Fibermesh

[jb777]

I have a customer who would like to use fibermesh concrete instead of rebar cage on an 8’ x 5’ x 3’ deep block footing supporting a heavy MRI unit (16,000 lbs) in a hospital building in California (no freeze-thaw issues). Foundation is only subject to compression loads of equipment, and there are some anchor bolts in the concrete. I don’t know enough about fibermesh to know if this would be OK or not. I’m inclined to say it’s not OK and rebar cage is better. Do you have someone there with experience who could comment? Thanks.

 

[dik]

Not relying on fibres structurally, I rely 0n a proper mix design. I suspect that with the mechanism of freeze thaw failure, the fibres would have little effect, but, don't know for sure.


Dik

 

[rapt]

dik

You have to specify fibres specifically. There is no such thing as generic with fibre as they all perform differently.

 

[dik]

rapt... agree, but many of them have a common effect, and whether they are long or short, straight or 'wiggly' the basic effect is similar. By controlling bleedwater they improve the overall mix design.

Dik