Technical support - temperature matched curing
Temperature profiling and temperature matched curing are two key services offered by the Hanson Cement technical services team.
They are used to demonstrate that the concrete complies with the thermal criteria and that its strength development does not impinge on the construction programme.
Temperature profiling and temperature matched curing can be beneficial in precast operations to demonstrate the actual in-situ strength of the concrete elements in comparison to cubes cast and cured either at ambient temperatures or at 20?C.
They can also help control early-age thermal cracking, which occurs when the tensile strain – arising from either restrained thermal contraction or a temperature differential – exceeds the tensile strain capacity of the concrete.
Through temperature profiling and temperature matched curing we are able to demonstrate:
- Optimal strike time and lifting of precast elements – potentially improving operational efficiencies, for example the possibility of double casting
- The benefits of replacing part of the Cem I with type II additions/replacements such as Regen GGBS for sulfate resisting applications
- That Regen GGBS gives a lower peak temperature and close temperature profile control, reducing the chance of early-age thermal cracking