ASTM Update Reduces Wait Time for Realitive Humidity Test Results in Concrete

Earlier this month, ASTM International published its revised ASTM F2170, Standard Test Method for Determining Relative Humidity in Concrete Floor Slabs Using in situ Probes. The updated standard reduces the mandatory wait period before obtaining official, documentable results from an in-situ relative humidity (RH) moisture test performed in concrete floor slabs from 72 to 24 hours.