聚合物胶粉掺量对硫铝酸盐水泥砂浆性能影响研究  

The Influence Research on Polymer Emulsion Powder Content on the Properties of Sulpho-aluminate Cement Mortar

作　　者：康明旭 鲁耀刚 黄乙纯 罗章华 吴晚霞 

机构地区：[1]合诚工程咨询集团股份有限公司,厦门361009 [2]厦门合诚工程技术有限公司,361027 [3]厦门市快速公交场站有限公司,361004

出　　处：《混凝土与水泥制品》2018年第9期28-31,共4页China Concrete and Cement Products

基　　金：福建省住房和城乡建设厅科学技术项目(2016-K-51)

摘　　要：通过测试不同聚合物胶粉种类、不同聚合物胶粉掺量硫铝酸盐水泥砂浆在自然养护条件下的性能变化规律,研究了其对硫铝酸盐水泥砂浆性能的影响。结果表明:在自然养护条件下,当聚合物胶粉掺量为4%时,初凝时间和终凝时间分别延长30 min、20 min;当聚合物胶粉掺量为2%时,流动度提高了11.1%,1 d、28 d的抗折强度分别提高10.3%、15.73%;随着聚合物胶粉掺量的增加,砂浆的早期抗压强度(1 d)逐渐降低,当掺量为2%时,28 d抗压强度小幅提高;随着聚合物胶粉掺量的增加,干缩率逐渐降低。The effect of different kinds of polymer emulsion powder and dosage on sulpho-aluminate cement mortar under the condition of the natural curing were investigated. The results show that, under the condition of natural curing, the addition of 4% polymer emulsion powder extends the initial setting time 30 min and final setting time 20 min; when mixing with 2%, the fluidity increase 11.1%, the flexural strength of 1 d and 28 d cement mortar increase 10.3% 、15.73%,respectively. And the compressive strength of 28 d cement mortar has a slight increase. With increasing polymer dosage, the early strength（1 d） and day shrinkage of mortar gradually decreases.

关 键 词：硫铝酸盐水泥 聚合物胶粉 力学性能 干缩性 

分 类 号：TU528.041[建筑科学—建筑技术科学]