3D打印用砂浆的可打印性能研究

硅酸盐通报 ›› 2024, Vol. 43 ›› Issue (5): 1615-1622.

• “3D 打印无机非金属材料”专题(II) • 上一篇下一篇

3D打印用砂浆的可打印性能研究

李飞¹, 卢亚¹, 李威翰¹, 徐小明², 周华杰³, 张政¹, 周理安¹

1.北京建筑大学,北京节能减排与城乡可持续发展省部共建协同创新中心,北京 100044;
2.中国二十二冶集团有限公司,北京 100062;
3.北京崇建工程有限公司,北京 100061

收稿日期:2023-11-23 修订日期:2024-01-15 出版日期:2024-05-15 发布日期:2024-06-06
作者简介:李飞(1981—),男,博士,教授。主要从事建筑垃圾资源化利用和高性能混凝土及其原材料的研究。E-mail:lifei@bucea.edu.cn
基金资助:
中国二十二冶集团有限公司重点研发计划;国家重点研发计划(2022YFC3803400)

Study on Printability of Mortar for 3D Printing

LI Fei¹, LU Ya¹, LI Weihan¹, XU Xiaoming², ZHOU Huajie³, ZHANG Zheng¹, ZHOU Li'an¹

1. Beijing Energy Conservation & Sustainable Urban and Rural Development Provincial and Ministry Co-Construction Collaboration Innovation Center, Beijing University of Civil Engineering and Architecture, Beijing 100044, China;
2. China MCC22 Group Corporation Ltd, Beijing 100062, China;
3. Beijing Chongjian Engineering Co., Ltd, Beijing 100061, China

Received:2023-11-23 Revised:2024-01-15 Online:2024-05-15 Published:2024-06-06

摘要/Abstract

摘要： 现有研究和相关技术标准多采用观测法检验3D打印材料的打印性能,缺少对可挤出性和可建造性的量化评价指标。本文基于流动度等常规工作性能指标对可打印性能的影响,提出挤出均匀性、累计形变率两个量化指标,用于评价3D打印材料的可打印性能,并在本试验条件下建立常规工作性能指标与打印质量的联系。结果表明:3D打印砂浆的挤出均匀性随流动度的增加先提高后降低,随动态屈服应力的增加而降低;累计形变率随高度保留率的增加而降低,随静态屈服应力的增加而降低。本试验参数条件下,当挤出均匀性小于3.5%、累计变形率不大于6%、动态屈服应力为200~800 Pa、静态屈服应力为1 800~3 300 Pa时,砂浆打印层数较高(不小于30层),可打印性能较好。

关键词: 3D打印, 可挤出性, 可建造性, 挤出均匀性, 累计形变率, 评价方法

Abstract: Observational methods are widely used to assess the printing performance of 3D printing materials in current research and technical standards, lacking of quantitative evaluation for extrudability and constructability. In this paper, based on the influences of conventional working performance indicators such as fluidity on printability, two quantitative indicators of extrusion uniformity and cumulative deformation rate were proposed to evaluate the printability of 3D printing materials, and the relationship between conventional working performance indicators and printing quality was established under experimental conditions. The results show that the extrusion uniformity of 3D printing mortar increases first and then decreases with the increase of fluidity, and decreases with the increase of dynamic yield stress. The cumulative deformation rate decreases with the increase of height retention rate and decreases with the increase of static yield stress. Under the conditions of this test parameters, when the extrusion uniformity is less than 3.5%, the cumulative deformation rate is not more than 6%, the dynamic yield stress is 200～800 Pa, and the static yield stress is 1 800～3 300 Pa, the number of printing layers of mortar is higher (not less than 30 layers), and the printability is better.

Key words: 3D printing, extrudability, constructability, extrusion uniformity, accumulated deformation rate, evaluation method

中图分类号:

TU528

李飞, 卢亚, 李威翰, 徐小明, 周华杰, 张政, 周理安. 3D打印用砂浆的可打印性能研究[J]. 硅酸盐通报, 2024, 43(5): 1615-1622.

LI Fei, LU Ya, LI Weihan, XU Xiaoming, ZHOU Huajie, ZHANG Zheng, ZHOU Li'an. Study on Printability of Mortar for 3D Printing[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(5): 1615-1622.

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3D打印用砂浆的可打印性能研究

Study on Printability of Mortar for 3D Printing

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