IDEAS home Printed from https://ideas.repec.org/a/gam/jmathe/v10y2022i20p3841-d944974.html
   My bibliography  Save this article

Mechanical Properties and Strength Evolution Model of Sandstone Subjected to Freeze–Thaw Weathering Process: Considering the Confining Pressure Effect

Author

Listed:
  • Xin Xiong

    (School of Resources and Safety Engineering, Central South University, Changsha 410083, China
    Research Center for Mining Engineering and Technology in Cold Regions, Central South University, Changsha 410083, China)

  • Feng Gao

    (School of Resources and Safety Engineering, Central South University, Changsha 410083, China
    Research Center for Mining Engineering and Technology in Cold Regions, Central South University, Changsha 410083, China)

  • Keping Zhou

    (School of Resources and Safety Engineering, Central South University, Changsha 410083, China
    Research Center for Mining Engineering and Technology in Cold Regions, Central South University, Changsha 410083, China)

  • Chun Yang

    (School of Resources and Safety Engineering, Central South University, Changsha 410083, China
    Research Center for Mining Engineering and Technology in Cold Regions, Central South University, Changsha 410083, China)

  • Jielin Li

    (School of Resources and Safety Engineering, Central South University, Changsha 410083, China
    Research Center for Mining Engineering and Technology in Cold Regions, Central South University, Changsha 410083, China)

Abstract

Freeze-and-thaw (F&T) weathering cycles induced by day–night and seasonal temperature changes cause a large number of rock mass engineering disasters in cold areas. Investigating the impact of F&T weathering process on the strength and deformation characteristics of frozen–thawed rocks is therefore of critical scientific importance for evaluating the stability and optimizing the design of rock mass engineering in these areas. In this research, the evolution characteristics of F&T damage were analyzed based on T 2 spectrum distribution curves of sandstone specimens before and after F&T weathering cycles. The coupling impact of the quantity of F&T weathering cycles and confining pressure on pre-peak and post-peak deformation behaviors of sandstone specimens were analyzed in detail. By introducing the confining pressure increase factor (CPIF), the impact of confining pressure on the triaxial compressive strength (TCS) of sandstone specimens after undergoing different quantities of F&T weathering cycles was further investigated. A novel strength evolution model was proposed that could effectively describe the coupling impact of the quantity of F&T weathering cycles and confining pressure on TCS of rocks after undergoing the F&T weathering process. The proposed strength evolution model was cross-verified with experimental data from the published literature and all correlation coefficients were above 0.95, which proved that the strength evolution model proposed in this paper was reasonable; in addition, this model has strong applicability.

Suggested Citation

  • Xin Xiong & Feng Gao & Keping Zhou & Chun Yang & Jielin Li, 2022. "Mechanical Properties and Strength Evolution Model of Sandstone Subjected to Freeze–Thaw Weathering Process: Considering the Confining Pressure Effect," Mathematics, MDPI, vol. 10(20), pages 1-19, October.
    • Handle: RePEc:gam:jmathe:v:10:y:2022:i:20:p:3841-:d:944974
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2227-7390/10/20/3841/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2227-7390/10/20/3841/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Hailiang Jia & Wei Xiang & Michael Krautblatter, 2015. "Quantifying Rock Fatigue and Decreasing Compressive and Tensile Strength after Repeated Freeze‐Thaw Cycles," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 26(4), pages 368-377, October.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Linqi Huang & Shaofeng Wang & Xin Cai & Zhengyang Song, 2022. "Mathematical Problems in Rock Mechanics and Rock Engineering," Mathematics, MDPI, vol. 11(1), pages 1-3, December.

    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:jmathe:v:10:y:2022:i:20:p:3841-:d:944974. 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.