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Influence of Carbonization Process on the Mechanical Properties of Nano-MgO Modified Cement Soil

Author

Listed:
  • Wei Wang

    (School of Civil Engineering, Shaoxing University, Shaoxing 312000, China)

  • Hang Zhou

    (School of Civil Engineering, Shaoxing University, Shaoxing 312000, China)

  • Jian Li

    (School of Civil Engineering, Shaoxing University, Shaoxing 312000, China)

  • Feifei Tao

    (School of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing 312000, China)

  • Cuihong Li

    (School of Civil Engineering, Shaoxing University, Shaoxing 312000, China)

  • Biao Qian

    (Tongchuang Engineering Design Co. Ltd., Shaoxing 312000, China)

  • Ping Jiang

    (School of Civil Engineering, Shaoxing University, Shaoxing 312000, China)

Abstract

In order to explore the modification effect of carbonization time on nano-MgO-modified cement soil, unconfined compressive strength tests of nano-MgO-modified cement soil with carbonization times of 0 h, 6 h, 1 d, 2 d and 4 d were carried out. A method for normalizing the stress–strain curve was proposed, and the influence of nano-MgO content and carbonization time was investigated from the three aspects of compressive strength, peak strain and energy dissipation. The test results show the following: (1) The compressive strength of the modified cement soil can be significantly improved by adding 1.0% nano-MgO and after 1 d carbonization. (2) Under the same nano-MgO content, the peak strain of the modified cement soil after 2 d carbonization reaches the maximum, which can significantly increase its ductility. However, the nano-MgO content has little influence on the peak strain of the modified cement soil. (3) Under the same nano-MgO content, the energy dissipation rate of the modified cement soil after 1 d carbonization reaches the maximum, which can better resist the damage of external load.

Suggested Citation

  • Wei Wang & Hang Zhou & Jian Li & Feifei Tao & Cuihong Li & Biao Qian & Ping Jiang, 2021. "Influence of Carbonization Process on the Mechanical Properties of Nano-MgO Modified Cement Soil," Sustainability, MDPI, vol. 13(6), pages 1-19, March.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:6:p:3558-:d:522498
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    Cited by:

    1. Yeou-Fong Li & Walter Chen & Ta-Wui Cheng, 2022. "The Sustainable Composite Materials in Civil and Architectural Engineering," Sustainability, MDPI, vol. 14(4), pages 1-3, February.

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