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Assessing the Effects of Libyan Iron Slag on Self-Compacting Concrete Characteristics

Authors

  • Nurdeen Mohamed Altwair Department of Civil Engineering, Faculty of Engineering, Elmergib University, Khoms, Libya
  • Ali Gomaa Abuzgaia Department of Civil Engineering, Faculty of Engineering, Elmergib University, Khoms, Libya
  • Abdualhamid Mohamed Alsharif Department of Civil Engineering, Faculty of Engineering, Elmergib University, Khoms, Libya
  • Lamen Saleh Sryh Department of Civil Engineering, Faculty of Engineering, Elmergib University, Khoms, Libya
  • Saleh Elmahdi Ali Abdulsalam Department of Civil Engineering, Faculty of Engineering, Elmergib University, Khoms, Libya
  • Khalid Ashur Swalem Civil Engineering Department, Faculty of Engineering, Gulf of Sidra University, Ben Jawwad, Libya
Volume: 15 | Issue: 1 | Pages: 19589-19595 | February 2025 | https://doi.org/10.48084/etasr.9337

Received: 19 October 2024 | Revised: 10 November 2024 | Accepted: 21 November 2024 | Online: 8 December 2024


Corresponding author: Nurdeen Mohamed Altwair

Abstract

The current study addresses the growing environmental issue of waste from blast high furnaces, particularly iron and steel plants in Libya. It investigates the fresh and mechanical properties of Self-Compacting Concrete (SCC) by substituting conventional aggregate with slag aggregate. The fresh properties of SCC were assessed using slump flow diameter, T50 flow time, J-ring, and L-box tests. Its mechanical properties were also evaluated, including compressive strength, flexural strength, splitting tensile strength, and Ultrasonic Pulse Velocity (UPV). Various replacement ratios were tested, 30%, 60%, and 100% for coarse aggregate, 10%, 20%, and 30% for fine aggregate, and combinations of coarse and fine aggregate at specified ratios. The results indicated that higher slag powder content slightly increased the setting times. The coarse slag aggregate proportions negatively impacted the filling ability, while fine aggregate proportions enhanced it. The passing ability decreased when 60% of coarse slag was used as a replacement, but it improved with a 100% coarse slag replacement. Interestingly, replacing 60% of coarse aggregate with slag enhanced compressive strength. Meanwhile, the best flexural and splitting tensile strengths were observed with 20%-30% replacements of both coarse and fine aggregates with slag. All slag aggregate mixtures were classified as of excellent quality based on UPV assessments, highlighting their potential as sustainable construction materials.

Keywords:

slag aggregate, self-compacting concrete, flowability, mechanical properties

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How to Cite

[1]
Altwair, N.M., Abuzgaia, A.G., Alsharif, A.M., Sryh, L.S., Abdulsalam, S.E.A. and Swalem, K.A. 2025. Assessing the Effects of Libyan Iron Slag on Self-Compacting Concrete Characteristics. Engineering, Technology & Applied Science Research. 15, 1 (Feb. 2025), 19589–19595. DOI:https://doi.org/10.48084/etasr.9337.

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Copyright (c) 2024 Nurdeen Mohamed Altwair, Ali Gomaa Abuzgaia, Abdualhamid Mohamed Alsharif, Lamen Saleh Sryh, Saleh Elmahdi Ali Abdulsalam, Khalid Ashur Swalem

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