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<p>Sugarcane bagasse, a waste generated by the sugarcane industry, and steel slag, a by-product of the steel industry, can cause significant environmental pollution when disposed of on open land. This novel study investigated the synergistic impact of steel slag and sugarcane bagasse fiber (SBF) on the performance properties of stone mastic asphalt (SMA). For this purpose, the steel slag and SBF were collected from the steel and sugarcane industries, respectively. After that, their surface morphology and physical properties were evaluated. Furthermore, SMA mixtures incorporating SBF with different fiber lengths (8&#xa0;mm, 10&#xa0;mm, 12&#xa0;mm) and coarse steel slag were prepared, and their performance in terms of rutting resistance, fatigue resistance, fracture resistance, cracking potential, and skid resistance was evaluated and compared with a control SMA produced using natural aggregates and cellulose fiber (CLF). The test results showed that asphalt mixtures incorporating steel slag and SBF exhibited higher fatigue, rutting, and cracking resistance compared to the conventional mixture. In addition, the modified mixtures demonstrated higher resilient modulus and skid resistance. Regarding the effect of fiber length, the SMA mixture containing 12&#xa0;mm SBF exhibited the best overall performance. Asphalt mixes incorporating 12&#xa0;mm SBF and steel slag aggregate exhibited 102% greater cracking resistance, 48% higher stiffness modulus, and 64% improved skid resistance compared to the conventional mix. This improvement is attributed to the rougher surface texture of steel slag and SBF, which enhances interparticle friction within the mixture. These findings suggest that the synergistic incorporation of steel slag and SBF in SMA mixtures can outperform conventional SMA mixtures.</p>

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Evaluation of performance characteristics of stone mastic asphalt incorporating steel slag and sugarcane bagasse fiber

  • 期刊论文

  • 发表日期：

    2026年6月22日

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  • Shuvrajit Biswas,
  • G. D. R. N. Ransinchung,
  • Sham S. Ravindranath

摘要

Sugarcane bagasse, a waste generated by the sugarcane industry, and steel slag, a by-product of the steel industry, can cause significant environmental pollution when disposed of on open land. This novel study investigated the synergistic impact of steel slag and sugarcane bagasse fiber (SBF) on the performance properties of stone mastic asphalt (SMA). For this purpose, the steel slag and SBF were collected from the steel and sugarcane industries, respectively. After that, their surface morphology and physical properties were evaluated. Furthermore, SMA mixtures incorporating SBF with different fiber lengths (8 mm, 10 mm, 12 mm) and coarse steel slag were prepared, and their performance in terms of rutting resistance, fatigue resistance, fracture resistance, cracking potential, and skid resistance was evaluated and compared with a control SMA produced using natural aggregates and cellulose fiber (CLF). The test results showed that asphalt mixtures incorporating steel slag and SBF exhibited higher fatigue, rutting, and cracking resistance compared to the conventional mixture. In addition, the modified mixtures demonstrated higher resilient modulus and skid resistance. Regarding the effect of fiber length, the SMA mixture containing 12 mm SBF exhibited the best overall performance. Asphalt mixes incorporating 12 mm SBF and steel slag aggregate exhibited 102% greater cracking resistance, 48% higher stiffness modulus, and 64% improved skid resistance compared to the conventional mix. This improvement is attributed to the rougher surface texture of steel slag and SBF, which enhances interparticle friction within the mixture. These findings suggest that the synergistic incorporation of steel slag and SBF in SMA mixtures can outperform conventional SMA mixtures.