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ASTM F 2170 Standard Test Method for Determining Relative Humidity in Concrete Floor Slabs Using in situ Probes

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Specifications, Standards & Certificates
Standard Test Method for Determining Relative Humidity in Concrete Floor Using in situ Probes
  • Apparatus – Humidity Probe and Digital Meter
    Accuracy ± 2-3%
  • NIST – traceable calibration certificates.
  • Conditioning – Concrete slabs shall be at service temperature and air space above the floor slab shall be at service temp. and RH for 48 hours prior to measuring concrete RH
  • Procedure - Slabs drying from one side, Drill holes 40% depth of concrete. Allow 24 hours to achieve moisture equilibrium within the hole before taking measurements.
  • Minimum of three tests for first 1,000 ft2 and one additional test for each 1,000 ft2
  • Normal placement is one test near the center with others being placed around the perimeter of the room

The complete current edition of ASTM F 2170 is available from the American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken PA 19428.
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