Fiber reinforced concrete replace wire mesh?
Fiber reinforced concrete replace wire mesh?
(OP)
Hello everyone
Well I want to use polypropylene (or nylon) fiber as replacement of wiremesh in an elevated slab of composite metal decks. I just want to know is there any code or at least suggestions that suggest this substitution? (As manufacturer of the fiber recommend this)
Thanks
Well I want to use polypropylene (or nylon) fiber as replacement of wiremesh in an elevated slab of composite metal decks. I just want to know is there any code or at least suggestions that suggest this substitution? (As manufacturer of the fiber recommend this)
Thanks






RE: Fiber reinforced concrete replace wire mesh?
RE: Fiber reinforced concrete replace wire mesh?
RE: Fiber reinforced concrete replace wire mesh?
RE: Fiber reinforced concrete replace wire mesh?
Regards,

Qshake
Eng-Tips Forums:Real Solutions for Real Problems Really Quick.
RE: Fiber reinforced concrete replace wire mesh?
RE: Fiber reinforced concrete replace wire mesh?
RE: Fiber reinforced concrete replace wire mesh?
RE: Fiber reinforced concrete replace wire mesh?
Go to www.fibermesh.com for more information.
RE: Fiber reinforced concrete replace wire mesh?
"Synthetic fibers are used in floors to minimize plastic shrinkage cracking of concrete. These fibers should not be used to replace temperature and shrinkage reinforcement because they have little impact on the behavior of concrete after it hardens."
RE: Fiber reinforced concrete replace wire mesh?
RE: Fiber reinforced concrete replace wire mesh?
Regards,

Qshake
Eng-Tips Forums:Real Solutions for Real Problems Really Quick.
RE: Fiber reinforced concrete replace wire mesh?
Dik
RE: Fiber reinforced concrete replace wire mesh?
http
www.SlideRuleEra.net
RE: Fiber reinforced concrete replace wire mesh?
I believe what you're referring to (and referred to in mbullism's post)is called "plastic shrinkage cracking" that occurs during the curing process, as opposed to shrinkage that occurs over months or years.
Aren't proper curing techniques supposed to prevent plastic shrinkage cracks?
RE: Fiber reinforced concrete replace wire mesh?
RE: Fiber reinforced concrete replace wire mesh?
Dik
RE: Fiber reinforced concrete replace wire mesh?
RE: Fiber reinforced concrete replace wire mesh?
Choose the statement that you most closely agree with:
A. fibers are worthless
B. fibers help prevent plastic shrinkage cracking
C. fibers prevent long term shrinkage cracking
D. fibers prevent cracking due to temperature effects
E. fibers can be used to structurally reinforce concrete
F. fiber design is covered by the concrete institute
G. fiber design is covered by the metal deck institute
H. fibers increase the compressive strength of concrete
Apparently, I'm not the only one who is confused, and I think I know who is causing the confusion.
RE: Fiber reinforced concrete replace wire mesh?
RE: Fiber reinforced concrete replace wire mesh?
D (within limits)
F (ACI 302, Paragraphs 3.2.4.1 and 3.2.4.2 - perhaps other documents, too)
G "Steel Deck Institute Design Manual for Composite Decks, Form Decks and Roof Decks - No. 30" (as updated in 2003)
www.SlideRuleEra.net
RE: Fiber reinforced concrete replace wire mesh?
Agree with Dik and SRE.... and will add H..with reservations, as most of the fiber referred to these days is polypropylene fiber, which does little for compressive strength (and quite honestly...little for anything else), but steel fiber can be used very effectively for property enhancement, including an increase in compressive strength (though it gives a much higher percentage increase in flexural strength than it does in compressive strength)
RE: Fiber reinforced concrete replace wire mesh?
RE: Fiber reinforced concrete replace wire mesh?
RE: Fiber reinforced concrete replace wire mesh?
Also, regarding welded wire fabric (W1.4, W2.0 or W2.9): What performance is expected from the light gage wwms? What formula supports it's use? I can only think of one, and it's the sub-grade drag formula; As = FLW/Fs, and this formula has been taken out of ACI 360.
For a good slab on grade, use a consertive control joint spacing to control the restraint drying shrinkage and fibers, either polypropylene, steel or a combination of the two, to enhance concrete properties that add to durability. Throw the wwm in the river.
RE: Fiber reinforced concrete replace wire mesh?
Intrusion Prepakt
www.marineconcrete.com
RE: Fiber reinforced concrete replace wire mesh?
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RE: Fiber reinforced concrete replace wire mesh?
another reason is ductility. A 1 or 2" fiber can only stretch so far before it breaks!
RE: Fiber reinforced concrete replace wire mesh?
A. Not worth the cost and effort to obtain dependable results.
I then choose A.
The article cited by Parra-Montesinos say steel fibers were approved by ACI 318 for shear reinforcement in beams. Not found in my copy of ACI-318. Where do I look for this approval?
RE: Fiber reinforced concrete replace wire mesh?
There are no fiber producers that will tell you they can resist the negative moment above suspended deck supports.
RE: Fiber reinforced concrete replace wire mesh?
The confusion continues when engineers take test data for steel fibers in elevated slabs on metal deck, and apply it to slabs-on-grade with polypropalene or nylon fibers.
Test data that shows that steel fibers compare favorably to welded wire fabric doesn't carry a lot of weight, as welded wire fabric never did anything to enhance concrete to begin with.