Pemanfaatan Limbah Karbit Sebagai Bahan Tambah Pada Mortar Ditinjau Dari Kuat Tekan

Abstract

Infrastructure development that occurs causes cement demand to increase each year To reduce cement production, other alternative substitutes are needed, one alternative material that can be utilized is carbide waste. Utilization of carbide waste if added as material needs to be handled first before use. The addition of carbide waste as an ingredient in mixing mortar is expected to give a pozolanic reaction so that it will increase the compressive strength of the mortar. The aim of this research is to prove whether carbide waste as an added material can reach the M type mortar compressive strength based on SNI 6882-2014. This study used an experimental method with a total of 36 cube specimens measuring 50 mm each side, a cement water factor of 0.4, the compressive strength of an M-type plan (17.2 MPa). The specimens consisted of mortars with added carbide waste materials with variations of 0%, 2.5%, 5%, 7.5%, 10%, and 12.5% ​​by weight of cement. The results showed that all variations with the addition of carbide waste can increase the compressive strength to exceed the quality of type M quality (17.2 MPa). Average compressive strength of mortar with the addition of carbide waste variations of 0%, 2.5%, 5%, 7.5%, 10%, and 12.5% ​​of the weight of cement at 28 days respectively as follows are 20, 67 MPa, 23.33 MPa, 22 MPa, 26.67 MPa, 24.33 MPa, 19 MPa. Maximum compressive strength occurs at a variation of 7.5% carbide waste