In the south, there is lots of rainning day in summer, so it is necessary to do waterproofing for building formwork, since they are made of hot-pressed glue. With the increase of the number of turnovers and the cross-section is eroded by water immersion, building formwork is becoming no longer waterproof. Apply oil on the surface of building formwork after it removed.
In the north, due to high temperature, dryness and strong wind weather in summer, it cause many defects for concrete, especially dry cracking.
Therefore, the concrete pouring on the construction site should avoid the high temperature period, and pay much attention on maintenance of the concrete in hot weather.
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