UEA对冬期制备蒸养混凝土抗冻性的影响研究  

Effect of UEA on the freezing resistance of steam-curing concrete prepared in winter

作　　者：辛运来[1,2] 李晓[1] 牛晚扬[1] 

机构地区：[1]沈阳建筑大学材料科学与工程学院,辽宁沈阳110168 [2]辽宁诚信商砼有限公司,辽宁沈阳110001

出　　处：《混凝土》2016年第5期129-131,共3页Concrete

基　　金：辽宁省教育厅一般项目(L2014231);住房和城乡建设部研究开发项目(2014-K4-029)

摘　　要：采用慢冻法,研究了掺加UEA对冬期制备的蒸养混凝土抗冻性影响。不同UEA掺量的混凝土在蒸养后采用不同的室外养护措施。在其他原料配合比不变的条件下,掺加UEA对冬期制备蒸养混凝土抗冻性有利,但劣于不掺的标准养护混凝土。且随UEA掺量的增加,期制备的蒸养混凝土抗冻性先增加后降低。蒸养混凝土覆膜后再转入室外养护在冬期制备中较有利于UEA的作用发挥。该养护措施下,UEA的最佳掺量为6.0%。The effect of UEA is studied in this paper.Three kinds of curing modes are used for concrete after steam curing with slow freezing method. In the same mix proportion except UEA, the freezing resistance of the steam - curing concrete with UEA is better than without it,but worse than standard curing concrete without it at the same age.With UEA increasing,the freezing resistance increases and then decreases.Covering by film is good for the steam - curing concrete with UEA in winter.The best volume of UEA is 6% in this con- dition.

关 键 词：蒸养混凝土 养护 UEA 抗冻性 

分 类 号：TU528.064[建筑科学—建筑技术科学]