Impact of Salinity on the Erosion Threshold, Yield Stress, and Gelatinous State of a Cohesive Clay
Jorge E. San Juan,
William G. Wei,
Judy Q. Yang
Abstract:Clay is the main component that contributes to sediment cohesiveness. Salinity impacts its transport, which controls the electrochemical force among the sediment grains. Here, we quantify the impacts of salinity on the erosion threshold, yield stress, and the microstructures of a fluorescently labeled smectite clay, laponite, by combining flume experiments, rheometer measurements, and macro‐ and microscopic imaging. We show that the critical shear stress for clay erosion, τb,crit, increases by one order of mag… Show more
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