Winter ICF concrete mix: -Step by step (per EOR ACI 306R / CSA A23.1): 1. 14 mm (½”) aggregate – better consolidation in ICF, less segregation 2. Air-entrained mix – freeze/thaw durability 3. Target slump: ≥150 mm (≥6”) – achieved with admixtures, not water. 4. Hot batch water: ~60–80°C (140–175°F) – adjusted at plant as required 5. Concrete temp at discharge: ~10–20°C (50–68°F) 6. Place continuously – minimize exposure and wind loss 7. Cap insulate immediately – top protection is critical 8. Su