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# same maturity = same strength

same maturity = same strength. Maturity according to Saul. The product of curing temperature and time ° C x hours (h) °C.h.

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## same maturity = same strength

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1. same maturity = same strength

2. Maturity according to Saul The product of curing temperature and time ° C x hours (h) °C.h

3. Maturityaccordingto Saul

4. Maturity according to Saul

5. Weighted maturity The product of curing temperature and time, taking account to the temperature sensitivity of the cement (weighting factor)

6. Maturity according to Papadakis en Bresson

7. Maturity formula according To De Vree Rg  10 (C(0,1T - 1,245) – C(-2,245)) / ln C Rg  Weighted maturity in one hour [ °C.h ] T  Average temperature in that hour [ °C ] C  C-value (weighting factor) of the used cement

8. Determination of C-Value 20°C 1 2 4 5 3 65°C 1 2 3 4 5

9. C-value depending on the content of Portland cement clinker

10. Which cement ? Lower temperature lower C-value Higher temperature higher C-value

11. Maturity table Maturity according to De Vree for 1 hour curing time at x°C, for different C-values

12. Maturity computer

13. Thermocouple temperature sensor

14. Thermocouple temperature sensor

15. Thermocouple temperature sensor

16. Thermocouple temperature sensor

17. Thermocouple temperature sensor

18. Thermocouple temperature sensor

19. Calibration curve of a concrete mixture Make 5 test cubes of the concrete mixture 1 2 3 4 5 Measure the weighted maturity in 1 of these cubes Test the compressive strength of the cubes on times depending on the curing rate Range between 8 N/mm² below and 8 N/mm² above target strength At least 2 values below and 2 values above target strength Write down the weighted maturity and the strength of each tested cube

20. Calibration curve of a concrete mixture Plot the values found in a chart Calculate and draw the regression curve Calculate and draw the calibration curve

21. Determination of calibration curve

22. Maturity computer Temperature measurement Maturity measurement Determination of compressive strength Regulating of heating or cooling equipment

23. Housing

24. Housing

25. Regelation heating equipment by maturity computer

26. Precast concrete industrie

27. Precast concrete industrie

28. Climbing formwork

29. Tunnels

30. Mass concrete structure

31. Bridge construction