EFFECT OF WATER-CEMENT RATIO ON PROPERTIES OF NORMAL CONCRETE (Using 19.50 mm maximum size granite aggregates)

Abstract

ABSTRACT 'The main purpose of this work is the investigations of the effect of water cement ratio on the properties of normal concrete using coarse aggregates of 19.50 mm maximum ize. In all, thirty three concrete cubes were prepared, three each of different water cement ratios in the range of 0.40-0.60 while keeping the other concrete mix ingredients constant. The mix ratio adopted was 1 :2:4, the cubes were cured for 28 days and were subsequently crushed to determine the compressive strength at the various water cement ratios. Other major tests conducted here are: Siev &naly i of the aggregate , Slump & Density test. Test results bows that an increase in watercement ratio leads to an increase in the workability of concrete. Also an increa in water-cement ratio between 0.4 and 0.5 leads to an increase in compre ive trength and density. An increase in water cement ratio in the range 0.5 - 0.6 leads to a decrease in compressive trength and density. Th work provide data bank for concrete propertie within the limit of the scope con idered in thi work. VI