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Title |
Standardization of Estimation Function of Concrete Compressive Strength with Non-Destructive Test Using Andesite Aggregates
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Authors |
정란 ; 노윤기 ; 박현수 ; 노영숙 ; 민경원 |
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Keywords |
콘크리트 압축강도실험; 비파괴실험; 반발경도법; 초음파전파속도법; 안산암골재; 복합법; 표준양생; 기중양생; concrete compressive strength; non-destructive test; rebound hammer method; ultrasonic pulse velocity method; andesite aggregates |
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Abstract |
The purpose of this research is to obtain a practical expression for the estimation of compressive strength of concrete using non-destructive testing method such as rebound Schmidt hammer and ultrasonic pulse velocity and to discuss its applicability to the evalution of the compressive strength of existing concrete members. Experimental investigation were carried out to examine the effects of factors such as water-cement ratio, curing sonditions, age of concrete and shape of specimens. According to the test results, following equations are suggested. 1)Rebound hammer method sfc = 12.3 sRo - 94.66 2)Ultrasonic pulse velocity method sfc = 359.1 sVp - 1226.7 Afc = 369.4 AVp - l237.8 ＜air dried curing>
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