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AASHTO T332 – Standard Method of Test for Determining Chloride Ions in Concrete and Concrete Materials by Specific Ion Probe


This method covers the procedures for determining acid-soluble chloride ions in concrete and concrete mix ingredients.

The age of concrete, mortar, or hydrated portland cement at the time of sampling will have an effect on the acid-soluble chloride ion content. Therefore, unless early age studies are desired, it is recommended that the material be well cured and at least 28 days of age before sampling.


chloride content; chloride profile; concrete bridges; on-site testing; reinforcement corrosion; specific ion probe