ENGINEERING PROPERTIES OF CONCRETE CONTAINING LARGE VOLUME OF RECYCLED TIRE RUBBER

摘要

The test program was carried out to develop reduction factors (RF) for the mechanical properties of crumb rubber concretes. Crumb rubber was used as a partial replacement by volume to the fine aggregate. Four designated crumb rubber content varying from 10% to 30% by total fine aggregate was used. Totally 30 concrete mixtures with three different water cement ratio (0.41, 0.57 and 0.68) were cast and tested at age of 28 days for compressive strength, splitting tensile strength, flexural strength and modulus elasticity. Model reduction factors for harden concrete containing crumb rubber properties were developed. It was found that concrete containing higher volume of crumb rubber to the total volume of aggregate are more sensitive to loss strength.