Field study of concrete maturity methodology in cold weather

The objective of this study was to assess the reliability and potential benefits of using the concrete maturity method in cold weather. This paper reviews the concrete maturity method, describes the technology and field observations, and discusses potential benefits of using concrete maturity in cold climates. The concrete maturity method is based on the idea that concrete strength development is strongly correlated with the curing temperature history. Modern sensor and processing devices (loggers) are able to measure and record the temperature of concrete over time. This information could be used to predict concrete strength over time. Findings from a case study in application of the maturity method in an industrial construction project in Edmonton, Alta., Canada indicated a significant potential time and cost reduction. The study also indicated that the concrete maturity methodology enables reliable quality control through the accurate estimation of in-place concrete strength. The real time information available through the concrete maturity method allowed the project manager to be proactive in managing heating and protection to ensure that the proper level of concrete strength was developed.