Mechanical Properties of Electric Arc Furnace Slag Incorporated Brick Aggregate Concrete Md. Shafiqur Rahman and Syed Ishtiaq Ahmad 1 Introduction About four hundred small and big-scale steel industries in Bangladesh produce four million tonnes of steel annually to meet the demand of the construction industry. Although most of these steel mills use the old system of induction furnaces, a few modern large steel industries use electric arc furnaces. Electric Arc Furnace Slag (EAFS) is a common by-product of the fundamental oxidation process that these new mills generate in vast quantities. Much research is being conducted worldwide on the effective use of this EAFS as a replacement for natural (coarse and fine) aggregate in the making of concrete [1]. Crushed clay brick aggregate is extensively used as coarse aggregate in Bangladesh due to a lack of natural aggregate sources [2]. Using brick as coarse aggregate creates many mechanical and durability-related problems in concrete [3, 4]. Recently, researchers found that induction furnace slag can effectively substitute brick and recycled aggregate in concrete [5, 6]. Further, the use of EAFS as a partial replacement for recycled brick aggregate in concrete production demonstrated that the incorporation of EAFS increased compressive and tensile strength [7]. According to these findings, partially substituting brick aggre- gate (BA) with EAFS during the concrete production process can be an effective way to utilize EAFS. It will also reduce brick consumption and help to solve many of the environmental issues associated with brick production. The partial replace- ment of brick aggregate with EAFS could potentially reduce the inherent durability and mechanical weakness of brick aggregate concrete. This research looks at the mechanical properties of concrete that has EAFS partially substituted for BA, such as its flexural strength, compressive and tensile strengths, and modulus of elasticity (MoE). Md. S. Rahman · S. I. Ahmad (B) Department of Civil Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh e-mail: siahmad@ce.buet.ac.bd © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025 S. Kurwadkar et al. (eds.), Recent Developments in Sustainable Infrastructure, Lecture Notes in Civil Engineering 594, https://doi.org/10.1007/978-981-96-5043-9_26 275