Pemanfaatan limbah batu bata merah sebagai substitusi agregat halus dan abu sekam padi sebagai substitusi semen pada beton normal

Abstract

This research aims to utilize brick waste as a substitute for fine aggregate with variations of 0%, 3%, 6%, 9%, 12%, and 15% of the weight of sand and rice husk ash as much as 10% of the weight of cement as a cement substitute in making concrete. In this study, the design quality of the concrete used was 25 MPa with concrete curing for 28 days. Calculation of concrete mix planning using SNI 03-2834-2000. The number of samples made in this research was 60 samples. This research was conducted with the aim of determining the effect the substitution of brick waste as fine aggregate and rice husk ash as a cement substitute on compressive strength. Research results show that the use of brick waste as a substitute for fine aggregate with variations of 0%, 3%, 6%, 9%, 12% and 15% can increase compressive strength. Concrete compressive strength can increase up to 23.4% of normal concrete. The optimum compressive strength value obtained in the LBB 12% - ASP 10% variation was 31.23 MPa.