寒区面板堆石坝面板混凝土外加剂优选试验

Optimization of concrete admixtures for the face deck of the CFRD in cold region

吉林台一级水电站夏季气温高、冬季寒冷,现场根据混凝土含气量波动值大小来单独调整引气剂的掺量,减水剂与引气剂需进行复掺,本次外加剂优选试验共选择4种引气剂和4种高效减水剂.通过试验找出了适宜面板混凝土施工用的外加剂品种,保证了施工质量.

In the region of the JilintaiⅠHydropower Station,Xinjiang,the summers are very hot with high air temperature and the winters cold.The use of air entraining agent independently varies with the air entrainment of concrete,and additional use of water reducing and air entraining agencies is usually mandatory.Trials of four air entraining agencies and four high efficiency water reducing agencies were conducted.These trials have permitted selection of suitable admixtures for the face concrete of the dam to ensure good quality construction.