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Standard specifications for the gradation of aggregates are maintained by ASTM [https://www.astm.org/Standards/D2940.htm D2940
Standard specifications for the gradation of aggregates are maintained by ASTM [https://www.astm.org/Standards/D2940.htm D2940
See [[jar test]] for on-site verification testing protocols.
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[[category:materials]]
[[category:materials]]