구조보강용 FRP 합침·접착수지의 사용가능시간 분석
Pot Life of Structural Adhesives for FRP Composite Used in Strengthening RC Members
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Pot life of two-component adhesives such as epoxy resin used in saturating FRP composite is defined as a certain time periods which can guarantee the bond performance and workability of epoxy resin. Therefore, adhesion procedure in strengthening RC members should be completed before chemical hardening is going on at job site. It has been known that there are two types of test method to evaluate the pot life of structural adhesive based on apparent viscosity or temperature change. This study is to verify the test methods how to assess pot life of structural adhesive for FRP composites by means of changing in apparent viscosity and means of exothermic reaction temperature proposed in existing test standards. Results of each test method were compared and analyzed, and reasonable test and evaluation method were suggested.
Abstract
Pot life of two-component adhesives such as epoxy resin used in saturating FRP composite is defined as a certain time periods which can guarantee the bond performance and workability of epoxy resin. Therefore, adhesion procedure in strengthening RC members should be completed before chemical hardening is going on at job site. It has been known that there are two types of test method to evaluate the pot life of structural adhesive based on apparent viscosity or temperature change. This study is to verify the test methods how to assess pot life of structural adhesive for FRP composites by means of changing in apparent viscosity and means of exothermic reaction temperature proposed in existing test standards. Results of each test method were compared and analyzed, and reasonable test and evaluation method were suggested.
참고문헌 (7)
- 유영찬, "시설물 보강공법 성능인증을 위한 시험항목․방법 및 평가기준 설정 연구", pp.2006, 건설교통부
- 유영찬, "건축구조물 보수ㆍ보강 공법의 성능평가에 관한 연구", pp.2001, 한국건설기술연구원
- 유영찬, "구조보강용 FRP 함침·접착수지의 사용가능시간 시험방법 비교 연구", 한국콘크리트학회봄학술발표대회논문집, 25(1), pp.297~300 (2006)
- 일본토목학회, "連續纖維しシートを用いたコンクリート", 構造物の補修補强指針 (2001)
- 首都高速道路公團, "補修用エポクシ樹脂施工基準", 首都高速道路公團, 65~ (1982)
- ACI Committee 440, "ACI 440. 2R-02 ,Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Concrete Structures", ~
- "EN 14022 ,Structural adhesives-Determination of the pot life(working life) of multi-component adhesives", ~