Concrete porosity test


The floor covering industry utilises substrate porosity tests. Could the resin flooring industry also benefit from these simple tests?

I was reading the ASTM 3191-16 porosity test method as used and recommend for the floor covering industry. The test is simple enough and the concept of knowing that a surface is "porous" seems important. So why would the resin flooring industry not adopt the test, or at least use it in conjunction with other methods for determining if a substrate is suitable for coating?

Below is a little variation of the test using three different test liquids. Technically I should have used a pipette with a single drop applied to the substrate, but for the purposes of this discussion this method will do.



The discussion of the test starts to evaluate if the test is suitable for resin flooring:


So, what are your thoughts? Would it help to conduct porosity tests on each prepared concrete slab? Could it be misleading?




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David Hall wrote:
22 Sep 2:31pm
For me it’s critical to work out your consumption of primer pet m2 which can dramatically affect the flooring contractors quote both positively or negatively

David - SA
Resin Jack
Resin Jack replied with:
22 Sep 6:49pm
Thanks for the comment, David. Interesting that you mention each way impact. I had one contractor mention how he uses a "porosity test" to determine if the slab is too porous.... and therefore too weak. So not only applying the maximum timeframe but also the minimum timeframe. Thanks again.

Take Care and keep smiling @resinjack