One of the characteristics in hydraulic projects is that the concrete structural volume is large, and the key to determine the construction success or failure is to control the rising up of the temperature of concrete and prevent the temperature crack stress. Therefore, concrete used in construction generally required to be: 1) adopting low-hydration hot cement; 2) using less dosage of cement (lean concrete); 3) using high adding quantity of mineral admixture (such as mineral powder, coal ash, etc.).


