Adiwijaya, Rita Irmawaty, Irka Tangke Datu, Khairil, Taufiq Rochman, Vita Fajriani Ridwan, Muhammad Suradi, Abdul Kadir Muhammad, Budhy Setiawan, Rifaldi Yatsam
Industrial by-products, such as Iron Slag (IS) and Stone Ash (SA), can replace aggregates in concrete, but research on their mechanical performance and durability, particularly in Self-Compacting Concrete (SCC), is still limited. Using these materials supports sustainable construction principles while improving material efficiency. This study evaluates the effect of replacing coarse and fine aggregates with Iron Slag and SA, respectively, on the compressive strength, durability, and practical implementation of concrete in structural applications. The research was conducted experimentally with four SCC concrete mix variations: BSI-N (control), BSI-1 (0% SA), BSI-2 (50% SA), and BSI-3 (100% SA). Tests included compressive strength, slump flow, density, porosity, sorptivity, electrical resistivity, chloride penetration, and abrasion resistance, based on ASTM and SNI standards. The results show that BSI-3 (100% SA) had the highest compressive strength (50.40 MPa) and the lowest porosity and abrasion values, but failed to meet SCC criteria due to a slump flow below 550 mm. Conversely, BSI-2 met SCC specifications with a slump flow of 650 mm, showing the best chloride penetration resistance, while it maintained an adequate compressive strength of 44.38 MPa. It was concluded that an SCC mix with 50% SA and IS (BSI-2) is optimal for industrial building applications, particularly for floor slabs and supporting structures, as it balances strength, durability, and workability. Licensed under a CC-BY 4.0 license | Copyright (c) by the authors
Department of Civil Engineering, Politeknik Negeri Ujung, Makassar, Pandang, Indonesia; Civil Engineering Department, Faculty of Engineering, Hasanuddin University, Indonesia; Department of Civil Engineering, State Polytechnic of Malang, Malang, Indonesia; Department of Mechanical Engineering, Politeknik Negeri Ujung, Makassar, Pandang, Indonesia; Department of Electrical Engineering, State Polytechnic of Malang, Malang, Indonesia