EFFECT OF CONFINEMENT USING GFRP WRAP ON STRENGTH PROPERTIES OF CONCRETE REPLACING COARSE AGGREGATES WITH BRICK BALLAST by Gagandeep Singh
Abstract
Concrete of grade M25 was produced and the study on response of the concrete under compressive loading was done by partially replacing the coarse aggregate by brick ballast. The percentage by which the coarse aggregate were replaced by brick ballast was 0%, 20%, 30% and 40% (by weight). The strength properties of the concrete with brick ballast were then compared with conventional concrete samples. Compressive strength of concrete made by brick ballast surpassed the compressive strength of conventional concrete by 22%. Single and double GFRP wraps were used to confine the brick ballast concrete and comparison of compressive strength was studied with the conventional and brick ballast concrete (without wrap). Results showed that with the increase in confinement using wraps the brittle failure gets reduced thereby increasing the compressive strength. By using the brick ballast as replacement of coarse aggregate, concrete produced is lighter in weight in comparison to the conventional concrete, by 7% if 40% coarse aggregates are replaced by the brick bats. If concrete with the brick ballast is used practically than dead load will also get reduced, hence giving a more economical and sustainable solution to building industry
