Water Movement Within Mortar Due to Drying and Wetting

Study on Chloride Ion Penetration Model Considering Water Absorption in Concrete

“…It was assumed that water movement was inhibited due to pore-air pressure caused by trapped air in the specimens. In addition, from previous study [Akita et al 1990], it was suggested that characteristic of water movement were rectilinear capillary water movement at highly water content region, and water vapor diffusion from end point of capillary water at middle and lower water content region. And so, saturation ratio profile of Figure 5 was evaluated according to the following assumption; linear section is capillary water movement, diffusely profile is water vapor diffusion.…”

Analysis of the drying shrinkage behaviour of concrete using a micromechanical model based on the micropore structure of concrete

“…It is reported that the resistance to mass transportation is closely related to the number of pores whose sizes are greater than 10-7 m. 16 This may be because of blockage of fine pores and water retention in pore walls. However, the total mass flux of liquid water computed from equation (9) is not altered significantly even if pores smaller than 10-7 m are included in the integral range because the effect of pore size on the velocity of liquid water is considered in equation (8). Hence, in this study, all pores filled with liquid water are assumed to be effective for the movement of liquid water as assumed in equation (9).…”