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Title |
Comparative Study on Test Methods for Mechanical Properties of Structural Adhesives Used in FRP Strengthening
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Keywords |
압축강도 ; 휨강도 ; 구조용 접착제 ; 실험방법 ; 인장전단접착강도 ; Compression ; Flexural strength ; Structural adhesive ; Test method ; Tensile lap-shear strength |
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Abstract |
Pull-off test is generally used to evaluate bond strength of FRP composite with concrete at job site. However, some damages on FRP composites can not be avoided during pull-off test and moreover test range of pull-off strength is limited by maximum tensile strength of concrete. Accordingly, it is required to set-up a test method that can evaluate mechanical properties of structural adhesive indirectly prior to pull-off test. In this study, the standard test methods for structural adhesive which can simply evaluate mechanical performance of adhesive were suggested through comparative experiments from each different standard in various countries. Particularly, gluing thickness of adhesive in tensile lap-shear tests, the section dimension of compression and bending test specimens become unified, and standard test specimen size is achieved by test results.
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