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- UEHARA Motoki
- Railway Technical Research Institute
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- SATO Takatsune
- Railway Technical Research Institute
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- OUCHI Yuto
- School of Creative Science and Engineering, Faculty of Science and Engineering, Waseda University
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- YAMAZAKI Atsushi
- School of Creative Science and Engineering, Faculty of Science and Engineering, Waseda University
Bibliographic Information
- Other Title
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- フライアッシュを原料としたH^+型ジオポリマーの作製とイオン交換特性
- フライアッシュ オ ゲンリョウ ト シタ H ⁺ カタ ジオポリマー ノ サクセイ ト イオン コウカン トクセイ
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Abstract
H^+-form geopolymer powder was prepared by grinding a Na^+-form geopolymer hardened paste and processing it with sulfuric acid. At pH 7, the extent of cation exchange with Na^+ and K^+ ions of the H^+-form geopolymer powder was one-fourth of that of the original Na^+-form geopolymer at the same pH. The ion-exchange capacity of the H^+-form geopolymer powder showed pH dependence, that is, a tendency to increase with increasing pH. Additionally, we observed that the H^+-form geopolymer powder adsorbed Na^+ ions from and lowered the pH of the hardened cement paste. However, in solution at pH 12.5, a part of the Si component of the H^+-form geopolymer powder was leached out. It was thus confirmed that other alkaline-adsorption mechanisms, by which the leached Si-component reacts with the alkaline component of the cement paste, are at work, and therefore, they need to be considered in addition to the cation-exchange reaction in order to understand completely the behavior of the H^+-form geopolymer in cement paste.
Journal
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- Journal of the Clay Science Society of Japan (in Japanese)
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Journal of the Clay Science Society of Japan (in Japanese) 53 (1), 8-15, 2014
The Clay Science Society of Japan
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Details 詳細情報について
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- CRID
- 1390282679088683264
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- NII Article ID
- 110009844815
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- NII Book ID
- AN00199972
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- ISSN
- 21863563
- 04706455
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- NDL BIB ID
- 025810738
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed