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<p>This study proposes a targeted mix design method for bamboo fiber-reinforced stone mastic asphalt (SMA) to achieve improved performance. Based on asphalt mastic theory and the Variable I method, shear and crack resistance are used as design indicators. The bamboo fiber SMA designed based on the mastic theory (SMA-Mastic) is compared with the bamboo fiber SMA designed using the traditional Marshall test method (SMA-Marshall). Various tests, including the rutting test, low-temperature beam bending test, water-immersion Marshall test, freeze–thaw splitting test, AMPT dynamic modulus test, and indirect tensile fatigue test, are conducted to assess the high- and low-temperature performance, water stability, viscoelastic properties, and fatigue durability of the SMA. The findings show that the asphalt–aggregate ratio of SMA-Mastic designed based on the mastic theory is 6.1%, involving 0.51% bamboo fiber content in the asphalt mixture. Compared to SMA-Marshall, the bamboo fiber content increases by 0.21% and the asphalt–aggregate ratio is reduced by 0.115%. Furthermore, SMA-Mastic demonstrates a 9.7% improvement in high-temperature stability, a 9% improvement in fatigue property, and enhancements in low-temperature crack resistance, water stability, and viscoelasticity compared with SMA-Marshall. These findings confirm that bamboo fiber SMA designed based on the mastic theory demonstrates superior road performance.</p>

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Design and Performance of Bamboo Fiber-Reinforced Stone Mastic Asphalt Mixture Based on Mastic Theory

  • 期刊论文

  • 发表日期：

    2026年4月6日

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  • Huimin Sun,
  • Dahui Xu,
  • Yingqiang Ma,
  • Qiuying Bing,
  • Fengjun Dong,
  • Yanping Sheng,
  • Kun Cao

摘要

This study proposes a targeted mix design method for bamboo fiber-reinforced stone mastic asphalt (SMA) to achieve improved performance. Based on asphalt mastic theory and the Variable I method, shear and crack resistance are used as design indicators. The bamboo fiber SMA designed based on the mastic theory (SMA-Mastic) is compared with the bamboo fiber SMA designed using the traditional Marshall test method (SMA-Marshall). Various tests, including the rutting test, low-temperature beam bending test, water-immersion Marshall test, freeze–thaw splitting test, AMPT dynamic modulus test, and indirect tensile fatigue test, are conducted to assess the high- and low-temperature performance, water stability, viscoelastic properties, and fatigue durability of the SMA. The findings show that the asphalt–aggregate ratio of SMA-Mastic designed based on the mastic theory is 6.1%, involving 0.51% bamboo fiber content in the asphalt mixture. Compared to SMA-Marshall, the bamboo fiber content increases by 0.21% and the asphalt–aggregate ratio is reduced by 0.115%. Furthermore, SMA-Mastic demonstrates a 9.7% improvement in high-temperature stability, a 9% improvement in fatigue property, and enhancements in low-temperature crack resistance, water stability, and viscoelasticity compared with SMA-Marshall. These findings confirm that bamboo fiber SMA designed based on the mastic theory demonstrates superior road performance.