AASHTO T 332-07 (2020) PDF Download

AASHTO T 332-07 (2020) is a standard method of test that specifies the procedures for determining the concentration of chloride ions in concrete and concrete materials using a specific ion probe. The test focuses on measuring acid-soluble chloride ions in the samples. It is important to note that the age of the concrete or cement at the time of sampling can affect the chloride ion content, so it is recommended to allow the material to cure for at least 28 days before sampling unless early age studies are specifically required.

The standard provides guidance on the equipment and materials needed for the test, including the specific ion probe and the acid solution that will be used to extract the chloride ions from the sample. The procedure involves preparing the sample, which may include grinding or crushing the concrete or concrete material to achieve a uniform particle size. The acid-soluble chloride ions are then extracted using the acid solution, and the concentration of chloride ions is determined using the ion probe.

This standard is important for assessing the chloride ion content in concrete and concrete materials, as chloride ions can contribute to the corrosion of reinforcement steel and deteriorate the structure over time.