水泥基自流平砂浆制备及其性能研究  

Research on preparation and performance of cement-based self-leveling mortar

作　　者：王卫东 WANG Weidong(Nanjing Xingyou Transportation Technology Co.,Ltd.,Nanjing 210000,Jiangsu,China)

机构地区：[1]南京兴佑交通科技有限公司,江苏南京210000

出　　处：《工程建设》2025年第2期8-13,共6页Engineering Construction

摘　　要：为解决地面大面积找平问题,采用水泥、硅砂粉、硅灰以及其他添加剂,制备一种水泥基自流平砂浆,研究骨料粒径、胶砂比、纤维素醚、可再分散乳胶粉、硅灰等用量对自流平砂浆性能的影响。结果表明:骨料粒径≤1.18 mm、胶砂比为1.0∶1.2、纤维素醚质量分数为0.03%、可再分散乳胶粉质量分数为1.0%、硅灰质量分数为5%、水胶比为0.35制备得到的自流平砂浆,其初始流动度和20 min流动度可达140 mm以上,24 h抗压和抗折强度分别为9.2、3.5 MPa,28 d抗压和抗折强度分别为34.4、6.4 MPa,符合《地面用水泥基自流平砂浆》(JC/T 985—2017)的技术要求。本文成果可为停车场、车间、仓库、建筑装饰等地面找平提供一点参考。In order to solve the problem of large-scale leveling on the ground,a cement-based self-leveling mortar is prepared by using cement,silica sand powder,silica fume and other additives,and the effects of aggregate size,cement sand ratio,cellulose ether,redispersible latex powder,silica fume and other dosages on the performance of self-leveling mortar are studied.The results show that the self-leveling mortar prepared with aggregate size≤1.18 mm,cement sand ratio of 1.0:1.2,cellulose ether mass fraction of 0.03%,redispersible latex powder mass fraction of 1.0%,silica fume mass fraction of 5%,and water-glue ratio of 0.35 has an initial fluidity and 20 min fluidity of more than 140 mm,and the 24 h compressive and flexural strengths are 9.2 and 3.5 MPa,respectively,and the 28 d compressive and flexural strengths are 34.4 and 6.4 MPa,respectively,which meet the technical requirements of"Cement-based Self-leveling Mortar for the Ground"(JC/T 985—2017).

关 键 词：自流平砂浆 水泥基 性能 掺量 

分 类 号：TU528.2[建筑科学—建筑技术科学]