Repair of Surface of 3200 mm dia RCC pipeline externally using chemical agents / compounds on select locations between chainages Teela Morh to Gokulpuri Campus

Repair of Surface of 3200 mm dia RCC pipeline externally using chemical agents / compounds

Chipping of unsound/weak concrete material (like plaster, loose concrete, oil, rust, dust, and other impurities) from RCC surface with manual Chisel and or by standard power-driven percussion type 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 al lead and lifts al complete as per the direction of Engineer-In-Charge

Removing all existing unsound/loose material like plaster, loose concrete, loose particle, oil, dust and other impurities etc manually by chisel and hammer from RCC conduit surface. Making RCC surface thoroughly cleaned using wire brush and water including disposal of debris outside of pipeline.

Drilling and fixing injection packers in RC members including, Drilling Holes: Drilling holes in structural members at intervals as per the recommendation of the engineer in charge. Cleaning of holes: Clean the holes with an air blower before fixing nozzles. Fixing of Packers: Insert 12 mm dia., 50~75 mm long injection packers in cleaned holes with moisture insensitive epoxy resin-based putty or equivalent. Cutting of Packers: Cut the Packers by wheel after grouting completion without damaging structural elements. Patching Hole:- After cutting off the packer we patch the hole on epoxy putty.

Supply and application of single component, Polyurethane Injection foam based system for wet conditions and temporary sealing, which cures to a dense flexible foam with a fine cellular structure. Minimum Product Requirements: Viscosity cps 500-1300 at 23°C

Application of rust remover cum passivator (Restolene) on steel bars and also application polymer (Build Crete) in two coats on steel bars (sika rustoff -100) or its equivalent completion as per the direction of the engineer. Consumption: 0.150 kg/m2 per coat

Supply and application of two coats of sodium silicate-based quick setting cement mortar to prevent leakage in the place system. Similar Product Make: Sikafloor® curehard-24 or its equivalent completion as per the direction of the engineer in charge. Consumption: 0.25 kg/m2 per coat

Providing and applying the epoxy-based bonding agent on the dry and prepared surface. Product: Sikadur®-32 LP or its equivalent Consumption: 0.45kg/m2 Product requirements: mixed density: 1.70kg/ltr; shear strength > 10MPa.

Providing, mixing and applying polymer modified cement concrete/mortar at an average thickness of 10-12 mm in multilayers, including making smooth surface with wooden tools etc complete as per specification and directions of engineer in charge. Similar Product Make: SikaLatex®-SBR or its equivalent Consumption: 10% by weight of cement Product: specific gravity- 1.02, mixing ratio -1:5 (SikaLatex: water) other material as per grade, density - 2300 kg/m3

Providing, mixing, and applying Latex polymer-modified cement concrete in the ratio (1:1.5:3) (with polystyrene-based epoxy system, and furane system to be used as per the direction of the manufacturer, including making smooth surfaces with wooden tools, etc. complete as per specification and directions of the engineer in charge. Similar Product Make: Sika Latex®-SBR or its equivalent Consumption: 10% by weight of cement Product: specific gravity- 1.02, mixing ratio -1:5 (Sika Latex: water) other material as per grade, density - 2300 kg/m3

Providing, mixing, and applying two coats of protective epoxy coating over finished and dry surfaces. Similar Product Make: Sikagard®-67 or its equivalent Consumption: 0.25 kg/m2 per coat Product requirements: mixed density: 1.22kg/ltr

Finishing / Painting of the external surface of wals with premium acrylic smooth exterior paint (asian apex Ultima paint or its equivalent) of approved shade to give an even shade in two coats after applying priming coat of cement primer including all material, labour T & P etc.

Providing scaffolding for different type of repairing works for viaduct/conduit pipe line

CLEANING OF BIG JHUND AND SNATCHING OUT OF PLANTS FROM TEELA MORH TO TAIL REACH

Cleaning of big jhund, bush, wood plants upto 3.0m height including uprooting of rank vegetations etc. and including disposal of same within 250m distance.

Labour cess@1%