1987 Fiscal Year Final Research Report Summary
Behaviour of water on heating clay minerals
| Project/Area Number |
61420016
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| Research Category |
Grant-in-Aid for General Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
鉱物学(含岩石・鉱床学)
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| Research Institution | Shizuoka University |
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Principal Investigator |
NAGASAWA Keinosuke Faculty of Science, Shizuoka Univeristy, 理学部, 教授 (20022519)
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| Co-Investigator(Kenkyū-buntansha) |
WADA Hideki Faculty of Science, Shizuoka University, 理学部, 助手 (20126791)
FUJIYOSHI Akira Faculty of Education, Shizuoka University, 教育学部, 助教授 (00022202)
KURODA Naoshi Faculty of Science, Shizuoka University, 理学部, 助教授 (60021903)
SAMEJIMA Teruhiko Faculty of Science, Shizuoka University, 理学部, 教授 (70187285)
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| Project Period (FY) |
1986 – 1987
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| Keywords | X-ray diffraction / Basal spacing / Vermiculite / Montmorillonite / Beidellite / Dehydration / 復水 |
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| Research Abstract |
Three montmorillonites from Tsukinumo, Shirosaki and Kawasaki, one beidellite from Coalgate, and one vermiculite from Odaka were examined by X-ray diffraction, chemical analysis and thermal analysis.
These 5 samples were saturated with Li, Na, K, Ca, and Mg, and the measurement of basal spacing was made for these homoionic samples at room temperature, on heating at 300゜C, 500゜C, and 700゜C and after cooling and then keeping at 100% R.H. for 10 days and 30 days.
Li-saturated montmorillonites do not rehydrate after at 300゜c, 500゜c, or 700゜c, a result in accord with Greene-Kelly. Montmorillonites of the other forms and beidellite rehydrate after heated at 300゜c or 500゜c. After heated at 700゜c,smectites do not rehydrate, or slightly rehydrate if any, whereas vermiculite other than K-form largely rehydrates; this result is consistent with the DTA curves.
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