Shear thickening of dredged soil by using gypsum-derived hemihydrate plaster and decarburization slag
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概要
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Waste gypsum-derived hemihydrate plaster (HP) was tested as a water absorber for shear thickening of dredged soil (DS) using decarburization slag (DCSL). HP was capable of adjusting apparent water content of DS, and the use of HP resulted in 60% reduction in the amount of DCSL required to meet the target Vane shear stress (0.5 kN/m2). As the total dose of thickening agents, the combinational use of HP and DCSL achieved 40% less as compared to the case of DCSL sole use. After immersing the treated DS into the artificial sea water, Vane shear stress increased during 30 days. The shear thickening effect of DCSL particles was dependent on grain size, and the fractions less than 2 mm-diameters played a prominent role. Finally, a simple additive model was proposed to expect the shear thickening effect of DCSL on DS.
- Japan Society of Civil Engineersの論文
Japan Society of Civil Engineers | 論文
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