Repair of Joints of 3200 mm dia RC pipe externally using chemical agents / compounds on select locations between chainages 00 km to 13.50 km

Treatment of Joints

Excavation in Foundation in all type of soil including lift upto 1.50 m or above as required and lead upto 50 m filling watering and ramming of excavated eartch into the trenches and disposal of surplus earth upto a distance of 50 m from the centre of foundation.

Dewatering from ditches, pits and trenches around 3200 mm Dia RC pipeline including hiring of pump set of. diesel operator etc. complete & suction pipe & delivery etc. complete.

Hiring of generator 25 KW at site for 8 hours including supply of diesel, Mobil oil, generator operator and cartage up to site.

Dismantling of old loose plaster and take out mestic sheet/bitumen/spun yarn or any other unwanted material from the joints and clean the joints completely with soft brush and water by taking out waste material and disposal of malba / debris within 100m distance including all labour, T&P and scaffolding etc. complete.

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 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

Supply and application of 2 components, elastic, low viscous, solvent-free, Polyurethane Injection resin based system for permanent sealing, that does not need the presence of water for hardening reaction Product Requirements: The viscosity of the mixture < 100 mPa*s (at +20°C) Capable of penetrating cracks>0.2mm wide with a CE Marking (European Conformity) -> Conformance label that the product is approved to the essential requirements and under market surveillance

Repairing the edges of the joint (in case of weak concrete at the joint edge) and also configuring the joint width (in case of expansion joints with irregular width more than the width of the chosen Sikadur Combiflex Tape width) with epoxy repair mortar Sikadur 31 and Sikadur 41/ Sika Latex or its equivalent.

To insert spunyarn and lead wool into the gap of joints including all materials, scaffolding labour, T&P etc. complete.

Filling the joints with Polystyrene baker rod of the size next higher to the joint gap and apply Polyurethane based sealant in the expension joint up to a depth equal to not less than 1/2 the width of the joint including insert of bitumen impregnated board as filling material,T&P etc. complete.

Labour cess@1%