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Effect of the Slit on the Mechanical Tearing Behavior of High-Density Polyethylene and Polyester Geocell Strips

Author

Listed:
  • Zheng Zuo

    (CHN Energy Technology & Economics Research Institute, Beijing 102211, China)

  • Xiuqiang Hao

    (CHN Energy Technology & Economics Research Institute, Beijing 102211, China)

  • Huiqiang Li

    (CHN Energy Technology & Economics Research Institute, Beijing 102211, China)

  • Wei Wang

    (CHN Energy Technology & Economics Research Institute, Beijing 102211, China)

  • Guangqing Yang

    (School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, China)

  • Ying Liu

    (Research Institute of Highway, Ministry of Transport, Beijing 100088, China)

Abstract

Geocells are widely applied in numerous infrastructure constructions, like heavy-haul railways and ports. The mechanical tearing behavior of a geocell strip is crucial to the stability of the geocell-reinforced soil structures. At present, extensive studies have been conducted on the tensile characteristics of geocell strips, while limited research has been performed to investigate the post-damage mechanical tearing behavior of geocell strips. Meanwhile, there is also a lack of research on the comparison of performance of strips before and after damage. In this paper, a series of trapezoidal tearing tests were performed on high-density polyethylene (HDPE) and polyester (PET) geocell strips. The tearing test results and failure mode of trapezoidal specimens with a slit were investigated, and the effect of the slit on the strength and deformation characteristics of the specimen were discussed by introducing the “damage ratio of tearing force ( R TF )” and “damage ratio of tearing displacement ( R TD )”. In addition, the mechanical tearing behavior of HDPE and PET trapezoidal specimens was also compared. The test results indicated that the failure mode of HDPE and PET specimens subjected to tearing force was ductile and brittle failure. The strength and deformation characteristics of post-damage HDPE and PET trapezoidal specimens decreased. The slit had a significant impact on the tearing displacement of HDPE and PET specimens, especially the post-peak tearing displacement. The post-peak tearing displacement of HDPE was 10.99 times that of PET. The peak tearing force of the HDPE specimen without the slit was about 1.61 times that of specimen with the slit. Before local tearing, the peak tearing force of the PET specimen without the slit was about 3.27 times that of the specimen with the slit. The strength damage to the HDPE and PET geocell strips caused by the slit was 38.0%, and 69.46%. The impact of the slit on the tearing force of the PET specimen was greater than that of the HDPE, and was 1.82 times for the HDPE. This study can enhance our understanding of the mechanical tearing behavior of the geocell strip after damage and develop effective mitigation measures.

Suggested Citation

  • Zheng Zuo & Xiuqiang Hao & Huiqiang Li & Wei Wang & Guangqing Yang & Ying Liu, 2023. "Effect of the Slit on the Mechanical Tearing Behavior of High-Density Polyethylene and Polyester Geocell Strips," Sustainability, MDPI, vol. 15(18), pages 1-17, September.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:18:p:13593-:d:1237730
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    References listed on IDEAS

    as
    1. Zheng Zuo & Xiuqiang Hao & Huiqiang Li & Wei Wang & Guangqing Yang & Ying Liu, 2023. "Experimental Investigations on the Tensile Mechanical Behavior of HDPE Geocell Strip," Sustainability, MDPI, vol. 15(10), pages 1-16, May.
    2. Ahmet F. Esen & Peter K. Woodward & Omar Laghrouche & David P. Connolly, 2023. "Long-Term Performance Assessment of a Geosynthetic-Reinforced Railway Substructure," Sustainability, MDPI, vol. 15(12), pages 1-24, June.
    3. Gaofeng Song & Xiaoruan Song & Shiqin He & Dezhong Kong & Shuai Zhang, 2022. "Soil Reinforcement with Geocells and Vegetation for Ecological Mitigation of Shallow Slope Failure," Sustainability, MDPI, vol. 14(19), pages 1-12, September.
    4. Mohammadmahdi Abedi & Raul Fangueiro & António Gomes Correia & Javad Shayanfar, 2023. "Smart Geosynthetics and Prospects for Civil Infrastructure Monitoring: A Comprehensive and Critical Review," Sustainability, MDPI, vol. 15(12), pages 1-43, June.
    5. Bingbing Zhang & Fei Song & Weiguang Li, 2023. "Stability Analysis of Retaining Walls with Geocell-Reinforced Road Milling Materials," Sustainability, MDPI, vol. 15(5), pages 1-18, February.
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