Title : STRAIN ANALYSIS OF RC T-BEAMS SIDE-BONDED IN SHEAR WITH GFRP SHEET
Authors : K.C. Panda (1), S.K. Bhattacharyya (2) and S.V. Barai (3)
Publication : 13th – 16th February 2013
Volume :
Pages : 12-Jan
Price : 250
Abstract : This paper presents an experimental investigation on strain analysis of a reinforced concrete (RC) T-beams strengthened in shear with side bonded glass fiber reinforced polymer sheet (GFRP). A total of eighteen (18) full scale simply supported RC T-beams are tested. Nine control beams are tested in three different series without GFRP wrap. The first series, without stirrups, only the stirrups are provided at the support and loading points, i.e. total of six stirrups, 2 at the support and 1 at the loading points, are provided to prevent local shear failure. The second series of control beam specimen, the stirrups are provided at 300 mm c/c whereas in third series, the spacing of the stirrups is 200 mm c/c. Another nine beams are strengthened in shear with one, two and three layers of GFRP sheet on side of the web of the T-beams for each type of stirrup spacing. This study is exclusively carried out on the strain analysis of GFRP, transverse steel reinforcement and longitudinal steel reinforcement. It is observed from the experimental result that the strain in the GFRP sheet is higher in the specimens strengthened with one layer of GFRP sheet, as compared to two and three layers in all the series. As expected, the stiffness of GFRP sheet is indirectly proportional to the strain