4 Repair Techniques

 


The following considerations must be taken into account and adhered to:

The size, location, and width of cracks are all determined.

Cracks are divided into structural and non-structural categories.


Cracks that have gone dormant:

Dormant cracks are caused by a one-time occurrence in the part that is unlikely to happen again. They keep their width constant and can be restored by filling them with a stiff material. Cracks that are active: Open and close as the structure is loaded, or owing to temperature and hydras changes in the concrete, rather than remaining constant in breadth. Cracks in the growth:


The fundamental cause of their formation, an increase in width, persists.


5 Different Uses:


Crack repair can be accomplished using the following methods:


The injection of resin


Routing and Sealing is a term used to describe the process of routing and sealing.


- Stitching


Externally imposed pressure

- Bonding

- Blanketing

- Overlays


a dry packing material

Vacuum impregnation is a type of impregnation in which a structure is impregna

Impregnation using polymers

There are six rehabilitations.

The success of the repair effort is contingent on determining the fundamental cause of the concrete structures' deterioration. It is not difficult to carry out repairs to increase the structure's strength and durability, hence extending its life. It is the process of restoring a structure to its previous service level, which has now been lost. Strengthening entails endowing the structure with a higher service level than that which was originally planned by modifying the structure, which does not necessarily include the damaged area. The steps listed below are commonly employed in the rehabilitation process.

As needed, provide sufficient support for the structural members.

Remove any concrete that is cracked, spalled, or loose.

Clean the steel reinforcement and exposed concrete surfaces.

If the loss in reinforcement is greater than 10%, provide additional reinforcing bars.

Protect the exposed/repaired surface with protective coatings.

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