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<p>Stone Matrix Asphalt (SMA) is characterized by its distinctive composition which comprises of dense, coarse aggregates and reinforced by a robust matrix of mineral filler, fiber, or polymer within an extensive asphalt binder layer. This formulation creates strong stone-to-stone bonds, resulting in a resilient load-bearing structure. As environmental concerns grow, there is a rising demand for sustainable alternatives from the agricultural sector. However, preparation of SMA mixes is expensive, especially in growing economies like India. Due to this, feasible economic approaches to prepare the mixes are being continually explored. This study aims to prepare SMA mixes using sugarcane bagasse while emphasizing feasibility and sustainability goals. The research involved preparing various SMA mixes, including conventional SMA, warm SMA, and Recycled Asphalt Pavement (RAP) Warm SMA, all incorporating sugarcane bagasse—a byproduct of sugarcane. The study investigated different binder contents: 6.3% for conventional SMA, 6.15% for warm SMA, and 6.25% for RAP Warm SMA. Key parameters such as drain-down behavior, static indirect tensile strength (ITS), and resilient modulus were evaluated through repeated fatigue load testing. The results showed that RAP Warm SMA followed Marshall properties and demonstrated an ITS of 0.33&#xa0;MPa (unconditional) and 0.30&#xa0;MPa (conditional), along with a Tensile Strength Ratio (TSR) of 0.91, indicating superior resistance to fatigue cracking and moisture damage. Furthermore, RAP Warm SMA also exhibited minimal drain-down value of 0.18%. This demonstrated the effectiveness of sugarcane bagasse as a stabilizing additive, ultimately establishing more conventional, feasible, and sustainable SMA mixes with enhanced performance.</p>

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Enhancing stone matrix asphalt performance using sugarcane bagasse as stabilizing agent

  • 期刊论文

  • 发表日期：

    2025年4月21日

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  • Shivaraj Halyal,
  • Vijay S. Angadi,
  • G Sharath

摘要

Stone Matrix Asphalt (SMA) is characterized by its distinctive composition which comprises of dense, coarse aggregates and reinforced by a robust matrix of mineral filler, fiber, or polymer within an extensive asphalt binder layer. This formulation creates strong stone-to-stone bonds, resulting in a resilient load-bearing structure. As environmental concerns grow, there is a rising demand for sustainable alternatives from the agricultural sector. However, preparation of SMA mixes is expensive, especially in growing economies like India. Due to this, feasible economic approaches to prepare the mixes are being continually explored. This study aims to prepare SMA mixes using sugarcane bagasse while emphasizing feasibility and sustainability goals. The research involved preparing various SMA mixes, including conventional SMA, warm SMA, and Recycled Asphalt Pavement (RAP) Warm SMA, all incorporating sugarcane bagasse—a byproduct of sugarcane. The study investigated different binder contents: 6.3% for conventional SMA, 6.15% for warm SMA, and 6.25% for RAP Warm SMA. Key parameters such as drain-down behavior, static indirect tensile strength (ITS), and resilient modulus were evaluated through repeated fatigue load testing. The results showed that RAP Warm SMA followed Marshall properties and demonstrated an ITS of 0.33 MPa (unconditional) and 0.30 MPa (conditional), along with a Tensile Strength Ratio (TSR) of 0.91, indicating superior resistance to fatigue cracking and moisture damage. Furthermore, RAP Warm SMA also exhibited minimal drain-down value of 0.18%. This demonstrated the effectiveness of sugarcane bagasse as a stabilizing additive, ultimately establishing more conventional, feasible, and sustainable SMA mixes with enhanced performance.