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<p>To investigate the fatigue life and its influencing factors of tire-derived geotechnical reinforcement material (TGRM) under two modes of cyclic tension, ring-shaped samples fabricated from tire model 225/65R17 were tested using the bisected tension method. The hysteresis curves, specific damping capacity, fatigue life, and endurance limit were analyzed. When the residual width of the zero-degree belt layer is small (10.7% of the complete width), the hysteresis loop is in a non-closed state and the proportion of damage strain under stress levels <i>σ</i>/<i>σ</i><sub>ref</sub> at 3, 5, 7, and 9 is 0, 15.47%, 24.83%, and 30.66%, respectively; and the residual width determines the shape of the hysteresis loop; wider TGRM enhances viscous energy dissipation to a limited extent. The fatigue failure process of TGRM consists of three stages: initial hardening, plateau, and rapid softening.The number of cycles corresponding to the unloading modulus ratio E<sub>i</sub>/E<sub>0</sub> = 0.85 is taken as the fatigue life of TGRM. TGRM width affects the endurance limit via the range of the edge high-stress zone and the zero-degree steel belt content (with the dominant factor varying with stress level). The results provide support for analyzing reinforcement-soil interaction under traffic load, predicting failure modes, and promoting the engineering application of TGRM.</p>

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Fatigue life of tire-derived geotechnical reinforcement materials: experimental investigation

  • 期刊论文

  • 发表日期：

    2026年5月18日

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  • Hanyu Zhao,
  • Fengchi Wang,
  • Dawei Wu

摘要

To investigate the fatigue life and its influencing factors of tire-derived geotechnical reinforcement material (TGRM) under two modes of cyclic tension, ring-shaped samples fabricated from tire model 225/65R17 were tested using the bisected tension method. The hysteresis curves, specific damping capacity, fatigue life, and endurance limit were analyzed. When the residual width of the zero-degree belt layer is small (10.7% of the complete width), the hysteresis loop is in a non-closed state and the proportion of damage strain under stress levels σ/σref at 3, 5, 7, and 9 is 0, 15.47%, 24.83%, and 30.66%, respectively; and the residual width determines the shape of the hysteresis loop; wider TGRM enhances viscous energy dissipation to a limited extent. The fatigue failure process of TGRM consists of three stages: initial hardening, plateau, and rapid softening.The number of cycles corresponding to the unloading modulus ratio Ei/E0 = 0.85 is taken as the fatigue life of TGRM. TGRM width affects the endurance limit via the range of the edge high-stress zone and the zero-degree steel belt content (with the dominant factor varying with stress level). The results provide support for analyzing reinforcement-soil interaction under traffic load, predicting failure modes, and promoting the engineering application of TGRM.