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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Many contractors use vapor barriers directly under the slab to slow moisture permeation.
10 Guidelines for ASTM F Compliance
You consent to our cookies if you continue to use our website. Your email address will not be published. This can only be done with reusable relative humidity probes that can be removed after one hour and reinserted at any time in sstm future to ensure accurate results.
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Each test hole must asmt drilled to the depth determined at Step 5 above v2170 10 of ASTM F and properly prepared. 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. As said, there is good reason why this exact standard methodology is used. While any professional must understand 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 June 9, at 1: Logically then, moisture levels at the bottom of a slab will read higher from those at the surface.
In situ moisture measurement systems are evolving rapidly as a result sstm ATSM F and reflect the industry realities of the concrete installation business. 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. 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.
Concrete slab moisture problems can cause floor covering delamination, peeling, blistering, staining and sweating. So, do you know really know your F? Map your sensor count and location.
ASTM F Explained – ASTM F Information
April 7, at 3: 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. October 27, at This site uses Akismet to reduce spam. In-situ probes deepen concrete moisture measurement. The total area of the slab and the number of test holes must be recorded on your report.
The In-Situ Method F2710 probes deepen concrete moisture measurement. 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.
This is a welcome development as accurate results can be attained in a shorter time. The first thing I would look at is the assembly that you are installing.
Section 11 of ASTM F details the requirements of each report, including test hole location, dates and times of measurements, RH reading, temperature reading, and any other conditions that might impact the RH reading see section 11 for complete reporting requirements.
In-situ concrete moisture testing places sensors, or probes, inside the slab itself. ASTM F formally recognizes the use of in situ probes as a means of conducting relative humidity testing.
Is this acceptable or compromise the test? The standard provides precise guidelines for RH testing methods. 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.
10 Guidelines for ASTM F2170 Preparation and Testing
Please login or create an account. I would verify that the hole depths are consistent and that environmental conditions are at service conditions.
All sensors must be calibrated no less than 30 days prior to use. The readings will remain high until the sensor is allowed to dry in fresh air. We recommend placing the serial number decal which also helps track certification of each sensor on the asym test hole on the mapped report. Be sure to familiarize yourself with ASTM F and choose the best concrete moisture test method for the job. The test hole depth is not a fixed depth, but it must be calculated based on slab thickness and number of drying sides: For most RH testing systems, this includes cleaning any debris out of the test hole and inserting the necessary liner in the hole.
When To Test Concrete To ASTM F2170?
General contractors must bear in mind two interactive processes when they are looking at construction schedules: Asym standards are revised, it is a good time to make sure we are up to date and following the procedure to best practice.
The basics remain the same, and for good reason. The next five have to do with the proper installation and use of the RH test method.
Without it, even a well-dried and functioning foundation can end up with concrete slab moisture problems. Jason, I appreciate this means to contact you. Some calibration restrictions may apply, so read the standard carefully to be sure your test equipment qualifies for the most recent standard.
That being said, there aetm many people that have used F testing methodology for testing roof decks with this understanding.