Effects of Silt and Sepiolite Suspension on Static Liquefaction Potential of Clean Sand Under Undrained Monotonic Loading


Gürbüz S., AFACAN K. B.

Arabian Journal for Science and Engineering, 2025 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1007/s13369-025-10781-y
  • Dergi Adı: Arabian Journal for Science and Engineering
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Communication Abstracts, Metadex, Pollution Abstracts, zbMATH, Civil Engineering Abstracts
  • Anahtar Kelimeler: Loose sand, Pore pressure, Sepiolite, Silt, Static liquefaction, Triaxial compression
  • Eskişehir Osmangazi Üniversitesi Adresli: Evet

Özet

This study investigates the static liquefaction potential of clean sand, silty sand mixtures, and sepiolite suspensions through undrained static triaxial tests. The effects of relative density, confining pressure, and the addition of silt and sepiolite were systematically examined. A total of 22 isotropically consolidated tests were conducted under relative densities of 0, 10, and 20%, and confining pressures of 50, 100, and 150 kPa. The results show that clean sand alone did not exhibit complete static liquefaction; instead, its behavior shifted between dilative and contractive responses depending on confining pressure. The addition of non-plastic silt significantly increased liquefaction potential, with 12% silt content leading to complete liquefaction. Conversely, sepiolite suspension was found to effectively mitigate liquefaction risk, with the optimum content (7%) reducing excess pore pressure by nearly 50%. Increasing relative density also reduced the likelihood of liquefaction, as denser samples exhibited limited liquefaction or strain-hardening behavior. This research highlights the potential of sepiolite suspension as an environmentally friendly solution for mitigating liquefaction risks in silty sands. This innovative approach shows great promise in enhancing soil stability while promoting eco-conscious practices.