Concrete Roughness
Concrete Roughness
(OP)
I have a concrete surface that will receive two coats of siloxane or silane to protect the surface and the protection will be applied annually or bi-annually.
I'm looking for a concrete surface that will have a degree of roughness... similar to a powerfloat or a light powertrowel with a light broom finish.
Is there a way of specifying a degree of 'roughness' as opposed to flatness that will give me the equivalent of something like 100 grit sandpaper?
Dik
I'm looking for a concrete surface that will have a degree of roughness... similar to a powerfloat or a light powertrowel with a light broom finish.
Is there a way of specifying a degree of 'roughness' as opposed to flatness that will give me the equivalent of something like 100 grit sandpaper?
Dik






RE: Concrete Roughness
RE: Concrete Roughness
RE: Concrete Roughness
Dik
RE: Concrete Roughness
You could specify a light sandblasting after form removal, using a 20-30 grit size.
Probably the easiest way to achieve that profile is to acid etch the concrete after form removal. I would use a citric acid solution rather than muriatic or other more aggressive acids. The citric acid is more controllable (mix the strength you want to achieve the result) and is more likely to be consumed in the process, so little or no neutralization would be required...just check the pH of the surface.
Ron
RE: Concrete Roughness
RE: Concrete Roughness
RE: Concrete Roughness
Dik
RE: Concrete Roughness
There is a macrotexture test procedure for measuring the texture of broomed pavements, but it may not be effective at evaluating a light broom finish.
Greg
RE: Concrete Roughness
Dik
RE: Concrete Roughness
As you have also noted, be careful of the slipperiness of silanes/siloxanes, even with a roughened surface.
What is the purpose of the surface protection? Also, a light acid etch should not result in residual acid in the area, so the electrical equipment should not be affected.
RE: Concrete Roughness
Dik
RE: Concrete Roughness
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