If you accidentally cut off the steel bars in the floor slab during slotting, will there be potentia

Breaking the reinforcement at the bottom of the beam has caused this one to lose its load-bearing capacity. The reason why there has not been a serious consequence of the collapse of the house is entirely due to the fact that the house will have a certain margin in the design and the overall cast-in-place practice of the floor slab. The serious consequences are even more responsibilities that ordinary people simply cannot bear.

Its severity is still almost, if it is a beam with no wall at the bottom of the beam and a large span, it is necessary to take the method of repairing and remedy.

The iron plate with a thickness of more than 6 mm is clamped up, and the iron plate is made into a pinny-shaped, which is as wide as the beam and the same height, and the iron plate and the beam are drilled, with a hole every 20 cm, and the frame beam.

It is particularly important in the structural safety, if the main reinforcement under the beam is broken, especially the large diameter and the number of multiple roots, temporary support and reinforcement measures should be taken, and at the same time, the bottom reinforcement of the broken beam has made this one lose the bearing capacity. The reason why there has not been a serious consequence of the collapse of the house is entirely due to the fact that the house will have a certain margin in the design and the overall cast-in-place practice of the floor slab.

<> pick up the beam. The bottom of the pick beam is not stressed, which can not be a big deal. General reinforcement measures are sufficient.

The beam is basically broken. With more than 30 floors, it's really scary to live in it. Generally, after the beam reinforcement is broken, the beam reinforcement reinforcement surface is not much rust on the concrete strength.

It will not have any effect, but if there is a large amount of rust, it will affect the adhesion between the steel bar and the concrete, and it is generally necessary to remove the rust. Everyone says that the service life of the house is not only the factor of cement, but it also has a lot to do with this reason. This is also the fact that although the concrete looks very tight, the steel bars will rust.

However, the rust of the steel bar will expand the volume, and slowly push the concrete component out of a larger joint, and the vicious circle begins, and finally the component is destroyed and the concrete is segregated.

and the case of the honeycomb surface, or the concrete protective layer.

is destroyed, then the oxygen, acidic gases and water molecules in the atmosphere.

It will oxidize with the steel bar through the void.

This in turn causes the steel bars to corrode. This is not a trivial matter, and it must be taken seriously.

I think that if the steel bar in the floor slab is accidentally cut during slotting, there will be a great safety hazard, and we should remedy it in time, if it is not remedied in time, the subsequent harm will be more serious.

Yes. Because after the steel bar is broken, it cannot play a good fixing role, so there will be potential safety hazards.

Yes. This is a major safety hazard and is likely to result in these slabs becoming unsolid.

If you accidentally cut off the steel bars in the floor slab during slotting, will there be potential safety hazards?

Kiss the orange! Hello, glad for your question! If you accidentally cut off the steel bars in the floor slab during slotting, will there be potential safety hazards? ：

Influential. Roof slotting is generally carried out in the rebar binding stage, and the rebar around the trough is bypassed, but will not be cut. This is because the concrete sails in the roof and the steel bars in the Honghuai are all tensile roles.

If the slotting cuts off the steel bar in the later stage, the tensile effect fails, and there is no concrete support at the cut-off place, which will inevitably cause the floor slabs on both sides of the groove to sink, resulting in the overall knot damage, and there are serious safety hazards.

A cast-in-place floor slab leak is definitely unqualified.

1) For the destructive cracks caused by the unqualified stability of cement in the concrete or the chemical reaction caused by the mixing of different varieties of cement, it must be thoroughly treated, that is, the concrete must be knocked off and re-poured.

2) For the cracks caused by the force, targeted reinforcement measures can be taken according to the reasons for the cracks. If the cracks in the floor slab that have affected the structural safety are washed, in addition to being washed along the joints into a V-shaped groove, and the epoxy resin liquid is poured into the joints with pressure to close them, the floor slabs should be reinforced with measures such as sticky flat steel or carbon fiber cloth. When reinforced with carbon fiber cloth, for a single crack, in addition to pasting along the seam, the outer field should be pasted at the distance between the cloth and the width of the cloth in the direction perpendicular to the seam; The multiple seams that cross each other should be pasted in a tic-tac-toe shape, and the spacing should be the same as the width of the cloth.

3) The non-stressed cracks caused by temperature, concrete shrinkage, construction and other factors are treated as follows:

1. For the cracks on the surface of the general concrete floor slab, the cracks can be cleaned first, and then the joints can be filled with epoxy resin liquid or sealed with surface painting after drying. If cracks are found before final setting during construction, they can be treated with plastering.

2. For the treatment of other general cracks (between widths), the construction sequence is: after cleaning the plate joints, wipe the joints with 1:2 or 1:1 cement mortar, flatten and cure, and close to restore the appearance.

3. When the crack (the width is greater than the larger, the figure-eight groove should be chiseled along the crack, rinsed and smoothed with 1:2 cement mortar, or epoxy cement can be used to make up for it. (Limited to seams with a small number of seams and non-length, penetrating seams).

4. When the crack area of the floor slab is large, the static load test should be carried out on the floor slab to test its structural safety, and a layer of steel mesh can be added to the floor slab if necessary to improve the integrity of the slab. Or close the board surface with epoxy resin liquid filling (a layer of waterproofing is OK), and paste it into a tic-tac-toe shape with carbon fiber cloth at the bottom of the board, and the spacing is the same as the width of the cloth.

5. For the dangerous structural cracks with long length and penetration, the treatment method for the crack width greater than is as follows: in addition to digging into a V-shaped groove along the joint to rinse it, pouring the epoxy resin liquid into the joint with pressure to close it, and reinforcing the floor slab with measures such as sticky flat steel or carbon fiber cloth. When reinforced with carbon fiber cloth, for a single crack, in addition to pasting along the seam, it is necessary to stick the cloth width and sticking the base stick in the perpendicular to the seam direction; The multiple seams that cross each other should be pasted in a tic-tac-toe shape, and the spacing should be the same as the width of the cloth.

The width of the cloth is about 300mm).

6. When the number of through-length, through-length and non-through-length and through-through cracks is large, only the vertical and horizontal sides of the bottom of the plate are pasted. The above hopes that when you consider how to deal with the leakage of cast-in-place floor slabs, there can be a guiding role.

I have to look carefully at the question before I can answer it.

1.Planting reinforcement can plant brick walls.

2.The brick wall groove is quietly prepared to be 120 thick, and it is said that the wall is half thick (the safety section of the groove is missing) 3The reinforcement is linked with the beam reinforcement.

4.The reinforcement through the ring beam (it is estimated that the ring beam should be circled) with planting reinforcement (the quality of the planting reinforcement is difficult to guarantee) 5To lap as far as possible (lap in 35d, and the same part of the lap should be wrong).