Abstract
A procedure is proposed for evaluating the efficiency of chemical and mineral admixtures in early cement hydration with the use of calorimetric data and with allowance made for the selective effect of admixtures on the hardening process. The concepts of admixture efficiency and admixture–cement compatibility are formulated and are shown to be of practical importance. The proposed approach is substantiated using thermokinetic results on the effects of various admixtures on the hydration of different cements, and the underlying mechanisms are discussed.
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