Experimental investigations on the behaviour of rubberised concrete and its use in structural components

Abstract

A ton of waste tyre is created around the world. It is beyond the realm of imagination to expect to release the waste rubber tyre in the earth since they decay very gradually and cause heaps of contamination. In this manner, it is important to have a significant utilization of these wastages. The point of this exploration is to ponder the likelihood of utilizing waste tyre rubber in cement concrete to supplant coarse aggregate. The test program was done to create data about the mechanical properties of rubberised cement concrete. The samples were set up with rate substitutions of the coarse aggregate by 4, 8, 12 and 15 per cent waste tyre rubber aggregate. In addition, a control mix with no substitution of the coarse aggregate was created to make a relative examination. The readied tests comprise of cubes, cylinders, and beams. Material properties were considered before making concrete. Slump test was directed on fresh cement concrete to consider workability. The samples were tried for compressive strength, split tensile strength, flexural strength, modulus of elasticity and impact strength. From this investigation, ideal percentage of rubber crumbs that can be utilized to supplant coarse aggregate in ordinary cement concrete is discovered. The Column-Beam joint is a basic part in a structure as it is basic in building up a definitive limit of all individuals that meet at the joint. The joints are required to have adequate quality and solidness to oppose the interior powers incited by the encircling individuals. This turns out to be much increasingly imperative on account of seismic stacking. An endeavor is made to think about the conduct of Column-Beam joint on the impact of cyclic stacking on outside Column-Beam joint, where the coarse aggregate in cement concrete are moderately supplanted by crumb rubber aggregate. The joint is planned according to the arrangements of IS 456:2000 and SP-34. Column-Beam joint samples of the concrete with various rates of coarse aggregate substitution were thrown and tested. The examined parameters are the malleability, joint contortion, load versus displacement curve, standardized stiffness and split pattern emerging because of cyclic stacking. ANSYS finite element package is utilized for the numerical examination. The numerical outcomes are in great concurrence with trial results. Further investigation is led to know the attainability of utilizing waste tyre rubber aggregate in railroad sleepers. For that, prestressed solid sleepers were cast at Railway yard Tirumangalam, Madurai with 0%, 6%, 8% and 12% rubber aggregate. newline