AASHTO R 95-19 PDF Download

AASHTO R 95-19 is a standard practice that specifically focuses on the accelerated aging of hot-poured asphalt crack sealant using a vacuum oven. It is applicable to the crack sealant material that is commonly used in the construction and maintenance of roadways. The purpose of this standard is to ensure that the crack sealant can withstand the challenging conditions and environmental factors that it will be exposed to during its service life.

The accelerated aging process involves subjecting the crack sealant material to elevated temperatures and a vacuum environment. This process is carried out according to the specifications defined in MP 25 and PP 85. The elevated temperatures simulate the harsh climatic conditions that the sealant may experience over time, while the vacuum helps to accelerate the aging process.

By conducting this accelerated aging test, the standard aims to assess the performance and durability of the crack sealant under accelerated conditions. The results obtained from this test can then be used to evaluate the suitability and effectiveness of the crack sealant material for use in real-world applications. Ultimately, the standard's goal is to ensure that the hot-poured asphalt crack sealant meets the necessary requirements for long-term performance and durability on roadways.