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POST TENSIONING IN REHABILITATION OF STRUCTURES

POST TENSIONING IN REHABILITATION OF STRUCTURES Post tensioning has become very popular these days sensing the advantages it provides. Even small structures of G+2 are using post tensioning these days. The application of post tensioning has increased and it is well being ...

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REPAIRING OF OFF-CENTRE FOOTINGS

Fixes for Misplaced Footings It is sometime hard to position footings in the trench, so contractors often see walls that are not in the center of the footing (Figure 1). The foundation wall has to be located correctly to support ...

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ROUTING AND SEALING OF CONCRETE CRACKS

Routing and sealing of Concrete Cracks Routing and sealing of cracks can be used for dormant cracks not involving the restoration of tensile strength. In this method the crack is enlarged along its exposed face to form a V-shaped groove up ...

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SURFACE PREPARATION FOR CONCRETE REPAIR

Concrete Surface Preparation for RepairAll the success of a concrete repair work depends on the surface preparation. Similarly, repairs to reinforced concrete must include proper preparation of the reinforcing steel to develop a bond with the new concrete. Surface preparation ...

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OVERLAYS IN CONCRETE CRACK REPAIR

Overlays in Concrete Crack RepairOverlays are surface depositions of 6 mm or greater in thickness that can be bonded, partially bonded, or unbonded to the surface of the concrete. The material of overlay may be polymer concrete, Portland cement concrete, ...

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INTERIOR GROUTING

Interior Grouting / Cement GroutingFor interior grouting, holes of 25 mm or larger diameter are drilled at an angle to intersect the cracks, joints or voids at desired depth from the surface or close to the bottom of the void. ...

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INJECTION GROUTING /GROUTING FROM SURFACE

Injection Grouting /Grouting From SurfaceInjection grouting is usually carried out from the surface and is the common method for filling cracks, open joints, and interior voids with a material that cures in place to produce the desired results. Besides ...

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STRUCTURE REPAIR WITH CAST-IN-PLACE CONVENTIONAL CONCRETE

Structure Repair with Cast-In-Place Conventional ConcreteThe most frequently used and the most economical method of repair is the replacement of defective concrete with new conventionally placed concrete. A repair made with conventional concrete may deteriorate again due to reasons of ...

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