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<p>To reduce carbon emissions from traditional construction materials, waste tires can be recycled as alternative building material. Tire-faced retaining walls provide innovative method to utilize scrap tires and reduce construction costs. However, modular tire-faced retaining walls often exhibit stability issues. To improve structural performance, reinforcement with geogrid strips and wrapped reinforcement is introduced to enhance overall stability. The mechanical behavior at the reinforcement-soil interface is critical factor influencing the stability of reinforced retaining walls. Based on a self-developed large-scale pullout apparatus, experimental investigations were conducted on the interface mechanical properties of three different reinforcement types: geogrid individual reinforced type, geogrid strip-reinforced tire type, and geogrid wrapped-reinforced tire type. The shear strength parameters of the geogrid-soil interface under three reinforcement types were obtained. Furthermore, considering the effects of pullout rate and geogrid thickness, numerical simulations with FLAC3D were performed to analyze the interface mechanical behavior. A comprehensive analysis was carried out on the interface characteristics and interaction mechanisms of the geogrid wrapped-reinforced tire type. Comparative studies of the three reinforcement types were conducted to evaluate their interface mechanical properties. The results demonstrate that the geogrid wrapped-reinforced tire type provides the most effective improvement in the mechanical performance of tire-faced retaining walls.</p>

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Pullout Mechanical Properties for Interfaces of Geogrid Reinforced Filled-Soil Tires Under Different Reinforced Types

  • 期刊论文

  • 发表日期：

    2026年1月13日

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  • Shuo Wang,
  • Liyan Wang,
  • Bin Ma,
  • Xiang Hu,
  • Rui Shen,
  • Ming Li

摘要

To reduce carbon emissions from traditional construction materials, waste tires can be recycled as alternative building material. Tire-faced retaining walls provide innovative method to utilize scrap tires and reduce construction costs. However, modular tire-faced retaining walls often exhibit stability issues. To improve structural performance, reinforcement with geogrid strips and wrapped reinforcement is introduced to enhance overall stability. The mechanical behavior at the reinforcement-soil interface is critical factor influencing the stability of reinforced retaining walls. Based on a self-developed large-scale pullout apparatus, experimental investigations were conducted on the interface mechanical properties of three different reinforcement types: geogrid individual reinforced type, geogrid strip-reinforced tire type, and geogrid wrapped-reinforced tire type. The shear strength parameters of the geogrid-soil interface under three reinforcement types were obtained. Furthermore, considering the effects of pullout rate and geogrid thickness, numerical simulations with FLAC3D were performed to analyze the interface mechanical behavior. A comprehensive analysis was carried out on the interface characteristics and interaction mechanisms of the geogrid wrapped-reinforced tire type. Comparative studies of the three reinforcement types were conducted to evaluate their interface mechanical properties. The results demonstrate that the geogrid wrapped-reinforced tire type provides the most effective improvement in the mechanical performance of tire-faced retaining walls.