The internal temperature of concrete will rise faster in the process of coagulation and hardening since this process will generate much hydration heat. However, the concrete is of low thermal conductivity and fast surface heat dissipation, which makes a large temperature difference between the inside and outside of the concrete and cause a tensile stress on the surface of concrete. When the tensile stress exceeds a certain limit, the concrete surface will crack.
It is true that artificial cooling is one of the most popular ways to prevent concrete from cracking, however, it is vital to know that pre-cooling of aggregate and mixing the cold water and ice with concrete can significantly reduce the temperature of outlet concrete to control the concreting temperature.
In addition, as for the pouring of mass concrete, we also recommend you embed pipes in the concrete for flowing cooling water to reduce the temperature inside.
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AN OVERVIEW OF A CONCRETE COOLING SYSTEM