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measurement in a cold slab
11-05-2013, 12:08 PM
Post: #16
RE: measurement in a cold slab
I'm dragging this back. Now that it is the cold season I am getting RH tests that seem to be dropping and they seem to be more pronounced in cold buildings.

Are there any graphs showing: Concrete RH% vs Amient Air Temp or RH
Are there any graphs showing: Concrete RH% vs Concrete Temp

I know, I know, ASTM says blah blah blah, but I'm interested in the why. Basicly I am looking for how to say to someone WHY they have to have to be at service temp other than "it is ASTM". I want to be able to say
"well if you test with a colder room you will get a [lower/higher] concrete RH result"
or
"well if you test with a colder slab you will get a [lower/higher] concrete RH result"

[Image: psychrometric_chart.gif]

[Image: Relative_Humidity.png]

Essentially I am worried that RH test results perhaps can be skewed just like CaCl by environmental factors but just in a different way.
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Messages In This Thread
measurement in a cold slab - Noweare - 12-04-2012, 02:45 PM
RE: measurement in a cold slab - CCR - 12-05-2012, 05:47 AM
RE: measurement in a cold slab - Noweare - 12-05-2012, 10:59 AM
RE: measurement in a cold slab - eaadams - 12-19-2012, 01:22 PM
RE: measurement in a cold slab - CCR - 12-19-2012, 02:12 PM
RE: measurement in a cold slab - Ernesto - 12-19-2012, 03:18 PM
RE: measurement in a cold slab - eaadams - 12-19-2012, 03:19 PM
RE: measurement in a cold slab - Ernesto - 12-20-2012, 03:37 PM
RE: measurement in a cold slab - eaadams - 12-20-2012, 04:23 PM
RE: measurement in a cold slab - Ernesto - 12-20-2012, 06:23 PM
RE: measurement in a cold slab - eaadams - 12-21-2012, 04:29 PM
RE: measurement in a cold slab - eaadams - 01-18-2013, 05:02 PM
RE: measurement in a cold slab - eaadams - 11-05-2013 12:08 PM
RE: measurement in a cold slab - Ernesto - 04-15-2014, 02:30 PM