AASHTO PP 86-20 (2021) PDF Download

AASHTO PP 86-20 (2021) is a standard practice that provides guidelines for determining the emulsified asphalt content in cold recycled mixture designs. The standard is particularly applicable to cold recycling methods such as cold in-place recycling (CIR) and cold central plant recycling (CCPR). The aim of the standard is to establish the appropriate amount of emulsified asphalt and other additives required to achieve the desired performance properties of the recycled asphalt mixture.

The standard emphasizes the importance of evaluating the strength and other performance characteristics of the recycled mixture to ensure its suitability for use in pavement applications. This includes assessing factors such as rutting resistance, fatigue resistance, and moisture susceptibility. By determining the optimal emulsified asphalt content and composition, the standard helps in improving the durability and long-term performance of the cold recycled asphalt mixtures.