Abstract
It is important to predict the strength of concrete cured under high-temperature conditions at an early age, such as mass concrete and precast concrete. Using the maturity method, the strength of concrete cured under high-temperature conditions at an early age was predicted. It became obvious that the previous maturity method was not sufficient to predict the strength of concrete cured under these conditions. Therefore, a new factor was introduced to make the previous maturity method applicable to the strength of concrete cured under high-temperature conditions at an early age. As a new factor, the integrated value of curing temperature during the period having a significant effect on the strength development was adopted. It was found that the prediction accuracy at later ages was improved by introducing the new factor.
