Vinpetrol
Well-known member
I had the same issue here . I asked my structural engineer for a spec using it in my house . 200m2 floor slab and founds . Just to see what he’s say. He came back with you can’t use it in the footings as it doesn’t give the same structural strength but I can use it in my structural slab as it reduces shrinkage and there are less loads in the slab .Yeah its interesting....they have sold a type of fibres over here for years, telling us its a direct replacement for mesh in lighter applications, we've been dubious so as with this job any time there was significant load on it we've gone with what we know works ie mesh, but it might well be worth putting fibers in to help with potential plastic cracking or shrinkage as they are not looking for a fancy finish, as @Steve says they can show.
Im well aware concrete is a bit of a black art and a specialist job if your going for the best finishes etc, while we have floated floors and got decent results in thd past nowadays we only do concrete as part of a bigger project and keep it basic, this garage is getting another finish down the line.
I dont pretend to be an expert by any means.
I won’t be using it anywhere , I like to think I do a decent job upfilling under structural slab but I like the piece of mind that if any area sinks so much as a couple mm the slab will stay bridged over it with mesh in it but I would t be as confident with the fibres .