"India Looses Rs. 2 Lakh Crores on Account of Corrosion of Material & Metal in Infrastructure, Vehicles, Pipelines and Water Facilities etc..... Media report.
Corrosion has been termed as The Unseen Destroyer. It is all Pervasive in the atmosphere and start-attacking concrete steel etc. It damages not just homes but bridges dams, Industrial Plants with catastrophic results, deadly combination of Saline Breeze, Splashing of sea water subsoil saline water and gaseous emissions in Industrial regions leads to corrosion.
FRP (GRP) is being increasingly used for corrosion Resistant application as it offers better corrosion resistance to specific environment and temperature.
FRP (GRP) is a Composite material i.e. Glass fibre & Resin is combined to from the new material. The Glass fibre is the load bearing constituent- It has the benefit of Strength of glass fibre and the Corrosion Resistant Properties of Plastics i.e. resin matrix It has filler material also which enhances the functional properties of the composites e.g. Gloss, Wear resistance, Fire retardancy, Improvement in electrical Insulation etc.
The resin matrix provides a rigid shape required for the reinforcement to take external load, which otherwise cannot be taken by the reinforcements alone. Depending upon the application, the matrix material (resin) have to provide the required properties.
The choice of proper resin is vital in ensuring good weathering corrosion resistance. If the resin matrix is not able to withstand. the corrosion, the mechanical properties of the composites are affected and vith the on-set of time the mechanical properties are drastically reduced.
It is generally completely elastic up to the failure and exhibit no yield point, the mechanical properties depend upon :-
The main technique to Mould / Fabricate FRP (GRP) are :-
The choice of Process depends upon the end Product to be Moulded / Fabricated