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Geotechnical properties of some evaporitic rocks
Abstract The physical properties of four evaporitic rocks, anhydrite, gypsum, potash and rock salt, were investigated. Their respective specific gravities and dry densities show little variation and all four rock types have low porosity values. Anhydrite is by far the strongest material both in unconfined compression and in tension, followed by gypsum, potash and rock salt, in that order. The hardness values of these four rock types follow the same order as the strength values, to which they have a highly significant relationship. All four rock types exhibit some amount of plastic deformation prior to failure, anhydrite the least whilst rock salt shows the most. The value of Young's modulus tends to increase as the value of density, strength and hardness increases. Incremental creep tests indicate that rock salt suffers appreciable creep before failure, as does potash. Gypsum undergoes much more creep before failure than does anhydrite.
Geotechnical properties of some evaporitic rocks
Abstract The physical properties of four evaporitic rocks, anhydrite, gypsum, potash and rock salt, were investigated. Their respective specific gravities and dry densities show little variation and all four rock types have low porosity values. Anhydrite is by far the strongest material both in unconfined compression and in tension, followed by gypsum, potash and rock salt, in that order. The hardness values of these four rock types follow the same order as the strength values, to which they have a highly significant relationship. All four rock types exhibit some amount of plastic deformation prior to failure, anhydrite the least whilst rock salt shows the most. The value of Young's modulus tends to increase as the value of density, strength and hardness increases. Incremental creep tests indicate that rock salt suffers appreciable creep before failure, as does potash. Gypsum undergoes much more creep before failure than does anhydrite.
Geotechnical properties of some evaporitic rocks
Bell, F. G. (author)
1981
Article (Journal)
English
Geotechnical properties of some evaporitic rocks
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