3D打印混凝土研究现状及前景展望  

Research Status and Prospects of 3D Printing Concrete

作　　者：汤寄予[1] 张亚可 高丹盈[1,2] 房栋 尤培波 魏东[2] TANG Jiyu;ZHANG Yake;GAO Danying;FANG Dong;YOU Peibo;WEI Dong(School of Civil Engineering,Zhengzhou University,Zhengzhou 450001,China;School of Water Conservancy Science and Engineering,Zhengzhou University,Zhengzhou 450001,China;School of Civil and Traffic Engineering,Henan University of Urban Construction,Henan Pingdingshan 467000,China)

机构地区：[1]郑州大学土木工程学院,郑州450001 [2]郑州大学水利科学与工程学院,郑州450001 [3]河南城建学院土木与交通工程学院,河南平顶山467000

出　　处：《河南大学学报（自然科学版）》2022年第6期734-744,共11页Journal of Henan University:Natural Science

基　　金：国家自然科学基金资助项目(52108207);河南省自然科学基金资助项目(212300410106)。

摘　　要：随着第四次工业革命朝人工智能方向迈进,建筑业迎来智能建造时代.3D打印混凝土技术所具有的高效、智能和精确等技术优势及其所带来的人力需求少、资源消耗少和环境负载低等经济和社会效益将使其成为建筑业智能建造发展的关键环节.但3D打印混凝土技术与传统混凝土技术有很大区别,无论是打印材料还是打印装备等都需进行技术变革.本文介绍了3D打印混凝土以层间弱界面和力学各向异性为代表的主要特征;分析了打印间隔、打印速率、挤出形状和打印路径等参数对打印效率和打印结构力学性能的影响;探讨了原材料选择及配合比设计对可打印性能及力学性能的作用;总结了3D打印混凝土力学性能测试方法及发展3D打印混凝土在材料制备和装备研发等方面所面临的主要问题,最后展望了3D打印超高性能混凝土在建筑业智能建造方面的未来前景.With the fourth industrial revolution moving towards artificial intelligence, the construction industry had ushered in the era of intelligent building. 3 D printed concrete(3 DPC) technology, with the advantages of high efficiency, intelligence and precision, had become a key link in the development of intelligent building, and achieved economic and social benefits of low manpower demand, low resource consumption and low environmental load. However, the 3 DPC technology needed technological innovations in materials and equipment because it was different from traditional concrete technology. In this paper, the main characteristics of 3 DPC represented by the weak interlayer interface and mechanical anisotropy were introduced. The influences of printing interval, printing speed, extrusion shape and printing path on printing efficiency and mechanical properties of printed structure were analyzed. The effects of raw material selection and mix design on printability and mechanical properties were discussed. The test methods of mechanical properties of 3 DPC and the main problems faced in the development of 3 DPC in material preparation and equipment research were reviewed. Finally, the future of 3 D printed ultra-high performance concrete in intelligent buildings were prospected.

关 键 词：层间弱界面 各向异性 可打印性能 力学性能 3D打印超高性能混凝土 

分 类 号：TU528[建筑科学—建筑技术科学]