衝撃弾性波によるコンクリートの圧縮強度推定方法に関する基礎的研究 : コンクリートの使用材料および調合の違いが弾性波速度に及ぼす影響

概要

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This paper describes a nondestructive inspection method for estimating compressive strength of concrete using velocity of impact-elastic wave, and explains influence of variations of concrete materials and mix proportions on relation between the velocity and the strength for improving the accuracy of estimation. First, we survey the recent studies about methods to measure velocity of impact-elastic wave and relations between the velocity and compressive strength. Next, experiments to clear influential factors on the velocity, such as W/C, slump, bulk volume of coarse aggregate and cement type, were carried out using cylinder specimens. The results to describe influence of the four factors on relation between elastic wave velocity and compressive strength were presented. Finally, an appropriate estimating formula was given by fitting to the experimental relation.
社団法人日本建築学会の論文
2005-01-30