Thursday, 9 July 2015

Experimental Investigation on GFRP Wrapped



Experimental Investigation on GFRP Wrapped R.C Beam Column Joint
T.Mariselvam1, N.Sakthieswaran2
1PG Student, Department of civil engineering, Regional Centre of Anna University, Tirunelveli
2Assistant Professor, Department of civil engineering, Regional Centre of Anna University, Tirunelveli

Abstract This paper presents the seismic behavior of beam column joint using Glass Fiber Reinforced polymer (GFRP) wraps. The dimensions of the specimens were fixed to be 0.2 m x 0.15 m cross section and the height of column was fixed as 1m and the cantilever length of the beam was fixed as 0.8m to carry out the experimental work. The column portion was reinforced with 4 No’s of 8mm diameter in tension side and 4 No’s of 8 mm diameter in compression side. The beam portion was reinforced with 2 No’s of 8 mm diameter in tension side and 2No’s of 8 mm diameter in compression side. The performances of the specimens are compared in terms of lateral load versus displacement curves. The grade of concrete proposed was M20 and the grade of steel was Fe 415. Four numbers of exterior beam column joint were cast and tested under lateral loading. The specimens was designed as per IS 13920:1993. Out of four specimens one was control specimen and the remaining three specimens were wrapped with 1 layer, 2 layers, and 3 layers of GFRP. Results by experimental work shows that GFRP specimens carries more load carrying capacity than the control specimen.
Keywords column joint, GFRP sheet, Number of wrap, Number of GFRP layers, Reinforcement

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