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Author's note: After meeting 121 publication deadlines, this will be my last regularly scheduled TECHNICAL. TALK. This column dates to the Spring of 1988, and was never intended to focus [...]

Technical talk has often referred to the adverse effect of non-standard testing procedures on compressive strength tests. We've blamed the specifier and testing laboratories (and rightfully so) for the problems [...]

In several recent issues of Concrete Products, the problem created by non-standard cylinder tests and the misinterpretation and mis-use of test results were the subjects of Technical Talk. On almost [...]

There are certain 'common problems' regarding concrete performance that always seem to be with us. That's true because the practices that cause them also always seem to be with us. [...]

Test results from 'invalid cylinder tests' may not be used for evaluation of concrete for acceptance. At least that's what is stated in ACI 301, Specifications for Structural Concrete Buildings. [...]

The hottest season of the year will shortly be with us. As usual, that will increase the frequency of low strength test problems. The additional water required to attain the [...]

A satisfactory concrete project starts with a specification that is clear and concise. There should be no surprises and as little opportunity for misunderstanding as possible. Where there are deviations [...]