摘要(英) |
Granite is one of the best materials for nuclear waste disposal host rock. When the heat decayed by nuclear waste has chance to contact with the groundwater in host rock and heating it. It will change the physical property and mineral phase of host rock, and make great effect on host rock. The sample of experiment is drilling from a place named Tianpu, which is locate at the east of Kinmen. Samples were soaked in different solutions separately under two temperatures of 60 ℃and 90℃. For practical purposes, the solution with pH value of 3, 5, 9 were used in the
experiments. Additionally, the sea water and the RO water were also used.In order to observed the change of granite which is immersion in hot
water during long time, The permeability and porosity measurement machine in Taiwan set by professor Toshihiro shimamoto is be used for
analysis the specimens which were taken form the hot water bath each time after 15, 35, 70, 120 days of immersion.
The experimental result shows that granite immersion in acid and neutral hot water environment, the tendency of permeability and porosity, and the development of crack is increasing stably, just like generally expect. The granite immersion in basic hot water shows different tendency of permeability and porosity. The porosity tendency is decreasing of the granite immersion in sea water. |
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