Why should we add air holes to the embedded parts of the steel structure?
The embedded parts is provided with a ventilating has two uses: one is that it can be used to insert concrete vibrator vibration rod.
The embedded piece is too big, and the air vent is also called an overflow hole, and the vibrator can be inserted into the vibrating concrete from the hole, and the concrete under the embedded part is more compact and clings to the embedded part
Another is due to concrete pouring into mold, into many gases, the vibrating rod under the action of gas accumulation in the lower part of the embedded parts take up, not go out, the formation of voids, the influence of embedded parts anchor, hole, air run, this part of the concrete filled. So, the concrete steel embedded parts should be appropriate to open some air holes.
