earticle

영어

The demand for high-stength concrete is increasing worldwide, and the elastic modulus plays a very important role as a material variable in structual calculation considering the safety and usability of buildings, The elastic modulus estimation equation is presented independently by each country and association, and thus estimated value also shows a big difference. In this study, five types of high-stength concrete were produced, and the error with the previously suggested estimation equation was evaluated using the measured values. The compressive strength ranged from about 72 to 128Mpa, and the elastic modulus was 41 to 50 GPa. As a result, the CEB-FIP estimation equation showed the smallest error from the measured value of this study, so it was foud that the reliability in prediction the elastic modulus was the highest. The elastic modulus estimation equation suggested by the domestic regulation KDS estimates the elastic modulus lower than the measured value, which is thought to lead to overdesign, and it is thought that improvement is needed to further match the measured value even in the high-strength area.