shear strength of fiber reinforced concrete floor
shear strength of fiber reinforced concrete floor
(OP)
Hoping someone can help me here. I'm trying to find some design standards/equations for allowable "Punching Shear" (i.e., two-way shear) on a 6-inch thick concrete floor that only has synthetic fiber reinforcement (uniformly dispersed). Normally, I would follow the provisions of ACI 318.11.12.2 but this assumes that it is just "plain, unreinforced" concrete.





RE: shear strength of fiber reinforced concrete floor
RE: shear strength of fiber reinforced concrete floor
RE: shear strength of fiber reinforced concrete floor
The loading is from a series 38-ft high special rack/shelving system. The shelves come with a standard 4.5" x 4" base plate (6" x 6" plate is optional and extra). The manufacturer/supplier also informed us they have never had a problem with this rack system on 6" concrete floors in the past.
All comments welcome ..... TIA (thanks in advance)
RE: shear strength of fiber reinforced concrete floor
but for your situation I completely agree with GeoPaveTraffic and JAE - they won't help at all.
www.SlideRuleEra.net
RE: shear strength of fiber reinforced concrete floor
Fiber structural capacity = 0
RE: shear strength of fiber reinforced concrete floor
The fibres, as I understand, helps with the retention of bleed water and the improvement is gained by a more uniform hydration of the concrete gel.
Dik
RE: shear strength of fiber reinforced concrete floor
RE: shear strength of fiber reinforced concrete floor
RE: shear strength of fiber reinforced concrete floor
If, however, you find that there is significant amounts of fiber (5-7 bags) or greater than 0.5%-2% then perhaps you may have some residual strength but I bet you'll be hard pressed to find a text on mechanics that will provide the necessary and reliable strength.
Regards,

Qshake
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