodium sulfate, soundness loss shall not exceeds__9%__ Ans. 1.0 kg 146. Gabions dimensions are subject to a tolerance limit of 164. The undisturbed samples from Shell by Tube shall be _+/- 3%_ at least______. Ans.. 18” long 147. The pour point of concrete joint sealer shall be at least1 1*C (20*F)lower than the safe heating temperature, 165. _______ determines the pile bearing capacity by which is the maximum temperature to which the material loading one or more piles and measuring settlement under may be heated without exceeding the permitted flow. load. Ans. Pile Load Test 148. The penetration of concrete joint sealer, Hot Poured Elastic Type shall not exceed_90_ 166. ________ determines the in-site shear strength of soft to medium clay. 149. The CBR is generally selected at _2.54 mm (0.10 in)_ Ans. Vane Shear Test penetration. 167. _______determine the soil bearing capacity by loading 150. If the ratio at 5.08 mm (0.21 in ) penetration is greater, a steel plate usually 30 inches in diameter. the should be _Rerun_ Ans. Plate Bearing Test 151. If the check test gives a similar result, the ratio at 5.08 168. Laboratory which measures, examines, calibrate or mm penetration shall be__adopted or used__ otherwise determine the characteristic or performance materials or products. 152. The penetration piston of CBR machine should have a Ans.. Testing Laboratory uniform penetration at a rate of __1.30 mm/min__ 169. Standard technical procedure to determine one or 153. During soaking maintain the water level in the mold more specified characteristic of material product is and the soaking tank is approximately __25.40 mm (1.0 in called___. )__ above the top of the specimen Ans. Test Method 154. Soak the specimen for _96 hours ( 4days )__ 170. A document which prevents the test results and other 155. The diameter of penetration piston is____. information relevant to test is called_____ Ans. 49.63 +/- 0.23 mm ( 1935 cu m ) Ans. Test Report 156. The temperature of the asphalt cement delivered to the 171. __________is a document signed by the Director of mixer shall be as required to achieve a kinetic viscosity in BRS issued to Testing laboratory authorizing them to the range of______. perform the required test in behalf of DPWH. Ans. 150 to 300 cu m/s or 150 to 300 centistokes Ans. Certificate of Accreditation 157. ______ is the viscosity used to grade asphalt cement. 172. This test have been developed to measure the loss of Ans. 149 F ( 60*C ) cohesion as a result of water action on the compacted bituminous mixture. 158. The coarse aggregate used in asphalt mix is____. Ans. Film Stripping & Immersion – Compression Test Ans. Retained by 2.36mm (no 8 sieve) 173. This mean porosity or perviousness of the mixture, a 159. The application temperature of emulsified asphalt dense grade mix prevent water from entering the base range from____. through the surface. Ans. 10-71*C Ans.. Permeability 160. When the tar is used for seal coats, it shall be heated to free flowing but not to exceed___________. Ans. 149*C 174. This is used in classifying liquid asphalt into grades. It 186. The bottom bearing block shall be at least_______ is useful as a measure to control of consistency, particularly thick after any resurfacing operations.. when run at the temperature of intended application Ans. 0.9” ( 22.50 mm ) Ans… Viscosity Test 187. The curing temperature of a specimen before testing is______. Ans. 18*C to 24*C 175. This test determines the total bitumen content of a 188. The apparatus used to determine the flash point of asphaltic materials, which is the actual cementing asphaltic material is called____ constituent of the asphalt. Ans. Cleveland Open Cup Ans.. Solubility Test 189. The asphalt samples for ductility and penetration test 176. This is an accelerated test to show the loss of volatiles should be subjected to water bath at a temperature of 25*C when the sample is heated at 163*C for five hours and the for____. loss due to volatilization is determined. Ans.. 11/2 hours Ans… Loss on Heating 190. The concrete shall not be left exposed for more 177. This test classifies the different asphalt into types and than____ hour between stages of curing or during the the different types into grade. curing period. Ans.. Consistency Test Ans.. ½ hour 178. For liquid asphaltic materials, this test is run on the 191. The rate of application of bituminous prime coat residue after distillation.. is____. Ans.. Quality Test a) 1-2L/sq. m. c) 0.2-1.5L/sq. m. b) 0.2-0.7L/sq. m. d) 0.5-2L/sq. m. 179. This is one of the most important engineering properties of soil. It is defined as its ability to resist sliding 192. Another name for asphalt joint filler is_______. along internal surface within the mass.. a) asphalt cement c) blown asphalt Ans.. Shearing Strength of Soil b) rock asphalt d) cutback asphalt 180. This is an arbitrary measurement of consistency and is 193. In asphalting work, there are_______ phase of rolling the basis of classification of all solid and semi-solid a) 2 c)1 asphalt. b) 3 d) 4 Ans.. Penetration Test of Asphalt 194. The_____ test determines the asphalt content in the 181. This is a process to measure the consistency of liquid bituminous mix. asphaltic materials to determine their fluidity or resistance a) Grading c)Extraction to flow. b)Bulk Specific Gravity d) Absorption Ans.. Viscosity Test 195. In a bituminous mix, there are 3 kinds of aggregate. 182. _________ was developed in order to differentiate What kind of passes the no. 200 sieve? bituminous materials with respect to hardening a) Coarse c) Mineral Filler characteristic. b) Fine d) Admixture Ans.. Thin Film Oven Test 196. Liquid asphalt is also called___________. 183. Plant-mixed bituminous mixtures should be sampled a) Cutback asphalt c) Blown asphalt in accordance with the Standard Method of Sampling b) Emulsion d) Asphalt cement Bituminous Mixture. A sample not less than______ kg is taken and place in sample bag that would insure against 197. The different test for soil classification are: contamination. This is taken every 75 cu m or 130 tons of a) compaction and FDT mix. b) Hydrometer test and moisture content Ans.. 10 kgs c) Grading, LL and PL test 184. The bearing blocks of the compression machine 198. The apparatus/equipment used in the liquid limit and should be at least_____ greater than the diameter of the plastic limit test is called___. specimen. a) sieves and chisel c) mortar and pestle Ans.. 3.0 % b) Atterberg Device and glass plate 185. The bottom bearing block shall be at least_____ thick 199. _________ is a method of laboratory sampling. when new a) Mixing c) Proportioning Ans. 1.0” ( 22.50 mm ) b) Using mechanical splitter/quartering 200. In laboratory compaction test/moisture density relation test, what is the specification of rammer? 211. The minimum compressive strength for class A a) 5.5 lb. (2.5 kg) with 12 in drop concrete is ________. b) 10 lb. (4.5 kg) in weight with 18 in drop a) 3,000 psi. ( 20.7 MN/sq m ) c) 8 lb. (3.6 kg) in weight with 16 in drop b) 2,400 psi. ( 16.7 MN/sq. m. ) c) 5,000 psi. ( 37.7 MN/sq. m. ) 201. What is the specification of mass present passing in 212. What is the significance of determination of the tensile sieve 0.075 mm (No.200 ) grading “A” for aggregate base properties of reinforcing steel bars? course. a) This method is intended to determine the a) 20-14 c) 0 – 6 yield and tensile strength of the bar as well as its b) 0 – 12 elongation, and is used to classify the bars into grade b)This method is intended to evaluate the ductile properties 202. The number of specimen samples in testing concrete of the reinforcing bars hollow block is _____. c) None of the above a) 6 pcs./20,000 units (3 for absorption test and 3 for strength test ) 213. A tie bar should be______ b) 4 pcs./20,000 units a) deformed bar c) 8 pcs./20,000 units b) round bar c) flat bar 203. Is it really necessary to cure concrete specimen? a) Yes c) No 214. A dowel bar should be____________. b) None of the two a) deformed bar b) round bar 204. The kind of test that determines the consistency of c) flat bar concrete is _____. a) Slump test c)Abrasion test 215. The mortar for masonry shall consist of________. b) Specific Gravity a) one part Portland Cement and 2 parts of sand b) one part Portland Cement and 3 parts of sand 205. What is the dimension of concrete cylindrical sample? c) one part Portland Cement and 4 parts of sand a) 6” dia. And 12” high c) 8” dia. And 14 high b) 4” dia and 8” high 216. The apparatus used to measure the thickness or height of compacted bituminous paving mixture. 206. In the absence of concrete beam mold at the project a) Ruler site, are concrete cylindrical molds allowed by the b) Vernier Califer specification to be used in sampler for item 311 – PCCP? c) Steel Tape a) Yes b) may be 217. It is used in calculating the unit weight of the mixture c) No and the degree ofcompaction of the asphalt pavement. a) Bulk Specific Gravity of compacted bituminous 207. The minimum percent compaction for embankment mixtures using saturatedsurface dry specimen. is_______. b) Dry unit weight of compacted bituminous mixtures a) 92% c) 95% c) Mass of specimen in water b) 97% 218. The test which covers the quantitative determination 208. The minimum percent compaction for base of the road of bitumen in hot- mixed paving mixtures and pavement is______. samples for specification acceptance, service evaluation, a) 100% control and research. b)110% a) Extraction c) 105% b) Spot Test c) Flash Point 209. The CBR value of aggregate base course is not less than____. 219. The solvent used in extraction of bitumen is_____. a) 80% a) Diesel oil b) 90% b) Gasoline c) 85% c) Water 210. The CBR value of aggregate subbase course is not less 220. The percent of bitumen content is computed based than____. on______. a) 25% a) mass of raw sample b)35% b) mass of dry aggregate c) 30% c)mass of asphalt 221. The method used to determine the grading of 231. A property of asphalt cement to stretch without aggregate extracted from bituminous mixture is____. breaking is called________. a) Mechanical analysis of extracted aggregate a) Ductility b) Stability Test b) Durability c) Viscosity c)Tensile 232. It is a point where the volatile components of asphalt 222. The drying temperature of sample is________ will evaporate. a) 110 +/- 5*C a) Fire Point b) 100 +/- 5*C b) Flash Point c)100*C c) Center Point 223. _______ is a solid asphalt which is a basic constituent 233. It determines whether asphalt is over heated or not of all other asphalt called as hot asphalt or penetration during the process of manufacture. grade asphalt. a) Spot Test a) Asphalt Cement b) Boil Test b) Emulsified Asphalt c) Extraction Test c) Cutback Asphalt 234. An apparatus used to determine the specific gravity of 224. ________ is a kind of liquid asphalt which is a asphalt is called______. mixture of asphalt cement and kerosene. a) Metal Pycnometer a) Medium Curing Cutback b) Glass Pycnometer b) Asphalt Cement c) any bottle c) Rapid Curing Cutback 235. Consistency test for asphalt is called___________. 225. ________ is a kind of liquid asphalt which is a a) Viscosity mixture of asphalt cement and oil. b) Slump test a) Slow Curing Cutback c) Loss in ting b) Emulsified Asphalt c) Blown Asphalt 236. A process of volatilization test which measures the relative proportion of asphalt to oil. 226. ________ is a kind of liquid asphalt which is a a) Distillation mixture of asphalt cement and gasoline b) Extraction a) rapid Curing Cutback c)Float Test b) Blown Asphalt c) Joint Filler 237. It is a period wherein the asphalt begins to melt. a) Softening Point 227. Asphalt is defined as_________. b)Boiling Point a) A petroleum product c)Fire Point b) A dark brown to black cementitious materials whose consistency ranges from solid to semi-solid and whose 238. The sampling requirement of asphalt is_____. main constituent is called bitumen which a) 1 sample for every 200 drums or 40 metric tons is either found in nature or as a residue in petroleum b) 1 sample for every 100 drums refining. c) 1 sample for every shipment c) None of the above 239. The component of bituminous mixes which range 228. It is a kind of liquid asphalt which is a mixture of from 92 to 96% is called__________. asphalt cement and water with emulsified with pungent a) Bituminous Blended Aggregate odor. b) Concrete Aggregate a) Emulsified Asphalt c) Sand b) Asphalt Cement c) Rapid Curing Asphalt 240. ____________ is a property of bituminous mixes in pavement to resist deformation or displacement due to 229. Joint filler in concrete pavement is a__________. impose load or repeated loading. a) Blown Asphalt a) Stability b) Hot asphalt b)Flexibility c) Liquid asphalt c)Tensile 230. A device used to measure the relative hardness of asphalt is__________. a) Penetrometer b) Spectometer c) Vicat Apparatus 241. ____________ is a property of bituminous mixes in 251. The rate of application of tack coating using liquid or pavement to resist disintegration or deterioration due to the emulsified asphalt is__________. action of water, traffic and changing climate a) 0.2-0.7 li/sq.m a) Durability b) 0.1-0.5 li/sq. m b) Flexibility c) 2 li/sq. m. c)Ductility 252. The rate of application of seal coat using asphalt cement is ________. 242. ____________ is a property of bituminous mixes in a) 0.9-1.8 li/sq. m pavement adjust itself to settlement b) 10-11 li/sq. m a) Flexibility b) Rigidity c) Hardness c) 8-9 li/sq. m 243. These are the factor affecting the workability of bituminous mixes 253. The rate of application of seal coat using cutback a) Gradation of aggregate, quality of asphalt, and asphalt is ________. temperature of mix a) 1.5-3.0li/sq. m b) Surface texture and temperature mix b) 2.0-3.0 li/sq. m c) Quantity of aggregates and asphalt content c) 1-2 li/sq.m 244. The dry molded asphalt sample in the immersion 254. The primary quality control mechanism for the compression test is submerged in water for____. production of asphalt mixtures with high degree of a) 4 days uniformity that will satisfy job requirement b) 4 hours is________________. c) 2 days a) Job mix formula b) Quality control formula 245. The percent index retention is computed in the c) Assurance formula___________. a) Wet Stability/Dry Stability x 100 255. The objective of designing the asphalt mixture is b) Dry Stability/Wet Stability x 100 determination of ______. c) Wet Stability – Dry Stability/Dry Stability x 100 a) Type and grade of asphalt, proportion of coarse, fine and mineral filler, if used and asphalt content. 246. The sampling requirement of bituminous mixes b) To produce a desirable characteristic of pavement which is_____. are stable, durable, flexible and skid resistance. a) 1 sample for every 75 cu. m. c) All of the above b) 1 sample for every 150 cu. m. c) 1 sample per delivery per day 256. The percent asphalt content in hot laid bituminous mixture range from______ 247. The application of liquid asphaltic material on a a) 5-8% prepared untreated base b) 4-6% is_____. c) 5-10% a) Prime Coating b) Seal Coating 257. The placing temperature for bituminous mixture c) Tack Coating measured in the truck prior to dumping is______. a) at least 107*C 248. The application of liquid asphaltic material to an b) at least 120*C existing surface is____. c) at least 150*C a) Tack Coating c) Prime Coating 258.The second phase of rolling the spread bituminous b) Seal Coating mixture is called breakdown rolling which is the one responsible to attain the maximum density. This rolling is 249. The application of asphaltic material and aggregate to carried out by the use of______. an existing surface for the purpose of sealing it against the a) pneumatic roller infiltration of water or surface moisture is called____ b) steel roller a) Seal Coating c) sheepfoot roller b) Tack Coating c) Prime Coating 259. The significance of final rolling is to remove the roller marks to previous rolling in order to have a good finish 250. The rate of application of prime coating using cutback pavement with a temperature of 160*F. asphalt is ______. a) True a) 1-2 liters/sq. m b) False b) 0.5-1 liter/ sq. m c) Maybe c) 2-3 liters/sq. m 260. The proper way of rolling should begin 269. If the fine aggregates are subjected to five cycles of at_____________________. sodium sulfate soundness test, the weighted loss shall not a) the sides and proceeds longitudinally towards the exceed ___________ roads center, each strip overlapping on half the roller a) 10 mass percent width, gradually progressing the crown of the road b) 5 mass percent b) the center and proceeding longitudinally toward the side c) 3 mass percent of the road c) any part of the road provided each strip overlapping on 270. If the coarse aggregate are subjected to five cycles of half the roller width sodium sulfate soundness test, the weighted loss shall not exceed____________. 261. What is the minimum degree of compaction of asphalt a) 12 mass percent pavement? b) 15 mass percent a) not less than 97% of the density of the laboratory c) 10 mass percent compacted specimen b) not less than 100% of the density of the laboratory 271. The mass percent of wear of coarse aggregates for compacted specimen item 311when tested by AASHTO 96 is not greater c) not less than 85% of the density of the laboratory than____________. compacted specimen a) 40% b) 45% 262. What is the color of asphalt when it is overcook? c) 50% a) yellowish brown b) black 272. The design of concrete mix specified by the blue book c)gray is based on ________________. a) Absolute Volume Method 263. _____________ determines the thickness and density b) Area Method of compacted asphalt pavement. c) American Method a) Core test b) FDT 273. The minimum flexural strength requirement of beam c) X-ray sample when tested by third point loading method is____________. 264. The cored sample of asphalt pavement is measured a) 3.5 Mpa at______________. b) 3.8 Mpa a) approximately quarter points c) 4.0 Mpa b) three points c) two points 274. The minimum flexural strength requirement of beam sample when tested by midpoint method is____________. 265. Too much asphalt content in the bituminous mixes a) 4.5 Mpa causes____________. b) 3.5 Mpa a) bleeding c) 5.0 Mpa b) potholes c) cracks 275. ____________ are additives used in mixing concrete. a) sodium chloride 266. The wearing away of the pavement surface caused by b) admixtures the dislodging of aggregate particle is c) curing agent called______________. a) raveling 276. ____________ determines the consistency of concrete. b) alligator crack a) Slump Test c) rutting b) consolidation test c) viscosity 267. Interconnected cracks forming a series of small blocks resembling an alligator’s skin or chicken wire is 277. Equipment used in the consolidation of fresh concrete. called____________. a) jack hammer a) alligator cracking b) vibrator b) reflection cracking c) drilling machine c) bleeding 278. The prescribed forms to be used in concrete paving is 268. __________ is the type of cement to be used in the called____________ DPWH infrastructure project as indicated in the Blue Book. a) steel forms a) Portland Cement Type I b) wooden b) Pozzolan Cement Portland c) combination of steel and wood c) Cement Type II 279. The initial setting time of Portland cement is not less 289. The standard dimension of concrete cylindrical sample than _________________. is ___________. a) 30 min. a) 6” dia. and 12” tall b) 60 min. b) 6” dia. and 6” tall c) 90 min. c) 6” dia. and 8” tall 280. The final setting time of Portland cement Type I 290. There are two layers in performing sampling of beam is_____________. samples. How many number of blows are required per a) 10 hrs. layer? b) 24 hrs. a) 63 blows c) 36 hrs. b) 75 blows c) 50 blows 281. The standard sand used in testing the mortar strength 291. There are three layers in performing sampling of of Portland cement is called__________. concrete cylinder. How many blows are required per layer? a) Ottawa Sand a) 25 blows b) Beach Sand b) 30 blows c) River Sand c ) 35 blows 282. The apparatus used in determining the fineness of 292. The formula which determines the proportion of the Portland cement by air permeability is__________. mix which can meet the desired strength requirement of a) Blaine Air Permeability Apparatus concrete is called____________. b) Sieve No. 200 a) design of concrete mix c) Gillmore b) Boyle’s Formula c) Bernouli’s Formula 283. A mixture of cement and water is called____________. 293. The minimum testing requirement for every project is a) cement paste indicated in a duly approved________. b) mortar paste a) Quality Control Program c) concrete paste b) Program of Work c) Work Schedule 284. The apparatus used to determine the initial and final setting of cement in the laboratory is_________. 294. It is prescribed in each project based on estimated a) Gillmore needles quantities and specifies the kind and number of test for b) Bailey needle each item of work. c) Vicat apparatus a) Minimum number of work b) Minimum Testing Requirement 285. The compressive strength of cement mortar sample in c) Work Schedule seven days is not less than_________. a) 19.3 MN/sq. m 295. Embankment materials delivered at the job site was b) 20 MN/sq. m about 12,000 cu. m. The minimum test requirement calls c) 24 MN/sq. m for 1 – G, P, C for every 1,500 cu. m. a) 10 – G, P, C 286. What is the appearance of the molded cement paste b) 8 – G, P, C which fails to meet the autoclave c) 6 – G, P, C expansion.______________. a) crumble 296. There is 1 – Q cement required for b) shiny every_________________. c) changes color a) 4,000 bags or fraction thereof b) 2,000 bags or fraction thereof 287. c) 10,000 bags The dimension of beam sample for paving concrete is___________. 297. There is – Q of cement required for a) 6” x 6” x 21” every____________________. b) 6” x 6” x 24” a) 20,000 kg or fraction thereof c) 4” x 4” x218” b) 10,000 kg or fraction thereof c)115,000 kg or fraction thereof 288. The critical number of days of curing concrete is____________. 298. How many set of beam samples taken for every 75 cu. a) first seven days m. of concrete poured per day? b) first 10 days a) one ( 1 ) set c) 28 days b) two ( 2 ) sets c) Three ( 3 ) sets  a) 7 days after pouring 299. In a completed pavement, what is the minimum core b) 21 days after pouring samples required before payment is effected? (Assuming c) 14 days after pouring that the thickness is 23 cm. ) d) 28 days after pouring a) Five holes per km per lane b) One hole per 500m 309. In casting reinforced concrete railings, the concrete c) P.E. Certificate used is _____________. a) Class A1 c) Class C1 300. In a Barangay road, what is the minimum requirement b) Class A2 d) any of the preceding classes for thickness determination of its completed pavement? a) Five holes per km per lane 310. For efficient compaction, the embankment materials b) P.E. Certificate c) One hole should at the time of rolling be______. 301. A quality test is one of the minimum requirement for a) dry c) at optimum moisture content item 200 – aggregate subbase course. b) wet d) at maximum moisture content a) True b) False 311. For a road base course the most preferable material is c) optional one with CBR of ____________. a) 60 c) 50 302. There is no CBR test for item 300 – aggregate surface b) 30 d) 80 course. a) True 312. Peat and muck are______________. b) False a) fair subgrade spoil c) unstable soil c) optional b) stable soil d) good subgrade soil 303. In item 311 and 405, grading is 313. The slump test on concrete is a perform_______________. measure______________ a) for every 75 cu. m. a) strength c) consistency b) for every 300 cu. m. b) unit weight d) durability c) none 314. The fineness modulus is highest 304. For pipe culverts and storm drains, the minimum test of_________________. is 1 – Pipe for every 50 pipes. What is the alternative a) fine sand c) very coarse sand requirement? b) very fine sand d) coarse sand a) 1 – set consisting of 3 concrete cylinder samples for not more than 25 pipes cast in the field and 1 – 315. inspection report for each size for not more than 25 If concrete is continuously moist cured, it will gain strength pipes cast in the field. beyond 180 days. b) inspection report is enough a) True c) it depends on curing temperature c) Mill Certificate b) False 305. The minimum test requirement for paint 316. The quality of paying concrete is usually measured by is______________. its _____________. a) 1 – sample for every 100 cans or fraction thereof a) compressive c) flexural b) 1 – sample for every 50 cans or fraction thereof b) tensile d) bond strength c) Mill Certificate 317. Generally speaking, batching of concrete aggregates 306. The minimum test requirement for water used in by volume is preferable than weight. concrete for a questionable source is______. a) True c) False a) P.E. Certificate b) they are the same b) 1 – Quality Test c) Inspection Report 318. If angular coarse aggregate is used in a concrete mix, it will require more________________ 307. Based on the maximum dry density obtained by a) water c) water and fine aggregates laboratory test, the degree of compaction required for b) fine aggregates d) neither a and b aggregate subbase should be at least _____. a) 95% c) 100% 319. The most favorable period for curing concrete b) 98% d) none of the above is______________. a) during the first few days or week 308. Per our present Specification for Highways and b) after 3 days Bridges including amendments, it is mandatory to open c) after one week PCCP to traffic not later than ___________. d) before 28 days 320. Lower water content ratio in concrete mixes no.___________. improves________________. a) 200 c) 16 a) strength c) water tightness b) 40 d) 4 b) durability d) all of the preceding 332. Which plasticity index would you prefer for the base 321. When concrete must be placed in a sloping surface, course of PCCP? placing should start at the__________. a) less than 6 c) 10 to 12 a) bottom c) can be top or bottom b) 6 to 9 d) more than 12 b) top 333. A soil which is classified A-7 by the highway research board method will have a subgrade rating of__________. a) excellent c) fair b) good d) poor 322. The maximum percent abrasion loss allowed for concrete coarse aggregate is__________. 334. The empirical number used in design a) 30% c) 45% is____________. b) 40% d) 50% a) plasticity index b) group index 323. The plasticity index of aggregate base course should c) both of the preceding be not greater than ___________. a) 6 c)10 335. Soil is fully saturated at optimum moisture content. b) 8 d) 12 a) true b) false 324. In casting of reinforced concrete pile, the concrete c) it depends on void ratio used is____________. a) A1 c) C1 336. Water content of soil is generally base b) D d) C2 on____________. a) total weight of soil c) weight of solids 325. The natural water content of highly organic soil b) total volume of soil d) unit weight test is__________. a) less than 20 c) between 50 and 100 337. Optimum water content of soil is determined b) between 20 and 50 d) more than 100% by______________. a) field density test c) compaction test 326. Which of the following dead load is equivalent for b) liquid limit test d) unit weight test loose sand, earth and gravel fill? a) 2,403 tons/cu. m. c) 1,603 tons/cu. m. 338. The particle size distribution of soil is determined b) 1,922 tons/cu. m. d) 2,150 tons/cu. m. by__________________. a) liquid limit granular 327. Rate of application for curing compound b) plastic limit test is_______________. c) sieve analysis test a) 0.30 li/sq. m. c) 0.15 li/sq. m. d) any of the preceding test b) 0.20 li/sq. m. d) 0.10 li/sq. m. 339. Which of the following are most suitable for 328. During coring of completed pavement, how many construction of highway embankments? cores /km/lane is required as per specification? a) granular c) plastic a) 4 c) 6 b) fine- grained d) clayey b) 5 d) 7 340. The particle size distribution of sandy gravel is 329. What is the correct proportion for concrete masonry determined by________. work? a) hydrometer test c) dilantacy test a) 1: 2 c) 1: 4 b) sieve test d) any of the preceding test b) 1: 3 d) 1 : 5 341. The best soil for a road subgrade would behave a 330. The opening of No. 4 sieve is bigger than the opening group index of ___________ of a ¼ sieve. a) less than 3 c) 11 to 15 a) true b) 5 to 10 d) 16 to 20 b) false c) they are the same 342. The highest moisture content in the plastic state of fine grained soil is the___________. 331. The standard compaction test on predominantly fine a) liquid limit grained soils is performed on soil fraction passing sieve b) plastic limit 343. Which of the following is characterizes unsuitable b) 2.0 mm. materials? d) 1.0 mm. a) soil with liquid limit exceeding 80 b) plasticity index exceeding 55 354. The higher the________, the lower the penetration. c) soil with natural water content exceeding 100% a) specific gravity d) all of the above c) durability b) viscosity 344. Shringkage factor test is_______________. d) solubility a) test to determine pay volume b) test to determine strength characteristic 355. The required thickness of the thermoplastic paint in c) test to determine volume change PCCP is__________. d) test to determine maximum density a) 3.2 to 4.8 mm. c) 3.3 to 3.8 mm. b) 3.0 to 4.5 mm. d) 3.2 to 4.0 mm 345. Soil is fully saturated if the water content 356. What percent of hydrated lime shall be added to the is______________. mixture during mixing operation of asphalt mix? a) at optimum amount c) more than 100&% a) 0.5 to 1.0 mass % c) 0.75 to 1.2 mass % b) 100% d) none of the preceding b) 1.0 to 1.5 mass % d) 0.2 to 0.7 mass % 346. The density to which a soil can be compacted is 357. related to ____________. As Materials Engineer, what would you recommend in a) compactive effort c) both a and b order to check the suitability and efficiency of the b) water content d) neither a or b equipment to used prior to subbase construction for item 310, Bituminous Concrete Surface Course? 347. Specification require 1 quality test every_______of a) make a trial section c) make trial mix asphalt mix. b) establish control strips d) none of the above a) 40 ton c) 50 tons b) 130 tons d) 150 tons 358. Quality of factor – produced reinforced concrete pipes may be best established through what? 348. All asphalt are_______, they became harder as a) compressive strength test temperature b) flexural strength test decreases and softer as their temperature increases. c) core test a) thermoplastic c) brittle d) crushing strength test b) hyrophobic d) none of the above 359. Result of Immersion – Compression test conducted on 349. The viscosity of the asphalt during mixing and lay a bituminous mix sample are as follow: Dry stability + down is ____________. 2,000 Kpa, Wet stability = 1,000 Kpa, What is the resulting a) viscosity at 135*C c) viscosity at 60*C Index of Retained Strength? b) viscosity at 125*C d) viscosity at 163*C a) 60% c) 50% b) 55% d) 70% 350. The trial section for compaction for each type of fill materials and type of equipment to be used in the work 360. In DPWH Contract Projects, Quality Control is the should have an area of__________. sole responsibility of___________. a) 500 sq. m. c) 600 sq. m. a) the DPWH project personnel b) 335 sq. m. d) 400 sq. m. b) the government’s Materials Engineer c) the Contractor 351. Control slip shall have an area of approximately____________. 361. As Materials Engineer, when is the right time to start a) 500 sq. m. c) 600 sq. m. sampling and testing of materials to be incorporated into b) 335 sq. m. d) 400 sq. m. the work? a) before final payment 352. Fine aggregate used in asphalt mix is the b) before start of work items one________________. c) before first partial payment a) passing the no. 8 sieve b) passing the no. 30 sieve 362. The Spot Test on asphalt is used to determine what? c) passing the no. 200 sieve a) cleanliness d) returned the no. 8 sieve b) overheating during manufacture c) safe working temperature 353. The corrugation produce by brooming d) viscosity of the mix is_____________. a) 1.5 mm. c) 2.5 mm. 363. Under what climate conditions do we use higher 372. How do you reduce the viscosity of Medium – Curing penetration grade asphalt cement? Cutback Asphalt? By mixing it with_______. a) hot climate c) cold climate a) gasoline c) kerosene b) rainy weather d) none of the above b) diesel d) emulsion 364. What is the basis for rejection or acceptance of any 373. What establish the exact percent of aggregates and construction materials? asphalt content in a bituminous mix_______. a) Certificate of Billing a) design mix c) job mix formula b) Materials Test Report b) job order d) extraction formula c) Statement of work accomplished d) none of the above 374. What greatly influence the serviceability of an asphalt pavement? a) quality of aggregates and climate 365. Initial rolling of bituminous mixes shall be performed b) penetration grade and quantity of asphalt with a______ roller. c) density and compaction of completed pavement a) vibrator c) sheepfoot b) pneumatic d) none of the above 375. In asphalt pavement construction, how is the surface level of the completed pavement check? 366. In a bituminous mix sample, what is the % of asphalt a) by T – core test by a) weight of aggregate and by b) weight of mix? Given b) by density test the following data: Weight of dry aggregates (after c) by the use of 3 meter straight edge extraction) = 950 grams: Weight of Mix = 1010. A.a) 6.32% 376. What primarily influence the grade of asphalt to be b)5.50% selected? c) 6.0% a) penetration c) climate d) none of the above b) class of aggregate d) temperature B. a) 5.50% b) 6.32% 377. Who will approve the Job Mix Formula? c) 6.0% a) DPWH Project/Materials Engineer d) 5.94% b) Contractor c) Contractor’s Materials Engineer 367. What grade of asphalt has a penetration grade of 0 – 30? 378. What control during the mixing and compaction of the a) emulsified asphalt c) blown asphalt bituminous pavement is of great significance in the b) asphalt cement d) none of the above resulting pavement? a) compaction c) grading of aggregates 368. Problems regarding quality of construction materials b) density d) temperature shall be reported directly by the Contractor’s Materials Engineer to the____________. 379. In asphalt pavement construction, there are three a) DPWH Materials Engineer phases of rolling; what kind of roller is required to be used b) Contractor for the final compaction and smoothing? c) Contractor’s Project Engineer a) pneumatic rolle d) none of the above b) sheepfoot roller c) tandem- smooth wheeled roller 369. If the RC pipes in the forgoing problem is not cast in the field, how many pipes will be required to be subjected 380. What is the maximum speed of the roller in to the Crushing Strength test? compaction of asphalt pavement? a) 75 pcs. a) 4 kph c) 8 kph b) 70 pcs. b) 5 kph d) 6 kph c) 100 pcs 381. What shall be checked after final rolling? 370. How many concrete cylinder samples are required for a) degree of compaction 3,500 pcs. of reinforced concrete pipes? b) optimum asphalt content a) 14 sets of 3 c) 75 sets of 3 c) quantity of aggregates b) 140 sets of 3 d) none of the above 382.When is the completed asphalt pavement opened to 371. What is the bitumen obtained from the distillation coal traffic? or wood? a) when the asphalt has cooled to atmospheric a) rock asphalt c) emulsion temperature b) tar d) none of the above b) when the asphalt has cooled to +/- 10*C of the spreading temperature c) when asphalt is still hot 383. The apparatus used in determining the consistency of 393. Traffic paint shall be applied to the pavement at the asphalt cement is ___________. rate of 0.33 li/sq. m. and shall dry sufficiently to be free it a) penetrometer from cracking from ___________. b) viscometer Ans. 150to 30 mins. c) thermometer 394. This is the only class of riprap that may consist of 384. How is the consistency of liquid asphalt determined? round natural stones. a) viscometer Ans.. Class A Riprap b) Tag open cup c) penetrometer 395. The surface of riprap shall not vary from the theoretical surface by more than_________ mm. at any point. Ans.. 100 mm. 385. The Optimum Asphalt Content obtained in Marshall 396. Fine aggregates of masonry shall all passes Stability Test is the average asphalt content of the the________ mm. sieve. Maximum Stability, Maximum Bulk Specific Gravity, Ans.. 2.36 mm (No. 8 sieve ) and__________. a) 4% Air Voids 397. Mortar that is not used within______ minutes after the b) 2 mm flow water has been added shall be discarded. c) 5% mineral content Ans. 90 minutes 386. What test determines the safe working temperature of 398. Maximum projection of rock faces beyond the pitch the asphalt? lines shall not be more than_____. a) Ductility test Ans.. 50 mm. b) Flash Point Test c) Stability Test 399. In hot or dry weather, the masonry shall be satisfactory protected from the sun and shall be kept wet for 387. __________are usually tested for extraction. a period at least______after completion. a) Asphalt Mixes Ans.. Three ( 3 ) days b) emulsions c) asphalt cement 400. For pavement markings, the composition of white paint shall be_______pigment and______% of vehicle 388. Steel bars for the concrete reinforcement are tested for Ans.. 42 – 45 % pigment; 53 – 55% vehicle their______properties. a) tensile and bending 401. The composition of yellow paint shall be_______ b) compressive pigment and______ vehicle. c) crushing Ans.. 23% pigment and 77% vehicle 389. What method is used in determining the strength of 402. The__________ material shall be of such quality that concrete pipes? it will not darken or become yellow when a thin section is a) third point loading method exposed to sunlight. b) center point loading method Ans.. Non volatile material c) three edge bearing method 403. ___________ consist of beads of good quality, 390. How many units shall be tested for strength, moisture optically clear, lead free glass with not less than 90% and absorption in a lot of 120,000 CHB reasonably spherical and free from flows. Ans.. 18 units Ans. Ballotini for reflective road paint 391. For 250 gallons of Reflectorized Traffic Paint, how 404. ______ is a reflector which shall be the short base type many samples are required to be submitted for Quality having a maximum base area of 180 mm x 140 mm. Testing? Ans. Flash surface reflective stud a) 3 samples b) 2 samples 405. The pads shall be highly resilient and durable rubber c) 4 samples reinforced with canvas and shall have a design life of at least____________. 392. The bituminous mix should have a mass % of air voids Ans. Five ( 5 ) years within the range of__________. a) 2 to 3% 406. The reflectors shall have the minimum specific b) 1 to 4% intensity value expressed as______ of illumination. c) 3 to 5% Ans.. Candle power per foot candle  penetrate, bond, and stabilize this existing surface and to 407. The reflector shall support a vertical load of_____ promote adhesion between it and the new super-impose when tested. construction. Ans. 10 KN Ans. Prime Coat 408. When raised profile type reflector are specified the 420. A uniform application of a mixture of emulsified approved_______epoxy adhesive shall be used. asphalt, fine aggregate, mineral filler, and water to an Ans. Two ( 2 ) parts existing pavement, single or multiple applications may be used. 409. Expansion joint filler having a nominal thickness of Ans. Slurry Seal less than________mm. shall not be subject to a requirement for water absorption. 421. ______ is an application of bituminous material Ans. 9.5 mm applied for an existing, relatively non-absorbent surface to provide a thorough bond between old and new surfacing. Ans. Tack Coat 410. Expansion joint filler having a nominal thickness of 422.____________ is a bituminous aggregate application to less than ________ mm. shall not be subject to a any type of road or pavement surface for the purpose of requirement for compaction. providing a wearing course, or surface seal or both. Ans.. 13 mm. Ans. Treatment and Seals 411. Strip of the