Influence of Hybrid Fibre on the Mechanical Properties of Concrete
S.J. Princess Rosaline1, R.Jayanthi2

1Ms. S.J.Princess Rosaline, Assistant Professor, Department of Civil Engineering, Periyar Maniammai Institute of Science and Technology, Vallam, Thanjavur.
2Dr. R. Jayanthi, Professor & Head, Department of Civil Engineering, Periyar Maniammai Institute of Science and Technology, Vallam, Thanjavur.
Manuscript received on September 22, 2019. | Revised Manuscript received on October 20, 2019. | Manuscript published on October 30, 2019. | PP: 2637-2641| Volume-9 Issue-1, October 2019 | Retrieval Number: A9869109119/2019©BEIESP | DOI: 10.35940/ijeat.A9869.109119
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Abstract: This study presents the experimental investigation carried out to study the mechanical properties of concrete with and without the addition of fibres to it.d Concrete is the most consumed material in the world which has the property of strong in compression and weak in tension. Also plain concrete possess very limited ductility and little resistance to cracking. Hence fibres are introduced in the concrete to improve the tensile strength & brittleness of the concrete. These fibres which are closely spaced and dispersed uniformly in the concrete arrest the micro and macro cracks and improve the tensile strength of concrete. Concrete admixed with such fibres are known as Fibre Reinforced Concrete. The combination of two (or) more fibres called as Hybridization is carried out in this work. M25 grade concrete is designed as per IS 10262:2009 with the volume fraction of 0-1.5%. The workability of the concrete is affected due to the addition of fibres and hence super plasticizers are added to the concrete. The fibres considered for the study are (i) Crimped Steel Fibre (0-1.5%) and (ii) Shortcut Glass Fibre (0.1-0.2%). The behaviour of the hybrid fibre reinforced concrete is investigated by conducting compressive strength test on cube specimen of size 150mmx150mmx150mm and split tensile strength test on cylinder specimen of size 150mm diameter and 300mm height. From the experimental results, the optimum fibre combinations for maximum compressive strength and spilt tensile strength of concrete are identified.
Keywords: Fibres, Hybrid Fibre Reinforced Concrete, Compressive Strength, Split Tensile Strength