Using Concrete Maturity Testing to Optimize Road Opening Timing

Status:  Complete
Report Date:  04/25/2013

Summary:

Researchers developed strength-maturity relationships in concrete that allow contractors, field personnel and materials engineers to reduce the sampling and testing necessary to estimate the strength of concrete pavement mixes that have high supplementary cementitious materials content and low water-cement ratios. Overall results showed that MnDOT can use the maturity method to accurately predict the strength of portland cement concrete. Researchers also developed a database of concrete mixes and their associated maturity curves, created a draft construction specification and produced a draft laboratory manual detailing the use of maturity curves for portland cement concrete pavement construction projects.

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