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RE: FRP rebar in concrete design[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: "'seaint(--nospam--at)seaint.org'" <seaint(--nospam--at)seaint.org>
- Subject: RE: FRP rebar in concrete design
- From: "Horning, Dick/CVO" <dhorning(--nospam--at)CH2M.com>
- Date: Mon, 1 Mar 1999 15:23:30 -0700
Maybe not so good for a balcony after all. The glass fibers have a *much* lower modulus of elasticity than steel, so you end up having to use more reinforcing to limit deflections. I think their effectiveness is limited to applications 1) where severe chemical corrosion, much more than atmospheric exposure, is a concern; 2)where an electromagnetically transparent material is required. There are several manufacturers; most provide a fiber spirally wrapped around the outside plus a gritty surface as the means of mechanical bond. A salesman from Atlas left me a sample of a 180 degree bend with deformation ribs similar to steel rebar (which was molded rather than pultruded). The material is really still in its infancy. -----Original Message----- From: James A. Lane [SMTP:jl(--nospam--at)clarknexsen.com] Sent: Monday, March 01, 1999 1:08 PM To: seaint(--nospam--at)seaint.org Subject: FRP rebar in concrete design February's Civil Engineering magazine had an article on glass FRP. I would like to know if anyone has ever designed any reinforced concrete with glass reinforcement? I would like to research this item to broaden my knowledge as an engineer. The article said ACI committee 440 is developing a set of guidelines for designs and should be out mid-1999. Are their currently any texts on the market? I could see where this type of reinforcement would be ideal for exterior balconies. Any comments or information on the above would be appreciated. Hope you all had a good engineers week, James A. Lane, P.E.
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