As a general contractor or subcontractor working on a concrete structure, one of the most important tasks is ensuring that the concrete has been properly cured and its quality has been tested according to applicable standards. This is of the utmost importance for quality control and quality assurance purposes. Equally important is selecting an appropriate and accurate method for monitoring the strength of in-place concrete. Unfortunately, popular methods of testing concrete quality, especially compressive strength, are frequently subject to discrepancies. …