钢渣-矿渣复合水泥基材料3D打印性能  

3D Printing Performance of Composite Cement-based Materials with Blast Furnace Slag and Steel Slag

作　　者：朱伶俐[1] 杨章 赵宇[2] 管学茂[1] 武喜凯 ZHU Lingli;YANG Zhang;ZHAO Yu;GUAN Xuemao;WU Xikai(School of Materials Science and Engineering,Henan Polytechnic University,Jiaozuo 454000,Henan,China;School of Civil Engineering,Henan Polytechnic University,Jiaozuo 454000,Henan,China)

机构地区：[1]河南理工大学材料科学与工程学院,河南焦作454000 [2]河南理工大学土木工程学院,河南焦作454000

出　　处：《材料导报》2023年第12期107-112,共6页Materials Reports

基　　金：国家自然科学基金(U1504513,U1905216)。

摘　　要：为了提高固体废弃物的资源化利用,探究利用钢渣制备3D打印水泥基材料的可行性,研究了钢渣、矿渣的质量比对复合水泥基材料流变特性、可打印性和力学性能的影响规律。结果表明,随着钢渣质量的增加,浆体的流动度和静态屈服应力增大,塑性粘度减小,可挤出性增强,变形率降低,同时抗压强度显著降低。通过Zeta电位测试发现,随着钢渣掺量的增加,Zeta电位绝对值变小,胶体颗粒间引力增大,导致静态屈服应力增大。而随着矿渣掺量的增加,浆体固含量增多,固体颗粒间摩擦加剧,产生了更多絮凝结构和网状结构,提高了浆体的塑性粘度。In order to improve the resource utilization of solid waste and explore the feasibility of using steel slag to prepare 3D printing cement-based materials,the influence of the mass ratio of steel slag to blast furnace slag on the rheology,printability and mechanical properties of compo-site cement-based materials is researched.The results showed that the fluidity and static yield stress of paste increased,the plastic viscosity decreased,the extrudability increased,the deformation rate decreased,and the compressive strength decreased significantly with the increase of steel slag content.It is found that the absolute value of Zeta potential decreases,the gravity between colloidal particles increases with the increase of steel slag content,which results the increase of static yield stress.The solid content of paste increased,the friction between solid par-ticles intensified with the increase of blast furnace slag content,which produced more flocculation structure and network structures,and improved the plastic viscosity of paste.

关 键 词：3D打印水泥基材料 流变 可打印性 钢渣 矿渣 

分 类 号：TU528[建筑科学—建筑技术科学]