Aggregates cooling by cold air
The cooling of the aggregates by recirculation of cold air allows to obtain concretes with the lowest temperatures and the highest energy efficiency.
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Description
Since the aggregates from 5 mm to 150 mm make up from 40% to 60% of the concrete mass, this allows high production rates and extreme temperature reduction. Therefore, air cooling of aggregates has proven to be very effective in all climates.
Furthermore, when this technology is used, the limitation of adding water to the mixing is not a limiting factor, which allows obtaining very low concrete temperature compared to other techniques.
The final temperature of the aggregate depends on its residence time in the cold air flow and its size. For this reason, the volume of the silo where the cooling process takes place is very important to obtain the best result.
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