1.1This practice covers test methods and equations for calculating percent change between two laboratory-blended asphalt binder samples, typically a neat asphalt binder and an asphalt binder blended with an additive material. The percent change can be used to identify a dosage level of additive that yields an agency-accepted asphalt binder G*/sin δ property range. This calculation is based on G*/sin δ values using laboratory-blended unaged asphalt binder. The intent of this standard practice is to conduct a relatively quick evaluation of the percent change between pre-blended and post-blended asphalt binder samples.
1.2Units-The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard.
1.3The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.
1.4This 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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