钢渣掺量对3D打印地质聚合物材料新拌浆体流变性的影响  

Effect of Steel Slag Content on the Rheology of 3D Printing Geopolymer Pastes

作　　者：张大旺[1] 王栋民[1,4] 朴春爱 蔺喜强 张涛[3] 夏江宝[4] ZHANG Dawang;WANG Dongmini;PIAO Chunai;LIN Xiqiang;ZHANG Tao;XIA Jiangbao(China University of Mining and Technology Institute on Concrete ＆ Eco-Materials,Beijing 100083,China;Xi＇an Wall Materials Research and Design Institute Ltd.Xi＇an 710061,China;China State Construction Company Limited Technology Center,Beijing 101300,China;Shandong Provincial Key Laboratory of Eco-Environmental Science for Yellow River Delta,Binzhou University,Binzhou 256600,China)

机构地区：[1]中国矿业大学(北京)化学与环境工程学院混凝土与环境材料研究所,北京100083 [2]西安墙体材料研究设计院有限公司,西安710061 [3]中国建筑股份有限公司技术中心,北京101300 [4]滨州学院山东省黄河三角洲生态环境重点实验室,山东滨州256600

出　　处：《应用基础与工程科学学报》2018年第3期596-604,共9页Journal of Basic Science and Engineering

基　　金：国家自然科学基金面上项目(51572293);国家重点研发计划资助(2017YFC0505904);山西省煤基重点项目(MC2014-04)

摘　　要：研究了钢渣掺量对钢渣-矿渣基地质聚合物3D打印材料新拌浆体流变性的影响.实验结果表明：修正Bingham模型用于表征3D打印材料浆体流变模型更为准确;随钢渣掺量的增加,新拌浆体剪切应力和屈服应力的增大同时其塑形黏度降低;新拌浆体的流变特性决定其早期构件的完整性,快速增长的屈服应力确保了其挤出后的成型能力;优异的剪切变稀能力有利于运输过程中的管内压力降低.The rheology of 3D printing geopolymer pastes were investigated at different steel slag content. The results indicate that the rheological model of 3 D printing geopolymer pastes was modified Bingham model. With the steel slag increases,the yield stress of printing pastes decrease. And plastic viscosity of fresh printing pastes had adverse stations. Buildability of printing construction was determined by its rheology at early age： rapidly growing yield stress ensures the formability of printing pastes; the great ability of shear thinning reduces the tube pressure in the period of transportation.

关 键 词：3D打印地质聚合物材料 工作性能 流变性能 触变性 

分 类 号：TG174[金属学及工艺—金属表面处理]