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《Sichuan Building Science》 2017-04
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Experimental study on mechanical performance of RC beams strengthened with BFRP plates in salt environment

CHANG Chengzhang;YANG Tao;ZHENG Hongyu;DENG Wenming;College of Civil Engineering and Architecture,Guangxi University;Guangxi Key Laboratory of Disaster Prevention and Engineering Safety;Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education;  
To study the mechanical performance of reinforced concrete( RC) beams strengthened with BFRP plates in salt environment,weathering tests and monotonic static tests were carried out on ten RC beams strengthened with BFRP plates respectively. Influence of parameters including concentrations of slat solution and soaking time on the mechanical performance of the beams was investigated.Experimental tests showed that the ultimate bearing capacity of the beams little decreased after they were soaked in salt solutions with concentrations of 3. 5%,7. 0% and 10. 0% for 60,120 and 180 days respectively. However,the ultimate deformation capacity of the beams presented downward trends with the increase of solution concentration and soaking time. Debonding between BFRP plates and RC beams usually happened at the final failure stages. The debonding failure surfaces gradually moved from concrete at the bottom of the RC beams to the interfaces between BFRP plates and RC beams over time.
【Fund】: 广西科学研究与技术开发计划项目(桂科攻1598009-1);; 广西高等学校科学研究项目(KY2015YB006)
【CateGory Index】: TU375.1
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