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http://dx.doi.org/10.12652/Ksce.2010.30.3A.221

A Study for Creep Effect of the Interfacial Adhesive Layer on the Behavior of Concrete with CFRP  

Park, Yong Deuk ((주)한화건설 토목환경사업본부)
Shin, Seung Kyo ((주)한화건설 기술연구소)
Kang, Suk Hwa ((주)한화건설 토목환경사업본부)
Lim, Yun Mook (연세대학교 토목공학과)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.30, no.3A, 2010 , pp. 221-228 More about this Journal
Abstract
External bonding of carbon fiber reinforced polymer (CFRP) sheets has been widely accepted as a popular method for strengthening of deteriorated RC structures. The long-term behavior of CFRP-strengthened RC structure is often affected by that of the interface between CFRP sheets and concrete. This study aims at applying a viscoelastic model to describe the creep behaviour of the adhesive layer bonding CFRP sheet to concrete, the CFRP-concrete interface. Reviews of available models on concrete creep behavior have been first carried out and then new FE analysis model is proposed. The proposed FE analysis model based on the maxwell model has been verified by previous experimental results. It is shown that the creep effect of interfacial adhesive layer is very important on the long-term behavior of concrete structures strengthened with CFRP.
Keywords
interface; viscoelastic model; creep behavior; CFRP strengthening; maxwell model;
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