PENGARUH LIMBAH TIMAH (tin slag) SEBAGAI BAHAN PENGGANTI AGREGAT KASAR TERHADAP KUAT TEKAN BETON K-250

Abstract

The importance of research in reducing the amount of tin waste produced from the tin smelting process that can no longer be processed and reducing the amount of waste buildup in Warukulon Village, it is necessary to have innovations to use it as an ingredient in a mixture of making concrete, namely by making tin waste ( tin slag) as a substitute for coarse aggregate in the concrete mix. The concrete design uses a job mix design research method that meets the applicable design criteria of SNI 03-2834-2000. In the design process, the planned compressive strength is K-250 (20.75 mpa). By using waste waste as a partial substitute for coarse aggregate with variations of 0%, 5%, 10%, and 15% with each variant, 3 samples of test objects were made so that in total there were 12 test objects from all variants. From the results of the average compressive strength test on the addition of tin waste at 0% variation the compressive strength value is 21.36 Mpa, for the 5% variant the compressive strength value is 17.96 Mpa, for the 10% variant the compressive strength value is 22.59 Mpa. , and for the 15% variant, the compressive strength value is 23.47 MPa.