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Residual soils show a specific mechanical behaviour classified as non-conventional when compared with sedimentary transported soils, since the presence of a cemented matrix plays an important role on their strength and stiffness. Moreover, suction is frequent in natural profiles, which in residual soils creates several problems on the interpretation of ...

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Cone penetration in mixed or intermediate soils (soils containing mixtures of sand, silt and clay) is neither fully drained nor fully undrained at the standard cone penetration rate of 20 mm/s. Considerable research, mainly relying on centrifuge tests, has been undertaken to quantify the effects of penetration rate (and thus partial drainage) on cone re...

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This paper presents results of the instrumentation of 373 blows from two SPT deployments performed in the Sarapuí­ II Test Site, located in Duque de Caxias, Rio de Janeiro. In these blows the hammer drop height, its velocity at impact, the rate of blows and also the energy transferred to the rod stem have been measured. It is therefor...

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Large-scale mining operations generate vast quantities of tailings that are deposited in hydraulic-fill tailing dams in the form of slurries. Stability of these impoundments require investigation of water table configuration, aquifer boundaries, site characterization and determination of short and long term properties of tailings. These aspects are eval...

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