硅酸盐通报2024，Vol.43Issue(5)：1623-1632,10.
3D打印煤矸石砂浆流变性能、打印性能与力学性能研究
Research on Rheological Properties,Printability and Mechanical Properties of 3D Printing Coal Gangue Mortar
摘要
Abstract
To expand the application scope of coal gangue.In this study,gangue aggregate is used to partially or completely replace(mass fraction of 0％,50％and 100％)nutural sand in 3D printing mortar,and the effect of gangue aggregate addition on the the rheological model,rheological properties,printability,and mechanical properties of 3D printing mortar was systematically examined.The results reveal that,the addition of coal gangue reduces the mechanical properties of 3D printing mortar,but when the coal gangue content is 100％,the compressive strength at 28 d still exceeds 30 MPa,meeting the requirements for mechanical properties.The rheological properties of 3D printing mortar mixed with gangue aggregate conform to the modified Bingham model.Both static yield stress and dynamic yield stress increase proportionally with higher gangue doping.Notably,when the gangue doping is 100％,the growth rate of time-dependent static yield stress is fast,while the growth rates of time-dependent flowability and time-dependent dynamic yield stress are slow.This indicates that the introduction of gangue significantly improves the printability of 3D printing mortar.关键词
煤矸石/3D打印砂浆/流变特性/可打印性能/流动度/力学性能Key words
coal gangue/3D printing mortar/rheological property/printability performance/flowability/mechanical property分类
建筑与水利引用本文复制引用
彭少斌,管学茂..3D打印煤矸石砂浆流变性能、打印性能与力学性能研究[J].硅酸盐通报,2024,43(5):1623-1632,10.基金项目
国家自然科学基金重点项目(U1905216) （U1905216）
河南省高等学校重点科研项目计划支持(24B430009) （24B430009）
河南省科技攻关项目(232102320191,242102230136) （232102320191,242102230136）
