The authors were responsible for conducting maturity-based quality assurance testing for concrete construction for the Carl A. Kroch Library at Cornell University in Ithaca, New York. This underground structure required 7,700 cubic meters of cast-in-place concrete, all of which was monitored for in-place temperature during the curing period. Over 400 thermocouples were embedded in the footings, slabs, walls, columns, and test cylinders, providing over 150,000 separate measurements of concrete temperature. This information was collected automatically by programmable data recording devices, analyzed with both proprietary and user-developed software, and distributed to the construction management team by means of computer-generated reports. To effectively implement the maturity concept at this scale, and to do it fast enough to provide timely information to the design/construction team, computers were essential.

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