Application of Discarded Rubber Car Tyres as Synthetic Coarse Aggregates in Light Weight Pavement Concretes

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Date

2015

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American Journal of Materials Science

Abstract

The increasingly high cost of building construction materials is a major factor affecting quality housing delivery in Ghana. The current trend of continuous and increasing demand for these natural resources has necessitated extensive research into alternative low-cost construction materials such as recycled materials with comparable properties. The characteristics of concretes produced using locally available discarded rubber car tires as coarse aggregates have been investigated. Batch formulation of 0%, 25%, 50%, 75%, and 100% substitution of natural coarse aggregates with the rubber aggregates is considered. A comparison of the physico-mechanical properties of batch formulations by weight % and volume % have also been investigated. Generally, the compressive strength of the concretes decreased as the percentage of the rubber increased in the two batch formulations. At 25% replacement, the compressive strength of 9.26 N/mm2 (weight %), 11.56 N/mm2 (vol %) as compared to 14.80 N/mm2 and 24.00 N/mm2 respectively for the controlled program were obtained.

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Research Article

Keywords

Concrete, Physico-mechanical properties, Powder processing, Strength

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