Karakteristik Beton Segar Self Compacting Concrete dengan Substitusi Ground Granulated Blast Furnace Slag (GGBFS) Menurut Standart Efnarc

Abstract

Self-Compacting Concrete (SCC) is a concrete that can flow and spread under its weight without segregation, fill the entire formwork, and through the reinforcement without mechanical consolidation. One effective way to reduce the environmental impact of cement production is to partially substitute the mineral mixture in concrete. Adding Ground Granulated Blast Furnace Slag (GGBFS) is expected to be a good substitute. The method used in this study is an experimental method by replacing the use of cement with Ground Granulated Blast Furnace Slag (GGBFS) material with variations of 0%, 10%, 20%, 30%, 40%, and 50%. SCC concrete will be tested when the concrete age reaches 7 days, 14 days, and 28 days for concrete compressive strength testing. From the results of fresh concrete testing, it can be concluded that the more GGBFS is added, the fresh concrete value on Slump Flow decreases, Slump Flow T50cm increases, v-funnel increases, and l-shape box decreases. The addition of Ground Granulated Blast Furnace Slag (GGBFS) in this study that meets the requirements of the concrete mixture is the variation of GGBFS 0%, 10%, and 20%. In comparison, the variations of 30%, 40%, and 50% cannot be classified as Self Compacting Concrete because they do not meet all the requirements. .The highest average compressive strength values at the age of 7 days, 14 days, and 28 days are 32.75 MPa, 39.52 MPa, and 50.97 MPa. The optimum compressive strength test of SCC concrete at a variation of 50% at a curing time of 28 days is 50.97 MPa