摘要
参照CDF盐冻试验标准研究了气泡间距系数对水泥混凝土抗盐冻性能,研究结果表明:混凝土抗盐冻性能随气泡间距系数减小而迅速提高,并具有很好的相关性;当气泡间距系数在0.2 mm以下时,混凝土剥蚀量的下降幅度随气泡间距系数减小而减缓,控制气泡间距系数可很好地改善混凝土的抗盐冻性能。
The frost-salt resistances of concrete were investigated according to the CDF method effects of air void systems introduced by differ- ent air entraining agent.The results showed that the frost-salt resistance of concrete increased with the decreasing of spacing factor and increasing of air content.The speed of frost-salt scaling of concrete was reduced when the spacing factor less than 0.200 mm.The results also showed that the frost-salt resistance of concrete of different surface exist difference.The frost-salt resistance of concrete can improve by controlling of the spacing factor not the air content.
出处
《混凝土》
CAS
CSCD
北大核心
2012年第8期8-9,13,共3页
Concrete
基金
西部交通项目(2009CB01)
"863"国家高新技术项目(2009AA03Z508)
关键词
混凝土
气泡间距系数
盐冻
含气量
concrete
air void spacing factor
frost-salt scaling
air content
