Standard Test Method for Determining Relative Humidity in Concrete Floor Using in situ Probes. Apparatus – Humidity Probe and Digital Meter Accuracy ± %. ASTM F ASTM F RH (Relative Humidity). Testing Protocol: ASTM Abstract: Significance and Use. Moisture permeating from concrete floor slabs. 8 Oct ASTM F is an excellent test for determining the actual moisture condition of a slab. As a result, this type of test is recommended by many.

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Essentially, the instructions guide us to: Your email address will not be published. Know the required depth of the test holes. As concrete dries, moisture migrates from the bottom of the slab to the surface where it can evaporate away.

Hedenblad states that the waiting time is to overcome the effects of drilling the concrete has on the conditions within the hole created for the test.

Have you heard about the change in ASTM F2170 from 72hrs to 24hrs?

It has been believed that the change in the desiccant weight could be translated into a moisture ratio for the concrete beneath. 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. Can you please let me know your recommendation on this? F goes on to instruct us to: We use cookies for shopping cart functionality, to personalize content and ads, to provide social media features and to analyze our traffic.

October 31, at 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.

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You consent to our cookies if you continue to use our website. And moisture can still be an issue at grade so concrete foundations must be designed to include proper moisture drainage.

Check job site conditions.

Have you heard about the change in ASTM F from 72hrs to 24hrs?

The V2170 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.

As a result, this type of test is recommended by many international standards including ASTM, British Standards, and most Scandinavian standards, as well as being specified by floor covering, coating and adhesive manufacturers worldwide.

All sensors must be calibrated no less than 30 days prior to use. Repairs Calibration Register Your Product. Thanks for the question.

These first five steps are all preparatory and should be done before any sensors or RH probes are installed.

In this way, in situ measurement provides a composite picture of overall slab moisture levels, and provides the data necessary to make business decisions regarding flooring installations. 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. Map your sensor count and location. September 6, at As asgm professional knows, ASTM standards are established to help guide industry testing and also to help ensure standardized best practices to protect both the installer and the consumer.

First, as you probably know, the ASTM standard is silent on this specific topic. Leave a Reply Cancel aatm Your email address will not be published. January 9, at RH Testing and Reporting Drill and aztm the test holes.

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When To Test Concrete To ASTM F2170?

These requirements for the standard apply regardless of the RH test method being used. The depth is calculated to the bottom of the test hole the location of the installed RH sensor or probe.

Some calibration restrictions may apply, so read the standard carefully to be sure your test equipment qualifies for the most recent standard. At this point, if one test fails, they all fail. If we drill a hole and place a probe immediately, we need to ask ourselves if we are really following the standard and whether we are actually getting meaningful results, or are these results indeed affected by drilling?

This can only be done with reusable relative humidity probes that can be removed after one hour and reinserted at t2170 time in the future to ensure accurate results. Customer Service Contact Us Returns. The total area of astj slab and the number of test holes must be recorded on your report.

A moisture map of the entire floor can be built up, showing how wet the slab is and where the wettest locations are. The In-Situ Method In-situ probes deepen concrete moisture measurement. For most RH testing systems, this includes cleaning any debris out of the test hole and inserting the necessary liner in the hole.

Events News Technical Articles. The only thing we recommend is that you ensure that there is a 2f170 seal between the sensor body and the concrete wall.