Tender For Rehabilitation Of Damaged Concrete Areas In Rd Pump Room, Underground Substations & Tunnels In Rd & Bd
Tender Value
39.98 Lakhs
Estimated cost
Bid Submission
22 Sep 2026
21 days left
EMD
80000
Bank guarantee accepted
Document Fee
Ref. Documents
Non-refundable
Tender Type
Online
Tender Overview
Organization
Tender ID
Competition Type
NCB
Bidding Type
Tender
Location / State
Ernakulam → Kerala
EMD Exemption
Not Available
Quantity
Not Available
Website
Contact Person
Address
Project Description
Tender for Rehabilitation Of Damaged Concrete Areas In Rd Pump Room, Underground Substations & Tunnels In Rd & Bd
BOQ
| Sl. No. | Item Description |
| 1 | Demolishing and chipping of unsound/ weak concrete materials of beams, columns, slabs, walls etc. to a depth about 20mm behind the existing corroded/ damaged reinforcing bars in RCC manually using chisel or hammer/ by mechanical means using concrete breaker machine in low vibration mode or pneumatic Chisel, cutting the perimeter of the damaged area to a minimum depth of 10 mm using appropriate cutter, removing all damaged/ loose particles, loose plasters, surface preparation of concrete using wire brush/ scrapper to completely remove dust, debris, unwanted particles etc., complete including disposing the debris up to a lead of 5 kilometre, stacking serviceable and unserviceable material separately including cutting reinforcement bars if any etc. complete all as directed by the Engineer-in-charge. |
| 2 | 75mm average thickness |
| 3 | 50mm average thickness |
| 4 | Cleaning of rust from the reinforcing bars to give it a total rust free steel surface by using alkaline chemical rust remover of approved make with paint brush and removing loose particles after 24 hours of its application with wire brush and thoroughly washing with water and allowing it to dry. The rate quoted shall be inclusive of cost of all materials, consumables, all labour, hire charges of tools and other incidentals etc. complete all as per the directions of Engineer-in-charge. |
| 5 | Bars upto 12 mm diameter |
| 6 | Bars above 12 mm diameter |
| 7 | Applying coating on steel reinforcement with two coats of anti-corrosive primer. The rate quoted shall be inclusive of cost of all materials, consumables, all labour, hire charges of tools and other incidentals etc. complete all as per the directions of Engineer-in-charge. |
| 8 | Bars upto 12 mm diameter |
| 9 | Bars above 12 mm diameter |
| 10 | Supply & Fabrication of tor steel reinforcement with TMT bars (Fe 500D or more) as per site requirement such as L-shaped shear connector, stirrups in the form of U-shaped bars, additional reinforcement of required length, diameter etc. including straightening, cutting, bending, placing in position, binding with G.I. wire of 18 gauge etc. complete in all respects. Additional bars shall be provided wherever the diameter of the existing corroded reinforcement needs to be replaced after cutting the required bars, as main reinforcement to the required length with proper development length, etc. complete all as per site requirement and directions of Engineer-in-charge. |
| 11 | Supplying and fixing of GI weld mesh of 100mm x 100mm x 2.5mm size or higher, wire mesh firmly anchored to the concrete surface with shear connectors over the area to be plastered including the cost of materials, labour, tool & plants etc. complete as directed by the Engineer-in-charge. (Supply & fixing of shear connectors, scaffolding shall be paid separately). |
| 12 | Fixing of U-bar, additional straight bars, shear connectors (L shaped) using adhesive chemical, in line and level as per site requirements after drilling of suitable holes of following diameter and depths with power driven drill machine and fixing the rebars using epoxy chemical anchor resin of approved make after cleaning by blowing compressed air. Fill the drilled and cleaned holes to a minimum depth of 1/3rd of the hole with the anchoring adhesive. Make sure that the resin has reached till the end of the hole. At this stage push the shear connector gently in to the hole and finish the excess resin which comes out of the hole and allow the shear connectors not to be disturbed for minimum 20 minutes - complete. The rate shall include the cost of all materials and operations including drilling suitable holes, cleaning the holes using compressed air, machineries and other incidentals etc. complete as per the direction of Engineer-in-charge. (The cost of supply of reinforcement shall be paid separately.) |
| 13 | Upto and including 12mm dia bar, 100 to 200 mm depth |
| 14 | Above 12mm upto 20mm dia bar, 100 to 200 mm depth |
| 15 | Providing, mixing and applying epoxy resin bonding agent over the chipped portion of old concrete surface prior to placing the new concrete as per the manufactures specification including cleaning the surface, cost all material, labour etc. complete as per site requirement and directions of Engineer-in-charge. |
| 16 | Supply of dual shrinkage compensated fibre reinforced polymer modified repair mortar of approved make. |
| 17 | Providing, mixing and applying 50 mm average thickness dual shrinkage compensated fibre reinforced polymer modified repair mortar on the prepared surface in 3 layers on site to enable completion of pouring in a continuous operation. Cut the edges of the repair vertically to a minimum depth of 5 mm. Water powder ratio shall be strictly maintained as per manufacturer's recommendation. Work to be progressed continuously without any gap. Curing to be done as per regular practice with water. The rate quoted shall include cost of all labour for mixing, laying, consolidating, curing, tools & plants, consumables, costs of centering and shuttering at edges and corners, other incidentals etc. complete all as directed by the Engineer-in-charge. Payment under this item shall be made only after proper wet curing and surface has been satisfactorily evaluated by sounding/ tapping with a blunt metal instrument. (The Cost for repair mortar shall be paid separately.) |
| 18 | Providing and laying Ready mix, Non shrink, free flowing, cementitious micro-concrete with a minimum compressive strength of 50N/mm2, of approved make. Micro-concrete shall be mixed with 6mm aggregate on site at 50% weight of powder to enable completion of pouring in a continuous operation. Water-powder ratio shall be strictly maintained as per manufacturer's recommendation. Work to be progressed continuously without any gap. Curing to be done as per regular practice with water. The rate quoted shall include cost and conveyance of all materials, labour for mixing, laying, consolidating, curing etc. complete all as directed by the Engineer-in-charge. |
| 19 | Supply and fixing of slurry tight formwork which should not deform and leak due to pressure of micro-concrete. Provision should be made for a suitable feed hopper for pouring concrete. The form work should be coated with the mould release agent prior to final fixing in position. Proper supporting arrangements to be made for keeping the shutter in correct line and length etc., complete all as directed by the Engineer-in-charge. The rate quoted shall include cost and conveyance of all materials, labour for laying, consumables etc. complete all as directed by the Engineer-in-charge. |
| 20 | Providing and inserting 12mm dia. galvanised steel injection nipple in honey comb area and along crack line including drilling of holes of required diameter (20mm to 30mm) up to depth from 30mm to 80mm or half the thickness of member (whichever is less), at required spacing but not exceeding the thickness of member or 300mm. Making grooves of size 12mmx12mm along the crack line and making the hole & crack dust free by blowing compressed air and then washing with water and sealing the distance between injection nipple with adhesive chemical of approved make and allow it to cure. The rate quoted shall be inclusive of cost of all materials, hire charges of all machineries, labour etc. complete all as directed by the Engineer-in-charge. |
| 21 | Injection Grouting: Providing and injecting following grout into cracks/honey-comb area of concrete/masonry by suitable gun/pump at required pressure including cutting of nipples after curing etc. complete as per directions of Engineer-in-Charge. The rate quoted shall be inclusive of cost of all materials, hire charges of all machineries, labour etc. complete excluding the cost & fixing of packers which will be measured and paid in a separate item. (The payment shall be made on the basis of actual weight of approved grout injected). |
| 22 | Injecting two component high strength epoxy resin grout/ polyurethane grout in the fixed steel packer, in proportion recommended by the manufacturer, hydrophobic, tough, rigid and high strength human friendly product |
| 23 | Injecting Low-Viscosity Epoxy Resin in the fixed steel packer, under controlled pressure using suitable injection pump, to fill cracks and voids and restore structural integrity |
| 24 | Supplying and erection of CSL approved staging for following heights from floor level. The rate shall include supply of staging materials, labour for transporting staging materials from stack yard, erecting at site and its removal after completion of work etc. all as directed by the Engineer in Charge. |
| 25 | Built up/ tubular scaffolding having width of 1.25m with steel board up to corresponding levels including support scaffolding up to 2.5m |
| 26 | Built up/ tubular scaffolding having width of 1.25m with steel board up to corresponding levels including support scaffolding - Above 2.5m Up to 5m |
| 27 | Filling the prepared expansion joints 20mmx10mm with fuel-resistant, two-component polysulphide joint sealant, applied after proper cleaning, priming of the joint surfaces and backer rod placement wherever required, ensuring a smooth and uniform finish, all complete as directed by the Engineer- in- charge. |
| 28 | Providing and applying a flexible two-component, hand-applied, rapid curing hybrid polyurea coating system designed for waterproofing and protection. The product combines the advantages of a seamless coating with high durability, excellent abrasion resistance and long life cycle performance. Polyurea is to be applied over a suitable primer as per manufacturer’s specifications. Primers shall be applied at a coverage of approximately 0.25 kg/m² for concrete and 0.15 kg/m² for steel, using roller or brush and allowed to become touch-dry before application of the polyurea coating.Polyurea coating shall be applied in two coats to achieve a minimum DFT of 1.5 mm. Application shall be by roller, brush, trowel or squeegee, followed by a spiked roller to release entrapped air. For vertical applications, Polyurea Thickener shall be added to Part A ISO before mixing with Part B AMINE. The coating shall extend a minimum of 300 mm above finished floor level at terminations and be sealed in a groove of 20 mm × 10 mm flushed with polymer-modified mortar as per vendor recommendations. Where required, apply a 200 gsm non-woven geotextile membrane over the cured polyurea coating. Please Enable Macros to View BoQ information |
AI Tender Summary
Tender Timeline
Sep 01, 2026
11:30 IST
Tender Published
Tender notice published.
TodaySep 22, 2026
17:00 IST
Bid Submission Deadline
Online submission via eProcurement portal.
Upcoming · 21 daysSep 23, 2026
Bid Opening Date
Technical bids will be opened and evaluated.
Upcoming · 22 daysTender Documents
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