Civil + Structural Engineer: Wireless concrete monitoring

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Published on Civil + Structural Engineer in January 2019.

The maturity method, often simply referred to as maturity, is a way of evaluating new concrete’s in-place strength by relating time and temperature measurements to actual strength values. Typically, in-situ strength estimation is achieved through standard test methods, which involve flexural or compressive tests of beam or cylinder specimens. However, concrete in the field does not always gain strength at the same rate as test specimens. Maturity testing addresses this guesswork and can prove if onsite concrete has achieved required strength and whether or not formwork removal and load application is feasible.

In the past, maturity testing has been performed by placing sensors into fresh concrete and then connecting a data logger or other maturity reader directly to each sensor to retrieve and analyze the data. In recent years, Bluetooth technology has been incorporated into concrete maturity systems to ease data collection and allow for wireless sharing.

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