सिविल और पर्यावरण इंजीनियरिंग जर्नल

A Study on Compressive Axial Behavior of Short Column using Reshaped Waste Tyre Rubber as Partial Replacement of Coarse Aggregate

Abstract

Rajagopal Shanmugam .R, M. Hariharan, and S. Gokulakannan

The increasing demand of natural resources for the concrete production has impacted the surroundings and the concern to protect these natural resources is increasing. Lately, handling and management of scrap is the primary issue faced by the countries worldwide. The waste problem is the most important problems facing the world as a source of the environmental pollution. One of the censorious wastes to be control in today is ‘waste tyre’ because; recent development in transportation has create big number of vehicles, which produce huge quantities of used tyres. Disposing such waste tyres is a critical waste management concern around the world at the moment. Various research works had been conducted in the past which had results that showed reduction in the mechanical energy of the concrete. The present study aims to use scrap tyre rubber by reshaping it as fractional replacement of coarse gravel in the concrete and to examine the outcome of providing a mooring hole of 10 mm in diameter on the surface of the rubber gravel which makes the cement plaster to form a cylindrical mooring between the gravel and the concrete as well work as a rebar to the rubber gravel thereby, increase withstanding power to failure under load which simultaneously increase the strength. The partial replacements of coarse aggregates are done at zero %, five %, ten %, fifteen % and twenty % by quantity of coarse gravel. The resulting concrete beams are tested for the physical characteristics of concrete. The compressive axial behaviour of short column are made with ordinary Portland cement concrete (OPCC)and Reshaped Waste Tyre Rubber Aggregate Concrete (RWTRAC)for various compositions of Reshaped Waste Tyre Rubber Aggregate replacement to coarse aggregate. Consequently the tests on RWTRAC short column of 10 % rubber aggregate replacement are conducted. The load and axial deformation of short column are discussed. The cracking strength of 10% RWTRA alternative concrete was found to be higher than traditional concrete. The initial and ultimate crack of replacement concrete attains higher than conventional concrete. The effect of coarse aggregate substitution by RWTRA will enhance the performance of the short column.