Impact of sand on the water retention properties of a bentonite/sand mixture by NMR characterization oleh Eizaguirre Pablo, Tang Anh Minh, Maillet Benjamin, Sidi-Boulenouar Rahima, Chabot Baptiste, Bornert Michel, Pereira Jean-Michel, Dangla Patrick, Aimedieu Patrick, Talandier Jean, Vu Minh Ngoc