AASHTO M 81-92 (2021) PDF Download

AASHTO M 81-92 (2021) is a standard that defines the requirements for a specific type of liquid petroleum product used for treating road surfaces. This product is produced by blending an asphaltic base with appropriate petroleum distillates. The resulting mixture is known as cutback asphalt.

The purpose of cutback asphalt is to provide a rapid-curing material for road treatments. It is commonly used for surface treatments such as prime coats and tack coats, which help to enhance adhesion between asphalt layers or to promote bonding between the existing pavement and a new overlay. The specification ensures that the cutback asphalt meets the necessary quality and performance requirements, while also considering safety and environmental considerations.

By establishing the quality standards and testing methods, AASHTO M 81-92 (2021) ensures consistency and reliability in the production and use of cutback asphalt. This allows road agencies and contractors to have confidence in the performance of these materials, leading to more durable and safe road surfaces.