csmConstruction method clear bottom brush wall work content
1, the end of qing dynasty
In the process of brushing the wall, the tank section is also in the process of natural precipitation. After the end of brushing the wall, the bottom cleaning work begins, until the feeling of hitting the hammer appears, indicating that the bottom sediment is cleaned in place;
After the steel cage is placed under and before the concrete is poured, the hammer shall be used again to detect the sediment at the bottom of the tank. If the sediment at the bottom of the tank exceeds the limit10cm, the new slurry is transported into the tank by positive circulation, and the sediment at the bottom of the control tank is less than10cm.
In order to improve the impermeability and shear resistance of the joint, the joint of the first width wall is brushed and cleaned at the joint of the continuous wall.
Brush wall up and down repeatedly brush toless8timeUntil there is no mud on the brush wall, continue to use the brush wall to brush the joint wall2～3Second, thoroughly brush the joint sediment. The wall brushing tool uses a special wall brush. The wall brushing must be done before the hole is cleaned.
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