Asphalts shall be made by refining of petroleum and shall be free from tar or tar products. The respective types and grades shall meet the specification requirements. Asphalts shall be sampled in accordance with AASHTO T 40. When asphalt material is furnished by a supplier who is not certified under provisions of MP 401.02.25, the supplier shall be required to have each batch or lot of material, to be furnished to the Division, sampled by a Division-approved inspection agency, in accordance with MP 700.00.01 and shall have the samples tested for compliance with the governing Specification in a Division-approved laboratory. The correct application temperature for the material shall be used as directed by the material manufacturer. Measurement of the volume of asphalt materials however, shall be based on the volume of the materials at 60F. Volumes measured at higher or lower temperatures shall be corrected to the volumes of the material at 60F using the coefficients of expansion given below: Temperature Conversion Factors Material Coefficient for F Asphalt Emulsion 0.00025 Performance Graded Binder 0.00035 Cut-back Emulsified Asphalt 0.0004 705.1-WINTER GRADE CUT-BACK ASPHALT: This material shall conform to Cut-back asphalts as per section 705.2, 705.3, or 705.4 705.2-LIQUID ASPHALT (RAPID CURING TYPE): Rapid curing liquid asphalt shall conform to the requirements of AASHTO M 81. 705.3-LIQUID ASPHALT (MEDIUM CURING TYPE): Medium curing liquid asphalt shall conform to the requirements of AASHTO M 82 and in addition shall meet the requirements of AASHTO T 182 705.4-ASPHALT EMULSION: Anionic emulsified asphalts shall conform to the requirements of AASHTO M 140. 705.5-PERFORMANCE GRADED BINDERS: Performance Graded (PG) Asphalt Binders shall conform to the requirements in Table 1 of AASHTO M-332, with the following deviations:
1.Manufacturers are not required to meet the requirements of AASHTO T-314 in Direct Tension.
2.For Binders grades with a Jnr 3.2 max requirement of 0.5 kPa –1 the manufacturer is not required to meet the 75% requirements for Jnr Diff.
3.The indication of elastic response for PG 64E – 22 binders shall be determined using the Appendix X1-Indications of Elastic Response in AASHTO M 332.
4.For Standard Testing Temperatures see Table 705A below. Table 705A – Performance Graded Asphalt Binders Binder Grade Designations Testing Temperature Non-recoverable creep compliance at 3.2kPa, Jnr (3.2), kPa -1, Max % Difference in Non-Recoverable Creep Compliance, Jnr(diff), %, Max PG 58S – 28 58°C 4.5 75% PG 64S – 22 64°C 4.5 75% PG 64H – 22 64°C 2.0 75% PG 64E – 22 64°C 0.5 - A certified producer or distribution terminal will be the last source to handle/manipulate a PG binder before being shipped to an asphalt concrete plant or project. The producer or terminal will provide the PG binder certification report with the shipment. 705.6: Blank 705.7-ASPHALT FOR DAMPPROOFING AND WATER-PROOFING: Materials shall conform to the requirements of ASTM D449. Unless otherwise specified, Type-II shall be used. 705.8-PRIMER FOR USE WITH ASPHALT IN DAMPPROOFING AND WATERPROOFING: Materials shall conform to the requirements of ASTM D41. 705.9 through 705.10: Blank
705.11 Cationic Emulsified Asphalt:
Cationic emulsified asphalt shall conform to the requirements of AASHTO M 208.
705.12 Polymer-Modified Cationic Emulsified Asphalt:
Polymer-modified cationic emulsified asphalt shall conform to the requirements of AASHTO M 316.
705.13 Nonstandard Asphalt Materials:
All asphalt materials that are not standard AASHTO or ASTM grades shall meet the recommended requirements specified by the Division. After Division approval, materials will be listed on the MCS&T web page under Division Approved Source/Product Listing for bituminous materials. SECTION 706-BLANK
Referenced in this section
Asphalt Materials in other states
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Source: Standard Specifications for Roads and Bridges, 2023 Edition. Pages 809–811 of 1,006. View official source ↗