Temperature Predictor for Pile Caps & Mass Foundations
Estimate peak temperatures and thermal differentials in mass concrete pours. Identify risks of delayed ettringite formation (DEF) and early-age thermal cracking before casting.
Location & Season
Select a city to determine ambient temperatures for your casting location.
Concrete Mix
Section Details
Why does this matter?
DEF Risk: When peak concrete temperature exceeds ~70°C, delayed ettringite formation can cause expansion and cracking years later.
Thermal Cracking: Large temperature differentials (>25°C) between the core and surface cause restraint stresses that can exceed the tensile strength of young concrete.
Hot Climates: High ambient and placing temperatures significantly increase peak temperatures in mass pours. Mitigation strategies include ice cooling, SCM replacement, and insulation management.
Applicable to
- Pile caps
- Mass foundations & raft slabs
- Ground-bearing slabs >300mm
- Transfer slabs
Disclaimer: This tool provides indicative estimates for preliminary assessment purposes only. Results are based on simplified 1D finite difference modelling with empirical calibration data and should not be relied upon for detailed design or construction decisions. Durable Designs accepts no liability for any loss, damage, or consequence arising from the use of this tool. For project-specific thermal analysis, independent specialist verification is essential. All calculations are subject to the accuracy of user-provided inputs and the limitations of the underlying model assumptions.