Abstract
In this paper, the interrelationship between hydration and moisture equilibrium was theoretically discussed based on the experimental fact that the hydration process of low W/C concrete differs from that of concrete which has sufficient water for hydration. Free water available for hydration was defined based on the thermodynamics, and was obtained by moisture isotherm/transport and pore-structure development models. By coupling of the hydration heat model with the obtained free water in porous medium. we aimed to predict the hydration process of low W/C concrete. Through several numerical sensitivity analyses and verifications with experimental data. the authors showed that the interaction of hydration with moisture equilibrium in porous medium should be considered in low W/C concrete.
