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<p>Acoustic emission (AE) characteristic parameters can provide comparative analysis and insights into freeze-thaw (F-T) damage progression in asphalt mixtures. In this study, the F-T damage resistance of asphalt mixture is analyzed based on the splitting mechanical parameters and AE characteristic parameters. The <i>b</i><sub>AE</sub> can be used to characterize the characteristics of asphalt mixture during the entire splitting process before and after F-T cycles. Compared with the asphalt mixture before F-T cycles, the propagation of micro-cracks inside asphalt mixture after F-T cycles is more stable and lasts longer. The historical index (<i>HI</i>) can be used as an important index to measure the water damage resistance of asphalt mixture. The feature key points A, A’, and C can be used as a marker for the initial generation of macro-cracks, a node for the transition from micro-cracks to macro-cracks, and a predictive index for the splitting tensile strength limit inside asphalt mixture.</p>

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Research on the Freeze-Thaw Damage Resistance Performance of Asphalt Mixture Based on Acoustic Emission Characteristic Parameters

  • 期刊论文

  • 发表日期：

    2026年5月6日

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  • Jianfeng Li,
  • Linbing Wang,
  • Shibing Han,
  • Dongdong Zhou,
  • Songqiao Yang,
  • Fan Li,
  • Yanxiao Mu,
  • Ningyi Su,
  • Qian Li,
  • Wei Duan

摘要

Acoustic emission (AE) characteristic parameters can provide comparative analysis and insights into freeze-thaw (F-T) damage progression in asphalt mixtures. In this study, the F-T damage resistance of asphalt mixture is analyzed based on the splitting mechanical parameters and AE characteristic parameters. The bAE can be used to characterize the characteristics of asphalt mixture during the entire splitting process before and after F-T cycles. Compared with the asphalt mixture before F-T cycles, the propagation of micro-cracks inside asphalt mixture after F-T cycles is more stable and lasts longer. The historical index (HI) can be used as an important index to measure the water damage resistance of asphalt mixture. The feature key points A, A’, and C can be used as a marker for the initial generation of macro-cracks, a node for the transition from micro-cracks to macro-cracks, and a predictive index for the splitting tensile strength limit inside asphalt mixture.