コアドリルの切削効率によるコンクリートの圧縮強度推定方法に関する研究

概要

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Fire damaged concretes are characterized by the fact that part of conspicuously deteriorated level of concrete is formed by a shallow layer 2 to 3 cm from its surface and its boundary with a sound part of deeper concrete from surface is comparatively clear. In the case that a deterioration diagnosis is carried out by a non-destructive test to such a fire damaged concrete, it is important not to carry out the deterioration diagnosis over total sectional area as a mean value, but to carry out it to the deterioration depth of very shallow part of concrete surface. In this report, as a practical method, an estimation method for the comoressive strength of surface layer concrete by cutting efficiency with core drill was investigated basing on an entirely different concept from non-destructive test.
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