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This study investigates at the influence of five Warm Mix Asphalt Chemical Additives (WMACAs)—Evotherm M1, Rediset RLQ1200, ZycoTherm, Fastac, and Ecogreen REJ—on the rheological and mechanical properties of asphalt mixtures, focusing on aging and aggregate interactions. Multiple Stress Creep Recovery (MSCR) and Linear Amplitude Sweep (LAS) were performed to assess deformation and fatigue resistance, while chemical oxidation was analyzed using Fourier Transform Infrared Spectroscopy (FTIR). Mechanical properties were examined through the Indirect Tensile Strength (ITS) test, Tensile Strength Ratio (TSR), and Hamburg Wheel Tracking Test (HWTT) on specimens compacted using Superpave gyratory compaction in accordance with AASHTO specifications. The results indicate that WMACAs do not significantly affect the asphalt binder itself. However, the type of aggregate plays a crucial role in performance. Nantou aggregates improved additive efficacy, resulting in enhanced tensile strength, rutting resistance, and durability, whereas Hualien aggregates were associated with reduced performance. Among the additives, ZycoTherm exhibited superior resistance to deformation, moisture, and aging, making it particularly suitable for high-stress applications. The study highlights the need for selecting effective WMACAs and compatible aggregates to optimize pavement durability.

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Effect of Chemical Additives to Warm Mix Asphalt with Reference to Rheological, Chemical, and Mechanical Properties

  • 会议论文

  • 发表日期：

    2025年

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  • Shih-Huang Chen,
  • Emil Adly,
  • Putri Adhitana Paramitha,
  • Meng-Hsin Kuo

摘要

This study investigates at the influence of five Warm Mix Asphalt Chemical Additives (WMACAs)—Evotherm M1, Rediset RLQ1200, ZycoTherm, Fastac, and Ecogreen REJ—on the rheological and mechanical properties of asphalt mixtures, focusing on aging and aggregate interactions. Multiple Stress Creep Recovery (MSCR) and Linear Amplitude Sweep (LAS) were performed to assess deformation and fatigue resistance, while chemical oxidation was analyzed using Fourier Transform Infrared Spectroscopy (FTIR). Mechanical properties were examined through the Indirect Tensile Strength (ITS) test, Tensile Strength Ratio (TSR), and Hamburg Wheel Tracking Test (HWTT) on specimens compacted using Superpave gyratory compaction in accordance with AASHTO specifications. The results indicate that WMACAs do not significantly affect the asphalt binder itself. However, the type of aggregate plays a crucial role in performance. Nantou aggregates improved additive efficacy, resulting in enhanced tensile strength, rutting resistance, and durability, whereas Hualien aggregates were associated with reduced performance. Among the additives, ZycoTherm exhibited superior resistance to deformation, moisture, and aging, making it particularly suitable for high-stress applications. The study highlights the need for selecting effective WMACAs and compatible aggregates to optimize pavement durability.