COLUMN STRENGTHENING PROCESS
CONCRETE JACKETING
- Ø Involves addition of a thick layer of Reinforced Concrete(RC) in the form of a jacket, using longitudinal reinforcement and transverse ties.
- Ø Additional concrete and reinforcement contribute to strength increase.
- Ø Minimum allowable thickness of jacket = 100 mm.
- Ø The sizes of the sections are increased and the free available usable space becomes less.
- Ø Huge dead mass is added.
- Ø The stiffness of the system is highly increased.
- Ø Requires adequate doweling to the existing column.
- Ø Longitudinal bars need to be anchored to the foundation and should be continuous through the slab.
- Ø Requires drilling of holes in existing column, slab, beams and footings.
- Ø Increase in size, weight and stiffness of the column.
- Ø Placement of ties in beam column joints is not practically feasible.
- Ø The speed of implementation is slow.
- WORK PROCESS OF COLUMN STRENGTHENING









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