聚合物改性砂浆动态抗开裂性研究  

Dynamic Crack Resistance of Polymer-modified Cement Mortar

作　　者：马保国[1] 吴媛媛[1] 张风臣[1] 戴璐[1] 

机构地区：[1]武汉理工大学硅酸盐材料教育部重点实验室,武汉430070

出　　处：《武汉理工大学学报》2010年第8期5-8,共4页Journal of Wuhan University of Technology

基　　金："十一五"国家科技支撑计划项目(2006BAF02A29)

摘　　要：对不同配比的聚合物改性砂浆进行动态抗开裂试验,探讨乙烯-醋酸乙酸共聚物、抗裂剂（KH2）、水泥、双级配填料掺量对砂浆动态开裂性的影响,为配制高抗裂聚合物改性砂浆提供依据。试验表明,聚灰比在0.12左右,KH2掺量2%~2.5%,水泥掺量20%~30%,粗颗粒填料A与细颗粒填料B的比例为1∶2左右均可使聚合物改性砂浆抗开裂性能提高。By the dynamic crack resistance test of polymer-modified cement mortar in mixture ratio,the influence of ethylene-vinyl acetate copolymer,antimitotic agent（KH2）,cement and fillings of two grades on dynamic crack resistance have been studied.It can be used reference for the design of mix proportion of the polymer-modified cement mortars with high crack resistance.The result shows that when 0.12 of polymer/cement ratio,2%～2.5% of KH2,20%～30% of cement and 1∶2 of coarse graded fillings/fine graded fillings,the performance of dynamic crack resistance of polymer-modified cement mortars is improved.

关 键 词：聚合物改性砂浆 动态开裂 聚灰比 KH2 

分 类 号：TU528[建筑科学—建筑技术科学]