IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v16y2024i24p11168-d1547962.html
   My bibliography  Save this article

Sustainable Cementitious Materials: Strength and Microstructural Characteristics of Calcium Carbide Residue-Activated Ground Granulated Blast Furnace Slag–Fly Ash Composites

Author

Listed:
  • Xing Liu

    (Guangxi Key Laboratory of Geomechanics and Geotechnical Engineering, Guilin University of Technology, Guilin 541004, China
    Guangxi Key Laboratory of Green Building Materials and Construction Industrialization, Guilin University of Technology, Guilin 541004, China)

  • Guiyuan Xiao

    (Guangxi Key Laboratory of Geomechanics and Geotechnical Engineering, Guilin University of Technology, Guilin 541004, China
    Guangxi Key Laboratory of Green Building Materials and Construction Industrialization, Guilin University of Technology, Guilin 541004, China)

  • Dunhan Yang

    (Guangxi Key Laboratory of Geomechanics and Geotechnical Engineering, Guilin University of Technology, Guilin 541004, China
    Guangxi Key Laboratory of Green Building Materials and Construction Industrialization, Guilin University of Technology, Guilin 541004, China)

  • Lin Dai

    (Guangxi Key Laboratory of Geomechanics and Geotechnical Engineering, Guilin University of Technology, Guilin 541004, China
    Guangxi Key Laboratory of Green Building Materials and Construction Industrialization, Guilin University of Technology, Guilin 541004, China)

  • Aiwei Tang

    (Guangxi Key Laboratory of Geomechanics and Geotechnical Engineering, Guilin University of Technology, Guilin 541004, China
    Guangxi Key Laboratory of Green Building Materials and Construction Industrialization, Guilin University of Technology, Guilin 541004, China)

Abstract

This study developed a sustainable low-carbon cementitious material using calcium carbide residue (CCR) as an alkali activator, combined with ground granulated blast furnace slag (GGBS) and fly ash (FA) to form a composite. The objective was to optimize the CCR dosage and the GGBS-to-FA ratio to enhance the unconfined compressive strength (UCS) of the composite, providing a viable alternative to traditional Portland cement while promoting solid waste recycling. Experiments were conducted with a water-to-binder ratio of 0.55, using six GGBS-to-FA ratios (0:10, 2:8, 4:6, 6:4, 8:2, and 10:0) and CCR contents ranging from 2% to 12%. Results indicated optimal performance at a GGBS-to-FA ratio of 8:2 and an 8% CCR dosage, achieving a peak UCS of 18.04 MPa at 28 days, with 79.88% of this strength reached within just 3 days. pH testing showed that with 8% CCR, pH gradually decreased over the curing period but increased with higher GGBS content, indicating enhanced reactivity. Microstructural analyses (XRD and SEM-EDS) confirmed the formation of hydration products like C-(A)-S-H, significantly improving density and strength. This study shows CCR’s potential as an effective and environmentally friendly activator, advancing low-carbon building materials and resource recycling in construction.

Suggested Citation

  • Xing Liu & Guiyuan Xiao & Dunhan Yang & Lin Dai & Aiwei Tang, 2024. "Sustainable Cementitious Materials: Strength and Microstructural Characteristics of Calcium Carbide Residue-Activated Ground Granulated Blast Furnace Slag–Fly Ash Composites," Sustainability, MDPI, vol. 16(24), pages 1-19, December.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:24:p:11168-:d:1547962
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/16/24/11168/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2071-1050/16/24/11168/
    Download Restriction: no
    ---><---

    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:16:y:2024:i:24:p:11168-:d:1547962. 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.

    We have no bibliographic references for this item. You can help adding them by using 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.