*There are different methods to determine concrete maturity. Over the years, the methods have been refined further and further parameters have been added. We have compiled the most common methods and their functions for you:*

*Maturity according to Saul (also Saul/Nurse)*

*The Freiesleben Hansen & Pedersen method according to Arrhenius**The weighted maturity according to de Vree*

*At the end of the article you will also find a table where you can compare the differences at a glance.*

## 1. Degree of maturity according to Saul (also Saul/Nurse)

## The formula is as follows:

The temperature-time factor is also shown in this graph.

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## The Freiesleben Hansen & Pedersen method according to Arrhenius

- The composition of the cement and its fineness
- The mixing ratio between water and cement
- Any mineral admixtures
- The degree of hydration

## The formula is as follows:

## The weighted maturity according to de Vree

- the C-value/weighting factor for the cement type, which depends on the cement composition
- the nk value, which represents a nonlinear effect of temperature on strength development

C: C-value of the cement
Nk: temperature-dependent parameter for the curing interval