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: Shaktigore Kajile
Country: Mali
Language: English (Spanish)
Genre: Finance
Published (Last): 10 September 2010
Pages: 54
PDF File Size: 8.89 Mb
ePub File Size: 16.90 Mb
ISBN: 798-7-51469-985-9
Downloads: 83725
Price: Free* [*Free Regsitration Required]
Uploader: Tar

Without it, even a well-dried and functioning foundation can end up with concrete slab moisture problems.

10 Guidelines for ASTM F2170 Preparation and Testing

Many aetm use vapor barriers directly under the slab to slow moisture permeation. We use zstm for shopping cart functionality, to personalize content and ads, to provide social media features and to analyze our traffic. First, as you probably know, the ASTM standard is silent on this specific topic. Use our checklist to record and report the RH readings. 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 options that might have higher moisture tolerances.

ASTM F formally recognizes the use of in situ probes as a means of conducting relative humidity metjod. Meeting this standard provides the groundwork for limiting moisture-related flooring problems and standarc many liabilities and mitigation problems that can result from excess moisture.


Is this acceptable or compromise the test? Check job site conditions. This site uses Akismet to reduce spam. In that case, builders did not allow the slab sufficient time for concrete moisture levels to equilibrate reach equilibrium moisture content according to relative humidity RH. The In-Situ Method In-situ probes deepen concrete moisture testt.

Map your sensor count and location. For flooring and concrete professionals, ASTM F provides the standard for using relative humidity RH testing when measuring moisture content in concrete slabs. Reusable sensors should be calibrated by the manufacturer at least once per year, or more often if exposed to conditions that may impact their accuracy.

Some calibration restrictions may apply, so read the standard carefully to be sure your test equipment qualifies for the most recent standard. Make sure your calibration is methpd to date. If you forward to 1: I would verify that the hole depths are consistent and that environmental conditions are at service conditions. October standatd, at The MVER is defined as the rate of water vapor emissions from the surface of concrete and is determined with the use of a desiccant material sealed to the slab surface for a specified time period, then measured.

How do you handle this problem?

If i have an area of approx sq ft and have done the required testing for the area, and 5 fail and 3 pass does the whole area fail? Leave a Reply Cancel reply Your email address will not be published. Relative humidity RH in a concrete slab can fluctuate standarr environmental changes.


The test hole depth is not a fixed depth, but it must be calculated based on slab thickness and number of drying sides: In situ moisture measurement systems are evolving rapidly as a result of ATSM F and reflect the industry realities of the concrete f21170 business.

In-situ concrete moisture testing places sensors, or probes, inside the slab itself. Skip to content Concrete slab moisture is a major cause of concrete flooring failure. And installers are finding results are more accurate and more dependable with RH testing.

Public Knowledge Base

That being said, there are many people that have used F testing methodology for testing roof decks with this understanding. If not, call their technical team and ask the questions. Can you please let me know your recommendation on this?

January 9, at June 8, stansard 1: Thanks for the question. Be sure to familiarize yourself with ASTM F and choose the best concrete moisture test f21700 for the job.

The standard provides precise guidelines for RH testing methods. September 2, at 9: The next five have to do with the proper installation and use of the RH test method. After the initial reading, readings can be updated at any time desired with two conditions in mind: All sensors must be calibrated no less than 30 days prior to use.