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Accumulative Strain of Sand-Containing Soft Soil Reinforced by Cement and Sodium Silicate under Traffic Loading

Author

Listed:
  • Lingshi An

    (Key Laboratory of Underground Engineering, Fujian Province University (Fujian University of Technology), Fuzhou 350118, China)

  • Junhao Chen

    (Key Laboratory of Underground Engineering, Fujian Province University (Fujian University of Technology), Fuzhou 350118, China)

  • Dongwei Li

    (School of Civil and Architecture Engineering, East China University of Technology, Nanchang 330013, China)

  • Peng Li

    (School of Civil and Architecture Engineering, East China University of Technology, Nanchang 330013, China)

  • Lei Guo

    (School of Civil and Architecture Engineering, East China University of Technology, Nanchang 330013, China)

  • Guanren Chen

    (School of Civil and Architecture Engineering, East China University of Technology, Nanchang 330013, China)

Abstract

The accumulative strain of sand-containing soft soil is crucial to the stability of the construction of embankment engineering such as expressways and high-speed railways. However, little attention has been devoted to the accumulative strain of sand-containing soft soil. In the current study, a series of cyclic triaxial tests were performed to investigate the accumulative strain of sand-containing soft soil reinforced by cement and sodium silicate under traffic loading. In addition, the accumulative strain model was proposed to describe the characteristic of accumulative strain. The results show that for the specimens with a high sand content (25%, 30%, and 35%), the accumulative strain increases obviously with the increase of the sand content. For the specimen with a cement content of 3%, the accumulative strain increases distinctly with the increasing loading time. The accumulative strain is strongly influenced by confining pressure. When the repeated cyclic stress amplitude is greater than 0.17 kN, the increase rate of accumulative strain is greater. The shorter the curing time is, the greater the accumulative strain is. The calculated results of the accumulative strain model show a good agreement with test data. Hence, the accumulative strain model can better describe the characteristic of accumulative strain.

Suggested Citation

  • Lingshi An & Junhao Chen & Dongwei Li & Peng Li & Lei Guo & Guanren Chen, 2022. "Accumulative Strain of Sand-Containing Soft Soil Reinforced by Cement and Sodium Silicate under Traffic Loading," Sustainability, MDPI, vol. 14(21), pages 1-14, October.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:21:p:14127-:d:957313
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    References listed on IDEAS

    as
    1. Hailong Liu & Jiuye Zhao & Yu Wang & Nangai Yi & Chunyi Cui, 2021. "Strength Performance and Microstructure of Calcium Sulfoaluminate Cement-Stabilized Soft Soil," Sustainability, MDPI, vol. 13(4), pages 1-10, February.
    2. Maitê Rocha Silveira & Paulo César Lodi & Natália de Souza Correia & Roger Augusto Rodrigues & Heraldo Luiz Giacheti, 2020. "Effect of Recycled Polyethylene Terephthalate Strips on the Mechanical Properties of Cement-Treated Lateritic Sandy Soil," Sustainability, MDPI, vol. 12(23), pages 1-19, November.
    3. Syed Taseer Abbas Jaffar & Malik Muneeb Abid & Sikander Zaman Khan & Turab Jafri & Zia Ur Rehman & Muhammad Atiq Ur Rehman Tariq & Anne W. M. Ng, 2022. "Evaluation of Conventional and Sustainable Modifiers to Improve the Stiffness Behavior of Weak Sub-Grade Soil," Sustainability, MDPI, vol. 14(5), pages 1-19, February.
    Full references (including those not matched with items on IDEAS)

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