Reinforced concrete is a very common building material for
construction of facilities and structures. Complementing the strength of
concrete in tension is very limited, the construction of steel structure was a
cost effective solution. However, insufficient concrete cover, poor design or
workmanship, and the presence of large amounts of aggressive agents, including
all environmental factors can lead to cracking of concrete and corrosion of
steel bars. For example, the United States, almost 40% of bridges are
structurally deficient or functionally obsolete, and the percentage is
increasing, according to the Federal Highway Administration (Griffiths 2000)
For many years there have been many studies on this subject the corrosion, and
the interest of FRP (Fiber Reinforced Polymer) has recently emerged as a
potential substitute for steel. A careful examination of the potential of FRP
reinforcing bars to meet cost and performance may propose appropriate
solutions.
The benefits
* Waterproof to chloride ions and chemical attack
* Tensile strength than steel
* 1/4th weight of steel reinforcement
* Transparent to magnetic fields and radio frequency
* Electrically and thermally conductive
Based on the above characteristics, FRP bars appears to
be a promising alternative to steel reinforcement in concrete structures such
as marine structures, parking structures, bridges, roads in extreme
environments, and structures are very sensitive to magnetic fields and
corrosion.
For more information : http://www.frpdistributors.com
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