冻结井筒高强混凝土水化热规律研究

Research on hydratation heat law of high strength concrete in mine freezing shaft

为了研究冻结井筒高强混凝土水化热规律,对井壁高强混凝土的水化放热规律作了试验研究,并结合有限元数值模拟分析发现:混凝土水化热对冻结壁的影响范围在0.5m以内;井壁混凝土在浇筑后25~40d才进入负温养护,深冻结井井壁高强高性能混凝土的水化热最高温升一般发生在20~35h,比水利工程等大体积普通混凝土的最高温升提前了3~4d。

In order to research the hydratation heat law of the high strength concrete in the mine freezing shaft, an experiment research was conducted on the hydratation heat law of the high strength concrete in the mine freezing shaft.In combined with the finite element numerical simulation analysis, it was found that the influence scope of the high strength concrete in the mine freezing shaft was within 0.5 m.After 25~40 days of the concrete pouring in the mine freezing shaft, the minus temperature curing of the co...