长城杯在施部位作业要求.doc

长城杯在施部位作业要求
一、 顶板砼混凝土浇筑完成
1、 振捣：严禁用振捣棒摊平，必需用木耙或平锹摊平；注意把握振捣时间，避免浮浆太多影响强度，进而引起板面开裂，尤其是墙，柱部位，浮浆过多给施工缝剔出石子带来困难。
2、 浇筑前应拉通线检查板筋的标高，以避免保护层过小或钢筋外露或面层不平。
3、 刮平：用4m大杠刮平，同时必须拉线严格控制平整度；局部狭小或不易操作部位用2m杠刮平。必要时应沿板面拉线，控制板面平整度偏差在5mm以内。局部泌水集中部位平整度必不合格，应严格控制并扫除泌水。
4、 后浇带施工缝处保护层：应重点控制该部位浇筑厚度，终凝前认真核查，找平，确保保护层为15mm。
二次搓面：注意抹子操作方向应统一。在距筒墙和柱边150mm宽范围内应使用大杠，严格检
Great Wall Cup in facilities site operational requirements
First, the completion of concrete placement of concrete roof
1, vibration: prohibit the use of vibrating rod folded down, must rake or flat shovel with a wooden stalls level; pay attention to the vibration time, to avoid too much influence floating pulp strength, and subsequent board cracking, especially in the wall, column position, floating over to the construction joint ruled out pulp stones difficult.
2, before pouring Check Ligament-through line of elevation, to avoid the protective layer is too small or reinforcing bars, or uneven surface.
3 Calibrating: Calibrating with a 4m great bar, and must strictly control the smoothness of pull; local area with small or difficult to operate 2m bar evenness. Necessary, pull along board, control panel surface flatness deviation of less than 5mm. Local site smoothness bleeding focus will fail, and should be strictly controlled to eliminate bleeding.
4, after casting with a protective layer construction joints: we should focus on controlling the thickness of the parts of casting, check carefully before final setting, leveling, to ensure the protection layer is 15mm.
Second rubbing surface: note the direction of the trowel should be unified operation. In the side away from the cylinder walls and columns should be used within 150mm wide large bar, strict inspection