| Item type |
学術雑誌論文 / Journal Article.(1) |
| 公開日 |
2017-12-26 |
| 書誌情報 |
en : Applied Sciences
巻 7,
号 6,
p. 546,
発行日 2017-05-25
|
| タイトル |
|
|
タイトル |
Control of the Polymorphism of Calcium Carbonate Produced by Self-Healing in the Cracked Part of Cementitious Materials |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
crack |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Ca2+ ion |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
CO32− ion |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
CO2 nanobubble |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
self-healing |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
CaCO3 |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
vaterite |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 著者 |
崔, 希燮
崔, 亨吉
井上, 真澄
SENGOKU, Risa
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| 室蘭工業大学研究者データベースへのリンク |
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|
崔 亨吉（CHOI Hyeonggil） |
|
|
http://rdsoran.muroran-it.ac.jp/html/100000220_ja.html |
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
Cracking is an inherent development in reinforced concrete structures and can lead to serious damages during their service period. The repeated occurrence of such damages can enlarge the cracks, thereby allowing other deteriorating elements such as CO2 and Cl− to further infiltrate the concrete, which can seriously compromise the concrete structure. This study focuses on the type of calcium carbonate (CaCO3) crystals generated by the self-healing phenomenon. Owing to polymorphism, CaCO3 has three types of crystal forms—calcite, vaterite, and aragonite—whose formation can be controlled by the temperature and pH. Vaterite has the highest density among these crystals, and it is expected to be capable of self-healing. Therefore, experiments were conducted to establish the conditions required to promote the generation of vaterite. A saturated Ca(OH)2 solution with CO2 nanobubbles (CN) was employed for effective self-healing. The temperature was controlled at 20, 40, and 60 °C, and the pH was controlled at 9.0, 10.5, and 12.0. The results showed that the self-healing of cracks occurred both on the surface and internally, and the main product of the self-healing phenomenon was vaterite in CaCO3 crystals at a pH of 9.0 and a temperature of 40 °C. Furthermore, the addition of a saturated Ca(OH)2 solution with CO2 nanobubbles (CN) resulted in the most effective self-healing of the surface and internal cracks. |
|
言語 |
en |
| 出版者 |
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|
出版者 |
MDPI |
|
言語 |
en |
| 出版者版へのリンク |
|
|
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10.3390/app7060546 |
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|
https://doi.org/10.3390/app7060546 |
| DOI |
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|
関連タイプ |
isIdenticalTo |
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|
識別子タイプ |
DOI |
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関連識別子 |
10.3390/app7060546 |
| 日本十進分類法 |
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主題Scheme |
NDC |
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主題 |
511 |
| ISSN |
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収録物識別子タイプ |
PISSN |
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収録物識別子 |
2076-3417 |
| 権利 |
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|
言語 |
en |
|
権利情報 |
© 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( http://creativecommons.org/licenses/by/4.0/). |
| 著者版フラグ |
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出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| フォーマット |
|
|
内容記述タイプ |
Other |
|
内容記述 |
application/pdf |
applsci_07_546 (5.5 MB)
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