Code of Practice RC 50001 of Bituminous Mix Designs July 2023-1.pdf

Code of Practice RC 500.01 Registration of Bituminous Mix July 2023 Designs...

Code of Practice RC 500.01 Registration of Bituminous Mix July 2023 Designs Version 15.0 1 Scope This Code of Practice describes the process to be undertaken when registering bituminous mix designs to comply with the following Department of Transport and Planning (DTP) Standard Sections for Roadworks and Bridgeworks: - Section 404 Stone Mastic Asphalt - Section 405 Regulation Gap Graded Asphalt - Section 407 Dense Graded Asphalt - Section 417 Open Graded Asphalt - Section 418 High Modulus Asphalt (EME2) - Section 421 High Binder Crumb Rubber Asphalt - Section 422 Light Traffic Crumb Rubber Asphalt - Section 427 Bituminous Slurry Surfacing. Any reference made to ‘VicRoads’ or ‘Department of Transport’ are taken to mean Department of Transport and Planning. All mixes shall be designed in accordance with the appropriate test methods listed in DTP Code of Practice RC 500.16 Selection of Test Methods for Testing of Materials and Work and any referenced Standard Sections and Test Methods, and Australian Standard test methods. The order of precedence of DTP documents for mix designs are: Standard Sections Codes of Practice Test Methods. Registration under this Code of Practice does not attest to the production, delivery, placement or compaction of the mix and does not guarantee the handling properties or performance of the mix. All mixes shall be produced in compliance with Section 407. The various types of bituminous mixes are listed in Table 1. 2 Bituminous Mix Description Stone Mastic Asphalt (SMA) A gap-graded wearing course mix with a high proportion of coarse aggregate, which interlocks to form a skeletal structure to resist permanent deformation and provide a textured surface. It has a high polymer modified binder (PMB) content which also combines with the fines and filler in the mix to form a mastic. Regulation Gap Graded Asphalt (RGGA) An asphalt course of varying thickness applied to a pavement surface to adjust its shape preparatory to overlaying with another asphalt course or a sprayed seal. Dense Graded Asphalt (DGA) A mixture of coarse aggregate, fine aggregate, filler and bitumen, produced and placed using a hot or warm mix process and compacted to a dense state as a pavement layer or wearing course. Code of Practice RC 500.01 - Registration of Bituminous Mix Designs Page 1 of 15 DGA Types L, N, H, HP, V and VP mixes are primarily used for wearing and regulation courses. Type S series mixes and EME2 (Enrobés à Module Elevé) are primarily used as structural mixes for intermediate and base courses. Warm Mix Asphalt (WMA) An asphalt which contains an additive, or uses a manufacturing process, that allows the asphalt mix to be produced and placed at temperatures at least 20°C lower than Hot Mix Asphalt. Open Graded Asphalt (OGA) A bituminous wearing course mix using aggregate containing only small amounts of fine material and providing a high percentage of air voids. Principally used on freeways for its noise and water spray reducing properties. High Binder Crumb Rubber Asphalt (HBCRA) A dense graded asphalt mix which contains crumb rubber and a high binder content to improve flexural and elastic recovery properties and to delay reflective cracking. Light Traffic Crumb Rubber Asphalt (LTCRA) A dense graded asphalt mix which has crumb rubber incorporated into the mix, for use on light trafficked roads. Microsurfacing A bituminous slurry surfacing that contains polymer modified emulsion binder, that is capable of being spread in layers of variable thickness for rut-filling and correction courses and for wearing course applications. Table 1 - Types of Bituminous Mixes Mix Description Designation Stone Mastic Asphalt SMAN A Size 7 or 10 mm asphalt wearing course with PMB for use in heavily trafficked pavements A Size 7 or 10 mm asphalt wearing course with a heavily modified PMB for use in heavily SMAH trafficked intersections and pavements Regulation Gap Graded Asphalt RGG A Size 7 mm or smaller asphalt regulating course Dense Graded Asphalt A light duty Size 7 or 10 mm asphalt wearing course with low air voids and higher binder L content for use in very lightly trafficked pavements A light to medium duty Size 7, 10 or 14 mm asphalt wearing course or regulating course for N use in light to moderately trafficked pavements A heavy duty Size 7, 10 or 14 mm asphalt wearing course or regulating course typically H used in mid-block applications on moderate to heavily trafficked pavements A heavy duty Size 10 or 14 mm asphalt wearing course for moderate to heavily trafficked V intersections A very heavy duty high performance Size 10 or 14 mm asphalt wearing course HP incorporating a PMB typically used for use in mid-block applications where a high resistance to deformation and flexural cracking is required A very heavy duty high performance Size 14 mm asphalt wearing course incorporating a VP PMB for very heavily trafficked intersections where a high resistance to deformation and flexural cracking is required A Size 20 mm structural asphalt for intermediate course in heavy duty pavements or base SI course in medium duty pavements Code of Practice RC 500.01 - Registration of Bituminous Mix Designs Page 2 of 15  A fatigue resistant Size 20 mm structural base course asphalt for heavy duty asphalt SF pavements with a total asphalt thickness (excluding Open Graded Asphalt) of at least 175 mm A heavy to very heavy duty high performance Size 20 mm structural asphalt intermediate SP course incorporating a PMB for high resistance to deformation and flexural cracking A very stiff Size 20 mm structural intermediate course asphalt used to increase pavement SS deformation resistance and increase mix stiffness for very large scale heavy duty asphalt pavements. A high modulus structural intermediate or base course asphalt with a high resistance to EME2 deformation Open Graded Asphalt A Size 10 mm non-structural asphalt wearing course with high air voids and PMB binder for OGA use in high speed environments such as freeways/highways Crumb Rubber Asphalt A specialised Size 10 mm or 14 mm asphalt wearing course or Size 20 mm structural base HBCRA course with a high binder content and crumb rubber incorporated into the mix for use in heavily trafficked pavements A Size 7 mm, 10 mm or 14 mm asphalt wearing course with crumb rubber incorporated into LTCRA the mix for use in light trafficked pavements Microsurfacing A Size 4,5,7 or 10 mm mix for use as a regulating course or wearing course 3 Mix Design 3.1 Stone Mastic Asphalt Mix designs shall comply with the requirements of Section 404. 3.2 Regulation Gap Graded Asphalt Mix designs shall comply with the requirements of Section 405. 3.3 Dense Graded Asphalt For any given suite of dense graded mixes for any asphalt plant, excluding EME2, one of the following mix design methods shall be used: The Austroads Mix Design Method as described in DTP Test Methods RC 201.12 Design of Asphalt Mixes (Gyratory Compaction Method) and RC 201.13 Performance Properties of Asphalt Mixes; or The Marshall Mix Design Method as described in DTP Test Method RC 201.01 Design of Asphalt Mixes (Marshall Method). DGA mix designs shall comply with the requirements of Section 407. EME2 mix designs shall comply with the requirements of Section 418. 3.4 Open Graded Asphalt Mix designs shall comply with the requirements of Section 417. 3.5 High Binder Crumb Rubber Asphalt Mix designs shall comply with the requirements of Section 421. Code of Practice RC 500.01 - Registration of Bituminous Mix Designs Page 3 of 15 3.6 Light Traffic Crumb Rubber Asphalt Mix designs shall comply with the requirements of Section 422. 3.7 Microsurfacing Mix designs shall comply with the requirements of Section 427. 4 Mix Registration 4.1 Registration Procedure Applications to register a bituminous mix shall be submitted by the supplier to ARRB ([email protected]) at least two months prior to the proposed date for the commencement of supply of the mix and shall be accompanied by the information listed in Clause 5. Mixes shall be current at the time of supply of the mix to a project. The supplier shall nominate a mix identification number for each mix and this number shall be used to identify the mix for all future communications and for job records. The mix identification number for mixes designed by the Austroads method shall include the suffix “(A)” and mixes designed by the Marshall method shall include the suffix “(M)”. In addition to the above, the mix identification number for Warm Mix Asphalt (WMA) shall include the suffix “(W)”. The supplier will be advised in writing of the result of the application to register a mix. All mix designs registered with DTP are issued a registration status, being either: GENERAL Complies with the requirements of this Code of Practice, or CONDITIONAL Mixes which do not comply with one or more aspects of the requirements of this Code of Practice but which are considered appropriate for use subject to conditions attached to the registration. The registration of a mix design will remain current for a period of three (3) years subject to there being no changes to the source or grading of aggregate components, source of filler components, or the grade/class of binder. Registered mixes that have passed their registration date are deemed to have expired, with their details being retained for record purposes. 4.2 Registration Review If a registered mix has unsatisfactory handling or field performance, the supplier may request DTP to de- register the mix. Alternatively, DTP may de-register the mix pending a review and immediately advise the supplier of the action taken. In addition, failure to demonstrate that mix production is consistently in accordance with the specification requirements may result in DTP applying conditions to the mix registration or de-registering the mix. Code of Practice RC 500.01 - Registration of Bituminous Mix Designs Page 4 of 15 5 Information Required for Mix Registration 5.1 Dense Graded Asphalt (a) Information Required The following information shall be submitted for each new mix design: (i) Grading test results for each component (ii) Proportion of each component in the mix (iii) Grading of the mix (iv) Graphs of mix properties vs Bitumen Content for: Bulk Density, Max Density, Voids in Mineral Aggregate, Air Voids, and Binder Film Index (v) Unsound and marginal rock content of the coarse aggregate (vi) Flakiness Index of each separate coarse aggregate fraction of 10 mm and above (vii) Degradation Factor and Plasticity Index for the crusher fines and manufactured sand components (viii) Sand Equivalent Value of washed sand and Plasticity Index of unwashed sand, as applicable (ix) Class of binder and certificate of compliance (x) Source of added filler and certificate of compliance for added filler (xi) The Dry Compacted Voids of total combined filler (xii) Test information as shown in Table 2. For EME2 refer to Section 418 (xiii) Recycled Asphalt Pavement (RAP) – refer to Clause 5.1(d) (xiv) Name, source, nominated proportions and material properties of any additives. All test results shall be current at the time of submission of the mix design and shall not be greater than 12 months old. All components of the asphalt mix shall comply with Section 407 or 418 as appropriate. Table 2 - Test Information to be Submitted for each Mix for Registration Bituminous Mix Size and Types Volumetric Tests Austroads Mixes Marshall Mixes Air Voids at Design Binder Content All mixes All mixes Clause 6.1(b)(i) Clause 6.1(b)(ii) Voids in the Mineral Aggregate All mixes All mixes Clause 6.1(b)(i) Clause 6.1(b)(ii) Bulk Density All mixes All mixes Maximum Density (voids free All mixes All mixes density) Minimum Binder Content All mixes All mixes Clause 6.1(a)(iii) Binder Film Index All mixes All mixes Clause 6.1(a)(iv) Performance Tests Austroads Mixes Marshall Mixes Indirect Tensile Modulus All mixes except Type L and N All mixes except Type L and N Clause 6.1(c)(i) and size 7 mm mixes and size 7 mm mixes Moisture Sensitivity All mixes except size 7 mm All mixes except size 7 mm Clause 6.1(c)(ii) mixes, Type SF mixes and Type mixes, Type SF mixes and Type L mixes L mixes Code of Practice RC 500.01 - Registration of Bituminous Mix Designs Page 5 of 15  Wheel Tracking Depth All mixes except size 7 mm All mixes except size 7 mm Clause 6.1(c)(iii) mixes, Type L, N (incorporating mixes, Type L, N (incorporating C320 binder or RAP greater C320 binder or RAP greater than 10%) and SF mixes than 10%) and SF mixes Resistance to Fatigue Not applicable at this time Not applicable at this time Clause 6.1(c)(iv) pending further investigation pending further investigation (b) Binder used in Production For asphalt types with no RAP or those containing RAP in accordance with RAP Level 1 (refer Table 4), the class of binder for each asphalt type shall be as shown in Table 3. Table 3 - Class of Binder Asphalt Type Binder Class L C170 N C170 (1) or C320 (2) H, V, SI and SF C320 HP, VP and SP A10E SS C600 15/25 penetration grade EME2 10/20 penetration grade Notes for Table 3: 1. For mixes containing C170, up to 25% RAP may be used. 2. For mixes containing C320, up to 10% RAP may be used. (c) Additional Information Required for Mixes Using WMA Technology or Other Additives Only WMA technologies or other additives previously approved by DTP shall be permitted. The following information is required for mixes using WMA technology or that contain other additives: (i) The WMA technology or additive describing the process of manufacture of the asphalt (ii) Evidence that the WMA technology or additive has been approved by DTP (iii) Name, source, nominated proportions and material properties of the WMA technology or additive (iv) Where foaming is used as a WMA technology, the target rate for water addition and the acceptable variation for production. Where the Supplier meets the requirements of Clause 5.1(c)(i) to (iv) inclusive and Clause 6.1, Warm Mix Dense Graded Asphalt mixes containing unmodified binder or Dense Graded Asphalt mixes containing approved additives will be registered as ‘GENERAL’. The same WMA technology or additive can also be extended to other asphalt mixes except for mixes incorporating PMB, unless previously approved. Where the Supplier cannot meet the requirement in Clause 5.1(c)(ii), DTP may permit the use of WMA technology or other additives including their use in mixes containing PMB subject to the following: (v) Providing a detailed description of the WMA technology or additive that includes a full identification of the WMA technology or additive including type, dosage percentage and tolerances, method of inclusion into the asphalt mix, safety data sheet, quality control testing etc; and (vi) Undertaking testing or validation of the mix(es) as determined by DTP. Subject to meeting the requirements of Clause 5.1(c)(v) and (vi) and Clauses 6.1 and 6.2, DTP may register the mix as ‘GENERAL’ or ‘CONDITIONAL’. The WMA technology or additive may also be extended to other asphalt mixes as deemed appropriate by DTP. Code of Practice RC 500.01 - Registration of Bituminous Mix Designs Page 6 of 15 (d) Additional Information Required for Mixes Containing RAP The following information is required for all asphalt mixes incorporating either Level 1 or Level 2 RAP (refer Table 4): RAP nominal size and percentage of RAP used; Sieve analysis after extraction of binder; Binder content of RAP; and RAP Management Plan and Inspection and Test Plan that meets the requirements of Section 407 Clause 407.13. In addition, for RAP Level 2 mixes, the following information is required: Virgin binder, RAP binder and binder blend viscosities. For RAP Level 2 mixes the blend of virgin and RAP binder shall be designed to have a viscosity at 60 °C that falls within the viscosity range in Section 407, Table 407.132 for the binder specified in the nominated mix type. The components of the binder blend shall be determined according to AGPT/T193 Design of Bituminous Binder Blends to a Specified Viscosity Value. To achieve the targeted binder blend viscosity in the asphalt mix, a virgin binder class one grade lower than that specified in Table 3 may be used. The viscosity of the virgin binder class used in the binder blend calculation may be determined using either AGPT/T192 Characterisation of the Viscosity of Reclaimed Asphalt Pavement (RAP) Binder Using the Dynamic Shear Rheometer (DSR) or AS 2341.2 Determination of Dynamic Viscosity by Vacuum Capillary Viscometer. RAP binder characterisation and binder blend viscosity adjustments must be designed in accordance with Section 407 Clause 407.13(e). Table 4 - Permitted RAP Content (% by mass) Asphalt RAP RAP Type Level 1 Level 2 L Up to 25 - N Up to 10 (1) - Up to 25 (2) H Up to 15 16 to 20 SI Up to 15 16 to 30 SS Up to 15 16 to 30 V Up to 15 - SF Up to 15 16 to 40 Notes for Table 4: 1. For Type N mixes using C320 binder. 2. For Type N mixes using C170 binder. (e) Use of Recycled Plastic DTP may permit the use of recycled plastic in DGA (excluding mixes containing PMB) subject to additional testing, trials or validation of the trial mix performance being undertaken as required. Where DTP considers the mix as suitable for use the mix will be registered as ‘GENERAL’ or ‘CONDITIONAL’ as assessed by DTP. Recycled plastic must be sourced from waste plastic generated in Australia and processed by an accredited supplier holding a license or exemption for the recovery of resources from waste issued by the relevant state authority. Code of Practice RC 500.01 - Registration of Bituminous Mix Designs Page 7 of 15 5.2 Information Required for Other Bituminous Mix Registrations Stone Mastic Asphalt Refer to Section 404. In addition, for any mix containing aggregates of coarse or medium grained acid igneous rocks (e.g. granite, adamellite, granodiorite, quartz porphyry) shall contain not less than 1% hydrated lime filler. Regulation Gap Graded Asphalt Refer to Section 405 Open Graded Asphalt Refer to Section 417 High Modulus Asphalt (EME2) Refer to Section 418 High Binder Crumb Rubber Asphalt Refer to Section 421 Light Traffic Crumb Rubber Asphalt Refer to Section 422 Microsurfacing Refer to Section 427 6 Test Properties Required for Bituminous Mixes 6.1 Dense Graded Asphalt (a) Material Test Properties (i) Grading of Aggregates The proportions of aggregate and binder in the mix and the grading of aggregates including any added filler after mixing but before compaction, shall lie within the limits specified in Table 5 for each size of asphalt unless otherwise approved by DTP. Code of Practice RC 500.01 - Registration of Bituminous Mix Designs Page 8 of 15  Table 5 - Grading Limits for Aggregates (including any filler) Percentage Passing (by mass) Sieve Size Type N, V, VP, H Series and S Series Type L AS (mm) Size 7 Mix Size 10 Mix Size 14 Mix Size 20 Mix Size 7 Mix Size 10 Mix 37.5 26.5 100 19.0 100 90 – 100 13.2 100 85 - 100 75 - 88 100 9.5 100 90 – 100 70 - 84 61 - 75 100 90 – 100 6.70 80 - 100 70 – 86 59 - 73 49 - 64 80 – 100 70 – 90 4.75 70 - 88 58 – 73 48 - 65 41 - 55 70 – 90 58 – 76 2.36 46 - 65 38 – 55 32 - 48 27 - 41 45 – 65 40 – 58 1.18 31 - 51 25 – 44 22 - 37 18 - 33 34 – 55 27 – 48 0.600 20 – 40 16 – 34 14 - 28 12 - 25 22 – 45 17 – 38 0.300 13 – 29 10 – 24 10 - 22 8 - 19 14 – 33 11 – 26 0.150 8 - 17 6 – 16 6 - 14 5 - 13 8 – 18 7 – 18 0.075 5-8 4–7 4-7 3-6 5–8 4–7 (ii) RAP - General Requirements RAP must comply with the requirements of Section 407. The incorporation of RAP in the design of asphalt mix VP, HP, SP, HBCRA and EME2 is not permitted. (iii) Minimum Design Binder Content The binder content shall comply with the requirements of Table 6. Table 6 - Minimum Binder Content for Mix Designs (% by mass) Size 7 mm Size 10 mm Size 14 mm Size 20 mm Binder 5.0 4.5 4.5 4.0 (iv) Binder Film Index The binder film index shall comply with the requirements of Table 7. Table 7 - Binder Film Index Minimum Binder Film Asphalt Type Index (micron) N, H, VP, SI, SS 8.0 V 7.5 L, HP & SP 8.5 SF 9.5 Code of Practice RC 500.01 - Registration of Bituminous Mix Designs Page 9 of 15 (v) Added Filler Wearing Course Wearing course asphalt shall contain a minimum of 1% added filler. Added filler shall comply with the requirements of Section 407. It may consist of hydrated lime, cement kiln dust, ground limestone, ground granulated blast furnace slag, Portland Cement or fly ash produced from the combustion of black coal but excludes crusher dust and plant recycled fines. Acid Igneous Rocks Any asphalt containing aggregates of coarse or medium grained acid igneous rocks (e.g. granite, adamellite, granodiorite, quartz porphyry) shall contain not less than 1% hydrated lime filler. (b) Volumetric Test Properties (i) Austroads Mix Design Method The laboratory compaction level and design air voids for all mixes shall comply with those specified in Table 8, using the same binder type used in production as the base binder. Table 8 - Compaction Cycles and Air Voids for the Mixes Designed by the Austroads Method Asphalt Type Gyratory Cycles to Design Air Voids (1) Minimum Air Voids Achieve Design Aim for (%) at 250 Gyratory Cycles (2) Air Voids (%) (No.) L 50 4.0 Not Applicable N 80 4.0 To be reported H 120 4.0 To be reported V 120 5.0 To be reported HP 120 3.0 To be reported VP 120 4.0 To be reported SI, SS 120 4.0 To be reported SP 120 3.0 To be reported SF 80 2.0 Not Applicable Notes for Table 8: 1. The design air voids values may be adjusted to account for rounding of the binder content to the nearest 0.1%. 2. Also applies to mix types designed by the Marshall Method The minimum Voids in the Mineral Aggregate (VMA) shall not be less than the limits specified in Table 9 and the Binder Film Index shall not be less than the limits specified in Table 7. The binder content for Type HP shall be derived from the air voids versus binder content plot for the three trial binder contents used to design the Type H mix at 120 gyratory compaction cycles. Type SS shall be produced by direct substitution of the same mass of C600 binder for the C320 binder in the Type SI mix. (ii) Marshall Mix Design Method The test properties for Types L, N, V, VP, H, HP and S Series mixes shall comply with Tables 7 and 9. Code of Practice RC 500.01 - Registration of Bituminous Mix Designs Page 10 of 15 For Type H and SI mixes, the same binder type used in production shall be used in the base mixes for compliance with Table 9. The binder content of all other mixes may be derived from these mixes if they are the same in every respect other than binder class and content. All derived mixes must pass all other relevant volumetric test requirements for the mix using the production binder. Type SF shall be derived from a Type SI asphalt mix with a design binder content of 1% by mass of total mix higher than the Type SI mix. Volumetric properties for the Type SF mix shall be derived for the specified increase in binder content. Types HP and SP shall have a design binder content of 0.3% by mass of total mix higher than the Type H and Type SI mixes, respectively. Volumetric properties for Types HP and SP shall be derived from the complying volumetrics Type H and SI mixes respectively, for the specified increase in binder content. The binder film index of Type HP and SP mixes shall comply with Table 7. Type SS shall be produced by direct substitution of the same mass C600 binder for C320 binder in Type SI. Table 9 - Air Voids and Voids in Mineral Aggregate for Mix Types Designed by the Marshall Method Mix Air Voids Range (%) Minimum Voids in Mineral Aggregate (%) (1) Size L N & V VP SI SS L N H V VP SI SS (mm) H 7 3.8 – 4.9 – - - - - 15 15 16 - - - - 4.2 5.3 10 3.8 – 4.9 – 5.9 – - - - 15 15 16 16 - - - 4.2 5.3 6.3 14 - 4.9 – 5.9 – 4.9 – - - - 15 15 15 15 - - 5.3 6.3 5.3 20 - - - - 4.9 – 4.9 – - - - - - 14 14 5.3 5.3 Notes for Table 9: 1. Also applies to mix types designed by the Austroads Mix Design Method (c) Performance Test Properties (i) Indirect Tensile Modulus Test Properties The mean indirect tensile modulus of test specimens for each asphalt type listed in Table 10 shall be within the corresponding specified range. Code of Practice RC 500.01 - Registration of Bituminous Mix Designs Page 11 of 15  Table 10 - Mean Indirect Tensile Modulus Limits (1) (Gyratory Compaction) Asphalt Nominal Mean Indirect Tensile Modulus at 25°C Type Size (MPa) (mm) Minimum Maximum H 10 2500 5500 H 14 3000 6000 V 10 & 14 2500 5500 VP 14 1000 - (2) HP 10 & 14 1000 2500 SP 20 1000 2500 SI 20 3500 7000 SS 20 3500 7000 SF 20 3000 7000 Notes for Table 10: 1. Modulus test limits apply to gyratory compacted specimens compacted to 5% air voids within a tolerance of ± 0.5% air voids. 2. Value to be added in future revision. (ii) Moisture Sensitivity The Wet Tensile Strength and the Tensile Strength Ratio shall comply with the requirements of Table 11. Table 11 - Wet Tensile Strength and Tensile Strength Ratio (1) Asphalt Size &Type Minimum Wet Tensile Strength Minimum Wet to Dry Tensile (kPa) Strength Ratio % 10N, 10H, 10V, 14N, 14H, 14V 850 80 20SI, 20SS 650 80 10HP,14HP, 14VP, 20SP To be reported 80 Note on Table 11: 1. Test specimens shall be prepared using gyratory compaction to 8% air voids ± 1% air voids. Code of Practice RC 500.01 - Registration of Bituminous Mix Designs Page 12 of 15 (iii) Resistance to Deformation The maximum Tracking Depth tested under the AGPT/T231 Deformation Resistance of Asphalt Mixtures By The Wheel Tracking Test shall not exceed the values for asphalt mixes specified in Table 12. Table 12 - Wheel Tracking Depth(1) Asphalt Size and Type Maximum Tracking Depth at 60°C (mm) 14V, 14HP, 14VP, 20SP 4.0 10HP, 20SI, 20SS 5.0 10V, 14N, 14H 7.0 10H & 10N 8.0 Notes for Table 12: 1. Wheel track test specimens shall be compacted to 5% air voids ± 1% air voids. (iv) Resistance to Fatigue under Flexural Bending Fatigue testing requirements will be included in a future revision based on the outcomes of further investigations. 6.2 Test Properties required for other Bituminous Mixes Mix designs for other bituminous mixes shall comply with the following as appropriate: - Stone Mastic Asphalt Refer to Section 404 - Regulation Gap Graded Asphalt Refer to Section 405 - Open Graded Asphalt Refer to Section 417 - High Modulus Asphalt (EME2) Refer to Section 418 - High Binder Crumb Rubber Asphalt Refer to Section 421 - Light Traffic Crumb Rubber Asphalt Refer to Section 422 - Microsurfacing Refer to Section 427 Code of Practice RC 500.01 - Registration of Bituminous Mix Designs Page 13 of 15 Document Information Criteria Details Document Title Code of Practice 500.01 Registration of Bituminous Mix Designs Authorised by Senior Manager - Roads Engineering Release Date July 2023 Replaces December 2021 v14.0 Contact [email protected] Document History Version Date Description 9.0 April 2016 Various clauses. Incorporation of EME2 references 10.0 December 2018 Various clauses: Format and structural changes. Registration of other bituminous mixes included (UTA and Lean Mix Asphalt removed) Added 14VP and Size 7 mm SMA Table 1: Expanded definitions to bituminous mixes. VP and Size 7 mm SMA added. EME2 reclassified as DGA. Table 2: Removed 10 gyratory cycles, stability and flow. Revised testing requirements for various mixes. Table 3: Multigrade M500 replaces M1000. Added 15/25 penetration grade for EME2. Table 4: Particle loss required for Type SI. Particle loss removed for Type SF. Table 5: Removed aggregate proportion. Removed upper limit of bitumen content. Volumetric testing of the base mix will use production binder. VMA tolerance removed. Table 8: Removed 10 gyratory cycles. Added Types V & VP. Table 9: Removal of stability and flow. VMA reduced by 1% to account for the removal of the tolerance in 6.1 (b). Table 11: Moisture sensitivity testing extended to additional mixes Table 12: Revised wheel tracking limits for mixes. Removal of fatigue testing requirements pending further investigation. Table of acceptable warm mix technologies removed. 11.0 November 2019 Inclusion of reference to Standard Section 422 – Light Traffic Crumb Rubber Asphalt Various editorial changes, including table numbers and associated notes and order of precedence documents Table 4: Removed fatigue testing requirement for conditional RAP Type N & H mixes Table 12: Maximum tracking depth values revised to one decimal place. 12.0 April 2021 Update to reflect change to RAP requirements for asphalt mixes, as specified in Section 407 (April 2021). Removal of multigrade binder, update to various definitions 13.0 July 2021 Update to Level 1 RAP content for Type N asphalt. Minor editorial changes and updates to Type H, V and VP asphalt definitions 14.0 December 2021 Table 4 - Update to RAP content for Type V 15.0 July 2023 Editorial changes throughout. Clause 2: Revised mix descriptions to better align with those provided in the Austroads Glossary of Terms. Table 1: Removal of Size 14 Type SI Table 4: Allowing up to 15% RAP (Level 1) in Type V asphalt Modified Clause 5.1(c): Inclusion of text relating to the assessment of new WMA technology or additive. New Clause 5.1(e): Provision for use of recycled plastic Code of Practice RC 500.01 - Registration of Bituminous Mix Designs Page 14 of 15 Interpretation Copyright Department of Transport and Planning 2023 In this document, except where the context otherwise requires— Except for any logos, emblems, trademarks, artwork and The word “must” is to be understood as denoting a photography this document is made available under the terms requirement which is mandatory. of the Creative Commons Attribution 3.0 Australia license. The word “should” is to be understood as denoting a The information in this document is protected and no part of this requirement which is not mandatory but recommended. document is to be modified without the prior consent of the The word “includes” in any form is not a word of limitation. Victorian Department of Transport and Planning. Mentioning anything after "includes" or similar expressions (including "for example") does not limit what else may be included. Disclaimer A reference to a section, clause, schedule or appendix is The Victorian Department of Transport and Planning accept no a reference to a clause of or schedule or appendix of this liability for any loss or damage to any person, howsoever document. caused, for information contained in this publication that was copied directly into a specification, contract or standard without Nomenclature further analysis, decomposition and engagement with DTP. Where any of the following symbols are used within this document, the textual description provided to the right is its intended meaning: ⓘ This symbol intends the accompanying text to be read as INFORMATION. Common information accompanying this symbol includes RATIONALE and GUIDANCE for the associated requirement. Code of Practice RC 500.01 - Registration of Bituminous Mix Designs Page 15 of 15