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.
|Published (Last):||15 April 2010|
|PDF File Size:||10.34 Mb|
|ePub File Size:||9.98 Mb|
|Price:||Free* [*Free Regsitration Required]|
10 Guidelines for ASTM F Compliance
Section 11 of ASTM F details the requirements of each report, including f217 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.
Concrete absorbs water vapor from the air under high ambient humidity; concrete releases more water vapor when the humidity of the surrounding air is ff2170.
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. In situ moisture measurement systems are evolving rapidly as a result of ATSM F and reflect the industry realities of the concrete installation business. Do you really know your F? There is a potential for condensation to appear atsm the sensor during the test period, due to the high relative humidity within the concrete until the concrete has sufficiently dried.
Be sure to familiarize yourself with ASTM F and choose the best concrete moisture test method for the job. F goes on to instruct us to: If f270 forward to 1: How do you handle this problem? Note that the liner requirements have been updated and the hole is to be fully lined to meet the ASTM standard.
You consent to our cookies if you continue to use our website. ASTM F is an excellent test for determining the actual moisture condition of a slab. We have people who asgm the Rapid RH on shallow pours. Leave a Reply Cancel reply Your email address will not be published.
So, do you know really know your F?
At this stage, the probes can be removed and the sleeves capped until further testing is required before mitigation can be carried out. Finally, for best results, the combination of ASTM F non-destructive moisture content testing and F in-situ relative humidity testing allows for a more complete picture of the moisture conditions of the slab. For flooring and concrete professionals, ASTM F provides the standard for using relative humidity RH testing when measuring moisture content in concrete slabs.
As ff2170 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.
asttm Events News Technical Articles. Each hole must have a liner that isolates the sensor from ambient conditions, and sensors asfm have NIST-traceable calibration. This process requires time and quantifiable concrete moisture measurements to verify. F requires three test holes for the first ft 2 and, at least, one additional hole for each additional ft 2.
Does the finish roof product have specifications for testing the concrete deck? December f21170, at 3: RH Testing and Reporting Drill and prepare the test holes.
Sub-grade water vapor can permeate even well-mixed and applied slabs. Some calibration restrictions may apply, so read the standard carefully to be sure your test equipment qualifies for the most recent standard. In-situ probes deepen concrete moisture measurement.
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?
When To Test Concrete To ASTM F2170?
The total area of the slab and the number of test holes must be recorded on your report. For most RH testing systems, this includes cleaning any debris out of the test hole and inserting the necessary liner in the hole.
If condensation occurs during the test period, then the sensor will continue to indicate that the slab is wetter than it actually is, even if the concrete has subsequently dried.
Relative humidity RH in a concrete slab can fluctuate with environmental changes.
Map your sensor count and location. The readings will remain high until the sensor is allowed to dry in fresh air. The In-Situ Method In-situ probes deepen concrete moisture measurement. Repairs Calibration Register Your Product.