Grouting

Expansion Joint - Grinding and cleaning of surface from loose materials and paint with diamond/wire grinding machine Providing and fixing non return packers or Special Needle after drilling holes of 10mm Dia at a distance of 500 mm c/c and cleaning the same with compressed air or blower in both directions horizontal and vertical. Providing and injecting two component Polyurethane Foam injection grout, to be site mixed in ratio 10:1 (10-part base 1-part hardener) as per manufacturer that shall be injected with mechanically piston driven pump with maximum up to 100 bar pressure or as per the requirement.
Concrete Crack - Make necessary holes of 8 to 10 mm in concrete to a depth of about 75mm using proper electric hammer drill. Fix new nipples of 8 to 10mm using aluminium pipes using neat cement or M-Seal for proper anchorage. Carry-out pressure grouting with a lean cement: polymer slurry (POLYALK FP) using a proper grouting pump. Seal the holes properly after the grouting nipples have been removed.