Standard Specification for
Cutback Asphalt (Medium-Curing Type)
AASHTO Designation: M 82-75 (2004)
SCOPE
This specification covers liquid petroleum products, produced by fluxing an asphaltic base with suitable petroleum distillates, to be used in the treatment of road surfaces.
e values stated in SI units are to be regarded as the standard.
Th
GENERAL REQUIREMENTS
The cutback asphalt shall show no separation or curdling prior to use and shall not foam when heated to the application temperature.
PROPERTIES
Cutback asphalt of the grade designated shall conform to the requirements shown in Table 1.
METHODS OF SAMPLING AND TESTING
Sampling and testing cutback asphalt (medium-curing type) shall be in accordance with the following standard methods of the AASHTO standards:
- T 40, Sampling Bituminous Materials
- T 44, Solubility of Bituminous Materials
- T 49, Penetration of Bituminous Materials
- T 51, Ductility of Bituminous Materials
- T 55, Water in Petroleum Products and Bituminous Materials by Distillation
- T 72, Saybolt Viscosity
- T 78, Distillation of Cutback Asphaltic (Bituminous) Products
- T 79, Flash Point with Tag Open-Cup Apparatus for Use with Material Having a Flash Less
Than 93.3°C (200°F)
- T 102, Spot Test of Asphaltic Materials
- T 201, Kinematic Viscosity of Asphalts (Bitumens)
- T 202, Viscosity of Asphalts by Vacuum Capillary Viscometer
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