International Journal of Civil and Structural Engineering Research ISSN 2348-7607 (Online) Vol. 6, Issue 2, pp: (1-5), Month: October 2018 - March 2019, Available at: www.researchpublish.com
Behavior of RC Short Columns with Partial Replacement of Fine Aggregate by Quarry Dust Using GFRP Reinforcement Kalaivani.M1, Vennila.G2, Ramesh.S2, Angu Senthil.K1 1
Assistant Professor, 2 Professor
1,2
Department of Civil Engineering, K.S.Rangasamy College of Technology, Tiruchengode-637215, Tamil Nadu, India
Abstract: This paper presents the experimental investigations of concrete specimens reinforced with Glass fiber reinforced plastic (GFRP) reinforcements and quarry dust to improve the properties of concrete specimen. GFRP bars were used to reinforce the concrete columns instead of conventional rebars and that are experimentally investigated under axial compression to assess structural behavior of concrete. Four sets of column specimens of cross section 100 mm X 100 mm of length 600 mm were cast and tested under axial loading. Load-deformation characteristics of the specimens were plotted and energy absorption capacity, stiffness and ductility factor were calculated. The experimental results show that the column with GFRP reinforcement and quarry dust increases the strength properties of the column specimen. An analytical model has been developed using ANSYS 16 software in order predict the load deformation behavior of all specimens. The analytical results have been validated with the experimental results. It was found that the column with quarry dust and GFRP reinforcements shows better performance in all aspects. The investigation suggests that GFRP rebars as the best alternative to steel rebars in compression members. Keywords: GFRC bars, Quarry Dust, columns, axial compression, ANSYS 16.
I. INTRODUCTION The main problem in RC structural element is due to corrosion. The high cost associated with corrosion of steel reinforcements demands an alternative for steel. FRP reinforcing bars provides a great alternative to steel reinforcement which leads to corrosion. Two types of FRP reinforcing bars are used alternate to steel bars specifically Glass Fibre Reinforced Polymer and Carbon Fibre Reinforced Polymer. FRP materials in general offer a lot of advantages over the conventional steel, including one quarter of the density of steel, greater tensile strength than steel, no corrosion even in cruel chemical environments and neutrality to electrical and magnetic disturbances. Quarry dust is a byproduct obtained from the devastating process of stone during quarrying activities and it can be used as partial replacement of fine aggregate in concrete which leads to the reduction in the cost of concrete production. Hogr Karim 6 investigated the behavior of concrete columns reinforced with GFRP bars and GFRP helices as longitudinal and transverse reinforcement respectively tested under axial compression. By reducing the spacing of the GFRP helices leads to improves the strength and ductility of the concrete specimens. Raga sai11 investigated the consumption of quarry dust generated from quarries in concrete. Quarry dust satisfies the reason behind the alternative material as a alternate for sand. From the results, it is concluded that 40% replacement of fine aggregate by quarry dust can be used as a replacement for fine aggregate. Venu12 presented the behavior of RC beams under flexure when reinforced with the GFRP rebars as a replacement of steel reinforcement. The deformation capacity of beams is comparable to that of steel reinforced beams. The effective utilization of GFRP rebar increases the flexural load carrying capacities, shear capacity and bending capacity of the beam. The objective of the study is to analyze the compressive behavior of Reinforced concrete short columns reinforced with GFRP rebars and partial replacement of fine aggregate by Quarry dust, under axial compression. To interpret the load versus axial deformation characteristics of the columns. To compare the experimental results of column with analytical investigation using ANSYS.
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