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Title |
An Experimental Study on Flexural Tensile Strength and Bond Strength Between Concrete-to-Concrete
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Keywords |
부착강도 ; 휨인장강도 ; 신콘크리트 ; 구콘크리트 Bond strength ; Flexural tensile strength ; New concrete ; Old concrete |
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Abstract |
The purpose of this paper is to investigate the bond strength between old and new concrete as well as flexural tensile strength of concrete. To achieve this purpose, a comprehensive experimental program has been set up and strength tests using a series of specimens have been carried out. The present study represents that the flexural bond strength between old and new concrete is much smaller than that of flexural tensile strength. The ratio of bond strength to flexural tensile strength ranged through 15～27%. It is seen that concreteto-concrete bond strength has been affected by curing condition. Also, test results of tensile strength show that recommendation by ACI 363 committee is estimated to be more realistic than another recommendations for predicting tensile strength of concrete.
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