Title : EFFECT OF PARTIAL REPLACEMENT OF SAND WITH FLYASH ON THE COMPRESSIVE AND FLEXURAL STRENGTH OF CONCRETE
Authors : A.D. Pofale1 and Avdhesh Upadhyay2
Publication : 23 - 26 October 2013
Volume :
Pages :
Price : 250
Abstract : Safe and effective disposal of flyash generated from the thermal power plants is very necessary for sustainable development. Also the demand for the natural sand is increasing day by day due to huge construction and infrastructure projects. Hence the present investigation was taken up with a view to study the feasibility of use of locally available flyash generated from the thermal power station as fine aggregate in pumpable concrete mixes by replacing the natural sand partially. M20 and M40 grade of concrete has been studied by using Portland Pozzolana cement. Sand was replaced with 20, 30, and 40 percent flyash by weight for each grade of concrete. Properties examined were compressive strength and flexural strength. Test results indicated that replacement of sand with flyash enhanced the 28-day compressive strength by 5-14% and flexural strength by 3-10% without admixture depending upon the flyash content. It is also observed that workability is increase by 10-27% without admixture depending upon the flyash content over control concrete