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We're almost at 3lbs MVER, so what if the rH is over 90% ?
07-25-2012, 08:25 AM,
#11
RE: We're almost at 3lbs MVER, so what if the rH is over 90% ?
Valid test? They changed the rules for testing, so now how do we interpret the results? A 3 pound floor may now be a 10 pound floor. If the 3 pound floor was good 6 months ago, is it bad now because we changed the method of testing? It's all hocus-pocus based on no science. This test came from dumping salt on concrete and covering it to see if it got wet. It evolved to specific numbers that resulted in failures, and now the test has changed completely so it has no historical background.

Just consider this: If you have to grind the floor to take a CaCl test you are changing the surface of the slab. You are increasing the porosity of the floor and letting it breathe. You are increasing the MVER at that area. BUT you are NOT grinding the entire slab, you are NOT increasing the MVER across the whole area. You are NOT testing a representative sample of the floor MVER.

What you are trying to do is determine the moisture content of the floor using a test that is outdated and easily swayed by atmospheric conditions.

I say give it up and use the test that is proven to work. Leave the salt to deicing sidewalks and rimming margarita glasses.
JD Grafton
Concrete Answers for Flooring Problems
[email protected]
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RE: We're almost at 3lbs MVER, so what if the rH is over 90% ? - CC Solutions - 07-25-2012, 08:25 AM