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普通硅酸盐水泥基3D打印砂浆的性能及应用(英文)
作者:  蔺喜强 陈文洁   李国友 戢文占 
单位:(中国建筑股份有限公司技术中心 北京 101300) 
关键词:硅酸盐水泥 3D打印砂浆 触变性 抗压强度 层间粘结强度 3D打印房屋 
分类号:TQ172.11
出版年,卷(期):页码:2019,47(11):0-0
DOI:
摘要:

 以普通硅酸盐水泥(OPC)为胶凝材料制备具有快硬早强性能的3D打印砂浆。研究了OPC-3D打印砂浆的工作性、力学性能、层间粘结强度和收缩性能。结果表明:制备的OPC-3D打印砂浆初始状态的贯入强度约为0.05 MPa,在35 min时它的贯入强度达到0.7 MPa,之后强度快速增长。减水剂和触变剂能够使OPC-3D打印砂浆具有适合于3D打印施工的工作性,3D打印试件的28 d抗压强度能达到C40;3D打印的砂浆试件的抗压强度和钢筋握裹强度比标准模具成型的试件强度分别降低了10.65%和8.84%;3D打印试件的层间粘结强度为2.53 MPa;硫铝酸盐水泥早强组分水化生成钙矾石不仅促进了OPC-3D打印砂浆凝结,而且使其在标准养护条件下具有一定微膨胀性能。并利用普通硅酸盐水泥3D打印砂浆打印了小型房屋和构件。

基金项目:
中建股份课题(CSCEC-2017-Z-8)
作者简介:
参考文献:

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