Effects of the initial granular structure of clay sealing materials on their swelling properties: experiments and DEM simulationsBenjamin Darde, Anh Minh Tang, Jean-Noël Roux, Patrick Dangla, Jean-Michel Pereira, Jean Talandier and Minh Ngoc VuEPJ Nuclear Sci. Technol., 6 (2020) 1DOI: https://doi.org/10.1051/epjn/2019059