The sequence of formwork removal is a very important part of the construction process, which is related to the quality and safety of the whole building. The order of formwork dismantling needs to follow certain rules, and it needs to be from non-load-bearing to load-bearing, which is consistent with the sequence of formwork support.
When removing the formwork at the beam and slab site, the early removal technique can be employed, which means that the removal of the formwork can begin soon after the concrete is poured. In the early demolition technique, the construction personnel will leave 1-2 keels as support to ensure that the early strength of the concrete will not be affected by the removal of the formwork. In addition, the dismantling of each formwork must be implemented in compartments, so that the impact on the structure can be effectively reduced, and the safety and stability of construction can be guaranteed. In addition, the weight of the temporary stacking formwork must not exceed the bearing capacity of the concrete floor slab, which is to avoid the additional load on the floor slab because of the temporary stacking of the formwork, thereby affecting the safety of the overall structure.
If the span of the beam and plate is large, the construction personnel should dismantle from the middle of the span to both ends, so that the impact on the whole structure can be effectively reduced because of the removal of the formwork on one side. This demolition method requires the construction personnel to have a high level of technology and rich experience to ensure that the demolition process will not have an adverse impact on the structure.
When dismantling the column wall formwork, special attention needs to be paid to ensuring that the concrete strength meets the design requirements. The dismantling of the column formwork should strictly avoid damaging the edges and corners and surface of the concrete, so as to ensure the integrity and stability of the concrete. The qualified concrete strength of the wall formwork demolition should be greater than 12MPa, which is to ensure that the strength of the concrete reaches a certain standard to ensure the quality and safety of the whole building.
In general, the sequence of formwork removal needs to follow certain rules, and the construction personnel need to have a certain level of technology and experience. In the process of demolition, special attention needs to be paid to ensure the safety and stability of the structure, so as to avoid adverse effects on the whole building due to demolition. The quality and safety of building construction can only be guaranteed if the prescribed demolition sequence and methods are strictly followed.