REPAIRS TO ROOF TREATMENT AND CONNECTED ITEMS OF AGE B/R-I UNDER GE (A) JAISALMER AT MIL STN JAISALMER

M&L for Chipping of slab/ columns/ beams/chajjas /parapet/ roof projection/ balcony/ staircase and removing loose mortar with chisel hammer without much impact on concrete surface, clean the surface by sand blasting the surface using river sand with minimum of 6 kg pressure at the nozzle or air blow by electric pressure blower by mechanical compressor, cleaning the exposed reinforcement with wire brushes etc and disposal of debris for all lead and lifts complete all as specified and directed by Engineer-in-charge.

M & L for Cleaning & applying rust remover in two coats over rusted reinforcement surface and providing anti corrosive coating with two component epoxy based zinc rich primer/Rust passivation Inhibitor coat at the rate of 6-8 sq. mtr/ltr not less than 50 microns dft with Sika friazinc R or equivalent to reinforcement surface as per manufacturer’s instructions including all scaffolding, machinery, tools tackles and clearing of debris complete all as specified and directed by Engineer-in-charge.

M&L for applying to the damaged concrete portion of slab/ columns/ beams/ chajjas/ parapet / roof projection/ balcony/ staircase with single component, fiber reinforced, dual shrinkage- compensated thixotropic, cementitious ptch repair mortar Sika monotop 122F (having the technical parameters mentioned in material specifications) capable of applying up to 20-25mm thick in double layer initially by hand and finishing with troweled carefully compacting the same around the rebar and finishing to bring it in line with existing concrete surface with an average specified thickness complete all as specified and directed by Engineer-in-charge.

M & L for Hard drawn steel wire fabric n exc 4Kg/Sqm cut to lengths, bent to shape required and tying with and including mild steel wire (annealed) not less than 0.9mm in dia supplied and fixed in reinforcement complete all as specified and directed by Engineer-in-charge.

Taking down cement plaster of any description, any thickness from external surfaces of walls/soffits etc. incl raking out joints, hacking for keys, scrubbibg down with water etc complete all as specified and directed by Engineer-in-charge.

M&L for rendering 15 mm thick readymade plaster on inner/outer walls with UltraTech READIPLAST by adding 17-19% of potable water by weight of material. For thickness above 15 mm it is recommended to be applied in multiple layers. Ready-mix plaster shall complies with IS 1661-1972, IS 2250-1965, IS 2402-1963 and confirms the Compressive strength @ 28 Days- 10-12 Mpa/ Bulk density- 1500-1600 Kg/m3 complete all as specified and directed by Engineer-in-charge. Note :The rate quoted by contractor shall include cleaning of surface, application as per instruction and scaffolding upto 20mtr height all as specified and directed)

M&L for rendering 5 mm thick readymade plaster on inner/outer walls with UltraTech READIPLAST by adding 17-19% of potable water by weight of material. Ready-mix plaster shall complies with IS 1661-1972, IS 2250-1965, IS 2402-1963 and confirms the Compressive strength @ 28 Days- 10-12 Mpa/ Bulk density- 1500-1600 Kg/m3 complete all as specified and directed by Engineer-in-charge. Note :The rate quoted by contractor shall include cleaning of surface, application as per instruction and scaffolding upto 20mtr height all as specified and directed)

M & L for applying bond coat on the prepared old surface of concrete/masonry to receive new polymer mortar/polymer modified mortar or micro concrete with two coats of Sika-Latex Super SBR or equivalent as per manufacturer specifications. Laying of reinstatement polymer mortar or micro concrete shall be completed within the overlay time of bonding coat. This bond coat act as bonding agent between old and new concrete complete all as specified and directed by Engineer-in-charge.

M&L for the surfaces which are to receive the coating or treatment, must be free from oil, laitance, grease, wax, dirt or any other form of foreign material adhering on it before the waterproofing job started. Dust free the surface, including removing of old felt / loose plaster / concrete etc. and repair with polymer mortar by adding bonding agent (SBR). Repairing of slab, parapet wall junction, cracks and other large blowholes by open in “V” shapes & filling by polymer mortar or putty followed by fiber mash tape with SBR in conjunction with cement complete all as specified and directed by Engineer-in-charge.