Properties of Concrete Mixed with Recycled Crumb Rubber-Tires
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Abstract
The objective of this paper was to study the physical and mechanical properties of concrete mixed with recycled crumb rubber-tires. The density, water absorption, compressive strength, tensile strength, bending strength, modulus of elasticity and modulus of rupture were tested. This study replaced sand with crumb rubber-tires in the ratios of 5, 10, 15 and 20 percent by weight. The results revealed that the density, water absorption, compressive strength, tensile strength, bending strength, modulus of elasticity and modulus of rupture of concrete mixed with recycled crumb rubber-tires decreased with an increase in the amount of crumb rubber-tires. However, the reduction in density and water absorption showed that concrete was lighter and more impermeable. In addition, the concrete had an increased maximum deflection before failure and the modulus of elasticity obtained by the test was about 60-70 percent different from the calculation.
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