Assessing the humidification process of lightweight concrete specimens through infrared thermography

The results pointed that assessing the humidification phenomena using IRT is possible under stable conditions. The boundary conditions for the humidification process affected the results interpretation as it was easier to detect moisture when the surface under study was in direct contact with liquid water (partial humidification by the specimens' bottom surface). In this case clearer surface temperature differences could be found between the moist and the dry areas, which appear sooner in time. The surface temperature decrease was marked near the bottom during humidification by the bottom and near the top during humidification by the top, highlighting the effect of evaporation at the surface.