Maturity testing is a simple and reliable way of estimating early-age strength of concrete following ASTM C1074 and AASHTO T 276. Accurate predictions of strength facilitate safe removal of formwork, and reduce delays in putting pavements and structures into service. Concrete gains strength over time and generates heat as it cures. Logging temperatures over time of in-situ concrete, then applying standard mathematical equations to the data allows a correlation to be established with laboratory samples of known strengths.
Maturity Meters collect temperatures from probes buried in the fresh concrete and log them together with the time collected. A value is calculated with this data as either equivalent age or time-temperature factor, and is used to estimate compressive strength.