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Concrete cures via hydration, where the cement in the mix reacts with water to form a strong bond. Heat is a by-product of the hydration reaction, and temperatures often reach 200°F (93°C).
High curing temperatures can have a detrimental effect on the strength of concrete; the greater the temperature, the greater the expansion of concrete during the curing process. This is a particularly prevalent problem on large pour projects, where the inside portion of the pour can be 10-20°F (5–10°C) warmer than the exterior, lowering its tensile strength or even causing cracking.
For this reason, concrete is typically cooled prior to pouring large projects (e.g., underwater bridge seals or power plant projects) or massive amounts of concrete. Linde supports several gas applications for the construction industy and can solve your concrete cooling needs in three different ways:
Cooling the mixture in the agitator truck
Cooling the water before mixing
Cooling the aggregates
Small to mid-size pours can be cooled in the agitator truck using hand-held lances. Larger pours can be cooled using hydraulic lances or by cooling the aggregates at the plant.
Concrete Cooling with Liquid Nitrogen (LIN): Customer Benefits
Concrete cooling with LIN offers technical and financial advantages:
short setup and delivery time
low investment cost
fast availability of cooling power
low space requirements
fully automated process possible
easy way to expand the cooling power
peak shaving for mechanical cooling systems
Contacr us to learn how we can enhance your concrete-cooling methods while ensuring the quality (and safety) of your pour.