1.1 This test method is for quick determination of performance grade (PG) and elastic recovery (ER) of asphalt materials using a dynamic shear rheometer (DSR). The determined continuous high- and low- temperature PG are similar to those determined by Practice D7643 and the determined ER is similar to the percent recovery from Test Method D6084. This test method may be used to determine the effect of RAP, RAS, GTR, REOB, and/or other additives on asphalt mixtures as well as QA/QC. 1.2 This test method is appropriate for fine particulate asphalt materials such as recovered composite mastic (fine portion of the mixture containing filler and any other additives), unmodified and modified extracted asphalt binder, or recovered emulsion. 1.3 Units--The values stated in SI units are to be regarded as the standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Keywordsasphalt; mastic; continuous performance grade; PG; RAP; RAS; recycled materials; fatigue; high-temperature PG; low-temperature PG; elastic recovery; extracted binder; composite mastic
This standard is needed for determining the effect of RAP/RAS on mechanical performance of asphalt mixtures. The results of the test are going to be used for QA/QC. The users are asphalt laboratory technicians and engineers.
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top
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