This test method covers determination of compressive strength of cylindrical concrete specimens such as molded cylinders and drilled cores. It is limited to concrete having a unit weight in excess of 800 kg/m³ (50 lb/ft³).
AASHTO T 22-14
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Standard Method of Test for Compressive Strength of Cylindrical Concrete Specimens (ASTM Designation: C39/C39M-05)
American Association of State Highway and Transportation Officials , 2014