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An Experimental Study on Effect of Hybrid Fibres in Reinforced Concrete


Author(s):

Shabeer. M. K , RVS TECHNICAL CAMPUS, COIMBATORE, TAMILNADU; A. S Priyadharshan, RVS TECHNICAL CAMPUS, COIMBATORE; Rahul. S, RVS TECHNICAL CAMPUS, COIMBATORE; Rasl Muhammed Rafeeq, RVS TECHNICAL CAMPUS, COIMBATORE; Haris. P. P, RVS TECHNICAL CAMPUS, COIMBATORE

Keywords:

Hybrid fibre reinforced concrete (HyFRC), Crimped steel fibre, Non-metallic polyester fibre, compressive strength, flexural strength, Split tensile strength

Abstract:

This project focuses on the experimental investigation carried out on hybrid fibre reinforced concrete (combination of crimped steel fibre and a non-metallic polyester fibre) by varying the steel fibre content( 0.1 to 0.25% of volume of concrete) and keeping a constant polyester fibre content( 0.20% of weight of cement) which was prepared using normal mixing, compaction and curing conditions. The workability studies and the mechanical properties namely, compressive strength on cubes, splitting tensile strength and modulus of elasticity on cylinders, flexural strength on beams were studied for concrete prepared using 4 different proportions of steel fibre content. It is found that all HyFRC specimens shows better mechanical properties than conventional concrete mix. In our study the maximum strength parameters occurred for 0.15% of steel fibre content with constant polyester fibre content of 0.20%. The failure mode in HyFRC is different from that of conventional concrete mix. The fibres are able to hold the matrix together even after extensive cracking. Fibre addition results in decrease in workability and creates difficulty in compaction which may results in reduction in strength for increased fibre content. Steel fibre helps in bridging action and polyester fibre contributes in delaying the formation of micro cracks.


Other Details:

Manuscript Id :IJSTEV2I12213
Published in :Volume : 2, Issue : 12
Publication Date: 01/07/2016
Page(s): 471-474
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