| 类石材料--灰泥的冻融过程 |
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| 作者姓名： | Takashi Ono |
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| 作者单位： | Hokkai-Gakuen University, Sapporo, Japan,Graduate school of Hokkai-Gakuen University, Sapporo, Japan |
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| 摘 要： | Serious failure on the slope of rock ground can be caused by a cyclic action of freezing and thawing in the cold regions. The frost susceptibility and the effect of freezing and thawing onthe rock material, however, have not been well investigated. In order to find out the freezing effect on the rock materials, mortar specimens are frozen as a pseudo-rock material under the constant rate of freezing by means of controlling the temperature of both ends of specimen. The freezing process is given one-dimensionally to the cylindrical samples in the laboratory to simulate the in-situ freezing phenomena in the natural ground. Formation of ice lens, frost heave and water intake during freezing process are observed on the mortar specimen under constant freezing rate, which probably causes cracks or large deformation in the real rock ground. The values of the velocity of elastic wave propagation are compared before and after freezing process to estimate the degree of weathering due to freezing and thawing.
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| 关 键 词： | mortar cyclic action of freezing and thawing experiment weathering heave 石材料 冻融过程 Material Mortar Thawing values velocity elastic wave propagation estimate degree weathering causes cracks large deformation real heave water intake during constant |
Freezing and Thawing of Mortar as a Pseudo-Rock Material |
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| Takashi Ono.Freezing and Thawing of Mortar as a Pseudo-Rock Material[J].Journal of Glaciology and Geocryology,2004,26(Z1):64-69. |
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| Authors: | Takashi Ono Yusuke Abe |
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| Abstract: | Serious failure on the slope of rock ground can be caused by a cyclic action of freezing and thawing in the cold regions. The frost susceptibility and the effect of freezing and thawing onthe rock material, however, have not been well investigated. In order to find out the freezing effect on the rock materials, mortar specimens are frozen as a pseudo-rock material under the constant rate of freezing by means of controlling the temperature of both ends of specimen. The freezing process is given one-dimensionally to the cylindrical samples in the laboratory to simulate the in-situ freezing phenomena in the natural ground. Formation of ice lens, frost heave and water intake during freezing process are observed on the mortar specimen under constant freezing rate, which probably causes cracks or large deformation in the real rock ground. The values of the velocity of elastic wave propagation are compared before and after freezing process to estimate the degree of weathering due to freezing and thawing. |
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| Keywords: | mortar cyclic action of freezing and thawing experiment weathering heave |
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