One of Bruce's old articles. I wonder how he figured that number out? Maybe by weighing a jar of sand and then a flooded jar of sand and extrapolating the number?
There must be some sort of algorithm for that.
COD, I realize I am showing up very late to this party, but I did want to point out that ASTM F2170 requires the space to be acclimated (HVAC on) prior to testing for relative humidity. This may have been skewing your data.
ARDEX Engineered Cements
I just had a GC in Los Angeles tell me they can't get the building acclimated because they can't get heat on until they get the occupancy permit and cant get occupancy permit until flooring is done ....
sounds crazy to me.
Yea, they try that here as well. But I checked with the local power company and they said you can get a temporary permit.