DESIGN AND DEVELOPMENT OF CEMENT WITH INCREASED MINOR ADDITIONAL CONSTITUENTS AND ALUMINATE PHASE～PART 2：FUNDAMENTAL PHYSICAL PROPERTIES OF CONCRETE～

Abstract

In this study, the basic physical properties of concretes were confirmed by using cement in which the C₃A content of base cement was increased with respect to the increase of small amount of mixed components, in order to achieve both reduction of CO₂ emission and maintenance of waste intensity. As a result, by using a base cement with an amount of C₃A increased by 12.9mass％ with respect to concrete using conventional cement, the strength of age of 7 days due to increase in the amount of mixture of limestone fine powder or fly ash The expression was confirmed to be equivalent. Moreover, as a result of estimating adiabatic temperature rise from inverse analysis when limestone fine powder and blast furnace slag fine powder are mixed at 10mass％ each, the final temperature rise amount is lower than that of concrete with a small amount of mixed component amount of 5mass％ It was suggested that the coefficient would be large. However, it shows a tendency different from the maximum temperature obtained from the simple adiabatic temperature rise test, and it is considered that there is still room for verification of the estimation of adiabatic temperature rise by back analysis.