Experimental Investigation on Retrofitting of High Performance Reinforced Concrete Beam Using Bamboo Mat

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K.Kantharuban , Dr.A.Mani

Abstract

The justification of Present study to find recital of flexure and shear beams produced from high performance concrete (HPC) by means of inorganic admixture like Silica Fume and Fly ash at numerous replacements. The cement binder ratio (w/c) adopted is 0.35. The main aim of designed mix is to attain 60 MPa. Seven different combinations were examined M1 to M7 are cast with  different percentages of 0%, 5%, 7.5% and 10% auxiliary of Silica Fume and alternative set of examples with 0%, 5%, 7.5% and 10% spare of SF (Silica Fume) with 10% constant supernumerary of FA (Fly Ash)  to revise the involuntary properties. That end result shows that the best potential substitutes of silica fume 7.5%. and 10% of Fly ash is added the optimum substitution of SF is 5%. Totally fourteen beams of 100 x 200 x 2000mm size were cast, every specimen has tested for flexure and shear. The Load at first crack, deflection, and the ultimate load are noted for each mix and comparative study is done for Load – deflection (P-∆), first crack - ultimate load, the identical failed beams are rehabilitated with Bamboo mat with one layer and again tested for shear and flexure. The results are then compared with the initial results. Comparison has been made between the high performance reinforced concrete beams and rehabilitated beams using Bamboo mat.

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