Coupling effect of short-fiber kind and matrix strength on uniaxial tensile behavior of textile-reinforced high-ductility concrete (TRHDC)

IF 4.4 3区工程技术 Q1 ENGINEERING, CIVIL

Archives of Civil and Mechanical Engineering Pub Date : 2025-03-19 DOI:10.1007/s43452-025-01169-8

Zhiyan Wu, Mingke Deng, Zhengtao Qiu, Tong Li, Zhifang Dong

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Abstract

To improve the textile strength utilization and the tensile performance of textile-reinforced composite (TRC), high-ductility concrete (HDC) was employed as a substitute for conventional concrete, resulting in the development of textile-reinforced high-ductility concrete (TRHDC). This study investigated the tensile behavior of TRHDC produced with two short fibers and three matrices. The effects of matrix strength on TRHDC incorporating polyvinyl alcohol (PVA) and polyethylene (PE) fibers were compared in terms of crack pattern, tensile stress–strain curve, tensile strength, and strain energy. TRC specimens were fabricated to examine the differences in tensile behavior between TRC and TRHDC. Experimental results showed that TRHDC exhibited a preferred multiple-cracking pattern and better tensile performance compared to TRC. Short PE fibers were more pronounced in improving tensile behavior than PVA fibers. Matrix strength influenced the tensile behavior of TRHDC differently depending on whether PVA or PE fibers were added. For TRHDC incorporating short PVA fibers, tensile strength and strain energy decreased with matrix strength, whereas the opposite trend was observed for TRHDC incorporating PE fibers. Finally, calculation models for predicting the tensile strength of TRHDC incorporating PVA or PE fibers were established, considering the effects of textile reinforcing ratio and matrix strength.

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短纤维种类与基体强度对织物增强高延性混凝土单轴拉伸性能的耦合效应

为了提高纺织强度利用率和纺织增强复合材料（TRC）的抗拉性能，采用高延性混凝土（HDC）替代传统混凝土，从而发展了纺织增强高延性混凝土（TRHDC）。研究了由两种短纤维和三种基体制备的TRHDC的拉伸性能。比较了基体强度对聚乙烯醇（PVA）和聚乙烯（PE）纤维TRHDC的裂纹形态、拉伸应力-应变曲线、拉伸强度和应变能的影响。制作了TRC试件，考察了TRC和TRHDC在拉伸性能上的差异。实验结果表明，与TRC相比，TRHDC具有更优的多重裂纹模式和更好的拉伸性能。与PVA纤维相比，PE短纤维对拉伸性能的改善更为明显。基体强度对TRHDC拉伸性能的影响随PVA和PE纤维添加量的不同而不同。对于含有短PVA纤维的TRHDC，拉伸强度和应变能随基体强度而降低，而含有PE纤维的TRHDC则相反。最后，考虑织物补强率和基体强度的影响，建立了含PVA或PE纤维的TRHDC抗拉强度的计算模型。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Archives of Civil and Mechanical Engineering 工程技术-材料科学：综合

CiteScore

6.80

自引率

9.10%

发文量

201

审稿时长

4 months

期刊介绍： Archives of Civil and Mechanical Engineering (ACME) publishes both theoretical and experimental original research articles which explore or exploit new ideas and techniques in three main areas: structural engineering, mechanics of materials and materials science. The aim of the journal is to advance science related to structural engineering focusing on structures, machines and mechanical systems. The journal also promotes advancement in the area of mechanics of materials, by publishing most recent findings in elasticity, plasticity, rheology, fatigue and fracture mechanics. The third area the journal is concentrating on is materials science, with emphasis on metals, composites, etc., their structures and properties as well as methods of evaluation. In addition to research papers, the Editorial Board welcomes state-of-the-art reviews on specialized topics. All such articles have to be sent to the Editor-in-Chief before submission for pre-submission review process. Only articles approved by the Editor-in-Chief in pre-submission process can be submitted to the journal for further processing. Approval in pre-submission stage doesn''t guarantee acceptance for publication as all papers are subject to a regular referee procedure.