The article cites the results of the parallel physico-mechanical trials of commercial cements produced by Russian plants and tested in accordance with GOST 310,4-81 and GOST 30744-2001 standards. The characteristics of the cements, divided into groups according to the transition coefficients, reflect the general trends of transition from GOST 10178-85 brands to strength classes according to GOST 31108-2003.
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