What is the range of concrete vibrating rods?
Concrete vibrator bar vibrator range is 300MM, so the vibration in the concrete spacing can not be greater than 500MM.
1) When concrete is layered, the thickness of each layer of concrete shall not exceed 1.25 times of that of the vibrating bar. When vibrating the upper layer, it shall be inserted into the lower layer for about 5cm to eliminate the seams between the two layers.
The upper concrete is to be carried out before the lower concrete is initially primed