Abstract
Vapor diffusion tests were carried out using concrete, mortar and cement paste test pieces to obtain water vapor flux associated with internal evaporation took place at wetting front of liquid water infiltrated across the bottom of the test pieces.
A two-layer model, composed of dry and saturated region, was proposed to calculate a temperature profile over these two regions and then a relationship between hydraulic conductivity and vapor diffusivity of concrete can be evaluated. The water vapor flux for concrete piece could be estimated based on the water vapor flux for cement paste and volumetric cement content.
