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ORIGINAL RESEARCH article

Front. Phys.
Sec. Interdisciplinary Physics
Volume 12 - 2024 | doi: 10.3389/fphy.2024.1466191
This article is part of the Research Topic Wave Propagation in Complex Environments, Volume II View all 6 articles

Study on the performance of pervious concrete under freeze-thaw cycle based on PFC3D

Provisionally accepted
Qidan Xiao Qidan Xiao 1*Bo Gao Bo Gao 1Hui Deng Hui Deng 1Jun Zhao Jun Zhao 2
  • 1 Xinyang Normal University, Xinyang, China
  • 2 Zhengzhou University, Zhengzhou, Henan Province, China

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

    Due to its unique porous structure, pervious concrete (PC) exhibits different freeze-thaw performance compared to conventional concrete. Therefore, studying its mechanical and durability properties under freeze-thaw conditions has become a pressing issue. A numerical model of pervious concrete was created using the discrete element method (DEM) based on actual aggregates to evaluate the impact of freeze-thaw cycles (FTCs) on the mechanical properties of pervious concrete. Pore water in the microstructure of the pervious concrete was defined using PFC3D software, simulating the freezing and expansion process of the pore water, while applying freeze-thaw loading to the pervious concrete. This study employs the parallel bonding model (PBM) in PFC3D software to account for the adhesion between material particles. The study modifies the linear ontological relationship of the parallel bonding model to present a linear curvilinear relationship. After FTCs, the loss of strength was reduced by 0.62%, 2.17%, 4.06%, and 5.87%, respectively, as well as the loss of mass by 0.66%, 0.89%, 1.21%, and 6.66%, respectively, compared to the control. The models were monitored for fracture location and uniaxial compressive damage using PFC3D software, and the attenuation constant of the freeze-thaw resistance of pervious concrete was examined in relation to varying porosity and initial uniaxial compressive strength (UCS). The results indicate that the decay constant increases with increasing porosity and modulus of elasticity while decreasing with increasing initial UCS.

    Keywords: Discrete Element Method, PFC3D, Parallel bond model, Freeze-thaw cycles, Reality modeling

    Received: 17 Jul 2024; Accepted: 02 Dec 2024.

    Copyright: © 2024 Xiao, Gao, Deng and Zhao. 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: Qidan Xiao, Xinyang Normal University, Xinyang, China

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.