From: Thermal and Mechanical Behaviors of Concrete with Incorporation of Strontium-Based Phase Change Material (PCM)
Criteria
Thermal crack index (Icr)
To prevent cracks
Icr ≥ 1.5
To limit cracks
1.2 ≤ Icr < 1.5
To limit harmful cracks
0.7 ≤ Icr < 1.2