The formulation of the problem is whether recycled solid waste is used as a building material to replace some of the sand in making concrete. This study aims to determine the optimum compressive strength of normal concrete by using recycled solid waste as a substitute for some sand. This study uses a cylindrical shaped test object with a diameter of 10 cm and a height of 20 cm. Solid waste batteries are used with variations of 0%, 10%, 12.5% and 15% for each specimen. Fc’20 MPa, W / C 0.55, and 12 + 2 cm slump compressive strength, with 48 samples (3 specimens for each variation for 7.14,28,28 and 56 days). The results showed that 10% variation of solid waste recycling battery reached the average concrete compressive strength is 22.08 MPa; 12,5% variation of solid waste recycling battery is 25.69MPa and 15% variation of solid waste recycling battery is 18.47 Mpa. Optimum compressive strength with 12,5% variation of solid waste recycling battery is 25.69 Mpa.
Keywords: Solid Waste Recycling Batteries, Sand Substitutes, Compressive Strength