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6 Oct ’15
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I know the traditional way to reinforce a floor is welded wire mesh, easy to power trowel and it is a decent floor.
Also, there is the fiberglass that the batch plant can add...I have seen good result with that when we used it for a garage...When troweled some of the fibers stuck up, but with use they went away for the most part...but not as smooth as straight concrete.
We were talking about this with our 'green' architect, she told about a somewhat new product that did the same thing but was meant to be finished troweled to glass smoothness if wanted with none of the bristle issues and accepts stain evenly.. She said she had seen it used and it was nice.
Called up local batch plant. The guy said they have been using it for 7 years and commercial applications like it a lot. Adds $10 to the cost of the yard.
$10...very cost effective compared to mesh and saves a labor step. I am really thinking about this anyone have any experience or knowledge with this stuff? Thoughts?
Here is a half way decent site that I found with a quick search.
27 Aug ’14
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I did #3 24" OC in a grid all the way across (on 1.5" chairs for a 4" thick slab)
Made it easier to pour as we walked across the ground, not the wire. I'll look into this stuff. Curious to know.
Is it built to eliminate the need for rebar or just reduce cracking?
6 Oct ’15
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Ican, the guy at the batch plant told me it would eliminate rebar and reduce cracking...that it was best suited for an interior floor like we are doing.
It almost seems too good to be true which raises a flag for me. But if I can verify that it works I would go for it.
Our architect said she knows three people that have gone this way and she was not aware of any issues, but would try to get in touch with them (2 used it for a walk out basement and the other used it for a 3 season room).
The batch plant guy did say for something like a garage to go with the regular fiberglass additive or the mesh.
In my old garage we used the regular fiberglass for the 11 yards we poured, that was 20 years ago. The floor in the garage did have some shrinkage cracks, I didn't have time to run and get plastic to lay down and only watered the base before we poured. We also poured a apron (12x20) we did put cuts in it, and I thought we had a good base...however, (about 10 years after the pout) there was a full crack about 3ft in from the Right side along the entire length, I am sure the base settled...I think if we put a few more cuts in then it would of cracked at that control joint...lesson learned.
On a side note: For the new place we are planning on cutting/scoring the slab inside to make it look like 2x2 or 3x3 tiles. Thinking about 3/8 to 1/2 deep. Then stain it.
15 Feb ’12
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we have used rebar, fibre and a combination of the two in all of our projects, always have cracking, this stuff sounds interesting
6 Oct ’15
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K, do you have any cracking in your house?
...there are two kinds of concrete: cracked and stuff that hasn't cracked yet...fair amount of truth to that.
15 Feb ’12
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agreed, yes we have cracking
I was always told it's not an issue unless you can fit a quarter into it edge wise or one side is higher than the other, my wife always looks funny at me as I crawl around the floor with a quarter in my hand every year
6 Oct ’15
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I told my wife that we could always get out some artist paint brushes and paint 'with' the cracks to look like vines...don't think that would hold up to foot traffic though.
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