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Title |
A Study on the Development of Flat-Ring Type Restrained Test Method and Performance Evaluation for Evaluating Shrinkage Cracking Properties of Concrete in Early Age
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Authors |
김규용 ; 최형길 ; 이의배 ; 남정수 ; 한민기 |
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Keywords |
판상-링형 구속시험방법 ; 수치해석 ; 구속수축균열 Flat-ring type restrained test method ; Numerical analysis ; Restrained shrinkage crack |
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Abstract |
In Concrete, shrinkages occur like plastic shrinkage and drying shrinkage in the early age because of evaporation and transfer of moisture. Within the country, the crack test standardized by KS is used to test the drying shrinkage of the concrete by using the restricted drying shrinkage of Dumbbell type mold, but this test is for the cracking-point and the restricted shrinkage stress. Thus it is difficult to valuate the crack quantitative test. In this study, it is intended to develop the Flat-ring type restrained test method for the shrinkage deformation movement of the concrete and to provide the quantitative data for evaluating the cracks in concrete. And it suggest the proper specimen diameter and quantitative test method about shrinkage crack properties on Flat-ring type restrained test method. And Verified the suitability.
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