Abstract
The moisture transport performance of concrete is a vital factor that affects its durability, and this performance is closely related to the pore structures of the porous materials. In this study, water content profiles of capillary absorption were obtained using X-ray computed tomography technology. Based on the Lucas–Washburn equation, an inverse model was established to deduce the pore size distribution from the water content profiles. The feasibility of the proposed method was demonstrated using a size distribution model of the cement samples with different water-to-cement ratios. The obtained results were compared with the cumulative pore size distribution measured by mercury intrusion porosimetry, which indicated that the two methods exhibited satisfactory consistency.
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