Influence of Portland Cement Character and Working Condition on the Physical Properties of Concrete

시멘트의 특성과 사용조건이 콘크리트의 물성에 미치는 영향

In this study, the influence of specific surface area of cement, substitution ratio of gypsum anhydrite on the physical properties of concrete were investigated by measurements of slump, air content and compressive strength. The results showed that reducing the specific surface area of cement under 3200$\textrm{cm}^2$/g and using 20% of gypsum anhydrite were desirable to prevent the decrease in workability and strength of concrete in summer season.