In many places, the winter air temperature is below zero ℃, at this time the water will not only freeze but also seriously affect the concrete quality. When the temperature is in 0 ~ 4 ℃, the concrete setting time is three times longer than that of 15℃, and when the temperature is in 3 ~ 5 ℃, the concrete will freeze and its reaction will stop. While when the temperature falls to -10 ℃, the hydration reaction will totally stop, and the concrete strength will no longer grow. Moreover, the quality and safety risk of winter construction is big. So the winter construction ofmust take corresponding measures.
Then what aspects should we pay attention to the winter construction of concrete batch plant? First is the heat preservation of aggregate storage bin, which mainly means building greenhouses. The greenhouse height must satisfy the filling height of loader. Second is the heat preservation of belt conveyor. It mainly adopts heat preservation cotton or winter protection blanket to cover it all round and prevent sand heat losses.
According to the characteristics of , the small concrete mixer console should be located in the mixing building, and when winter comes, we should close and seal the mixing building. And before starting the small concrete mixer, we must check whether the various components are flexible, and heat the reducer, in case the overload will burn control circuit apparatus.
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