Full Name

AASHTO T21 – Standard Method of Test for Organic Impurities in Fine Aggregates for Concrete


This test method covers two procedures for an approximate determination of the presence of injurious organic compounds in fine aggregates that are to be used in hydraulic cement mortar or concrete. One procedure uses a glass color standard and the other uses a standard color solution.


concrete; fine aggregates; organic impurities

AASHTO T21 Accredited Laboratory

Applied Testing & Geosciences, LLC is accredited for performing tests using the AASHTO T21 standard.

Contact us for more information.


Please submit the following form. We will contact you within one business day.

    How did you hear about us?