Located in Kolkata, we are highly specialized in the work of Bridge Deck Protection. The service includes complete cleaning and drying of the surface prior to the protection work. Excellent quality polymeric waterproofing compound is used in the Bridge Deck Protection work which is a translucent brown coloured modified phenolic resin based single component. Our highly skilled team carries out the entire work of Bridge Deck Protection with high level of preciseness.
Underside of bridge deck, railing, etc. of bridges and Piers and Substructures which are not in River Bed
Cleaning and drying the surface; applying (@ 0.30 litre per square metre) a coat (DFT of 100-150 micron) of a translucent brown coloured modified phenolic resin based single component high performance polymeric waterproofing compound (sp. gr. 0.87, rosin content nil and a solid content of minimum 0.47%), e.g., PERMAPROOF, with demonstrable properties of resistance to water and acid; applying (@ 0.25 litre per square metre) a top coat of a modified phenolic resin based single component waterproofing compound of grey or other shades (sp. gr. 0.85), e.g., PERMACIL-GA, before the base coat becomes tack-free; permitting the coatings to cure and dry naturally; the 2-coat system shall be impermeable under a waterhead of 20.0 metres.
Requirement : 0.30 litre/sqm for underside of bridge deck, railing, etc. of bridges and piers and substructures
PERMACIL-GA (or other shades) :
Requirement : 0.25 litre/sqm for underside of bridge deck, railing, etc. of bridges and piers and substructures
Cleaning the surface; preparing the surface by acid etching; treating the surface with a two-layer plaster; the first layer shall be 5 mm thick with cement (OPC or slag), admixed with an octadecanoic acid based cementitious waterproofing compound (bulk density not greater than 0.5 gm/cc, moisture content not greater than 2.0% and free fatty acid not greater than 0.2%), e.g., PERMAKAR 3, in the weight ratio of 50:3 for cement and waterproofing compound, further admixed with specially fabricated deformed galvanized steel fibre (@ 150 gm per square metre of treatment surface), e.g., KARFIB; finally providing a 12 mm thick cement-sand (1:2.5) plaster, enriched with polyester fibre, and curing the plastered surface; the treatment shall be impermeable under a waterhead of 20.0 metres.
PERMAKAR 3 :