掺GL-B4型高效引气减水剂在混凝土中的抗冻性能试验研究  

GL-B4-efficiency air-entraining water-reducing agent in concrete study on the freeze-thaw resistance

作　　者：杭美艳[1] 张锦霞 张凤霞 

机构地区：[1]内蒙古科技大学,内蒙古包头014010 [2]包头市建设工程质量检测试验中心,内蒙古包头014010 [3]包头市钢鹿建筑材料有限公司,内蒙古包头014010

出　　处：《混凝土》2010年第6期89-90,103,共3页Concrete

基　　金：内蒙古自然科学基金项目(200607010702);内蒙古高等学校科学研究项目(NJ05068)

摘　　要：研究了不同水灰比混凝土掺加引气剂后的抗冻性能,控制含气量4%左右时,随水胶比的降低,混凝土的抗冻性能明显增加。对掺GL-B4高效引气减水剂的YC20和YC40混凝土的抗冻性进行了研究,试验得出YC40混凝土达到F300时,含气量达4.5%以上,强度不降低,耐久性能提高。而YC20则不同,因此,GL-B4型高效引气减水剂不适用于水胶比0.6以上的混凝土。The frost resistance on different water-cement ratio of concrete after the air-entraining agent admixture.When the gas is controlled about 4%,with the lower water-cement ratio,freeze-thaw resistance of concrete is increased significantly.And then the frost resistance of YC20 and YC40 concrete which are mixed in efficient air-entraining water-reducing agent were studied,the experiment results that when the concrete YC40 reached F300,gas content reached more than 4.5%,and the strength without reducing,the durability would improve.But the YC20 is different,so,GL-B4-efficiency air-entraining water-reducing agent does not apply to the water-cement ratio above 0.6 of the concrete.

关 键 词：引气剂 高效引气减水剂 强度 抗冻性 

分 类 号：TU528.042.2[建筑科学—建筑技术科学]