#Login Register
Heat, move air, shotblast = lower results
  • 0 Vote(s) - 0 Average


08-07-2013, 12:35 PM #1
eaadams Concrete Moisture Expert *****
Status: Offline Posts:591 Threads:85 Joined:Jul 2010
All tests done with Wagner 4.0.

Date / test site / RH / Temp

7-11 / #1 / 94 / 73
7-17 / #1 / 94 / not recorded
[heat turned on, air moved, floor received a light shotblast to a CSP of no more than 2]
7-30 / #1 / 94 / 79
8-07 - no test

7-11 / #2 / 96 / 73
7-17 / #2 / 91 / not recorded
[heat turned on, air moved, floor received a light shotblast to a CSP of no more than 2]
7-30 / #2 / [no reading / debris]
[hole vacuumed out of debris @ time of test]
8-07 - no test

7-11 / #3 / 91 / 74
7-17 / #3 / 99 / not recorded
[heat turned on, air moved, floor received a light shotblast to a CSP of no more than 2]
7-30 / #3 / 99 / 79
8-07 / #3 / 94 / 76

7-11 / #4 / 92 / 72
7-17 / #4 / 92 / not recorded
[heat turned on, air moved, floor received a light shotblast to a CSP of no more than 2]
7-30 / #4 / 91 / 79
8-07 / #4 / 91 / 75

7-11 / #5 / 99 / 72
7-17 / #5 / 99 / not recorded
[heat turned on, air moved, floor received a light shotblast to a CSP of no more than 2]
7-30 / #5 / 94 / 79
8-07 - no test


Obviously the slab temp went up when we cranked the HVAC. I think removing the old adhesive with the light shotblast helped a lot to let moisture out just over one month.

09-01-2013, 07:56 AM #2
CC Solutions Concrete Moisture Evangelist *******
Status: Offline Posts:1,065 Threads:69 Joined:Dec 2009
You had three 'no-tests' on 8/7. It would help to see what those probes read.

Were the probes acclimated for 72 hours on the first test date of 7/11? If not we should discount those readings.

When the slab temp rises we expect to see a decrease in relative humidity. Additional readings would help indicate a trend. Another helpful bit of information would be ambient conditions and whether the HVAC is constantly on or just being run sporadically. Is the building envelope completed and sealed?

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








Possibly Related Threads...
Thread / Author Replies / Views Last Post
7 Replies 17,455 Views
Last Post by Rubensgt40
05-09-2012, 04:35 PM
11 Replies 27,833 Views
Last Post by CC Solutions
10-28-2011, 02:12 PM

Users browsing this thread:
1 Guest(s)