Carbon Fiber Repair?
Carbon Fiber Repair?
(OP)
We have a proposal in to repair a design mistake which allows too much deflection in a slab bridge, using carbon fiber layers underneath. Has anyone ever heard of that?
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RE: Carbon Fiber Repair?
All of the above companies have good technical support.
RE: Carbon Fiber Repair?
A caution about the use of carbon fiber - it doesn't behave the same as steel for reinforcing concrete. When there is a failure, it is sudden because the stuff doesn't yield like steel.
RE: Carbon Fiber Repair?
I suggest that general web search choosing those sites from universities as a start. Also check ACI for concrete repair committees.
Antonnio Nanni from UMR is noted in this field.
Regards,

Qshake
Eng-Tips Forums:Real Solutions for Real Problems Really Quick.
RE: Carbon Fiber Repair?
I know fyfe would be glad to do the initial assessment for free
RE: Carbon Fiber Repair?
The features of carbon or glass composites include high strength/weight ratio, high stiffness/weight ratio, good corrosion resistance, good fatigue properties and so on, but not the absolute stiffness value.
RE: Carbon Fiber Repair?
RE: Carbon Fiber Repair?
I believe California DOT uses this as method to strengthen bridges. You could do a search on their webpage to hunt down some specifics on this method (or just do a general google search).
RE: Carbon Fiber Repair?
RE: Carbon Fiber Repair?
Regards,

Qshake
Eng-Tips Forums:Real Solutions for Real Problems Really Quick.
RE: Carbon Fiber Repair?
As a side note, this site is by far the best site on the web to openly discuss these types of issues, and I for one am glad it is available. My hat is off to whoever makes it possible, and to those who share their thoughts and experiences.
RE: Carbon Fiber Repair?
productivity for my FRP system (2 layers of wrap)
Productivity = 15/5.4 = 2.78 man hour/m2
productivity for one piece of steel plate (eqv to my wrap)
Productivity = 37/5.4= 6.85 man hour/m2
RE: Carbon Fiber Repair?
I think also that viewing the end benefit of how much load increase per dollar spent is also important. If you can't increase the capacity to remove a load rating, sometimes it's worth it to remove and replace. Especially in an area where it was once rural but is seeing more and more development.
Regards,

Qshake
Eng-Tips Forums:Real Solutions for Real Problems Really Quick.