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| 1 | Chipping the RCC surface and cleaning the rusted reinforcement and exposed surface by wire brush, mechanical device or any other established method and applying rust removing solution of approved make and quality with cotton waste swab to reinforcement and allowing to dry the same for 24 hours, brushing off loose particles and applying first coat of Rust preventive coating of polymer and cement slurry in approved proportion with soft brush without adding water including applying another coat of Rust preventing after 4 hours air curing for 48 hours etc including scaffolding etc complete. (as directed by engineer incharge)(Rates excluding GST) |
| 2 | Removing loose rust from the reinforcement bars by wire brushing, light hammering etc. and applying sulphate and chloride free inorganic single component rust remover Rusticide as approved by Engineer in charge conforming to IS 9077. The rusted surface shall become blackish non rusted colour. After 24 hours of application of rust remover, loose particles shall be removed by brush. Apply one more coat of Rusticide. Apply bonding coat slurry of high performance acrylic polymer - Methyl 2-methylpropenoate copolymer with another enoate as approved by Engineer in charge on entire surface. Mix 1 Kilogram of acrylic polymer with 0.5 Kilogram of cement. Finish it with ready to use repair polymer modified mortar based on special cements, formaldehyde based polymer with thixotropy modifying agents as approved by Engineer in charge (The Polymer Modified Mortar (PMM) should attain min. compressive strength of 20 N/mm2 in 1 day and 30 N/mm2 in 7 days) by adding 13 - 16% water by weight of polymer modified mortar for treatment to the damaged RCC members. Add 1 Kilogram of Migrating Corrosion Inhibiting Admixture as approved by Engineer in charge per 25 Kilogram bag of polymer modified mortar. After mixing polymer modified mortar, it can be trowel applied or sprayed. When applying by hand, polymer modified mortar must be forced tightly into the substrate to ensure complete contact with the substrate. (If scaffolding is required, same shall be provided and will be paid under relevant item) (15-30 mm thickness at a time). (Rates excluding GST) |
| 3 | Galvanic Protection of Reinforcement in concrete: Providing and fixing zinc based galvanic anodes to the reinforcement. The anode shall be connected to the reinforcement steel by connectors provided with the anode application area is at the junction of repair. One anode per meter including tying to the bar etc. complete. (Rates excluding GST) |
| 4 | Providing and injecting epoxy grout including structuring of cracks in the body of slab girder, fixing inlet tube arrangement including cost of materials, machinery required for the work labour charges etc. (2 Kilogram of grout is considered per hole). (Rates excluding GST |
| 5 | Providing and applying required coats of a water based Evercrete Deep Penetrating Sealer (DPS) on cement concrete surface like roads, beams, and columns, plastered walls, basements, roofs, potable water tanks etc to react with cement and to penetrate concrete structure thereby making it resistant to chemicals / chlorides water to make it dust proof and to act as a water resistant at the same time which Strengthens the treated surface and reduce the curing period etc complete.(Rates excluding GST) |
| 6 | Providing and applying well mixed polymer cement slurry in ratio 1:2 over well soaked but surface dry concrete and steel rebar for adhesion of fresh cement and sand mortar as per specification as directed etc. complete. (item includes use of polymers like sikalatex or similar materials of relevant specification and scaffolding for height 8 to 10 meter)(Rates excluding GST) |
| 7 | Providing and Applying ACPRS PLCR SYSTEM PRIMER followed by ACPRS PLCR SYSTEM finish coat to the internal surface having two component system non toxic, solvent free, low VOC, safe for contact of potable water and food stuff when applied on exposed concrete / steel surfaces. Manufacturer should have the Dakks certification as well as ISO 9001:2015 accredited for manufacturing and formulation.(Rates Excluding GST) |
| 8 | Providing and casting in situ C .C. of trap / granite/ quartzite / gneiss metal of approved quality for RCC works as per detailed drawings and designs or as directed gneiss metal of approved quality for RCC works as per detailed drawings and designs or as directed by Engineer-in-charge including normal dewatering, centering, form work, compaction, finishing the formed surfaces with C.M. 1:3 of sufficient minimum thickness to give a smooth and even surface wherever necessary or roughening if special finish is to be provided and curing, etc. complete. (By weigh batching and mix design for M-250 and M-300 only. Use of L&T, A.C.C., Ambuja, Birla Gold, Manikgad, Rajashree, etc. cement is permitted.) (Excluding M.S. or Tor reinforcement) Please Enable Macros to View BoQ information |
