IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v16y2024i17p7402-d1465580.html
   My bibliography  Save this article

Evaluation of Mechanical, Ecological, Economical, and Thermal Characteristics of Geopolymer Concrete Containing Processed Slag Sand

Author

Listed:
  • Girish M. G.

    (Department of Civil Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India)

  • Kiran K. Shetty

    (Department of Civil Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India)

  • Gopinatha Nayak

    (Department of Civil Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India)

  • Kiran Kamath

    (Department of Civil Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India)

Abstract

This manuscript highlights the mechanical, economical, ecological, and thermal investigations performed on paving quality geopolymer concrete (PQGC) incorporating processed steel slag (PSS) as a substitute for river sand (RSa). The replacement of RSa with PSS ranged from 0 to 100% in the PQGC mix. The mix with 100% PSS content exhibited enhanced geopolymerization, resulting in a denser and more amorphous matrix. This improved the mechanical properties, increasing compressive strength by 10.9%, flexural strength by 23.5%, and splitting tensile strength by 8.3%. The replacement of RSa with PSS in PQGC led to a marginal reduction in (embodied energy) EE and CO 2 emissions. However, compared to conventional Pavement Quality Concrete (PQC) and Fly Ash PQC (FPQC), the reduction in EE for PQGC was 44% and 34%, while the CO 2 emissions of PQGC were reduced by 1.22 and 1.49 times. Despite these benefits, PQGC with 100% PSS was 19% and 30% more expensive than PQC and FPQC, respectively. The Global Warming Potential (GWP) of PQGC was approximately one-third that of PQC and FPQC at all levels of replacement of RSa in PQGC when compared to PQC and FPQC. Additionally, thermal conductivity decreased from k = 0.67 W/m °C to k = 0.51 W/m °C with 100% replacement of RSa, keeping the concrete cooler. Therefore, PQGC with 100% PSS, when practically implemented, may help reduce surrounding temperatures. This study concludes that PSS is a feasible and reliable alternative to RSa, enhancing the sustainability of PQGC.

Suggested Citation

  • Girish M. G. & Kiran K. Shetty & Gopinatha Nayak & Kiran Kamath, 2024. "Evaluation of Mechanical, Ecological, Economical, and Thermal Characteristics of Geopolymer Concrete Containing Processed Slag Sand," Sustainability, MDPI, vol. 16(17), pages 1-21, August.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:17:p:7402-:d:1465580
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/16/17/7402/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2071-1050/16/17/7402/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Yunan Lu & Yinghong Qin & Chan Huang & Xijun Pang, 2023. "Albedo of Pervious Concrete and Its Implications for Mitigating Urban Heat Island," Sustainability, MDPI, vol. 15(10), pages 1-11, May.
    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.
    1. Xiao Zhi & Tao Yang & Xun Zhang & Yi Ren & Pin Deng & Yuliang Chen & Yuanjie Xiao, 2023. "Experimental Study on the Mechanical Properties and Permeability of Cement-Stabilized Permeable Recycle Aggregate Materials," Sustainability, MDPI, vol. 15(19), pages 1-17, September.

    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:17:p:7402-:d:1465580. 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.