Heat of Hydration Test

During hydration of cement, heat is produced due to chemical reactions. In a large-scale construction this heat may raise the temperature of concrete to a high degree to as high as 50°C. In such cases low-heat cement has to be used or cooling methods must be employed.

The test is conducted using a calorimeter adopting the principle of determining heat gain. Low-heat cement should not generate 65 calories per gram of cement in 7 days and 75 calories per gram of cement in 28 days.