沉井混凝土冬季施工技术

Constructional technique of well-sinking concrete in winter

介绍六股河特大桥沉井井壁混凝土为期三个月的冬季施工方法 ,对在东北严寒地区进行混凝土的生产、运输、养护等成功的经验进行了总结。提出了大体积混凝土施工时 ,如果没有良好的保温措施 ,只用防冻剂是达不到预期效果的 ,证明采用桑那炉蒸汽养护法进行大体积混凝土养护 ,是一种极好的方法。

The paper introduces winter constructional method lasting three months of well sinking wall concrete of Liugu river most great bridge, summarizes successful experience of production, transportation and maintainance of concrete in cold Dongbei area, puts forwards that if there is good heat preservation measure, only using antifreeze concrete construction of large cubic content doesn't achieve the desired results, proves that it is a perfect method maintaining concrete of large cubic content using sauna furnace vapour method.