Abstract
The moisture transfer within concrete due to drying was analyzed by non-linear diffusion equation. The complete procedure of the analysis was established by the comparison of the numerical results with experimental ones concerning wide range of mix proportions of concrete. The variation of the coefficients needed to the analysis were also presented related to wide range of water cement ratios and some characteristics of the coefficients are discussed based on the numerical results. In addition, the effect of evaporation heat loss on water transfer was considered by the analysis of a simultaneous heat and moisture transfer. As a result, it is shown that the effect is negligibly small as for the drying in room temperature and humidity.
