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What is the primary role of aggregates in concrete?
What is the primary role of aggregates in concrete?
- To provide dimensional stability of concrete
- To increase the strength of concrete in resisting abrasion loads and weathering effects (correct)
- To act as a cheap filling material
- To react with the cement
Which type of aggregate classification includes natural and artificial sources?
Which type of aggregate classification includes natural and artificial sources?
- Source (correct)
- Surface Texture
- Size
- Shape
What does the term 'bulking of fine aggregate' refer to?
What does the term 'bulking of fine aggregate' refer to?
- Decrease in the volume of fine aggregate due to moisture content
- Increase in the volume of fine aggregate due to moisture content (correct)
- Decrease in the weight of fine aggregate due to moisture content
- Increase in the weight of fine aggregate due to moisture content
What does bulk density mainly depend on in the context of aggregate properties?
What does bulk density mainly depend on in the context of aggregate properties?
What is the bulk density range for gravel aggregate?
What is the bulk density range for gravel aggregate?
Which type of aggregate has a surface texture that is described as 'honeycombed'?
Which type of aggregate has a surface texture that is described as 'honeycombed'?
What property does the term 'soundness' relate to in aggregate properties?
What property does the term 'soundness' relate to in aggregate properties?
What is the function of aggregates in concrete when combined with cement?
What is the function of aggregates in concrete when combined with cement?
What does the term 'lean mix' typically refer to in the context of concrete proportions?
What does the term 'lean mix' typically refer to in the context of concrete proportions?
Which type of aggregate size includes gravel and crushed stone?
Which type of aggregate size includes gravel and crushed stone?
What is the formula for calculating bulk density?
What is the formula for calculating bulk density?
What is the purpose of tamping the aggregate layers 25 times in the bucket?
What is the purpose of tamping the aggregate layers 25 times in the bucket?
What is the apparent specific gravity used for in concrete mix design?
What is the apparent specific gravity used for in concrete mix design?
How can the voids between aggregate particles be determined?
How can the voids between aggregate particles be determined?
What is the purpose of determining the absorption capacity of an aggregate?
What is the purpose of determining the absorption capacity of an aggregate?
What is affected by the presence of moisture in fine aggregate?
What is affected by the presence of moisture in fine aggregate?
What does bulking of fine aggregate result in?
What does bulking of fine aggregate result in?
What does the term 'soundness of aggregate' refer to?
What does the term 'soundness of aggregate' refer to?
What standard tests are used to determine the soundness of aggregate?
What standard tests are used to determine the soundness of aggregate?
What is the maximum limit of salt contamination (% by weight) for fine aggregate after the soundness test?
What is the maximum limit of salt contamination (% by weight) for fine aggregate after the soundness test?
What is the chloride ion content limit (expressed as a percentage by mass) for combined aggregate used in prestressed concrete?
What is the chloride ion content limit (expressed as a percentage by mass) for combined aggregate used in prestressed concrete?
What is the purpose of limiting chloride and sulfate salts in aggregate according to different codes?
What is the purpose of limiting chloride and sulfate salts in aggregate according to different codes?
Which physical conditions can cause changes in volume and impact the soundness of aggregate?
Which physical conditions can cause changes in volume and impact the soundness of aggregate?
What is the maximum limit on total sulfate content in concrete as per BS 882?
What is the maximum limit on total sulfate content in concrete as per BS 882?
What destructive reaction may result from the alkali aggregate reaction?
What destructive reaction may result from the alkali aggregate reaction?
How can the reactivity of aggregate be detected?
How can the reactivity of aggregate be detected?
In the context of grading of aggregate, what does Sieve No.4 (4.75 mm) represent?
In the context of grading of aggregate, what does Sieve No.4 (4.75 mm) represent?
What is the purpose of using supplementary cementing materials (SCM) in limiting alkali aggregate reaction?
What is the purpose of using supplementary cementing materials (SCM) in limiting alkali aggregate reaction?
What is the function of a sieve shaker in grading of coarse aggregates?
What is the function of a sieve shaker in grading of coarse aggregates?
Why should aggregate samples be oven dried before testing during sieve analysis?
Why should aggregate samples be oven dried before testing during sieve analysis?
What does the term 'grading curves' represent in the context of sieve analysis?
What does the term 'grading curves' represent in the context of sieve analysis?
What is the purpose of arranging sieves in descending order during sieve analysis?
What is the purpose of arranging sieves in descending order during sieve analysis?
What is the primary function of Alkali-Silica Gel or Alkali-Carbonate-Gel in concrete?
What is the primary function of Alkali-Silica Gel or Alkali-Carbonate-Gel in concrete?
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