fatigue crack propagation behavior of rc beams strengthened with cfrp under high temperature and high humidity environment
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2017
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Abstract
Numerical and experimental methods were applied to investigate fatigue crack propagation behavior of reinforced concrete (RC) beams strengthened with a new type carbon fiber reinforced polymer (CFRP) named as carbon fiber laminate (CFL) subjected to hot-wet environment. J-integral of a central crack in the strengthened beam under three-point bending load was calculated by ABAQUS. In finite element model, simulation of CFL-concrete interface was based on the bilinear cohesive zone model under hot-wet environment and indoor atmosphere. And, then, fatigue crack propagation tests were carried out under high temperature and high humidity (50°C, 95% R · H) environment pretreatment and indoor atmosphere (23°C, 78% R · H) to obtain a-N curves and crack propagation rate, da/dN, of the strengthened beams. Paris-Erdogan formula was developed based on the numerical analysis and environmental fatigue tests.
| Reference Key |
li2017internationalfatigue
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|---|---|
| Authors | ;Dongyang Li;Peiyan Huang;Guang Qin;Xiaohong Zheng;Xinyan Guo |
| Journal | 19th international congress of chemical and process engineering, chisa 2010 and 7th european congress of chemical engineering, ecce-7 |
| Year | 2017 |
| DOI |
10.1155/2017/1247949
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