期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2016
卷号：5
期号：5
页码：8591
DOI：10.15680/IJIRSET.2016.0505252
出版社：S&S Publications
摘要：Six reinforced concrete beams strengthened in flexure using carbon fiber reinforced polymer (CFRP)laminates subjected to different loads were tested. The main goal is to examine the effect of initial load and load historyon the ultimate strength of strengthened RC beams by externally bonded CFRP laminates. Externally bonded CFRPstrips help in improving the structure performance by reducing deflection and cracking and increasing ultimatestrength. The ultimate capacity of the strengthen beam is controlled by either compression, crushing of concrete,rupture of CFRP and flexural cracking induced de-bonding at concrete-CFRP interface .three beams strengthened withCFRP wraps at bottom were tested with different width . It was observed that the CFRP wraps resulted in significantlyincreasing the stiffness and ductility of the RC beams along with increasing load carrying capacities of the reinforcedconcrete beams. Comprehension of performance of strengthening structures will allow for more precise designs thatwill balance safety and cost. Six beams strengthened with CFRP wraps at tension zone were tested with differentwidth/layers .
