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Testing Moisture in Concrete

The Layman’s Guide to Testing Moisture In Concrete

by Charles Milledge
Some days I think I spend about half of my work day answering questions about concrete moisture and test procedures.

Anhydrous Calcium Chloride Moisture Vapor Testing – The CaCl Test

ASTM – F1869-11 Standard Test Method for Measuring Moisture Vapor Emission Rate of Concrete Subfloor using Anhydrous Calcium Chloride is the guide that needs to be followed to correctly set a CaCl test. Here are the boiled down basics for doing this correctly. Read More

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Concrete Control Joints & Cracks

The Behavior of Concrete Slabs With Control Joints and Cracks
by A. Kester

A lot of architects, contractors, and even engineers, do not have a good understanding on the behavior of concrete slabs-on-ground (SOG). I am just one structural engineer and these are my thoughts based on my research and experience. I have worked with concrete slab construction my entire career, and have done a lot of investigations of cracks and settlement damage to SOG, and have a pretty good general understanding of them. This is a review of the subject and I hope it helps people in the flooring industry in dealing with different types of slabs with control joints and cracks. Read More