08-05-2012, 11:14 AM
USE OF POLYMER CAMPOSITES IN BRIDGE REHABILITATION
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INTRODUCTION:-
Metal conduits that are supported by bridges are subjected to environments where corrosion can easily occur as a result of factors such as
(1) the cyclical variations in humidity caused by precipitation and
(2) the effects of airborne salt in coastal areas and places where roads are salted in winter to prevent freezing . A corroded conduit could lead to the cables inside it being damaged or people getting hurt by it falling off the bridge. Consequently, there is a need for safe, simple, and low-cost repair techniques that can be used to perform permanent and effective repairs on corroded conduits. These problems can overcome by using polymer composites in bridge rehabilitation.
WHAT IS POLYMER?
Polymers are made up of many molecules all strung together to form really long chains (and sometimes more complicated structures, too).
WHAT IS POLYMER COMPOSITE?
A composite is any material made of from more than one component. A polymer composites are composites made from polymers ,or from polymers along with other kind of materials.
TYPES OF POLYMER COMPOSITES:-
Natural composite(e.g.wood, bone bamboo)
Synthetic composite(e.g. tire, fiber glass, fiber reinforced polymer)
Hybrid composite(e.g. wood beam reinforced with FRP plate)
BRIEF DESCRIPTION ABOUT THESE POLYMER:-
RP:-(Reinforced plastics)
Reinforced plastics are a special breed of plastic. They're used for the production of tough and durable materials for heavy-duty applications like building construction.
GFRP:-(Glass fibre reinforced polymer)
These are the polymer made of a polymer matrix reinforced with fibre glasses. These are used to improve the mechanical properties such as stiffness and heat resistance.
ACM:- (Advanced composites material)
Advanced Composite Materials, (LLC ,ACM, LLC) is a world leader in silicon carbide technology. We manufacture and sell silicon carbide products, including whiskers and fibers, along with press-ready ceramic blends and solid ceramic composites containing silicon carbide.