ORIGINAL RESEARCH article
Front. Mater.
Sec. Structural Materials
Volume 12 - 2025 | doi: 10.3389/fmats.2025.1648818
This article is part of the Research TopicSustainable and Green Materials in Geotechnical EngineeringView all 9 articles
Pore size characteristics of needle-punched nonwoven geotextiles under laterally constrained condition
Provisionally accepted
- 1Zhejiang Guangchuan Engineering Consultation, Hangzhou, China
- 2Zhejiang University, Hangzhou, China
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The effects of lateral constrained uniaxial tensile stainstrain on the tensile behavior of needle-punched nonwoven geotextiles were investigated. Tests were conducted on geotextile specimens using a clamping device that imposed lateral constrained strains.A clamping device allowed tests to be carried out on geotextile specimens subjected to lateral constrained strains. The pore size characteristics of geotextiles were obtained using bubble point method (BBP) test. An extended pore size distribution (PSD) model for nonwoven geotextile subjected to lateral constrained uniaxial strain condition was proposed. A finite element method (FEM) model of the geotextile was established to model the tensile behavior of geotextiles under later constrained tensile strains. The experimental results obtained by the BBP tests were analyzed, and the theoretical and simulated values were compared with the BBP-based values. It is showed that the PSD curves of geotextiles shifted towards larger sizes under tensile strain, with insignificant shape changes. The five characteristic pore sizes (O95, O80, O50, O30, O10) exhibited a consistent increasing trend. The theoretical and simulated PSD curves for geotextiles steadily shifted towards larger sizes, maintaining consistent shapes as tensile strain increased. Both the theoretical and FEM models accurately predicted the variations in the experimental O95. For the theoretical model, the correlation coefficients were 0.90 and 0.9962 respectively; for the FEM model, the correlation coefficients were 0.9481 and 0.9866 respectively.
Keywords: Geosynthetics, Nonwoven geotextiles, Pore size characteristics, Lateral constrained Uniaxial tensile, Numerical modeling
Received: 17 Jun 2025; Accepted: 07 Jul 2025.
Copyright: © 2025 Chen, Xia, Li, Qiu, Chen and Tang. 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: Xiaowu Tang, Zhejiang University, Hangzhou, China
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