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RH and MVER Concrete Moisture Conversion table
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02-05-2011, 10:08 AM #3
CC Solutions Concrete Moisture Evangelist *******
Status: Offline Posts:1,065 Threads:69 Joined:Dec 2009
There is NO CORRELATION between RH and MVER.

Think of it this way:

You have a dry slab, 50 years old, suspended, RH is 55%.
You wet that slab for 24 hours, flood it.
The slab RH is still 55%, the surface water soaked in 1/4" to 1/2" or so.
A CaCl test will read about 12lbs placed on that wet surface.

Conversely a slab in a very dry building laying on a wet subsoil can read 3lbs MVER because the surface is very dry, but the lower portion of the slab is very wet. RH readings can easily reach 90%+. Cover that slab with a moisture sensitive flooring and the concrete will continue to absorb water and RH will climb even higher.

I have personally seen these scenarios, they are very real.


JD Grafton
Concrete Answers for Flooring Problems
JGrafton@ccsolves.com








Messages In This Thread
RH and MVER Concrete Moisture Conversion table - jpeters - 01-28-2011, 03:49 PM
RE: RH and MVER Concrete Moisture Conversion table - eaadams - 02-03-2011, 12:10 PM
RE: RH and MVER Concrete Moisture Conversion table - CC Solutions - 02-05-2011, 10:08 AM

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