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<p>To investigate the interfacial characteristics between aeolian sand and geosynthetics for better application of aeolian sand in geosynthetic-reinforced soil structures, a series of monotonic and cyclic simple shear tests were conducted on aeolian sand–geotextile and aeolian sand–geogrid interfaces in this study. Their shear strength and deformation characteristics and interfacial contact mechanisms were analysed and compared. The results revealed that owing to differences in interfacial contact mechanisms, significant distinctions existed in the monotonic and cyclic shear characteristics between the aeolian sand–geotextile interface and the aeolian sand–geogrid interface. In monotonic shear tests, the aeolian sand–geotextile interface exhibited strain-softening characteristics accompanied by an obvious yield point, whereas the aeolian sand–geogrid interface exhibited strain-hardening characteristics without an obvious yield point. The primary energy dissipation mechanisms in the cyclic aeolian sand–geotextile and aeolian sand–geogrid interface tests were interface shearing and soil deformation, respectively. Furthermore, when adequately compacted, the shear strength of aeolian sand and its interfacial interaction with geosynthetics were adequate for reinforced soil application under static and dynamic conditions.</p>

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Simple Shear Test Study on the Monotonic and Cyclic Shear Properties of Aeolian Sand-Geosynthetic Interfaces

  • 期刊论文

  • 发表日期：

    2025年8月14日

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  • Kaifeng Zeng,
  • Fuyu Xiang,
  • Juntao Zhu,
  • Xuejun Liu,
  • Huabei Liu

摘要

To investigate the interfacial characteristics between aeolian sand and geosynthetics for better application of aeolian sand in geosynthetic-reinforced soil structures, a series of monotonic and cyclic simple shear tests were conducted on aeolian sand–geotextile and aeolian sand–geogrid interfaces in this study. Their shear strength and deformation characteristics and interfacial contact mechanisms were analysed and compared. The results revealed that owing to differences in interfacial contact mechanisms, significant distinctions existed in the monotonic and cyclic shear characteristics between the aeolian sand–geotextile interface and the aeolian sand–geogrid interface. In monotonic shear tests, the aeolian sand–geotextile interface exhibited strain-softening characteristics accompanied by an obvious yield point, whereas the aeolian sand–geogrid interface exhibited strain-hardening characteristics without an obvious yield point. The primary energy dissipation mechanisms in the cyclic aeolian sand–geotextile and aeolian sand–geogrid interface tests were interface shearing and soil deformation, respectively. Furthermore, when adequately compacted, the shear strength of aeolian sand and its interfacial interaction with geosynthetics were adequate for reinforced soil application under static and dynamic conditions.