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<p>Asphalt binders are susceptible to performance degradation under extreme temperatures, resulting in cracking at low temperatures and deformation at high temperatures. This study investigates the effect of natural nano zeolite (average particle size 316.4&#xa0;nm) as a binder modifier added at dosages of 0.1%, 0.2%, and 0.3% by weight of binder. Rheological properties were evaluated using dynamic shear rheometer tests under original, short-term aging (RTFOT), and long-term aging (PAVT) conditions. The results show that the incorporation of natural nano zeolite increased the complex shear modulus (G*) and reduced the phase angle (δ) under original and RTFOT conditions. At 60&#xa0;°C, the binder containing 0.3% zeolite exhibited increases in G* of up to 47% in the original state and 33% after RTFOT aging, accompanied by δ reductions of up to 12%, indicating a stiffer and more elastic response. These short-term improvements are consistent with the stiffening behavior typically associated with mineral fillers in asphalt binders. In contrast, PAVT-aged zeolite-modified binders exhibited lower G* values than the base asphalt, indicating that long-term aging alters the stiffening response observed at earlier aging stages. While the findings demonstrate the potential of natural nano zeolite to improve short-term rheological performance and high-temperature resistance, the absence of conventional filler benchmarking and moisture-related durability evaluation limits conclusions regarding long-term field performance. Further studies incorporating standard filler comparisons, moisture characterization, and durability assessment are required to support practical implementation.</p>

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Natural Nano Zeolite as an Asphalt Modifier: Short-Term and Long-Term Aging Effects on Rheological Properties

  • 期刊论文

  • 发表日期：

    2026年6月1日

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  • Eva Wahyu Indriyati,
  • Bambang Sugeng Subagio,
  • Harmein Rahman,
  • Sony Sulaksono Wibowo

摘要

Asphalt binders are susceptible to performance degradation under extreme temperatures, resulting in cracking at low temperatures and deformation at high temperatures. This study investigates the effect of natural nano zeolite (average particle size 316.4 nm) as a binder modifier added at dosages of 0.1%, 0.2%, and 0.3% by weight of binder. Rheological properties were evaluated using dynamic shear rheometer tests under original, short-term aging (RTFOT), and long-term aging (PAVT) conditions. The results show that the incorporation of natural nano zeolite increased the complex shear modulus (G*) and reduced the phase angle (δ) under original and RTFOT conditions. At 60 °C, the binder containing 0.3% zeolite exhibited increases in G* of up to 47% in the original state and 33% after RTFOT aging, accompanied by δ reductions of up to 12%, indicating a stiffer and more elastic response. These short-term improvements are consistent with the stiffening behavior typically associated with mineral fillers in asphalt binders. In contrast, PAVT-aged zeolite-modified binders exhibited lower G* values than the base asphalt, indicating that long-term aging alters the stiffening response observed at earlier aging stages. While the findings demonstrate the potential of natural nano zeolite to improve short-term rheological performance and high-temperature resistance, the absence of conventional filler benchmarking and moisture-related durability evaluation limits conclusions regarding long-term field performance. Further studies incorporating standard filler comparisons, moisture characterization, and durability assessment are required to support practical implementation.