Heat development during portland cement hydration is affected by the type of cement used, the presence of additions and admixtures, "water / binder material" ratio, the calcium sulfate state, temperature, and others.Hydration process can be monitored by calorimetric techniques which permits to evaluate from the time that cement comes into contact with water, the paste behavior through the release rate of heat produced by the interpretation of acceleration or delay of hydration reactions as well as the intensity of the heat release occurring.Fresh concrete temperature plays an essential role in transportation, placing and curing, accelerating or delaying the onset of reactions and/or modifying the speed of them.