应变硬化水泥基复合材料(SHCC)设计理论及力学性能研究进展

doi:10.19936/j.cnki.2096-8000.20230328.019

摘要/Abstract

摘要： 应变硬化水泥基复合材料(SHCC)克服了普通混凝土韧性差、裂缝宽度难以控制等缺点,在拉伸状态下呈现准应变硬化和多缝开裂特性,韧性和耐久性优异,应用前景广泛。我国针对SHCC的研究起步较晚,目前已开展了大量研究,取得了众多成果,但仍存在不少课题。本文首先对SHCC的性能定位、承载机制以及设计方法进行了阐释,重点说明了微观材料参数对SHCC材料宏观力学性能的显著影响;在此基础上重点聚焦SHCC的拉伸性能在我国的研究现状进行了综述,并对其他力学性能进行了简要概述,综述结果证明了上述设计理论在SHCC材料设计过程中的重要指导作用;最后总结了目前研究中存在的课题并对将来的发展进行了展望。希望本文能对SHCC的进一步深入研究和推广应用提供一定的借鉴作用。

关键词: 应变硬化水泥基复合材料, 性能定位, 承载机制, 材料设计方法, 研究现状

Abstract: Different from normal concrete, strain hardening cementitious composites (SHCC) exhibits pseudo strain hardening behavior and multiple cracking characteristics under uniaxial tension force. Due to its high toughness and small cracking width, SHCC has become one of the most promising civil engineering materials. SHCC has been extensively studied in China, and achieved fruitful results, but there are also many topics existing to be further explored. This paper firstly elucidated the performance specification, bearing mechanism and design approach of SHCC. Studies have shown that microscopic mechanical parameters of material has significant effects on the macroscopic mechanical performance of SHCC. Then focusing on tensile behavior and other mechanical properties, this paper reviewed the research progress of SHCC in China. The results of the review indicated that fiber has a significant improvement on SHCC and verified the importance of the above-mentioned design theory in the design and manufacture of SHCC. Finally, this paper pointed out the existing topics and the future research direction of SHCC. It is hoped that this paper will contribute to a deeper understanding and aid in the further research of SHCC.

Key words: strain-hardening cementitious composites, performance specification, bearing mechanism, design approach, research status

中图分类号:

TB332

冷赞, 薛昕. 应变硬化水泥基复合材料(SHCC)设计理论及力学性能研究进展[J]. 复合材料科学与工程, 2023, 0(3): 120-132.

LENG Zan, XUE Xin. A review on design theory and mechanical performance of strain hardening cementitious composites (SHCC)[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(3): 120-132.

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