Repair is the technical aspect of rehabilitation. It refers to the modification of a structure, partly or wholly which is damaged in appearance or serviceability.
The following factors to be considered repair of concrete structures:
The cause of damage
Type, shape and function of the structure
The capabilities and facilities available with builders
The availability of repair materials
1. Stages of concrete repair
Repair of concrete structures is carried out in the following stages:
Removal of damaged concrete
Pre treatment of surfaces and reinforcement
Application of repair material
Restoring the integrity of individual sections and strengthening of structure as a whole
2 Repair procedure
A repair procedure may be selected to accomplish on or more of the following objectives:
To increase strength or restore load carrying capacity
To restore or increase stiffens
To improve functional performance
To provide water tightness
To improve durability
To prevent access of corrosive material to reinforcement
3 Types and classification of repair Types of repair:
Cosmetic treatments on surface
Partial replacement of surface and subsurface material
Additional of reinforcements and bonding materials to strengthen the element
Total replacement of the structural element
Classification of repair : Repair reqirements
Superficial : Cement mortar bonding by trowelling
General : Non structural or minor structural ;restoring cover to rebars
Principal : Significant loss of concrete strength; shotcreting for slabs and beams, jacketing for columns etc
Major : Demolition and recasting required.
0 Response to "Structural Repair and Rehabilitation"
Post a Comment