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Measuring Moisture in Concrete

by Ken Trimber, KTA-Tator, Inc.

Excessive moisture in cementitious substrates can cause coatings to fail, and surfaces to be disfigured from stains or efflorescence. Moisture problems can occur in poured-in-place concrete pre-cast, tilt-up, and CMU (concrete masonry units). Methods for determining the moisture content are presented, including relative humidity probes, anhydrous calcium chloride, plastic sheet tests, and a variety of electronic instruments.

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2 comments

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Mika Mack, 2/16/2017, 8:35 PM

Outstanding information on concrete and emphasizes the importance of w/c quality

John McCredie, 12/21/2015, 7:14 AM

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