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ASTM C40 – Standard Test Method for Organic Impurities in Fine Aggregates for Concrete


This test method covers two procedures for an approximate determination of the presence of injurious organic impurities in fine aggregates that are to be used in hydraulic cement mortar or concrete.

One procedure uses a standard color solution and the other uses a glass color standard.


colorimetric test; fine aggregate; organic impurities

ASTM C40 Accredited Laboratory

Applied Testing & Geosciences, LLC is accredited for performing tests using the ASTM C40 standard.

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