高性能纤维增强水泥基复合材料在单轴压缩中的应变软化

IF 3.6 3区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

International Journal of Concrete Structures and Materials Pub Date : 2024-03-15 DOI:10.1186/s40069-023-00658-5

Seung-Hee Kwon, Jung-Soo Lee, Kyungtaek Koh, Hyeong-Ki Kim

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引用次数: 0

摘要

本研究探讨了高性能纤维增强水泥基复合材料（HPFRCC）在单轴压缩下的应变软化行为。制备了不同抗压强度（120 至 170 兆帕）的 HPFRCC 混合物。采用基于横向位移的加载速率反馈控制测量方法。绘制了应力-应变和应力-弹性位移曲线，并与文献结果进行了分析。结果发现，考虑到非弹性变形，HPFRCC 的峰值后能量吸收约为传统混凝土的 3-7 倍。根据实验结果，提出了不同长宽比的峰值后应力-应变/位移曲线拟合模型。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Strain Softening of High-Performance Fiber-Reinforced Cementitious Composites in Uniaxial Compression

查看原文本刊更多论文

Strain Softening of High-Performance Fiber-Reinforced Cementitious Composites in Uniaxial Compression

This study investigates the strain softening behavior of high-performance fiber-reinforced cementitious composites (HPFRCCs) under uniaxial compression. HPFRCC mixtures with different compressive strengths ranged from 120 to 170 MPa were prepared. The measurement method of feedback control on loading rate based transverse displacement was applied. Stress–strain and stress−inelastic displacement curves were plotted and analyzed with the results in the literature. It was found that the post-peak energy absorption of HPFRCC considering inelastic deformation was about 3–7 times higher than conventional concrete. Based on the experimental results in the present work, fitting models on post-peak stress–strain/−displacement curves were considering for different aspect ratios proposed.

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来源期刊

International Journal of Concrete Structures and Materials CONSTRUCTION & BUILDING TECHNOLOGY-ENGINEERING, CIVIL

CiteScore

6.30

自引率

5.90%

发文量

审稿时长

13 weeks

期刊介绍： The International Journal of Concrete Structures and Materials (IJCSM) provides a forum targeted for engineers and scientists around the globe to present and discuss various topics related to concrete, concrete structures and other applied materials incorporating cement cementitious binder, and polymer or fiber in conjunction with concrete. These forums give participants an opportunity to contribute their knowledge for the advancement of society. Topics include, but are not limited to, research results on Properties and performance of concrete and concrete structures Advanced and improved experimental techniques Latest modelling methods Possible improvement and enhancement of concrete properties Structural and microstructural characterization Concrete applications Fiber reinforced concrete technology Concrete waste management.