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Title |
A Study on the Compressive Strength Prediction of Crushed Sand Concrete by Non-Destructive Method
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Keywords |
부순모래 콘크리트 ; 반발경도법 ; 초음파속도법 ; 복합법 ; 양생 조건 crushed sand concrete ; rebound method ; ultra-sonic velocity method ; combined method ; curing condition |
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Abstract |
Percentage that aggregate of materials that concrete composed about 70~80% of whole volume, therefore influence that quality of aggregate gets in concrete characteristics are very important. Schmidt hammer and ultra-sonic velocity method are commonly used for crushed sand concrete compressive strength test in a construction field. At present, various equations for prediction of strength are present, which have been used in a construction field. The purpose of this study is to evaluate the correlation between prediction strength by present equations and destructive strength to test specimen, and find out which is a suitable equation for the construction site, a strength test was carried out destructive test by means of core sampling and traditional test. The experimental parameters were concrete age, curing condition, and strength level. It is demonstrated that the correlation behavior of crushed sand concrete strength in this study good due to the perform analysis of correlation between core, destructive strength and non-destructive strength.
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