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ASTM C563 – Standard Guide for Approximation of Optimum SO3 in Hydraulic Cement


This guide describes the determination of approximate optimum SO3 for maximum performance as a result of substituting calcium sulfate for a portion of the cement.


blended hydraulic cement; calcium sulfate; cement; compressive strength; gypsum; hydraulic cement; optimum sulfate content (of cement); portland cement; strength (of cement); sulfate content (of cement)

ASTM C563 Accredited Laboratory

Applied Testing & Geosciences, LLC is accredited for performing tests using the ASTM C563 standard.

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