March 16, 2020 0 Comments

ASTM F formally recognizes the use of in situ probes as a means of conducting relative humidity testing. In fact The Standard The In-Situ Method In-situ concrete moisture testing places sensors, or probes, inside the slab itself . This test method covers the quantitative determination of percent relative testing. The ASTM F standard represents a fundamental change in how. This standard is issued under the fixed designation F; the number immediately 1 This test method is under the jurisdiction of ASTM Committee F06 on.

Author: Tetaur Kigataur
Country: Saint Kitts and Nevis
Language: English (Spanish)
Genre: Medical
Published (Last): 13 August 2015
Pages: 175
PDF File Size: 18.71 Mb
ePub File Size: 12.95 Mb
ISBN: 261-2-34073-442-6
Downloads: 18757
Price: Free* [*Free Regsitration Required]
Uploader: Voodoobar

October 31, at It has been believed that the change in the desiccant weight could be translated into a moisture ratio for the concrete beneath. The MVER is defined as the rate of water vapor emissions from the surface asgm concrete and is determined with the use of a desiccant material sealed to the slab surface for a specified time period, then measured.

10 Guidelines for ASTM F2170 Preparation and Testing

Your email address will not be published. June 8, at 1: The test hole depth is not a fixed depth, but it must be calculated based on slab thickness and number of drying sides: Be sure to familiarize yourself with ASTM F and choose the best concrete moisture test method for the job. We recommend placing the serial number decal which also helps track certification of each sensor on the corresponding test hole on the mapped report.

And moisture can still be an issue at grade so concrete foundations must be designed to include proper moisture drainage.

If not, call their technical team and ask the questions. Section 9 of the standard requires that both the slab and the ambient air above it must be at service conditions for a minimum of 48 hours before testing.


First, I have to state that F is specified for interior applications that are under consistent ambient air controls. In-situ concrete moisture testing places sensors, or probes, inside the slab itself.

Concrete absorbs water vapor from the air under high ambient humidity; concrete releases more water vapor when the humidity of the surrounding air is low. The next five have to do with the proper installation and use of the RH test method. Ttest standard provides precise guidelines for RH testing methods. Meeting this standard provides the groundwork for limiting moisture-related flooring problems and the many liabilities and mitigation problems that can result from excess moisture.

Know the standxrd depth of the test holes. This will NOT be valid for ASTM compliance, but can certainly provide a target timeline for schedule decisions or for choosing alternate adhesive or flooring astj that might have higher moisture tolerances.

All sensors must be calibrated no less than 30 days prior to use. Relative humidity RH in a concrete slab can fluctuate with environmental changes. Learn aastm your comment data is processed. First, as you probably know, the ASTM standard is silent on this specific topic.

That being said, Zstm have heard a couple of different methods people are using. Use our checklist to record and report the RH readings. Note that the liner requirements have been updated and the hole is to be fully lined to meet the ASTM standard.

For flooring and standaard professionals, ASTM F provides the standard for using relative humidity RH testing when measuring moisture content in concrete slabs. I hope this helps. December 27, at 3: Surface-based test results will fluctuate, even more, under these changes in environmental conditions. Thanks for the reply, Patrick.

Concrete slab moisture problems can cause floor covering delamination, peeling, blistering, staining and sweating. I would verify that the hole depths are consistent and that environmental conditions are at service conditions.


Thanks for the question. These requirements for the standard apply regardless of the RH test method being used. September 6, at F requires three test holes for the first ft 2 and, at least, one additional hole for each additional ft 2. The first thing I would look at is the assembly that you are installing.

10 Guidelines for ASTM F Compliance

At this point, if one test fails, they all fail. Is this acceptable or compromise the test?

Leave a Reply Cancel reply Your email address will not be published. Preparation Confirm your test method equipment meets specifications. Sub-grade water methkd can permeate even well-mixed and applied slabs. January 9, at In that case, builders did not allow the methos sufficient time for concrete moisture levels to equilibrate reach equilibrium moisture content according to relative humidity RH.

In celebration of the New Year, we will be closing early at UPS peak season may cause delays.

With all areas of ASTM-compliant RH testing, f210 is key and data integrity must also be the focus for each flooring professional. Once you find out the methodology they require to meet warranty, I would reach out to someone within RCI in your area to conduct the tests. April 7, at 3: September 2, at 9: RH Testing and Reporting Drill standare prepare the test holes. Many contractors use vapor barriers directly under the slab to slow moisture permeation. Logically then, moisture levels at the bottom of a slab will read higher from those at the surface.