Effect of Steel Slag on Moisture Susceptibility of Asphalt Concrete Based on Tensile Strength Ratio

DOI

10.2991/978-94-6463-672-7_10How to use a DOI?

Keywords

Steel Slag; Moisture Damage; Tensile Strength Ratio; Freezing and Thawing; Asphalt Concrete

Abstract

Steel slag, a byproduct of steel production, can harm biodiversity and diminish soil fertility when improperly disposed of. However, studies suggest its viability as a pavement material. Given that moisture distress is a major issue in asphalt pavements, this study examines the impact of steel slag on the moisture susceptibility of asphalt concrete based on the Tensile Strength Ratio (TSR). Four Asphalt Concrete (AC) mix variations were prepared, incorporating three different slag proportions (10%, 20%, and 30% of total aggregate weight) alongside a control mix. All AC mixes were subjected to Marshall tests (for medium traffic) and Indirect Tensile Strength (ITS) tests in both dry and wet conditions, along with standard property tests on individual components. All the mentioned combinations met the acceptable standards for AIV, ACV, and water absorption. The optimum binder content (OBC) increased with increased slag due to its porosity, achieving the highest stability at 30% slag, which consistently improved with higher percentages. The unconditioned S20 (20% slag) specimen exhibited the highest ITS, demonstrating excellent resistance to fatigue, thermal cracking, and rutting. It also had the highest TSR at 0.89 while 0.85 for the control mix, indicating strong moisture damage resistance. Material cost savings were estimated 0.7% for S20 and 3.2% for S30 in comparison with control one. In conclusion, replacing 20% stone chips with steel slag can be recommended to enhance stability, boost resistance to fatigue, rutting, and moisture damage of AC mix, and to promote cost savings and effective waste disposal.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Mahiman Zinnurain
AU  - Md. Mizanur Rahman
AU  - Md. Shaharul Islam
AU  - Hridoy Hasan
PY  - 2025
DA  - 2025/04/04
TI  - Effect of Steel Slag on Moisture Susceptibility of Asphalt Concrete Based on Tensile Strength Ratio
BT  - Proceedings of the 1st International Conference on Recent Innovation in Civil Engineering and Architecture for Sustainable Development (IICASD-2024)
PB  - Atlantis Press
SP  - 104
EP  - 118
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-672-7_10
DO  - 10.2991/978-94-6463-672-7_10
ID  - Zinnurain2025
ER  -