外墙面水平施工缝的防水处理：
Waterproof treatment of horizontal construction joint of external wall:
①墙面水平施工缝加止水条的形式防止渗水。
① the horizontal construction joint on the wall shall be provided with waterstop to prevent water seepage.
②新旧砼的接缝处理。砼浇筑前24小时，施工缝用高压清水冲洗，并多次湿润砼接槎面，使新旧砼有良好的接槎。
② joint treatment of new and old concrete. 24 hours before the concrete pouring, the construction joints shall be washed with high-pressure clean water, and the concrete joint surface shall be wetted for many times to make the new and old concrete have good joint.