玄武岩纤维对3D打印混凝土层间黏结性能的影响

doi:10.16552/j.cnki.issn1001-1625.2024.1280

硅酸盐通报 ›› 2025, Vol. 44 ›› Issue (7): 2465-2473.DOI: 10.16552/j.cnki.issn1001-1625.2024.1280

玄武岩纤维对3D打印混凝土层间黏结性能的影响

裴强¹, 杨雨航¹, 钟颖竹¹, 祁鹏飞², 张禄玺¹

1.大连大学辽宁省复杂结构系统灾害预测与防治重点实验室,大连 116622;
2.中国地震局地球物理研究所,北京 100081

收稿日期:2024-10-28 修订日期:2024-12-19 出版日期:2025-07-15 发布日期:2025-07-24
通信作者: 祁鹏飞,博士研究生。E-mail:q291990@163.com
作者简介:裴强(1974—),男,博士,教授。主要从事3D打印混凝土及结构抗震方向的研究。E-mail:peiqiang@dlu.edu.cn
基金资助:
大连大学科研平台校内基金重点项目(202301ZD01);辽宁省高校复杂结构系统灾害预测与防治重点实验室开放基金(DLSZD2023011);大连市科技创新项目(2023JJ12GX012);辽宁省重点研发指导计划(2019JH8/10100091)

Effect of Basalt Fiber on Interlayer Bonding Properties of 3D Printed Concrete

PEI Qiang¹, YANG Yuhang¹, ZHONG Yingzhu¹, QI Pengfei², ZHANG Luxi¹

1. Key Laboratory for Prediction and Control on Complicated Structure System of the Education Department of Liaoning Province, Dalian University, Dalian 116622, China;
2. Institute of Geophysics, China Earthquake Administration, Beijing 100081, China

Received:2024-10-28 Revised:2024-12-19 Published:2025-07-15 Online:2025-07-24

摘要/Abstract

摘要： 本文对掺加玄武岩纤维的3D打印混凝土层间黏结性能进行研究,设计并打印了玄武岩纤维掺量分别为0%、0.3%、0.6%、0.9%、1.2%、1.5%(质量分数)的3D打印混凝土试件。通过流变性能、层间抗拉和层间抗剪试验,分析玄武岩纤维对3D打印混凝土宏观层间黏结性能的影响,并结合SEM和BET对掺加玄武岩纤维的3D打印混凝土的微观结构进行分析,讨论了微观结构对宏观层间黏结性能的影响。结果表明:相较于未掺玄武岩纤维的3D打印混凝土,掺加玄武岩纤维的3D打印混凝土的流变性能、层间抗拉强度和层间抗剪强度都得到提升;玄武岩纤维能够在水泥浆体中桥接裂缝,抑制界面区微裂缝的扩展,但玄武岩纤维掺量过高则会导致3D打印混凝土孔隙率增加,从而降低层间黏结性能;当玄武岩纤维掺量为0.6%时,3D打印混凝土的层间黏结性能显著提升,层间抗拉强度和层间抗剪强度分别达到3.51和6.26 MPa。

关键词: 玄武岩纤维, 3D打印混凝土, 纤维掺量, 层间黏结性能, 微观结构

Abstract: In this paper, the interlayer bonding properties of 3D printed concrete with basalt fiber were studied. The 3D printed concrete specimens with basalt fiber content of 0%, 0.3%, 0.6%, 0.9%, 1.2% and 1.5% (mass fraction) were designed and printed, respectively. The effects of basalt fiber on the macroscopic interlayer bonding properties of 3D printed concrete were analyzed by rheological properties, interlayer tensile and interlayer shear tests. The microstructure of 3D printed concrete with basalt fiber was analyzed by SEM and BET, and the influence of microstructure on the macroscopic interlayer bonding properties was discussed. The results show that compared with 3D printed concrete without basalt fiber, the rheological properties, interlayer tensile strength and interlayer shear strength of 3D printed concrete with basalt fiber are improved. The basalt fiber can bridge cracks in cement paste and inhibit the expansion of microcracks in the interface area. However, the high content of basalt fiber will lead to the increase of porosity of 3D printed concrete, thus reducing the interlayer bonding property. When the content of basalt fiber is 0.6%, the interlayer bonding property of 3D printed concrete is significantly improved, and its interlayer tensile strength and interlayer shear strength reach 3.51 MPa and 6.26 MPa, respectively.

Key words: basalt fiber, 3D printed concrete, fiber content, interlayer bonding property, microstructure

中图分类号:

TU528

裴强, 杨雨航, 钟颖竹, 祁鹏飞, 张禄玺. 玄武岩纤维对3D打印混凝土层间黏结性能的影响[J]. 硅酸盐通报, 2025, 44(7): 2465-2473.

PEI Qiang, YANG Yuhang, ZHONG Yingzhu, QI Pengfei, ZHANG Luxi. Effect of Basalt Fiber on Interlayer Bonding Properties of 3D Printed Concrete[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2025, 44(7): 2465-2473.

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玄武岩纤维对3D打印混凝土层间黏结性能的影响

Effect of Basalt Fiber on Interlayer Bonding Properties of 3D Printed Concrete

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