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AASHTO T 21

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AASHTO T 21 2005 Edition, January 1, 2005 Standard Method of Test for Organic Impurities in Fine Aggregates for Concrete

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Description / Abstract: 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 standard color solution and the other uses a glass color standard.

This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety concerns associated with its use. It is the responsibility of the user of this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.