Carrying out repairs of the pile surface in the splashing zone of bridge foundations of Zuari and Mondovi bridge in Karwar region of KRCL.

Application of Feo Vert An alkaline rust converting primer having a coverage of 6-8 1 Sqm per litre ( or other equivalent product) on the exposed reinforcement if any on the prepared pile surface after cleaning the surface with wire brush with all contractors consumables, materials, tools and plants, labour, protective aids, etc complete for all piles, Note :Measurement will be done for diameter of treated reinforcement including embedded portion of treated reinforcement.

Cleaning the pile surface above low tide level up to 600 mm below the pile cap bottom 2 level (approx, 1.0m) applying EPCO 1010 to seal Cavities if any and providing a coat of poly amide primer like Corroseal ZR or equivalent product which has excellent corrosion resistance from chemical and saline environments with all contractors consumables, materials tools and plants, labour, protective aids etc complete.

Providing coating the entire repaired pile surface (up to 600 mm below the pile cap)with IPNet- an inter-penetrating polymer Network concrete coating system or Similar product 3 which provides chemical resistance, weather resistance, Tensile strength, Flexibility, shear strength and hardness etc as three coats (primer, middle, and top coats) as per the prescription of Manufactures with all contractors consumables, materials tools and plants, labour protective aids etc complete Above/

Coating the exposed reinforcement ,new reinforcement with anti corrosive coating like 1 IPNET-RB or similar component after thoroughly de-rusting with wire brushes and cleaning to enhance durability with all contractors consumables, materials, tools and plants, labour, protective aids etc complete.

Supply of reinforcement bars of required diameter, cutting, to the required length bending tying as required, Anchoring in to the underside of pile cap concrete using u pins made of 2 stainless steel minimum 12 nos per pile cap, duly anchoring in to the hard concrete by vertical drilling from underside the pile cap, fixing with anchor fastener of Hilti make HIT-RE-500 or equlent duly curing as per manufactures specification etc complete with all contractorsconsumables materials tools and plants, labours protective aids etc complete.

Applying a bond coat on to the newly prepared surface to provide good adhesion to 3 the micro concrete in addition to have capability to transmitting high stress, possesses excellent water and alkali resistance like EPIBOND-21- LP/EL-MONOBOND or other similar product prior to rebuilding the lost concrete section with all contractors consumables, materials, tools and plants, labour, protective aids etc complete.

Re building the concrete section under pile cap/pile surface by shotcrete/guniting method using a shrinkage compensated single component micro concrete(M45 grade) in corporate with traversing type corrosion inhibitor like MOLITH-MC or Equivalent component of micro concrete 4 and average 75mm thickness of micro concrete with all contractor materials, tools, plants, labours, protective aids & boat for placing shotcrete/guniting unit, after micro concreting work level & match the existing pile cap bottom profile/pile surface and curing etc. Complete as per direction of Engineer in charge. Note:Applied each layer of microconcrete is covered by thin plastic wrapper to avoid entry of salty water and washout due to tidal wave on daily basis and continue up to completion of each pile work.

Providing and fixing perorated nipples of 12mm dia taper bottom with epoxy putty 5 including drilling of 14mm dia holes on vertical faces in inclined position to a depth of 100- 150mm into the cracks on pile caps/pile concrete as per requirement with all contractors consumables like epoxy putty, tools, plants, labour, protective aids etc

Injecting Low viscosity high molecular weight thermosett polymer like monopol or 6 equivalent compound which can penetrate in to the cracks while pouring or applying under pressure and provides excellent adhesion and chemical reaction in to the vertical and horizontal crack on the pile cap with all contractors consumable , materials,tools,plants,labous and protctive aids etc complete

Providing Scaffolding around the' piles at the pile cap location for making a working platform for the labours to carry out the work with all contractors consumables, materials, tools plants etc. Note : Rate including cost for all materials, fixing, removing with all lead and lift etc. complete Above/

Hiring of motor boat along with operator and safety items to reach men & materials to the work site and carry out the work at site with all contractor's labours, tools, plant & consumables etc. Above/

Supplying and applying fast setting plugging material similar to the property of 1 Sikagard 694F (1) inside the cavities and on the priphery of FRP sheet to make it watertight under water with all labours, materials, boat, tools and plants, consumables, equipment, scaffolding if any etc complete. Above/

Cutting liner/casing of concrete pile at a depth of 600mm or more from the pile cap bottom using suitable cutting equipment and removing the cut liner, cleaning the concrete surface 1 using portable water jets to remove all loose concrete, rust scale and deteriorated concrete etc If any, and making the surface is suitable for repair with micro concrete/ mortar with all contractors consumables, materials, tools, plants, manpower and protective aids etc and complete the work as per direction of Engineer in-charge.

Applying pre-packed microsilious admixed cement spray mortar/polymer modified mortar of Molith -SM/PMM or equivalent component of compressive strength 40 Mpa (28 days) for covering the pile surface or replacement of spalled concrete portion and it is to be applied by trowel 2 or low pressure wet spray process after wetting the substrate with clean water up to average thickness of 50m with all contractors consumables, materials, tools, plants, manpower , protective aids and curing etc, complete the work as per direction of Engineer in-charge. Note: Applied each layer of cement mortar is covered by thin plastic wrapper to avoid entry of salty water and washout due to tidal wave on daily basis and continue up to completion of each pile work.