Effect of rice husk ash and plastic fibers on concrete strength

This paper reports the study of compressive strength and split tensile strength of concrete involving rice husk ash (RHA) and plastic fiber in different proportions. M-20 grade of concrete was taken for experimental study. RHA content was used from 5% to 15% at the interval of 5% by replacing Ordinary Portland Cement (O.P.C.) and plastic fibers were used from 1% to 3% at the interval of 1% by replacing the coarse aggregate. Plastic fibers were obtained by cutting the polythene bags into small pieces. The compressive strength and split tensile strength of concrete was checked at 7 days and 28 days of curing period. The results show that concrete samples having RHA and plastic fibers showed better strength as compared to controlled concrete samples.