Author(s): Y. Taguchi; T. Kawasaki; S. . Tozawa
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Keywords: No Keywords
Abstract: Confined compressive tests were performed using urea-doped ice which was structurally columnar. In these tests, the ice was loaded in one direction while it was confined in a second direction. For horizontal loading, confining plates were set parallel to the crystal growth direction (Type A), and confining plates were set orthogonal to the crystal growth direction (Type B). Both the applied load and side-confining load were measured. The strength of ice with Type A confinement was 1.5 - 2.0 times higher than the uni-axial compressive strength measured under the same condition. Moreover, in case that the initial confining load acted the strength of ice was further higher. For Type B confinement the effects of confinement or the initial confining loading did not appear remarkably. The results of these tests were plotted as yield points in a two-dimensional plane and compared with the failure envelope of sea ice and model ice reported by Timco and Frederking.
Year: 1988