Investigation on Retrofitting of Reinforced Concrete Beam with Glass Fiber and Banana Fiber Mat

S. Jayashree, S. Ramakrishnan, V. Senthilkumar, M. Rajendran, S. Suchithra, S. Sanjaygandhi
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引用次数: 1

Abstract

Abstract. Concrete is the predominant material in the construction industry. To be sustainable, the old Reinforced Concrete (RC) buildings should be retrofitted, and the life of the building should be extended. Experimental study has been attempted to investigate the load carrying capacity of concrete beam strengthened with glass fiber and banana fiber mat. The primary aim of this study is to retrofit the RC beam specimen to enhance the load carrying capacity. All the beams were casted with the same grade of concrete (M30) and same structural detailing. Two-point symmetrical loading were given to the control beams to obtain load at initial crack and ultimate load. Then the beams other than control beams were loaded till it showes initial crack and then retrofitted with banana fiber and glass fiber bonded externally with resin. The retrofitted beams were tested for ultimate load performance. Load carrying capacity was higher for both retrofitting but the beam retrofitter with glass fiber showed significant improvement in the ultimate load carrying capacity.
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玻璃纤维与香蕉纤维垫层加固钢筋混凝土梁的研究
摘要混凝土是建筑工业的主要材料。为了可持续发展,应对旧钢筋混凝土(RC)建筑物进行改造,延长建筑物的使用寿命。对玻璃纤维和香蕉纤维垫层加固混凝土梁的承载能力进行了试验研究。本研究的主要目的是对RC梁试件进行改造,以提高其承载能力。所有的梁都浇铸了相同等级的混凝土(M30)和相同的结构细节。对控制梁施加两点对称荷载,分别获得初始开裂荷载和极限荷载。然后对除对照梁外的其他梁进行加载,直至出现初始裂缝,然后用香蕉纤维和玻璃纤维外粘树脂进行加固。改造后的梁进行了极限荷载性能测试。两种加固方式的承载力均较高,但玻璃纤维加固梁的极限承载力有显著提高。
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