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围绕建筑垃圾资源化高值利用，提出了基于红砖再生微粉的固废增材制造工艺路线。通过分级粉碎、精准筛分及含水率控制，实现了原料的高效预处理。在材料复配环节，固定水胶比为0.35与胶砂比为0.5，对再生砂进行预湿处理以保证工作性能。实验室打印采用特制配比水泥26%、再生微粉3%、再生砂58%、辅以纤维及多种功能添加剂，探索打印参数，并设计了工业级打印方案。研究表明，该工艺成功解决了固废增材的粒径控制与成型稳定性难题，整个流程固废掺量>60%，在实验室和工厂层面分别构建了完整的从固废预处理、微粉化制备、材料优化设计到结构成型打印与标准化养护的体系，实现了建筑垃圾高效转化为可定制化、高性能的3D打印制品，为固废基绿色建材的规模化生产与低碳发展提供了可行的技术范式与实践支撑。
Abstract：This study focuses on the high-value utilization of construction waste through resource recovery and proposes a solid waste additive manufacturing process route based on red brick recycled micro-powder. Through graded crushing, precise screening and moisture content control, efficient pretreatment of raw materials is achieved. In the material compounding process, a fixed water-binder ratio(0. 35) and cement-sand ratio(0. 5) are maintained, and the recycled sand is pre-wetted to ensure workability. Laboratory printing adopts a specially formulated ratio(cement 26%, recycled micropowder 3%, recycled sand 58%, supplemented with fibers and various functional additives), explores printing parameters, and explores industrial-scale printing solutions. The research shows that this process successfully solves the problems of particle size control and molding stability in solid waste additive manufacturing. The solid waste content in the entire process is >60%. A complete system from solid waste pretreatment, micro-powder preparation, material optimization design to structural molding printing and standardized curing has been established at both the laboratory and factory levels, achieving the efficient conversion of construction waste into customizable, high-performance 3D printed products. This provides a feasible technical paradigm and practical support for the large-scale production and lowcarbon development of solid waste-based green building materials.
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基本信息:
DOI：10.19740/j.2096-9872.2025.04.06
中图分类号:X799.1;TU50
引用信息:
[1]周华杰,梁晓波,杨帅.固废基3D打印制品成型与应用技术研究[J].北京建筑大学学报,2025,41(04):45-53.DOI:10.19740/j.2096-9872.2025.04.06.
基金信息:
中国中冶“181计划”重大研发项目