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JD's ref: RH and MVER conversion explanation
03-25-2013, 06:26 AM,
#3
RE: JD's ref: RH and MVER conversion explanation
The two tests are not related as they quantify two different principles. The MVER test tells you what is happening with the top 1/4" of concrete, the RH test tells you what conditions are inside the slab.

99% of the time the top of the slab is an open book and you don't need to test it to install flooring. I should say that was true about the old 1869, I haven't done any revelationalistic testing utilizing the new MVER standard. ( I make up words as I need them Tongue )

The only reason I would feel the need to test for MVER is if a slab was recently wetted or was not climate controlled previously. Adhesive bond strength can be adversely affected by high levels of surface moisture. This moisture doesn't allow the adhesive to absorb, the carrier water to dissipate and the adhesive bond to occur as it should. This results in a lower tensile strength bond which can fail under stress.
JD Grafton
Concrete Answers for Flooring Problems
[email protected]
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RE: JD's ref: RH and MVER conversion explanation - CC Solutions - 03-25-2013, 06:26 AM