Abstract:
A three storey RCC frame of an old overhead water tank in BITS Pilani campus had developed wide visible
cracks, rusting of steel reinforcement and concrete spalling conditions at many locations. The condition of these structures
was assessed by visual inspection, non-destructive testing (NDT) like rebound hammer, ultrasonic pulse velocities, rebar
locator etc. and laboratory tests, to ascertain their suitability for further use. Based on the results of the tests conducted RC
jacketing technique using anti corrosive agent, micro concrete and polymer modified mortar for retrofitting was suggested
and implemented. The NDT was conducted again after the completion of retrofitting of the structure. This case study
presents the use of standard and innovative repair materials, appropriate technology, workmanship, and quality control for
successful repair, strengthening and restoration of damaged structures
