AASHTO T 155-13 (2021) PDF Download

The AASHTO T 155-13 (2021) standard describes a method for testing the water retention properties of liquid membrane-forming curing compounds for concrete. The purpose of this standard is to determine the effectiveness of these compounds in reducing moisture loss during the early hardening stage of concrete.

The test method involves laboratory testing, where the curing compound is applied to a concrete specimen. The specimen is then subjected to controlled conditions to simulate the early curing period. The amount of moisture loss from the concrete specimen is measured and compared to a control specimen that is not treated with the curing compound.

The efficiency of the curing compound is determined by comparing the moisture loss from the treated specimen to the control specimen. A lower moisture loss in the treated specimen indicates a more effective curing compound that helps retain water in the concrete during the early hardening stage.