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ORIGINAL RESEARCH article

Front. Mater.
Sec. Structural Materials
Volume 11 - 2024 | doi: 10.3389/fmats.2024.1445848
This article is part of the Research Topic FRP Composites for Civil Engineering: Strengthening and New Constructions View all 3 articles

Dynamic Properties of CO 2 -cured Foam Concrete at Different Loading Rates: Effect of the Foam Admixtures and Addition of Polypropylene Fiber

Provisionally accepted
Yunlin Liu Yunlin Liu 1ShangWei Huo ShangWei Huo 2JiaLi Fu JiaLi Fu 2Dong Guo Dong Guo 3*
  • 1 Anhui Jianzhu University, Hefei, Anhui Province, China
  • 2 College of Civil Engineering, Anhui Jianzhu University, Hefei, Anhui Province, China
  • 3 Hong Kong Polytechnic University, Kowloon, Hong Kong, SAR China

The final, formatted version of the article will be published soon.

    This paper investigated the dynamic mechanical properties of CO 2 -cured foam concrete under varying conditions, focusing on the effects of foam admixture and fiber reinforcement. The study tends to enrich the knowledge regarding the performance of CO 2 -cured foam concrete under different loading rates, especially in relation to density and matrix strength. The foam admixture of the specimens ranges from 26% to 55%, achieving density from 600 kg/m 3 to 1000 kg/m 3 . The specimens were loaded at strain rates from 80 s -1 to 398 s -1 . Experimental results revealed the dynamic elastic modulus, dynamic compressive strength, and Dynamic Increase Factor (DIF) showed a strong correlation with the foam admixture and density. In addition, the addition of polypropylene (PP) fibers improved compressive properties and toughness, increasing static compressive strength by 15%. This comprehensive analysis highlights the critical role of foam admixture and fiber reinforcement in determining the dynamic properties of CO 2 -cured foam concrete and provides valuable insights for optimizing the dynamic performance of foam concrete in various construction applications.

    Keywords: Foam concrete, CO 2 -curing, Polypropylene fiber, SHPB, Dynamic impact

    Received: 08 Jun 2024; Accepted: 17 Jun 2024.

    Copyright: © 2024 Liu, Huo, Fu and Guo. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Dong Guo, Hong Kong Polytechnic University, Kowloon, Hong Kong, SAR China

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