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ISO 679:1989 Methods of testing cements -- Determination of strength
standard by International Organization for Standardization, 07/01/1989
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Specifies a method of determining the compressive and flexural strengths of cement mortar and describes the reference procedure. Allows the use of alternative procedures only in well defined cases. Covers laboratory and equipment, mortar constituents, preparation of mortar and test specimens, curing of test specimens, and test procedures.