Effect of NaCl salinity on strength and stiffness of cement–fly ash–lime treated clayey soils

https://doi.org/10.31130/ud-jst.2026.24(7B).577E

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Author

  • Tran Van Khanh
    The University of Danang - University of Science and Technology, Vietnam; Tra Vinh University, Vietnam
    Do Huu Dao
    The University of Danang - University of Science and Technology, Vietnam
    Pham Van Ngoc
    The University of Danang - University of Science and Technology, Vietnam
    Le Dinh Viet
    The University of Danang - University of Science and Technology, Vietnam

Từ khóa:

Mekong Delta soil
fly Ash
cement
lime
unconfined compressive strength (UCS)
elastic modulus (E50)

Tóm tắt

Unconfined compressive strength (UCS) and elastic modulus (E₅₀) are key parameters governing the load-bearing capacity and deformation behavior of stabilized soft soils. This study investigated the effect of NaCl salinity on clayey soil stabilized with a cement–fly ash–lime binder system. Two experimental schemes were conducted. In Scheme 1, cement and fly ash contents were fixed at 20% and 30% of dry soil weight, respectively, while lime content varied from 2% to 6%. In Scheme 2, NaCl contents of 1–4% were introduced into the corresponding mixtures. Specimens were cured under standard conditions and tested by unconfined compression after 7, 14, 28, and 56 days. The results were used to evaluate the influence of NaCl salinity on UCS and E₅₀, providing an experimental basis for mixture design and performance assessment of stabilized soft soils in saline environments.

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Jul 31, 2026
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Khanh, T. V., D. H. Dao, P. V. Ngoc, và L. D. Viet. “Effect of NaCl Salinity on Strength and Stiffness of cement–fly ash–lime Treated Clayey Soils”. Tạp Chí Khoa học Và Công nghệ Đại học Đà Nẵng, vol 24, số p.h 7B, Tháng Bảy 2026, tr 36-42, doi:10.31130/ud-jst.2026.24(7B).577E.

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