CERTAIN MISC PETTY REPAIRS OF DAY TO DAY COMPLAINTS TO VARIOUS MD AND OTM ACCNS REPAIR MAINT TO SUNKEN FLOOR TREATMENT TOILET REPAIR INTERNAL WATER SUPPLY SYSTEM BOUNDARY WALL CHAINLINK FENCING GATES PCC COPING AND OTHER MISC BR WORKS

M&L Repair to ends of chajjas/ parapets by removing old concrete, loose material & cleaning of the reinforcement and finishing the surface with rich cement mortar 1:3 , finished fair & even and making good with existing finishes complete all as specified and as directed. Note: Rate quoted by the tenderer shall be deemed to inclusive of double steel scaffolding.

M&L for removing old existing rubbish/battered/useless mixture of the binding materials such as cement / Lime and fine aggregate (<4.5mm retained on IS Sieve), loose/unsound weaken mixture of binding materials such as cement / Lime and coarse Aggregate (>4.5mm retained on IS Sieve), fine Aggregate of any description and in any position from existing external/internal surfaces of RCC components or any surface having average profundity of 15mm (Approx height 10m from natural ground level) by hand tool that has a long metal blade with a sharp edge at the end, chisel and hammer or using robust pneumatic chisel hand tools and removal beyond MoD land including cutting of all edges, making square shoulders of the aperture, coarsen the smooth surfaces, curettage /removing of all deterioted/decayed loose surface complete all as specified and directed by Engr-in-charge.

M&L for cleaning and removing all corrosion scales , rust , etc using emery / wire brush and finally cleaning using rust remover & cleaning agent that is one part alkaline based material, with corrosion inhibitors and dispersing agents and supplied as a clear brown solution. The specific gravity shall be 1.2 – 1.22 @ 25°C. The pH value shall be between 9.5 to 10 and the coverage shall be 5 – 6 m2/ L as per manufacturer instructions complete all as specified and directed by Engineer-in-charge.

M&L for repair to cracks and damaged existing surfaces by Hydrogen Free Expanding And Plasticising Additive . It plasticizes the mix, allowing for substantial reduction in water without affecting the fluidity, thus improving the strength and impermeability, the admixture/ additive in cement to provide non‐shrink properties Cementitious Cable Encapsulation . (a). Fixing of pvc nozzles in zig-zag fashion not more than 50cm c/c on RCC surfaces on all directions as required after drilling holes in concrete, fixing pvc nozzles with fast setting mortar and covering with renderoc plug. The size of holes shall be 20mm dia and 75mm in depth complete all as specified and directed by Engineer-in-Charge.

M&L for applying Polyster Resin based Anchoring material in concrete before fixing nozzle it should typically attains a compressive strength in excess of 20N/mm @ 3 hours and and ultimate compressive strength of 70N/mm in 7 days (50mm x 50mm x 50mm)when tested as per BS 6319 Part 2 : 1983as per manufacturer instructions complete all as specified and directed by Engineer-in-charge.

M&L for Shear thinning agents in RCC/ walls/ ceiling/ columns/ beams/floor/bricks cracks after opening up in “V” groove manner covering the area of 300mm from central line of crack with the depth of 8 mm complete with three components compound graded filler, E-Resins and Shear thinning agents with adjustable consistency by varying the filler component epoxy resin based complete all as specified and directed by Engineer in Charge.

M&L for applying 2 coats of two component amine cured epoxy mastic coating using Light brush blasting using nonmetallic abrasive leaving a clean, rough and even pattern.it should be based on a 100% epoxy formulation and contains no solvents or water diluents. Apply two coats with brush or squeeze to the existing surface, working well into the substrate.it should achieve Compressive Strength of >70 MPa after 14days, having pot life, minutes at 27⁰C, 100 g >40 mass as per manufacturer instructions complete all as specified and directed by Engineer-in-charge

M&L for providing and fixing welded MS wire mesh weighing not less than 1Kg/Sqm of size 50mmX50mm of 2.6mm dia on the prepared surface & surface should be cleaned and be removed from dirt, fungus and all foreign material complete all as specified and directed by Engineer in Charge.

M&L for applying 2 coats of primer slurry prior to the application of the repair mortar having multiple corrosion inhibiting synergies and which is a blend of pc graded fillers corrosion inhibiting additive and re-dispersible polymers in powder form mixed with water for application by brush to coat the reinforcement/steel within 10mm of the finish surface and where chlorides are present so as to achieve adhesion bond strength of 1 MPa to steel. Pot life of 0.5 hr @ 30°C. It shall be workable for not more than 15 minutes at same temperature. The mixed density shall be not more than 2.05. The water/powder ratio shall be 0.3 by weight complete all as specified and directed by Engineer-in-charge.

M&L for applying 20mm shear thinning fibre reinforced polymer modified , impermeable to aggressive elements, dual shrinkage compensated, cementitious repair mortar with alkali resistant synthetic fibres for exceptional resistance cracking complies ASTM C 109 with flexural strength ASTM C 348 @ 7 days meeting 7N/sqmm, tensile strength @ 7days (ASTM C 307)> 3 N/sqmm, compressive strength of 35MPa at 7 day and 45MPa at 28 days, at the outer or inner RCC which provides excellent bond to concrete, Improves tensile and flexural properties of mortar, Versatile having specific gravity of 1.02 cement sand can be used for finishing purpose complete all as specified and directed by Engr-in-charge.