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硅酸盐通报 ›› 2026, Vol. 45 ›› Issue (8): 2583-2599.DOI: 10.16552/j.cnki.issn1001-1625.2026.0115

• 水泥混凝土 •    下一篇

3D打印混凝土层间界面粘结强度研究进展

贺智敏1(), 陈信策1(), 卢博文1, 张桂新1, 柳俊哲2   

  1. 1.宁波大学土木工程与未来城市学院,宁波 315211
    2.青岛农业大学建筑工程学院,青岛 266109
  • 收稿日期:2026-02-02 修订日期:2026-03-30 出版日期:2026-08-15 发布日期:2026-09-01
  • 通信作者: 陈信策,硕士研究生。E-mail:1799604490@qq.com
  • 作者简介:贺智敏(1973—),男,博士,副教授。主要从事3D打印混凝土方面的研究。E-mail:hezhimin@nbu.edu.cn
  • 基金资助:
    国家自然科学基金(42477152);宁波天河生态科技股份有限公司委托项目(HX2025000813)

Research Progress on Interlayer Bond Strength of 3D Printed Concrete

HE Zhimin1(), CHEN Xince1(), LU Bowen1, ZHANG Guixin1, LIU Junzhe2   

  1. 1.School of Civil Engineering and Future Cities,Ningbo University,Ningbo 315211,China
    2.Collage of Civil Engineering & Agricultural,Qingdao Agricultural University,Qingdao 266109,China
  • Received:2026-02-02 Revised:2026-03-30 Published:2026-08-15 Online:2026-09-01

摘要:

挤出式3D打印混凝土(3DPC)因逐层堆叠的成型工艺,层间粘结强度成为影响结构整体性能的关键因素。本文系统综述了3DPC层间粘结强度的最新研究进展。首先,从材料层面分析了胶凝材料配合比、骨料、外加剂、纤维及纳米材料等对界面性能的调控机制;其次,从工艺层面探讨了打印参数、养护温湿度等因素的作用规律,并归纳了化学粘结剂喷涂与物理增强技术的强化效果。此外,深入对比层间直接拉伸、劈裂抗拉及剪切等宏观力学测试方法的适用性与局限性,结合最新发布的行业标准进行评述,并综述了扫描电子显微镜、纳米压痕等微观测试手段和无损检测技术在界面粘结机理研究中的应用。最后,指出了当前研究在多因素耦合作用及长期耐久性方面的不足,并对未来提升层间粘结性能的研究方向进行了展望。

关键词: 3D打印, 混凝土, 层间界面, 粘结强度, 测试方法, 微观机理

Abstract:

In extrusion-based 3D printed concrete (3DPC), due to the layer-by-layer stacking process, interlayer bond strength is a key factor affecting the overall structural performance.This paper systematically reviews the latest research progress on the interlayer bond strength of 3DPC. Firstly, from a materials perspective, the regulatory mechanisms of cementitious material mix proportion, aggregates, admixtures, fibers, and nanomaterials on interfacial performance are analyzed. Secondly, from a processing standpoint, the influence patterns of printing parameters and curing temperature and humidity, and other factors are discussed, and the strengthening effects of chemical bonding agent spraying and physical enhancement techniques are summarized. Furthermore, the applicability and limitations of macroscopic mechanical testing methods—such as interlayer direct tensile, splitting tensile, and shear tests—are critically compared. These methods are reviewed in conjunction with recently released industry standards. The application of microscopic characterization techniques, including scanning electron microscopy and nanoindentation, as well as non-destructive testing methods, in studying interfacial bonding mechanisms is also reviewed. Finally, the paper identifies current research gaps, particularly regarding the coupled effects of multiple factors and long-term durability, and proposes future research directions for enhancing interlayer bond performance.

Key words: 3D printing, concrete, interlayer interface, bond strength, test method, microscopic mechanism

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