March 1992 Table of Contents

Problem Clinic Small-Diameter Cores More Likely to Yield Low Strengths

When there's a question about in-place strength of concrete as a result of low cylinder test results, cores anywhere from 1 1/2 inches to 4 inches in diameter are taken. Is there any disadvantage in taking the smaller cores? Read more

Problem Clinic Bad-Smelling Mixing Water May Not Harm Concrete

We're building an airport runway in Florida. Water from a local well is to be used as mixing water but it has a strong sulfur smell like rotten eggs. Will whatever is causing the smell affect concrete properties? Should we be looking for a different water Read more

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