Damaged Concentrate repair due to corrosion and rust of iron
Reinforcement erosion is the decomposition process of iron. This is caused by a chemical reaction in concrete caused by an internal influence or by environmental influences. During deterioration, the rebar degrades, swells , and size increases which can cause the concrete to crack or splinter, reducing the concrete’s service life and use. Thus, corrosion needs to be repaired as soon as it appears in the concrete. Corrosion is like cancer, but in construction, it has proven to be costly to restore and a danger to the stability of facilities, if not taken care of in the initial stages.
Assessment of the condition of concrete damaged by reinforcement rust
At the time of inspecting the damaged concrete, when the presence of nesting, cracking, or flaking of the concrete cover or traces of red/brown color near the cracks, this indicates the presence of corrosion in the concrete reinforcement.
Assess the extent of damage by hitting a steel hammer or heavy metal object at the site of the cracks/corrosion. Removing damaged concrete (loose concrete) to the extent that the hammer sound reaches a resonant sound. Although the concrete may sound distinctly ringing, examine the damaged area again carefully and remove the concrete to the surface, where the reinforcement is found as well as it was laid at the time of construction. That is, without any layer of rust/corrosion on it.
Is there a need to add/replace the bar?
In some circumstances, where the corroded rebar has already lost its cross-sectional area in a significant manner due to corrosion, it is necessary to replace this steel with a new or additional rebar area.
If the iron is slightly corroded, meaning it has not started to deteriorate, remove the rust by applying a rust remover or using mechanical brushes. In this case, there is no need to replace the rebar as long as it provides the required or safe reinforcing space.
Sometimes, corrosion damage to the reinforcement is not visible to the naked eye. In such circumstances, it is possible to use a specialized laboratory to examine concrete sections using approved methods and tools.
Techniques for repair and restoration of concrete damaged by corrosion of reinforcement
The repair technique should be chosen so that the repair material remains stable enough to last for a long time, and the time required to complete the repair work should be minimal.
Repairing and restoring damaged, damaged concrete that has been corroded is not a difficult task, but of course, it is a task that requires good skill. Therefore, one needs to know the exact and effective methods of repair. Before you begin repairing these faulty concrete parts.
There are some simple steps to follow when Concentrate repair:
- Removing all loose or cracked concrete parts.
- Remove rust from the skewers.
- Coating the reinforcement with anti-corrosion paint.
- Apply a bonding agent to the old concrete (the material that binds old concrete to new).
- Pouring concrete, applying modified mortar, using extruded concrete, etc.
Source: wikipedia.org/wiki/Reinforced_concrete
Read More: buildineg.com/public/blog/what-is-a-concrete-jacketing-of-column/
