ESTABLISHMENT OF AGE VS STRENGTH CURVE FOR SET OF MATERIALS

Abstract

Thisstudy was directed toward performance of concrete under varying water to cementitious materials ratio.The influence of constituent materials and various mix proportions on compressive strength of concretewasstudied experimentally and reported.At each water/cement ratio varied from 0.25 to 0.55 at constant increment of 0.05. For all the concrete mixes, the compressive strength of concrete was determined at ages of1, 3, 7, 28, 90 and 180 days. The experiment was carried out at the same ambient temperature and the compressive strengths of concrete mixes were found to increase with age but decrease as water-cement ratio increases. From the experimental test results, it wasobserved that the important parameter affecting the strength of concrete is the water/cement ratio and Abrams' generalization law is applicable to concrete in compression for our set of materials. Graphical model isproposed to predict the compressive strength of concrete using Water/Cement ratio.