1.1 This specification covers standard sand for use in the testing of hydraulic cements.1.2 The values stated in SI units are to be regarded as the standard.1.3 Values in SI units shall be obtained by measurement in SI units or by appropr This specification covers standard sand for use in the testing of hydraulic cements. Sand shall meet the requirements with respect to grading, source of sand, and absence of undesirable air entraining characteristics. Sieve analysis shall be performed