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Applications
Four
general categories of applications where FRP rebars are suitable
alternatives to steel, epoxy-coated steel, and stainless steel
bars:
Reinforced Concrete Exposed to Deicing Salts
FRP bars
can eliminate the corrosion problems and reduce maintenance and
repair costs in northern climates where massive quantities of
deicing salts are used every year on roads and pavements.
Applications include: parking structures; bridge decks; Jersey
barriers, parapets; curbs; retaining walls and foundations;
roads and slabs on grade; and many others.
Structures Built in or Close to Seawater
Corrosion
of steel reinforcement is a common problem in structures built
in or near seawater. Possible applications are: quays;
retaining wall; piers; jetties; caissons; decks; piles;
bulkheads; floating structures; canals; roads and buildings;
offshore platforms; swimming pools and aquariums; and others.
Applications Subjected to Other Corrosive Agents
Chemical
processing industries as well as domestic or industrial
wastewaters constitute major sources of corrosion for steel
reinforcement. Typical applications include: wastewater
treatment plants; petrochemical plants; pulp and paper mill and
liquid gas plants; pipelines and tanks for fossil fuel; cooling
towers; chimneys; mining operations of various types, nuclear
power plants; and nuclear dump facilities.
Applications Requiring Low Electric Conductivity or
Electromagnetic Neutrality
Using
steel bars in applications where low electric conductivity or
electromagnetic neutrality is needed often result in a complex
construction layout, if such use is possible at all. Possible
applications are: aluminum and copper smelting plants; manholes
for electrical and telephone communication equipment; structures
supporting electronic equipment such as transmission towers for
telecommunications; airport control towers; magnetic resonance
imaging in hospitals; railroad crossing sites, and military
structures with requirement for radar invisibility.
Materials and Manufacturing
FRP rebars
are primarily manufactured using the pultrusion process.
Surface deformations patterns contribute to the bond to concrete
are available as ribbed, sand-coated, and helically wrapped and
sand coated. The most common fiber reinforcements are glass and
carbon fibers. Resin systems used to protect the fibers from
environmental attack are based on 50 plus years of rigorous
corrosion applications.
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Introduction & Benefits
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