AASHTO T 135-13 (2021) PDF Download

The AASHTO T 135-13 (2021) standard outlines the procedures for evaluating the behavior of hardened soil-cement specimens when subjected to repeated wetting and drying. The purpose of this test is to assess the soil-cement losses, moisture changes, and volume changes (swell and shrinkage) that occur during this cycling process.

To conduct the test, compacted soil-cement specimens are prepared in a mold before cement hydration. The compaction is carried out using the specific procedure described in the AASHTO T 134 standard, ensuring that the specimens achieve maximum density at the optimum moisture content.

The wetting-and-drying test aims to simulate the real-life conditions that the soil-cement mixture may be exposed to over time. By subjecting the hardened specimens to repeated cycles of wetting and drying, the standard provides a means to evaluate the durability and long-term performance of the soil-cement mixture.