This test method covers determination of the amount of material finer than a 75-?? (No. 200) sieve in aggregate by washing. Clay particles and other aggregate particles that are dispersed by the wash water@ as well as water-soluble materials@ will be removed from the aggregate during the test. Two procedures are included@ one using only water for the washing operation@ and the other including a wetting agent to assist the loosening of the material finer than the 75-?? (No. 200) sieve from the coarser material. Unless otherwise specified@ Procedure A (water only) shall be used. The values stated in SI units are to be regarded as the standard. This standard may involve hazardous materials@ operations@ and equipment. This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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