IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v15y2023i7p5923-d1110445.html
   My bibliography  Save this article

Effect of Ultra-Fine Cement on the Strength and Microstructure of Humic Acid Containing Cemented Soil

Author

Listed:
  • Jing Cao

    (Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, China)

  • Fangyi Liu

    (Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, China)

  • Zhigang Song

    (Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, China)

  • Wenyun Ding

    (Kunming Survey, Design and Research Institute Co., Ltd. of CREEC, Kunming 650200, China)

  • Yongfa Guo

    (Kunming Survey, Design and Research Institute Co., Ltd. of CREEC, Kunming 650200, China)

  • Jianyun Li

    (Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, China)

  • Guoshou Liu

    (Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, China)

Abstract

The peat soil in the Dianchi Lake area of Yunnan, China, is widely distributed, bringing many problems to engineering. The peat soil foundation is usually treated by the cement mixing method, and the reinforcement effect of cemented soil is mainly affected by humic acid (HA). Ultra-fine cement (UFC) can improve cement performance and reduce cement consumption, decreasing CO 2 emissions and the impact of human activities on the environment. Simulated peat soils in different environments are prepared with HA reagent and cohesive soil, reinforced by composite cement curing agent mixed with ultrafine cement (UFC). The relationship among the UFC proportion, HA reagent content, soaking time, and sample strength was studied. The unconfined compressive strength test (UCS), scanning electron microscope (SEM), and PCAS microscopic quantitative test techniques were used to explore the mechanism of the effect of UFC on the strength of HA-containing cemented soil. The increasing UFC proportion in the composite cement curing agent gradually increased HA-containing cemented soil’s strength. UFC significantly reduced the percentage of macropores in HA-containing cemented soil and made the microstructure denser. The HA-containing cemented soil’s q u increased the most when the UFC proportion increased from 0% to 10%. The solidification effect of the composite cement curing agent mixed with UFC was always stronger than that of OPC. The composite cement curing agent with a UFC proportion of 10% is practical. Cement is still an important building material in the current construction industry, and UFC provides a new method for reducing environmental impact in engineering construction.

Suggested Citation

  • Jing Cao & Fangyi Liu & Zhigang Song & Wenyun Ding & Yongfa Guo & Jianyun Li & Guoshou Liu, 2023. "Effect of Ultra-Fine Cement on the Strength and Microstructure of Humic Acid Containing Cemented Soil," Sustainability, MDPI, vol. 15(7), pages 1-16, March.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:7:p:5923-:d:1110445
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/15/7/5923/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2071-1050/15/7/5923/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Jing Cao & Fangyi Liu & Siyang Huang & Hong Liu & Zhigang Song & Jianyun Li & Guoshou Liu, 2023. "Effect of UFC on the Microscopic Pore Structure of Cemented Soil in Humic Acid Environment," Sustainability, MDPI, vol. 15(4), pages 1-16, February.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.

      Corrections

      All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jsusta:v:15:y:2023:i:7:p:5923-:d:1110445. See general information about how to correct material in RePEc.

      If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

      If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

      If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

      For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

      Please note that corrections may take a couple of weeks to filter through the various RePEc services.

      IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.