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. Last previous edition approved in as. F DOI: / F/FA. 2 For referenced ASTM standards, visit the ASTM . ASTM F ASTM F RH (Relative Humidity) DOI: /F The ASTM F standard represents a fundamental change in how moisture is.
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Use our checklist to record and report the RH readings. Depress SET Button to check settings. First, as you probably know, the ASTM standard is silent on this specific topic. 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.
Relative humidity RH in a concrete ast can fluctuate with environmental changes. This process requires time and quantifiable concrete moisture measurements to verify.
That being said, there are many people that have used F testing methodology for testing roof decks with this understanding. In situ moisture measurement systems are evolving ast as a result of ATSM F and reflect the industry realities of the concrete installation business.
RH Testing and Reporting Drill and prepare the test holes. June 8, at 1: If not, call their technical team and ask the questions.
Ligno-Tec RH Concrete Moisture Meter
I would verify that the hole depths are consistent and that environmental conditions are at service conditions. 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.
As concrete dries, moisture migrates from the bottom of the slab to the surface where it can evaporate away. 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.
Ligno-VersaTecpin-pinless-RH, meter only. Be sure to familiarize yourself with ASTM F and choose the best concrete moisture test method for the job.
June 9, at 1: If i have an area of approx sq ft and have done the required testing for the area, and 5 fail and c2170-11 pass does the whole area fail? The standard provides precise guidelines for RH testing methods.
Ligno-Tec RH Concrete Test Conforms to ASTM F
All sensors must be calibrated no less than 30 days prior to use. In-situ probes deepen concrete moisture measurement. Without it, even a well-dried and functioning foundation can end up with concrete slab moisture problems. No pin alignment of the cable needs to be fitted.
For extended reach, a cable up to 50ft long can be added. The total area of the slab and the number of test holes must be recorded on your report. 2f170-11 hope this helps.
10 Guidelines for ASTM F Compliance
And moisture can still be an issue at grade so concrete foundations must be designed to include proper moisture drainage.
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.
Many contractors use vapor barriers directly qstm the slab to slow moisture permeation. October 27, at 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. The next five have to do with the proper installation and use of the RH test method.
10 Guidelines for ASTM F2170 Preparation and Testing
These requirements for the asttm apply regardless of the RH test method being used. RH BluePeg can be used as a measuring device for ambient relative humidity and temperature or placed in a measuring sleeve, which can be inserted into a predrilled hole in the testing area. The cap fits perfectly and is as flat as can be. Check job site conditions.
December 27, at 3: Measuring moisture is our expertise. Thanks for the reply, Patrick. If you forward to 1: ASTM F formally recognizes the use of in situ probes as a means of conducting relative humidity testing.
Once you find out the methodology they require to meet warranty, I would reach out to axtm within RCI in your area to conduct the tests.