Details: chipping of unsound/weak concrete material from slabs, beams, columns etc. with manual chisel and/ or by standard power driven percussion type or of approved make including tapering of all edges, making square shoulders of cavities including cleaning the exposed concrete surface and reinforcement with wire brushes etc. and disposal of debris for all lead and lifts all complete as per direction of engineer-in-charge. 50mm thick 75mm thick cleaning of exposed concrete surface of sticking material including loose and foreign material by sand blasting with coarse sand followed by and including cleaning with oil free air blast as per direction of engineer in charge. providing and applying of anticorrosive treatment to exposed structural reinforcement by two coats of ipnet rb or equivalent with time interval of minimum 8 -10 hours between each coat after the application of two coats of alkaline rust converting primer. the application shall be done by brush or spray after cleaning existing re
Sector: PWD