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.

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 This practice 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 The values stated in either SI units or English units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.

1.3 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.