3D打印混凝土相关性能研究进展_《混凝土与水泥制品》杂志社

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发布时间：2020-01-06 00:00:00

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3D打印混凝土相关性能研究进展

Research Progress on the Properties of 3D Printed Concrete

2020年第9期

3D打印混凝土；流动性；黏结强度；凝结时间；纤维增强

3D printed concrete; Fluidity; Bond strength; Setting time; Fiber reinforcement

2020年第9期

10.19761/j.1000-4637.2020.09.005.06

段严，秦先涛

武汉轻工大学土木工程与建筑学院，湖北武汉430023

段严，秦先涛

段严,秦先涛.3D打印混凝土相关性能研究进展[J].混凝土与水泥制品,2020(9):5-10.

DUAN Y,QIN X T.Research Progress on the Properties of 3D Printed Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(9):5-10.

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1000

摘要：从流动性、黏结强度、凝结时间、纤维增强等方面概括了目前3D打印混凝土的研究进展，分析了外加剂、骨料级配和特殊材料应用于改善3D打印混凝土流动性的现状；总结了3D打印混凝土层间黏结强度的不足及改善措施；从外加剂和水泥的选择上探讨了3D打印混凝土凝结时间的控制方案，分析了纤维用于3D打印混凝土中的优势以及特殊性；结合现状对3D打印混凝土未来研究方向进行了展望。 Abstract: The research progress of 3D printed concrete (3DPC) from fluidity, bond strength, setting time and fiber reinforcement is summarized. Specifically, the fluidity of 3DPC is analyzed based on the additive, gradation and special materials. While the weaknesses of bond strength of 3DPC and improvement measures are summarized. Then, the control scheme for the setting time is researched from the point of additive and cement. Meanwhile, the advantage and particularity of the use of fiber in 3DPC are analyzed. At last, the future research directions of 3DPC are proposed for promoting the development of 3DPC.

英文名 : Research Progress on the Properties of 3D Printed Concrete

刊期 : 2020年第9期

关键词 : 3D打印混凝土；流动性；黏结强度；凝结时间；纤维增强

Key words : 3D printed concrete; Fluidity; Bond strength; Setting time; Fiber reinforcement

刊期 : 2020年第9期

DOI : 10.19761/j.1000-4637.2020.09.005.06

文章编号 :

基金项目 :

作者 : 段严，秦先涛

单位 : 武汉轻工大学土木工程与建筑学院，湖北武汉430023

段严，秦先涛

段严,秦先涛.3D打印混凝土相关性能研究进展[J].混凝土与水泥制品,2020(9):5-10.

DUAN Y,QIN X T.Research Progress on the Properties of 3D Printed Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(9):5-10.

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摘要

参数

结论

参考文献

引用本文

Abstract: The research progress of 3D printed concrete (3DPC) from fluidity, bond strength, setting time and fiber reinforcement is summarized. Specifically, the fluidity of 3DPC is analyzed based on the additive, gradation and special materials. While the weaknesses of bond strength of 3DPC and improvement measures are summarized. Then, the control scheme for the setting time is researched from the point of additive and cement. Meanwhile, the advantage and particularity of the use of fiber in 3DPC are analyzed. At last, the future research directions of 3DPC are proposed for promoting the development of 3DPC.

关键词:

the

混凝土

打印

and

3dpc

are

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（1）3D打印混凝土避免了施工养护过程中的模板工程和振动成型过程，从而减少模板造成的材料和人工成本，减少材料浪费，缩短施工时间，减少人为失误。同时，3D打印混凝土也可实现复杂形状混凝土结构的定制化施工，且随着硬件设备的不断升级，3D打印混凝土技术在未来可能成为建造和修复基础设施的重要辅助方式。
（2）现阶段针对3D打印混凝土的研究侧重于材料组成设计方面，主要胶凝材料是硅酸盐水泥，重点考虑的性能包括流动性、力学性能、凝结时间等方面，但从阶段性成效来看暂时还没有专门的理论来指导材料的配合比设计以适应3D打印在材料上的所有要求。目前，比较成熟的理论是由LE等提出的从混凝土添加剂出发，通过调节高效减水剂、缓凝剂、促凝剂和纤维的用量控制力学性能和流动性，兼顾了混凝土的打印效果和可施工性，并已有不少学者根据其理论开发出不少可用于3D打印的混凝土材料，普遍具有较高的抗压强度和流动性，但该理论仅针对硅酸盐混凝土材料提出，这也是出于成本控制的考虑，但不可忽视的是其他矿物材料水泥混凝土在早期强度、凝结时间等方面具有一定优势，并可专用于某些施工领域。因此，在更大范围内研究其他矿物水泥用于3D打印混凝土中的可能性对推动3D打印混凝土的发展有很大帮助。

（3）从3D打印混凝土的流动性和可施工性的需求出发，其新拌浆体材料应能通过喷嘴顺利挤出并能快速凝结成型，现有研究已经证明流动性不仅可以通过使用高效减水剂来调节，骨料的细度、掺量和种类也与流动性有着密切关系，同时使用其他的可回收骨料也能大大减少成本及碳排放，但在此方面的研究较少，未来也值得关注。
（4）长远地看，3D打印混凝土更大的潜力是用来建造大跨度、曲面等传统施工方式不能或者难以建造的现代建筑，其对混凝土的抗压强度、抗折强度等力学性能方面提出更高要求。因此，结合传统经验采用纤维增强是适宜的选择。但要注意的是，现有试验已经证明纤维的添加量应被控制在一定范围，即其对于力学性能的提升是有一定限度的，并且使用纤维会增强材料力学性能各项异性，可能会在实际运用时造成不利影响。而相对于传统硅酸盐水泥，其他矿物材料水泥虽然会存在成本高、寿命短等问题，但可使3D打印混凝土获得适宜的凝结时间和更高的早期强度。因此，也值得深入研究。

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