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硅酸盐通报 ›› 2023, Vol. 42 ›› Issue (11): 4063-4071.

所属专题: 资源综合利用

• 资源综合利用 • 上一篇    下一篇

玄武岩橡胶混凝土基本力学性能及受压应力-应变曲线

姜天华1,2, 莫定聪1,2, 万聪聪1,2, 卢旭刚1,2, 李素珠3   

  1. 1.武汉科技大学城市建设学院,武汉 430065;
    2.武汉科技大学高性能工程结构研究院,武汉 430065;
    3.仙游县建工投资集团有限公司,莆田 351200
  • 收稿日期:2023-07-17 修订日期:2023-08-23 出版日期:2023-11-15 发布日期:2023-11-22
  • 通信作者: 莫定聪,硕士研究生。E-mail:836958411@qq.com
  • 作者简介:姜天华(1971—),男,博士,教授。主要从事高性能纤维增强聚合物复合材料及其结构的研究。E-mail:wustjth@163.com
  • 基金资助:
    福建省住建行业建设科技研究开发项目(2022-K-16,2022-K-18);湖北省住房与城乡建设厅科技计划项目(厅头【2023】1656号-159)

Basic Mechanical Properties and Compressive Stress-Strain Curves of Basalt Rubber Concrete

JIANG Tianhua1,2, MO Dingcong1,2, WAN Congcong1,2, LU Xugang1,2, LI Suzhu3   

  1. 1. School of Urban Construction, Wuhan University of Science and Technology, Wuhan 430065, China;
    2. Institute of High Performance Engineering Structure, Wuhan University of Science and Technology, Wuhan 430065, China;
    3. Xianyou County Construction Engineering Investment Group Co., Ltd., Putian 351200, China
  • Received:2023-07-17 Revised:2023-08-23 Online:2023-11-15 Published:2023-11-22

摘要: 为探究橡胶颗粒及玄武岩纤维交互耦合后对混凝土力学性能的影响,本文以橡胶体积掺量、玄武岩纤维体积掺量、玄武岩纤维长度作为三个主要因素,通过抗压强度、轴心抗压强度、劈裂抗拉强度及抗折强度试验研究三个因素对玄武岩橡胶混凝土的影响。结果表明:橡胶掺量的增加会降低混凝土的力学性能,但会改善混凝土的变形能力并降低脆性,玄武岩纤维的掺入可以改善混凝土各项力学强度,但掺量过多时,除抗拉强度外,其余强度均下降。综合分析得出当橡胶体积掺量为10%,玄武岩纤维体积掺量为0.10%,玄武岩纤维长度为18 mm时混凝土各项力学性能最优。基于受压应力-应变全曲线分析,提出玄武岩橡胶混凝土的受压应力-应变本构模型,为玄武岩橡胶混凝土构件的非线性分析和工程设计提供参考。

关键词: 玄武岩纤维, 橡胶, 基本力学性能, 受压应力-应变曲线, 本构模型

Abstract: In order to explore the influences of rubber particles and basalt fibers after interaction and coupling on the mechanical properties of concrete, considering the three main factors of rubber volume content, basalt fiber volume content and basalt fiber length, the influences of these factors on basalt rubber concrete were studied through compressive strength, axial compressive strength, splitting tensile strength and flexural strength tests. The results indicate that the increase of rubber content reduces the mechanical properties of concrete, but improves its deformation ability and reduces its brittleness. The addition of basalt fibers improves the mechanical strength of concrete, but when the content is too high, except for the tensile strength, all other strength decreases. Comprehensive analysis shows that when the rubber volume content is 10%, the basalt fiber volume content is 0.10% and the basalt fiber length is 18 mm, the mechanical properties of concrete are optimal. Based on the analysis of the compressive stress-strain curves, a compressive stress-strain constitutive model for basalt rubber concrete is proposed, which can be used as a reference for nonlinear analysis and engineering design of basalt rubber concrete components.

Key words: basalt fiber, rubber, basic mechanical property, compressive stress-strain curve, constitutive model

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