IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v16y2024i5p2084-d1350057.html
   My bibliography  Save this article

Effects of Multi-Walled Carbon Nanotubes and Recycled Fine Aggregates on the Multi-Generational Cycle Properties of Reactive Powder Concrete

Author

Listed:
  • Heng Wu

    (School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, China)

  • Xibin Liu

    (School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, China)

  • Xirui Ma

    (School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, China)

  • Guifeng Liu

    (School of Urban Construction, Changzhou University, Changzhou 213164, China)

Abstract

In order to investigate the effect of multi-walled carbon nanotubes (MWCNTs) on the recyclable properties of multi-generation recycled concrete, the physical properties of multi-generation recycled fine aggregate and the mechanical properties of multi-generation recycled concrete with different dosages of MWCNTs were tested, and the enhancement mechanism was analyzed by scanning electron microscopy (SEM). The results showed that the apparent density of multi-generation recycled fine aggregate with 0.05 wt% MWCNTs was increased by 1.04~2.03%, the crushing value was decreased by 38.21~49.45%, the compressive strength of the concrete prepared by it was increased by 11.11~18.96%, the splitting tensile strength was increased by 10~43.94%, the flexural strength was increased by 13.62~22.23%, and the mechanical properties were analyzed by scanning electron microscopy (SEM). Combined with the scanning electron microscope image analysis, the MWCNTs can fill the pores inside the specimen, bridge the cracks, and retard the decrease in concrete strength after multi-generation recycling.

Suggested Citation

  • Heng Wu & Xibin Liu & Xirui Ma & Guifeng Liu, 2024. "Effects of Multi-Walled Carbon Nanotubes and Recycled Fine Aggregates on the Multi-Generational Cycle Properties of Reactive Powder Concrete," Sustainability, MDPI, vol. 16(5), pages 1-17, March.
  • Handle: RePEc:gam:jsusta:v:16:y:2024:i:5:p:2084-:d:1350057
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/16/5/2084/pdf
    Download Restriction: no

    File URL: https://www.mdpi.com/2071-1050/16/5/2084/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Tam, Vivian W.Y. & Tam, C.M. & Le, K.N., 2007. "Removal of cement mortar remains from recycled aggregate using pre-soaking approaches," Resources, Conservation & Recycling, Elsevier, vol. 50(1), pages 82-101.
    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. Noushin Islam & Malindu Sandanayake & Shobha Muthukumaran & Dimuth Navaratna, 2024. "Review on Sustainable Construction and Demolition Waste Management—Challenges and Research Prospects," Sustainability, MDPI, vol. 16(8), pages 1-30, April.
    2. Anna M. Grabiec & Jeonghyun Kim & Andrzej Ubysz & Pilar Bilbao, 2021. "Some Remarks towards a Better Understanding of the Use of Concrete Recycled Aggregate: A Review," Sustainability, MDPI, vol. 13(23), pages 1-19, December.
    3. Haseog Kim & Sangki Park & Hayong Kim, 2016. "The Optimum Production Method for Quality Improvement of Recycled Aggregates Using Sulfuric Acid and the Abrasion Method," IJERPH, MDPI, vol. 13(8), pages 1-14, July.
    4. Daniele Kulisch & Amnon Katz & Semion Zhutovsky, 2022. "Quantification of Residual Unhydrated Cement Content in Cement Pastes as a Potential for Recovery," Sustainability, MDPI, vol. 15(1), pages 1-24, December.
    5. Tam, Vivian W.Y. & Le, Khoa N., 2007. "Aggregate testing using 2nd-, 7th- and 10th-order interpolation polynomials," Resources, Conservation & Recycling, Elsevier, vol. 52(1), pages 39-57.
    6. Aneeta Mary Joseph & Stijn Matthys & Nele De Belie, 2022. "Properties of Concrete with Recycled Aggregates Giving a Second Life to Municipal Solid Waste Incineration Bottom Ash Concrete," Sustainability, MDPI, vol. 14(8), pages 1-16, April.
    7. Wijayasundara, Mayuri & Mendis, Priyan & Zhang, Lihai & Sofi, Massoud, 2016. "Financial assessment of manufacturing recycled aggregate concrete in ready-mix concrete plants," Resources, Conservation & Recycling, Elsevier, vol. 109(C), pages 187-201.
    8. Lotfi, Somayeh & Deja, Jan & Rem, Peter & Mróz, Radosław & van Roekel, Eric & van der Stelt, Hans, 2014. "Mechanical recycling of EOL concrete into high-grade aggregates," Resources, Conservation & Recycling, Elsevier, vol. 87(C), pages 117-125.
    9. Ayman Abdo & Ayman El-Zohairy & Yasser Alashker & Mohamed Abd El-Aziz Badran & Sayed Ahmed, 2024. "Effect of Treated/Untreated Recycled Aggregate Concrete: Structural Behavior of RC Beams," Sustainability, MDPI, vol. 16(10), pages 1-28, May.
    10. Yuh-Shan Ho, 2019. "Comment on Chen, J.; Su, Y.; Si, H.; Chen, J. Managerial Areas of Construction and Demolition Waste: A Scientometric Review. Int. J. Environ. Res. Public Health 2018, 15 , 2350," IJERPH, MDPI, vol. 16(10), pages 1-4, May.
    11. Ting Wang & Kaiyi Li & Defu Liu & Yang Yang & Dong Wu, 2022. "Estimating the Carbon Emission of Construction Waste Recycling Using Grey Model and Life Cycle Assessment: A Case Study of Shanghai," IJERPH, MDPI, vol. 19(14), pages 1-16, July.

    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:5:p:2084-:d:1350057. 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.