AASHTO T21 ASTM C40

This Video is One in an Eight Part Series designed to assist the Ready Mixed Concrete, Asphalt, Aggregate, or other construction professional understand the required steps of this procedure. For the entire Series Visit Our Website.

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What if the organic impurities are high?

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Sample prepad sieve # 4 passing material

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How Can we Konow that sample pass or fail

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In this procedure there is not an actual "Pass or Fail" result. If the solution is darker than the #3 on the color chart, additional tests are required to determine if the materials in the sand will negatively impact strength results.