Studying the Flexural Behaviour of Hemp Fiber Reinforced Concrete Beams

An attempt was made to acquire low-cost construction materials using natural fibres in this research work. Fibers are generally used in concrete because of both plastic shrinkage and drying shrinkage and bridge across the cracks that form in concrete to regulate cracking. In this work, hemp fibres have been used to harness the tremendous potential of renewable resources in the non-food areas of natural fibres. The fibres used were 0.25 percent, 0.5 percent, 0.75 percent and 1 percent fibres in volumetric ratios. The optimal percentage of Hemp fibre in concrete that is found to result in a substantial improvement in the mechanical properties of concrete has been tried to ascertain. Grade M25 reinforced concrete beams have been cast under two-point loading and checked. For RC beams with hemp fibres, the test results were found to be appreciable. The load capacity of hemp fibre reinforced concrete beams has been found to be increased by an increase in the proportion of hemp fibres. An increase of 25% in beam load capacity with 0.5% hemp fibres was observed. Those non-food areas of natural hemp fibre can also be used effectively in the design of economical constructions.

Author(s) Details

Dr. K. Ramadevi
Department of Civil Engineering, Kumaraguru College of Technology, Coimbatore, India.

Dr. S. Deepa Shri
Hindusthan College of Engineering and Technology, Coimbatore, India.

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