American Concrete Pavement Association
Note: Either compressive or flexural strength can be used in this web applet but just one must be used uniformly throughout. If less strength or maturity data are available than shown, simply enter the average of your data in the corresponding empty input box for that strength or maturity set.
The maturity method is a means of estimating in-place concrete strength by correlating internal concrete temperature histories in the field to lab developed maturity and strength data. To develop a mixture-specific maturity relationship (curve), the most common practice is to test 3 strength specimens at 5 maturity levels that will completely encompass the anticipated field maturity values while also obtaining the corresponding temperature-time factor (TTF) using maturity sensors embedded in 2 companion specimens placed in the same curing environment as the strength testing specimens. This web applet allows you to provide such data to generate a mixture-specific maturity curve from which field maturity cutoff values for project strength requirements can be determined.
More details on maturity testing, such as development of a TTF if a commercially available maturity sensor is not used and typical form removal and opening strength requirements, are available in ACPA’s IS257P, Maturity Testing of Concrete Pavements: Applications and Benefits.
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