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Retrofitting of Reinforced Cement Concrete (RCC) structures involves various methods to enhance the strength, durability, and overall performance of existing buildings

Concrete Jacketing

Description: Adding a layer of new concrete around the existing columns, beams, or walls.
Purpose: Increases cross–sectional area and improves load–carrying capacity.
Application: Suitable for strengthening columns and beams.

Steel Jacketing

Description: Wrapping steel plates or jackets around structural elements.
Purpose: Enhances axial and shear strength.
Application: Often used for columns and beams.

Fiber Reinforced Polymer (FRP) Wrapping

Description: Using FRP composites to wrap structural elements.
Purpose: Provides additional tensile strength and improves seismic performance.
Application: Useful for columns, beams, and slabs.

External Post-Tensioning

Description: Applying external tendons or cables to induce compressive forces in structural elements.
Purpose: Reduces tensile stresses and improves flexural capacity.
Application: Common for bridges, large spans, and slabs.

Base Isolation

Description: Installing isolation devices like bearings or dampers at the foundation level.
Purpose: Reduces seismic forces transmitted to the structure.
Application: Effective for earthquake-prone areas.

Epoxy Injection

Description: Injecting epoxy resin into cracks.
Purpose: Provides additional tensile strength and improves seismic performance.
Application: Useful for columns, beams, and slabs.

Replacing Existing structural members

Description: Replacing the existing structural members when olid not in a position to perform
Purpose: New structural members will be placed in old position
Application: Suitable for columns and beams strengthening.

Epoxy Injection

Description: Injecting epoxy resin into cracks.
Purpose: Provides additional tensile strength and improves seismic performance.
Application: Useful for columns, beams, and slabs.

Adding Shear Walls

Description: Constructing new shear walls or strengthening existing ones.
Purpose: Increases lateral load resistance.
Application: Suitable for improving the seismic performance of buildings.

Enlarging Foundations

Description: Expanding the size of the foundation elements.
Purpose: Enhances load-carrying capacity and stability.
Application: Often necessary for buildings undergoing significant load increases.

Strengthening with Steel Braces

Description: Adding steel braces to existing frames.
Purpose: Provides additional lateral stiffness and strength.
Application: Effective in improving seismic resistance.

Carbon Fiber Reinforced Polymer (CFRP) Sheets

Description: Bonding CFRP sheets to structural elements.
Purpose: Increases flexural and shear capacity.
Application: Useful for beams, slabs, and columns.

Reinforcement Addition

Description: Adding extra steel reinforcement to existing elements.
Purpose: Enhances strength and ductility.
Application: Common for beams, columns, and slabs.

Replacing Existing structural members

Description: Replacing the existing structural members when olid not in a position to perform
Purpose: New structural members will be placed in old position
Application: Suitable for columns and beams strengthening.

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