AASHTO T-99 pertains to which Proctor Test?

AASHTO T-99 refers specifically to the Standard Proctor Test, which is used to determine the optimal moisture content and maximum dry density of soil. This test is critical in earthwork projects because it helps engineers assess how well soil can be compacted for proper foundation support and stability.

The Standard Proctor Test involves compacting soil into a mold using a standard amount of effort, providing a benchmark for comparison in various construction applications. It is fundamental for ensuring that soil meets necessary specifications for stability and load-bearing capacity. Understanding the implications of the results from the Standard Proctor Test allows engineers to make informed decisions about soil suitability for construction purposes and to implement effective site preparation techniques.