AASHTO T 290-95 (2020) PDF Download

AASHTO T 290-95 (2020) is a standard method used to determine the water-soluble sulfate ion content in soil. The standard is divided into two parts: sampling and preparation, and the test procedures for determining sulfate ion content. The first part outlines the procedure for collecting soil samples and preparing them to the appropriate size for testing. This ensures that the samples are representative of the site being tested.

The second part of the standard describes two different test procedures for determining sulfate ion content in soils. The choice of method depends on the concentration of sulfate ion in the soil and the desired level of accuracy. These test procedures provide a reliable and consistent method for quantifying the sulfate ion content in soil samples.