Applied Clay Science

Understanding solute transport behaviour in bentonite barriers is critical for evaluating the long-term safety of deep geological repositories. This study investigated the effect of salt (NaCl) concentrations on the diffusive transport of bisulfide (HS − ) and bromide (Br − , a conservative analogue), through MX-80 bentonite at a dry density of 1090 kg m −3 by performing through-diffusion experim…

Halloysite (HAL) is a natural dioctahedral 1:1 clay mineral ubiquitous in soils and weathered rocks, where it occurs in a variety of particle shapes from cylindrical to prismatic nanotubes and occasionally spheroidal particles. Much less attention has been paid to the thermal transformation of halloysite than to its planar polymorph, kaolinite. This study investigates the morphological and struct…

Continuous H 2 /CO 2 separation via permselective membranes is highly sought after as pure H 2 plays a key role in H 2 economy. Aqueous nematic suspensions obtained by 1D dissolution of affordable sodium fluorohectorite allow for simple membrane fabrication by spray coating. The monolayer nanosheets have a uniform thickness of 1 nm and appreciable aspect ratio, thus self-assemble into defect-free…

Gravel wash fines, a by-product of aggregate processing that contains mixed clay mineral phases, have demonstrated potential as an effective supplementary cementitious material upon calcination. Compositional analysis revealed that replacing >40% ordinary Portland cement (OPC) was hindered by a lack of portlandite (calcium hydroxide, CH), either due to cement dilution or being fully consumed by p…