Structural strengthening is the process of upgrading structures to improve performance under existing loads or to increase the strength of structural members to carry additional loads. Strengthening of concrete structures must be considered when the existing structure deteriorates or any alteration to the structure has to be made due to which the structure may fail to serve its purpose.
Jacketing is the process whereby a section of an existing structural member is restored to its original dimensions or increased in size by encasement using suitable materials. A steel reinforcement cage or composite material wrap can be constructed around the damaged section onto which shotcrete or cast-in- place concrete is placed.
GUNITING & SHOTCRETING
Guniting is the most effective process of repairing concrete work which has been damaged due to inferior work or other reasons. It is also used for providing an impervious layer. The gunite is a mixture of cement and sand, the usual proportion being 1:3. A cement gun is used to deposit this mixture on the concrete surface under a pressure of about 20 to 30 N/cm2.
CARBON & E-GLASS WRAPPING
The wrapping method is used for Rehabilitation and retrofitting of Structures and structural strengthening old/weak RCC members. In recent years, the use of externally bonded fiber-reinforced polymers (FRP) has become increasingly popular for civil infrastructure applications. Glass fiber strengthening when used in multiple layers increases the ductility and strength up-to great extent for Rehabilitation of Structures. For fiber wrapping concrete columns glass fiber is more economical. Rehabilitation and retrofitting of Structures to improve resistance to seismic movements, Glass fiber reinforced polymer or GFRP Wrap is an excellent solution. Glass fiber strengthening has other advantages like it is light weight and is available in any length.
POLYMER MORTAR TREATMENTS
Strength & Durability