IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v12y2020i14p5775-d386065.html
   My bibliography  Save this article

Construction and Demolition Waste (CDW) Recycling—As Both Binder and Aggregates—In Alkali-Activated Materials: A Novel Re-Use Concept

Author

Listed:
  • Rafael A. Robayo-Salazar

    (Composites Materials Group (CENM), Universidad de Valle, Calle 13 #100-00, Cali E44, Colombia)

  • William Valencia-Saavedra

    (Composites Materials Group (CENM), Universidad de Valle, Calle 13 #100-00, Cali E44, Colombia)

  • Ruby Mejía de Gutiérrez

    (Composites Materials Group (CENM), Universidad de Valle, Calle 13 #100-00, Cali E44, Colombia)

Abstract

This article demonstrates the possibility of producing alkali-activated materials (AAM) from a mixture of mechanically processed concrete, ceramic, masonry, and mortar wastes, as a sustainable alternative for recycling construction and demolition wastes (CDWs) under real conditions. The addition of 10% Portland cement allowed the materials to cure at room temperature (25 °C). CDW binder achieved a compressive strength of up to 43.9 MPa and it was classified as a general use and low heat of hydration cement according to ASTM C1157. The concrete produced with this cement and the crushed aggregates also from CDW reported a compressive strength of 33.9 MPa at 28 days of curing and it was possible to produce a high-class structural block with 26.1 MPa according to ASTM C90. These results are considered one option in making full use of CDWs as binder and aggregates, using alkaline activation technology thereby meeting the zero-waste objective within the concept of the circular economy.

Suggested Citation

  • Rafael A. Robayo-Salazar & William Valencia-Saavedra & Ruby Mejía de Gutiérrez, 2020. "Construction and Demolition Waste (CDW) Recycling—As Both Binder and Aggregates—In Alkali-Activated Materials: A Novel Re-Use Concept," Sustainability, MDPI, vol. 12(14), pages 1-18, July.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:14:p:5775-:d:386065
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/12/14/5775/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2071-1050/12/14/5775/
    Download Restriction: no
    ---><---

    Citations

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


    Cited by:

    1. Enrico Quagliarini & Marta Carosi & Stefano Lenci, 2023. "Novel Sustainable Masonry from Ancient Construction Techniques by Reusing Waste Modern Tiles," Sustainability, MDPI, vol. 15(6), pages 1-15, March.
    2. Arnas Majumder & Flavio Stochino & Andrea Frattolillo & Monica Valdes & Gianluca Gatto & Enzo Martinelli, 2024. "Sustainable Retrofitting Solutions: Evaluating the Performance of Jute Fiber Nets and Composite Mortar in Natural Fiber Textile Reinforced Mortars," Sustainability, MDPI, vol. 16(3), pages 1-18, January.
    3. Gigliola D’Angelo & Marina Fumo & Mercedes del Rio Merino & Ilaria Capasso & Assunta Campanile & Fabio Iucolano & Domenico Caputo & Barbara Liguori, 2021. "Crushed Bricks: Demolition Waste as a Sustainable Raw Material for Geopolymers," Sustainability, MDPI, vol. 13(14), pages 1-12, July.
    4. Hua Luo & José Aguiar & Xiaoqi Wan & Yinggu Wang & Sandra Cunha & Zhiyou Jia, 2024. "Application of Aggregates from Construction and Demolition Wastes in Concrete: Review," Sustainability, MDPI, vol. 16(10), pages 1-28, May.
    5. Rafael Robayo-Salazar & William Valencia-Saavedra & Ruby Mejía de Gutiérrez, 2022. "Reuse of Powders and Recycled Aggregates from Mixed Construction and Demolition Waste in Alkali-Activated Materials and Precast Concrete Units," Sustainability, MDPI, vol. 14(15), pages 1-24, August.

    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:12:y:2020:i:14:p:5775-:d:386065. 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.