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<p>Warm mix asphalt (WMA) technology allows significant reduction in mixing and compaction temperature, but it may modify binder rheology and rutting resistance in complex ways. This study evaluates the rutting performance of unmodified viscosity grade binder (VG 30), polymer modified binder (PMB 40), and crumb rubber modified binder (CRMB 60) modified with three WMA additives: zeolite-based (ZB, Advera<sup>®</sup>), chemical-based (CB, Rediset<sup>®</sup>), and wax-based (WB, Sasobit<sup>®</sup>) tested at service temperature of 64&#xa0;°C representative of typical Indian pavement condition and the elevated pavement temperature used for Performance Grade (PG)-type binder evaluation. Binder rutting susceptibility was evaluated using (i) the traditional Superpave parameter (G<sup>*</sup>/Sinδ), (ii) the performance-based Multiple Stress Creep Recovery (MSCR) parameters (J<sub>nr</sub>, %R) at 3.2&#xa0;kPa stress, and (iii) the mechanistic Burger’s viscoelastic parameters (viscous flow coefficient-b and elastic component-A). Unlike previous studies that consider these approaches separately, this work develops an integrated 3D correlation framework connecting Superpave, MSCR, and Burger’s parameters to examine the consistency of rutting trends across different binders, WMA additives, and dosages. Results show that WB additives provide the most significant improvement in rutting performance, with up to a 90% reduction in J<sub>nr</sub>, 60–70% reduction in b, and 3-4-fold increase in A, while ZB additives yield moderate enhancements and CB additives generally deteriorate rutting performance. Strong correlations (R²&gt;0.85) between G<sup>*</sup>/Sinδ, J<sub>nr</sub>, δ, b, and A demonstrate that traditional, performance-based, and mechanistic indicators provide coherent binder-level rankings of WMA-modified systems. The proposed framework thus offers a practical tool for screening binder-additive combinations for rut resistance at the binder level, while mixture and field-scale validation are identified as necessary future steps.</p>

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Rutting Characterization of Warm Mix Modified Binders Through Superpave, MSCR, and Burger’s Modeling Approaches

  • 期刊论文

  • 发表日期：

    2026年7月9日

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  • Aniket V. Kataware,
  • Maheshwari G. Bisanal,
  • Dharamveer Singh

摘要

Warm mix asphalt (WMA) technology allows significant reduction in mixing and compaction temperature, but it may modify binder rheology and rutting resistance in complex ways. This study evaluates the rutting performance of unmodified viscosity grade binder (VG 30), polymer modified binder (PMB 40), and crumb rubber modified binder (CRMB 60) modified with three WMA additives: zeolite-based (ZB, Advera®), chemical-based (CB, Rediset®), and wax-based (WB, Sasobit®) tested at service temperature of 64 °C representative of typical Indian pavement condition and the elevated pavement temperature used for Performance Grade (PG)-type binder evaluation. Binder rutting susceptibility was evaluated using (i) the traditional Superpave parameter (G*/Sinδ), (ii) the performance-based Multiple Stress Creep Recovery (MSCR) parameters (Jnr, %R) at 3.2 kPa stress, and (iii) the mechanistic Burger’s viscoelastic parameters (viscous flow coefficient-b and elastic component-A). Unlike previous studies that consider these approaches separately, this work develops an integrated 3D correlation framework connecting Superpave, MSCR, and Burger’s parameters to examine the consistency of rutting trends across different binders, WMA additives, and dosages. Results show that WB additives provide the most significant improvement in rutting performance, with up to a 90% reduction in Jnr, 60–70% reduction in b, and 3-4-fold increase in A, while ZB additives yield moderate enhancements and CB additives generally deteriorate rutting performance. Strong correlations (R²>0.85) between G*/Sinδ, Jnr, δ, b, and A demonstrate that traditional, performance-based, and mechanistic indicators provide coherent binder-level rankings of WMA-modified systems. The proposed framework thus offers a practical tool for screening binder-additive combinations for rut resistance at the binder level, while mixture and field-scale validation are identified as necessary future steps.