固废基建筑3D打印材料的制备及性能研究  

Study on preparation and performance of solid waste based 3D printing materials for buildings

作　　者：刘成 张立力 曹鑫铖 潘从玲 夏如茜 鲁旗 刘远祥[2] LIU Cheng;ZHANG Lili;CAO Xincheng;PAN Congling;XIA Ruxi;LU Qi;LIU Yuanxiang(China Logistics Group Co.,Ltd.,Beijing 100073,China;Jiangsu High Durable Concrete Engineering Technology Research Center,Suzhou Concrete and Cement Products Research Institute Co.,Ltd.,Suzhou 215004,China;School of Materials Science and Engineering,Nanjing University of Technology,Nanjing 210000,China)

机构地区：[1]中国物流集团有限公司,北京100073 [2]苏州混凝土水泥制品研究院有限公司江苏省高耐久混凝土工程技术研究中心,江苏苏州215004 [3]南京工业大学材料科学与工程学院,江苏南京210000

出　　处：《混凝土与水泥制品》2023年第12期83-88,共6页China Concrete and Cement Products

基　　金：苏州市科技计划项目(SS202117)。

摘　　要：研究了建筑垃圾(微粉、再生砂)和钢渣(粉、砂)单、双组分固废对建筑3D打印材料可打印性和力学性能的影响,并优选出了最佳配合比。结果表明:采用单组分固废较难实现固废的大掺量(>50%)利用;与同条件下的单组分固废相比,双组分固废基建筑3D打印材料的可打印性得到一定改善,其中,当m钢渣砂∶m再生砂=1∶1、m钢渣粉∶m微粉=7∶3时,JS4组打印材料的可打印性和可建造性总体上显著优于其他组;与浇筑试件相比,打印试件Y、Z方向的抗折强度相差较小,但X、Y、Z方向的抗压强度明显较低。The effects of single and dual component solid waste from construction waste(micro powder,recycled sand)and steel slag(powder,sand)on the printability and mechanical properties of 3D printing materials for buildings were studied,and the optimal mix proportion was selected.The results show that using single component solid waste is more difficult to achieve a large content(>50%)of solid waste utilization.Compared with single component solid waste under the same conditions,the printability of dual component solid waste based 3D printing materials for buildings has been improved to some extent.Among them,when msteel slag sand:mrecycled sand=1:1 and msteel slag powder:mmicro powder=7:3,the printability and constructability of JS4 group are significantly better than those of other groups overall.Compared with poured specimens,the difference in flexural strength in the Y and Z directions of printed specimens is relatively small,but the compressive strength in the X,Y and Z directions is significantly lower.

关 键 词：建筑垃圾 钢渣 配合比 建筑3D打印 可打印性 力学性能 

分 类 号：TU528.041[建筑科学—建筑技术科学]