Concrete Cooling .

Large-Pour Cement Projects Result in Very High Temperatures

The process of mixing cement aggregates with water results in the formation of the strong, highly useful material known as concrete. However, the chemical reactions that occur during the hydration process are largely exothermic, meaning that they release heat. Thus large-pour projects result in rapidly rising temperatures that can easily exceed 200°F. Which is why finding the best concrete cooling solution is critical.

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Problems Associated with High Temperatures in Concrete Pours

High temperatures can potentially result in numerous problems including reduced tensile strength, non-uniformity, and a greater tendency toward cracking. This is particularly problematic since most large-pour projects have a great need for strength and durability. In industrial and commercial settings poor concrete strength can even compromise safety. Thus successful concrete cooling is imperative.

Options for Effective Cooling

Fortunately there are several effective methods to lower temperatures including:

  • Water Cooling – Involves directly lowering the temperature of the water to be mixed with the cement aggregates to near freezing levels. This is one of the most effective methods of concrete cooling. The temperature of the water used for mixing is the single largest determinant in the mixture’s temperature.
  • Aggregate Cooling – Aggregate cooling involves lowering the temperature of the aggregates that will be used in the cement mix. This method can be performed using either water with the flooded silo technique, or with air cooling.
  • Drum Cooling – involves lowering the temperature of the cement mix while it is in the drum undergoing hydration. This method typically involves the use of ice; it is important to ensure that the ice will thoroughly melt during the process so as to avoid gaps and uneven hydration in the final concrete.
  • Post-Cooling – performed after the concrete has been poured by pumping chilled water through a network of pipes located within the concrete. This method is effective for very large projects such as dam construction.
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Custom Cooling Solutions

SEMCO/SEMCOLD LLC is dedicated to delivering the absolute best concrete system for each of our clients’ needs. That means that the entire system will be custom made and designed to best fit the applications and settings in which it will be used. Our extensive background in commercial and industrial projects means that we are highly tuned in to the needs of our large-pour clients; understanding the need for superior strength, durability, safety, and have the expertise and resources it takes to deliver outstanding concrete systems.

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