Значение и использование
4.1 This practice defines various types of bituminous paving construction for which cutback asphalt may be used. In addition, it delineates the types and grades recommended for each specific use.
4.2 This practice provides the basic concepts on which the use recommendations have been made. It also provides a rationale by which the user may judiciously select a material for a specific job application from among those generally recommended.
1.1 Thispractice covers the selection of cutback asphalts of the slow,medium, and rapid curing types for various paving and allied uses.Slow-curing cutback asphalts are also called road oils.
1.2 Thevalues stated in either SI units or English units are to beregarded separately as standard. The values stated in each systemmay not be exact equivalents; therefore, each system shall be usedindependently of the other. Combining values from the two systemsmay result in nonconformance with the standard.
1.3 Thetext of this standard references notes and footnotes which provideexplanatory material. These notes and footnotes (excluding those intables and figures) shall not be considered as requirements of thestandard.
1.4This standard does not purport to address all of the safetyconcerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety,health, and environmental practices and determine the applicabilityof regulatory limitations prior to use.
1.5This international standard was developed in accordance withinternationally recognized principles on standardizationestablished in the Decision on Principles for the Development ofInternational Standards, Guides and Recommendations issued by theWorld Trade Organization Technical Barriers to Trade (TBT)Committee.