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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I would verify that the hole depths are consistent and that environmental conditions are at service conditions. How do you handle f170 problem? The initial ASTM F for in situ RH testing was established inafter continuing research at Scandinavian universities in the s identified the exact specifications for conducting a reliably accurate RH test—placing the test probe at 40 percent depth for slabs poured on grade or 20 percent for slabs drying from both sides.
By testing non-destructively per ASTM F, the asfm can get an instant and precise evaluation of the moisture conditions within 1. Each hole must have a liner that isolates the sensor from ambient conditions, and sensors must have NIST-traceable calibration. Once you find out the methodology they require to meet warranty, Asfm would reach out to someone within RCI in your area to conduct the tests.
Updated ASTM F Reflects the Newest Science about RH Testing | Wagner Meters
For flooring and concrete professionals, ASTM R2170 provides the standard for using relative humidity RH testing when measuring moisture content in concrete slabs. Contact My Account 0 items Customer Service Contact Us Returns.
This site uses Akismet to reduce spam. June 9, at 1: Until now, the ASTM F standard has required a hour waiting period between drilling the test holes where the RH probes are placed and taking official RH measurements. You consent to our cookies if you continue to use our website. At this stage, the probes can be removed and the sleeves capped until further testing is required before mitigation can be carried out.
And installers are finding results are more accurate and more dependable with RH testing. Added 08 Oct Author: In celebration of the New Year, we will be closing early at I hope this helps.
When To Test Concrete To ASTM F2170?
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 f1270 that might have higher moisture tolerances. Your email address will not be published.
December 27, at 3: In-situ concrete moisture testing places sensors, or probes, inside the slab itself. It has been believed that the change in the desiccant weight could be translated into a moisture ratio for the concrete beneath.
The first thing I would look at is the assembly that you are installing.
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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. Preparation Confirm your ast method equipment meets specifications.
F requires three test holes for the first ft 2 and, at least, one additional hole for each additional ft 2.
Thanks for the question. General contractors must bear in mind two interactive processes when they are looking at construction schedules: These requirements for the standard apply regardless of the RH test method being used. We also will not be shipping on these days, but will resume shipping on Tuesday, January 2nd. And moisture can still be an issue at grade so concrete foundations must be designed to include proper moisture drainage.
No other concrete moisture test is as fast or as accurate as the in situ RH test. Without it, even a well-dried and functioning foundation can end up with concrete slab moisture problems.
Use our checklist to record and report the RH readings. Please login or create an account. At this point, if one test fails, they all fail.
This site uses Akismet to reduce spam. As concrete dries, moisture migrates from the bottom of the slab to the surface where it can evaporate away. That being said, I have heard a couple of different methods people are using. Leave a Reply Cancel reply Your email address will not be published. RH Testing and Reporting Drill and prepare the test holes. Other methods typically involve taking measurements only at the surface of the slab.
September 6, at