Condensation in porous media is critical for a variety of open challenges, from energy storage to carbon capture, and moisture transport in civil structures, yet remains poorly understood. To investigate this, neutron imaging at ILL was used to track water condensation and migration in fractured porous materials, while X-ray imaging at ESRF provided complementary insights into fracture morphology and solid structure. The results reveal that fractures act as primary vapor pathways, while condensed water accumulates in smaller pores due to capillary forces. This study emphasises the impact of fracture morphology and microstructure on condensation dynamics, offering new insights into phase change processes in porous media.
