Chemical Evolution of Pore Solution in Metakaolin Concrete During Water Evaporation

Metakaolin concrete is a kind of porous material, which contains variety chemical ions in the pores. Solutions these pores are exposed to atmosphere and exist evaporation condensation processes, therefore, pore solution volume changes all time. When ion concentration changes, it has an important impact on strength development durability concrete. However, real-time monitoring was difficult. To study evolution concrete, variation saturated vapor pressure surface metakaolin studied based Cisternas-Lam rule. The rate solvent under corresponding this paper by Stefan diffusion method. dynamic equilibrium process equation then established thermodynamic equation. Based above model, change studied, verified results literature.