ASTM F formally recognizes the use of in situ probes as a means of conducting relative humidity testing. In fact, ASTM F represents a fundamental. ASTM F ASTM F RH (Relative Humidity). Testing Protocol: ASTM Abstract: Significance and Use. Moisture permeating from concrete floor slabs. Standard Test Method for Determining Relative Humidity in Concrete Floor Using in situ Probes. Apparatus – Humidity Probe and Digital Meter Accuracy ± %.

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When concrete is mixed and poured, water vapor migrates from the bottom of the slab to the surface to evaporate. We use cookies for shopping cart functionality, to personalize content and ads, to provide social media features and to analyze our traffic. First, I have to state that F is specified for interior applications that are under consistent ambient air controls. In part, the idea was to assess if it is actually necessary to wait the full 72 hours for an accurate, actionable moisture readings.

In situ moisture measurement systems are evolving rapidly as a result of ATSM F and reflect the industry realities of the concrete installation business. Be sure to familiarize yourself with ASTM F and choose the best concrete moisture test method for the job.

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And moisture can still be an issue at grade so concrete foundations must be designed to include proper moisture drainage. The standard provides precise guidelines for RH testing methods. Map your sensor count and location. June 9, 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: Many contractors use vapor barriers directly under the slab to slow moisture permeation.

We also will not be shipping on these days, but will resume shipping on Tuesday, January 2nd. Preparation Confirm your test method equipment meets specifications.


Concrete slab moisture is a major cause of concrete flooring failure. Contact My Account 0 items Customer Service Contact Us Returns. The research confirmed two key discoveries: After these scientifically-validated specifications were firmly established, ASTM International published a usable standard. You consent to our cookies if you continue to use our website. Satm job site conditions.

This moisture map helps the user determine where it is best to locate the sensors for F These first five steps are all preparatory and should be done before any sensors or RH probes are installed.

In-situ probes deepen concrete moisture measurement. For flooring and concrete professionals, ASTM F provides the standard for using relative humidity RH testing when measuring moisture content in concrete slabs. This process requires time and quantifiable concrete moisture measurements to verify. While any professional must f2107 the exact requirements of standard F the most recent versionthe following are 10 guidelines to help ensure that you have met the criteria laid out in ASTM F 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.

Added 08 Oct Author: The In-Situ Method In-situ probes deepen concrete moisture measurement. With the updated ASTM standard, contractors can now shave two days off any project schedule, just by ensuring the RH test is specified for the f2710, No other test method is as fast or as reliable. This site uses Akismet to reduce spam.

10 Guidelines for ASTM F2170 Preparation and Testing

Note that the liner requirements have been updated and the hole is to be fully lined to meet the ASTM standard. Relative humidity RH in a concrete slab can fluctuate with environmental changes. There is a potential for condensation to appear on the sensor during the test period, due to the high relative humidity within the concrete until the concrete has sufficiently dried.


F requires three test holes for the first ft 2 and, at least, one additional hole for each additional ft 2. UPS peak season may cause delays. January 9, at As any professional knows, ASTM standards are established to help guide industry testing and also to help ensure standardized best practices to protect astk the installer and the consumer. This can only be done with reusable relative humidity probes that can be removed after one hour and reinserted aatm any time in the future to ensure accurate results.

Please login or create an account. The science validating the RH test as the more accurate and reliable test for concrete moisture continues to pile up.

Updated ASTM F Reflects the Newest Science about RH Testing | Wagner Meters

Events News Technical Articles. After properly inserting the RH probes into the concrete slab, general contractors and flooring professionals can expect to make decisions on how to move forward in just 24 hours.

Other methods typically involve taking measurements only at the surface of the slab. Your email address will not be published. Contact My Account 0 items 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.

Learn how your comment data is processed. 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. April f170, at As concrete dries, moisture migrates from the bottom of the slab to the surface where it can evaporate away.