Application of Flake Ice in Concrete Mixing Temperature Control
Application of Flake Ice in Concrete Mixing Temperature Control
, causing thermal expansion. Subsequent cooling induces contraction, typically resulting in structural cracks.25°C. During curing, hydration heat release increases concrete strength – a negligible factor for small structures but critical for dams. This heat can raise concrete temperature by temperature-controlled concreteMass concrete placements for dams and high-rise foundations globally require
.integrated concrete cooling systems) to ensure peak curing temperatures stay within design limits. All such projects demand 7°C–15°C (typically initial concrete temperature must be minimizedTo prevent this, the
Traditional Cooling Limitations
Conventional dam systems embed evaporator coils connected to ammonia refrigeration units. Post-placement, coils extract heat before removal, with cavities grout-filled. While partially effective, this method has critical flaws:
Non-uniform cooling distribution
Oversized refrigeration requirements
: Limited coil-concrete contact area necessitates excessive installations with diminishing returns.Core issue
High complexity/cost
Flake Ice: The Advanced Solution
to overcome traditional drawbacks, offering:flake ice mixingMajor projects (hydropower dams, HSR bridges, nuclear foundations) now use
10kg ice ≈ 1.2°C–1.4°C drop per m³: Highest efficiency
: Direct particle-aggregate contactOptimal heat transfer
: 40%+ lower vs. embedded systemsCost reduction
Precision Implementation: Integrated during mixingImmediate cooling
:Ice dosage requires strict calculation
❌ Under-dosing: Incomplete cooling → thermal cracks
counters:60kg/m³: Standard dosage
❌ Over-dosing: Voids → structural weakness
Solar heat in aggregates
Hydration heat
Mixing friction heat
Delivery Systems
Containerized UnitsSICECOLD ✅
All-in-one: Ice production/storage/raking
Advantages: Plug-and-play, mobility, centralized control
Ideal for mega-projects
Ice Maker + Slurry System✅
Pumpable slurryIce → Water tank →
Direct injection into mixer
Advantages: Instant activation, simplified piping
:Supplementary systems
Aggregate spray cooling
Chilled-air precooling tunnels
Application of Flake Ice in Concrete Mixing Temperature Control
Application of Flake Ice in Concrete Mixing Temperature Control