Browsing by Author "Gajendra, R"

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    Hybrid Fiber Reinforced Concrete with the addition ofStyrene Butadiene Rubber (SBR) Polymer -An Experimental Study
    (2018-06-22T09:29:49Z) Gajendra, R; Varun; Ravi Kumar, Reddy; Anush, BS
    Fibre Reinforced concrete is a well-known composite material used in civil engineering and other applications. Conventional concrete has poor tensile strength so its capacity to absorb Energy is limited. The weakness in tension zone can be overcome by strengthening their matrix with reinforcing fibrous materials. Presence of fibres in concrete mix improves tensile strength, flexural strength and structural quality of the material as well. At the same time it is well known that the concrete is porous and the porosity is due to water-voids, air voids or due to inherent porosity of gel structures itself and the strength of the concrete is naturally reduced. It is investigated and conceived by many research workers that dropping of porosity results in improvement in the strength of concrete. The addition of monomer (Styrene Butadiene) and consequent polymerization is the modern practice adopted to decrease the present porosity of the concrete and to improve the strength. The present study is done on the mechanical behaviour of hybrid fibre reinforced polymer concrete. Experimentation includes compression strength test, flexural strength and split tensile strength test for M30 grade concrete mix, where concrete was reinforced with 2% fibres with combinations of Crimped fibres + Hooked End steel fibres, To this combination SBR polymer was added in 0, 5, 10, 15, 20 and 25 percentages by the volume of water and strengths were found out. The results indicated that as the polymer content increased to up to 15% showed that strength and workability also increased and decreases beyond all. There was a considerable increase in compressive strength, but there was a great strength achievement in tensile strength and flexural strength for 15% polymer content.