硅酸盐通报2024，Vol.43Issue(5)：1615-1622,8.
3D打印用砂浆的可打印性能研究
Study on Printability of Mortar for 3D Printing
摘要
Abstract
Observational methods are widely used to assess the printing performance of 3D printing materials in current research and technical standards,lacking of quantitative evaluation for extrudability and constructability.In this paper,based on the influences of conventional working performance indicators such as fluidity on printability,two quantitative indicators of extrusion uniformity and cumulative deformation rate were proposed to evaluate the printability of 3D printing materials,and the relationship between conventional working performance indicators and printing quality was established under experimental conditions.The results show that the extrusion uniformity of 3D printing mortar increases first and then decreases with the increase of fluidity,and decreases with the increase of dynamic yield stress.The cumulative deformation rate decreases with the increase of height retention rate and decreases with the increase of static yield stress.Under the conditions of this test parameters,when the extrusion uniformity is less than 3.5％,the cumulative deformation rate is not more than 6％,the dynamic yield stress is 200～800 Pa,and the static yield stress is 1 800～3 300 Pa,the number of printing layers of mortar is higher(not less than 30 layers),and the printability is better.关键词
3D打印/可挤出性/可建造性/挤出均匀性/累计形变率/评价方法Key words
3D printing/extrudability/constructability/extrusion uniformity/accumulated deformation rate/evaluation method分类
建筑与水利引用本文复制引用
李飞,卢亚,李威翰,徐小明,周华杰,张政,周理安..3D打印用砂浆的可打印性能研究[J].硅酸盐通报,2024,43(5):1615-1622,8.基金项目
中国二十二冶集团有限公司重点研发计划 （）
国家重点研发计划(2022YFC3803400) （2022YFC3803400）
