• 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Rh readings

#1
Ray,
Am I right in assuming that the closer the RH of the Concrete and the RH of the Building enviroment( Bldg with HVAC on), the less likely there will be a moisture problem? I know some manufacturers say that the RH should be no more that 70 percent, but isn't it the difference in the Rh of the concrete and the RH of the air the main reason there may be problems?


Dennis McKenzie
Reply

#2
(10-13-2008, 10:11 AM)dennismck Wrote:  Ray,
Am I right in assuming that the closer the RH of the Concrete and the RH of the Building enviroment( Bldg with HVAC on), the less likely there will be a moisture problem? I know some manufacturers say that the RH should be no more that 70 percent, but isn't it the difference in the Rh of the concrete and the RH of the air the main reason there may be problems?


Dennis McKenzie

Dennis,
The RH probe measures the relative humidity at the apex of the drying curve of the concrete. The ambient RH has a long term correlation between the the RH of the concrete. The lower the ambient RH the faster the moisture dissipates out of the slab. The numbers established by the manufacturers are really the RH moisture content after the slab goes into equalibrium. Each product can only withstand a certian level of moisture content of the slab and the number is the maximum percentage of relative humidity that product can tolerate.
Regards
Rayt
Reply


Possibly Related Threads...
Thread Author Replies Views Last Post
  High Rapid RH readings?? ddemento 49 81,083 12-08-2011, 06:03 PM
Last Post: Ernesto
  A GC wants a second opinion, and the first readings were Wagner's! CC Solutions 2 6,796 08-14-2011, 07:56 PM
Last Post: Ernesto
  Multiple Readings? GregR 6 13,702 11-19-2010, 05:26 PM
Last Post: CC Solutions

Digg   Delicious   Reddit   Facebook   Twitter   StumbleUpon  


Users browsing this thread:
1 Guest(s)