How is early-age thermal cracking analyzed and controlled in large concrete pours?

Early-age thermal cracking analysis involves: (1) Heat generation modeling - adiabatic temperature rise curves for mix, (2) Thermal analysis - finite element or simplified methods for temperature distribution over time, (3) Stress analysis - restraint from existing concrete or formwork creates tension as cooling occurs, (4) Cracking risk assessment - comparing tensile stress to developing tensile strength. Control measures: low-heat cement/pozzolans, aggregate precooling, liquid nitrogen cooling, insulated formwork, post-cooling pipes, and pour lift limitations. Target maximum temperature differential <20C.