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Comparative Study on Test Methods for Mechanical Properties of Structural Adhesives Used in FRP Strengthening  

You, Young Chan (한국건설기술연구원 건축구조.재료연구실)
Choi, Ki Sun (한국건설기술연구원 건축구조.재료연구실)
Kim, Keung Hwan (한국건설기술연구원 건축구조.재료연구실)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.12, no.2, 2008 , pp. 103-112 More about this Journal
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.
Keywords
Compression; Flexural strength; Structural adhesive; Test method; Tensile lap-shear strength;
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