AASHTO PP 87-20 (2021) PDF Download

AASHTO PP 87-20 (2021) is a standard practice for slurry seal design. Its main objective is to provide guidelines for evaluating mixture properties to determine the proportions of various components for the job-mix formula of a slurry seal. The components involved in the design include emulsified asphalt, mineral aggregate, water, mineral filler, and additives.

The standard aims to ensure that the slurry seal mixture is designed to meet specific performance requirements. By evaluating the properties of the materials used, such as the asphalt emulsion, aggregate gradation, and filler characteristics, the appropriate proportions can be determined to achieve the desired performance.

This standard emphasizes the importance of understanding the properties and behavior of slurry seals to optimize their performance. It provides procedures for laboratory testing and evaluation of the materials, along with guidelines for determining the proportions of each component based on the desired mix design characteristics.