Determination of the Environmental Temperature and Hydration Heat during Concrete Pouring

Abstract

In the design process, it is necessary to predict the temperature changes during concrete mixing, transportation and pouring. Prediction of concrete pouring temperature needs to consider the temperature conditions and hydration heat of the concrete in the pouring process. A method for calculating the highest environmental temperature during the paving layer pouring period is proposed, providing a foundation for determining the highest pouring temperature. During concrete pouring, hydration heat affects pouring temperature Considering that concrete hydration heat is significantly affected by the environment, the equivalent age should be calculated. The effect of concrete hydration heat on concrete pouring temperature is investigated. An equation to calculate the effect of hydration heat on the concrete pouring temperature is proposed. With the measures in this paper, the prediction accuracy of pouring temperature of mass concrete can be improved obviously.