ESTIMATING COMPRESSIVE STRENGHT OF STEEL FIBER REINFORCED CONCRERTE BY MATURITY METHOD

Abstract

This paper presents estimation of compressive strength of hooked-end steel fiber reinforced concrete by maturity method. Three different curing temperatures (12˚, 22˚and 32˚C) were utilized for this study. The compressive strength of these concretes were estimated for four different volume fraction of fiber (0.5%, 1%, 1. 5% and 2% by volume of concrete).The compressive strength test were done for all samples at the ages of 1, 3, 7 , 14 and 28 days. Temperature-time factor were calculated for all specimens. The results show that concrete with 1.5 percent fiber has the highest temperature-time factor and compressive strength among all curing temperatures. Results show that temperature-time factor increases by increasing the volume fraction of fiber up to 1.5%.