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<p>Warm mix asphalt (WMA) offers a more sustainable option compared to conventional hot mix asphalt (HMA) by lowering production temperatures, cutting down energy use, and minimizing emissions. This research examines the effects of Sasobit (an organic additive) and Zycotherm (a chemical additive) on the performance characteristics of WMA mixtures. The experimental program included tests such as Tensile Strength Ratio (TSR), Indirect Tensile Strength (ITS), Dynamic Creep and Wheel Tracking Resilient Modulus (MR). Findings revealed that WMA mixtures incorporating 2.5% Sasobit had a 14.24% inferior rut depth than HMA, which can be attributed to the increased stiffness provided by Sasobit’s lattice structure. Zycotherm-treated samples at 0.1% dosage demonstrated a 20% increase in moisture resistance by ITS and TSR values suggesting enhanced durability against moisture-induced damage. Dynamic creep tests revealed that WMA-Sasobit mixtures accumulated less permanent strain over 1800 cycles compared to HMA, signifying better long-term deformation resistance. These findings underscore the potential of Sasobit and Zycotherm additives to enhance the durability of WMA, making it a robust alternative for sustainable road construction. Incorporating these additives can significantly improve pavement performance, lessen maintenance costs, and extend the existence of road surfaces.</p>

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Impact of Sasobit and Zycotherm additives on the performance of warm mix asphalt: enhancing rutting resistance and moisture durability

  • 期刊论文

  • 发表日期：

    2025年6月7日

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  • Prachi Kushwaha,
  • Lilesh Gautam,
  • Kul Vaibhav Sharma,
  • Avanish Singh Chauhan,
  • B. L. Swami

摘要

Warm mix asphalt (WMA) offers a more sustainable option compared to conventional hot mix asphalt (HMA) by lowering production temperatures, cutting down energy use, and minimizing emissions. This research examines the effects of Sasobit (an organic additive) and Zycotherm (a chemical additive) on the performance characteristics of WMA mixtures. The experimental program included tests such as Tensile Strength Ratio (TSR), Indirect Tensile Strength (ITS), Dynamic Creep and Wheel Tracking Resilient Modulus (MR). Findings revealed that WMA mixtures incorporating 2.5% Sasobit had a 14.24% inferior rut depth than HMA, which can be attributed to the increased stiffness provided by Sasobit’s lattice structure. Zycotherm-treated samples at 0.1% dosage demonstrated a 20% increase in moisture resistance by ITS and TSR values suggesting enhanced durability against moisture-induced damage. Dynamic creep tests revealed that WMA-Sasobit mixtures accumulated less permanent strain over 1800 cycles compared to HMA, signifying better long-term deformation resistance. These findings underscore the potential of Sasobit and Zycotherm additives to enhance the durability of WMA, making it a robust alternative for sustainable road construction. Incorporating these additives can significantly improve pavement performance, lessen maintenance costs, and extend the existence of road surfaces.