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    混凝土浇筑前应用水冲洗并充分湿润基槽,混凝土浇筑分两步进行,第一步浇至上层钢筋底,混凝土终凝后剔毛、刷浆,起垫三点,紧固好螺栓后再浇筑第二步混凝土。混凝土需振捣密实且与井周凿除面紧密结合。混凝土以上预留高度应保证井盖周围沥青大于上面层的设计厚度。

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