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In recent years, use of low heat Portland cement is promoted. However, there was no general method to predict the strength development of the concrete using cement which has wide range of mineral composition. In low heat Portland cement, it was pointed out that application of “Maturity method” was difficult. We considered application of the equivalent age to predict the strength development of concrete using various type of cement. Then, we examined the strength development of mortar using cement has wide range of mineral composition under different curing temperature. As a result, the temperature dependency of strength development of various cements was explained by the equivalent age. The values of the apparent activation energy of cement were dependent on its mineral composition

EFFECTS OF THE MINERAL COMPOSITION OF CEMENT ON THE TEMPERATURE DEPENDENCY OF STRENGTH DEVELOPMENT