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http://dx.doi.org/10.9720/kseg.2016.3.315

Slaking Characteristics of shale in the Gyoungsang Super-group, Korea  

Park, Sung-Sik (Department of Civil Engineering, Kyungpook National University)
Ye, Sung-Ryol (Department of Civil Engineering, Kyungpook National University)
Kim, Gyo-Won (Department of Geology, Kyungpook National University)
Publication Information
The Journal of Engineering Geology / v.26, no.3, 2016 , pp. 315-324 More about this Journal
Abstract
Because of a fissility characteristics of shale in the Gyoungsang super-group, it breaks down to debris when daylighted by construction work and causes a slope unstability. To assess the durability property of shale, a series of slake durability tests was conducted by controlling test conditions such as shape of specimen, number of specimen, revolution speed, revolution number, drying temperature and pH of submerging liquid. For the specimen shape, cube one showed relatively lower durability index than cuboid and/or fan shape one. The test with the more number of specimens showed the less durability index because of a higher friction among specimens in the drum. The durability index is linearly decreased by increasing the total number of revolution, while the revolution velocity could not affect the index. And the durability index is also decreased by increasing the drying temperature of specimen and by decreasing the pH of submerging liquid. Because the durability index of shale is almost similar to that of crystalline rocks, the disintegration characteristics of shale could not be assessed by the slake durability test recommended by ISRM, and thus a new test method by changing the total revolution number may be required for the shale having fissility characteristics.
Keywords
Gyeongsang Super-group; Shale; Fissility; Slake durability index;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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