Strength recovery of concrete exposed to freezing-thawing by self-healing of cementitious materials using synthetic fiber

doi:info:doi/10.5185/amlett.2017.1635

Strength recovery of concrete exposed to freezing-thawing by self-healing of cementitious materials using synthetic fiber 利用統計を見る

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アイテムタイプ	学術雑誌論文 / Journal Article.
言語	英語
キーワード	Freeze-thaw, micro-crack, PVA fiber, CO2 micro-bubble, self-healing, water tightness, strength recovery
著者	CHOI Heesup INOUE Masumi SENGOKU Risa CHANG Young-Cheol ( 研究者リゾルバーID: 1000030422025 )
著者（別表記）	CHOI Heesup INOUE Masumi SENGOKU Risa 張傛喆
室蘭工業大学研究者データベースへのリンク	張傛喆（CHANG Young-Cheol）
抄録	In this study, it is possible to disperse effectively cracked using synthetic fiber, an examination of the most suitable self-healing conditions was performed on the above crack width 0.1mm. As a result, effective crack dispersion using polyvinyl alcohol(PVA) fibers with polar OH-groups, as well as improved self-healing for cracks that are larger than 0.1 mm in width, posing concerns of CO2 gas and Cl -penetration, were observed. Also, CO3 2-reacts with Ca2+ in the concrete crack, resulting in the precipitation of a carbonate compound, CaCO3. Based on this, it is deemed possible for the recovery of effective water tightness and strength recovery through effective freezing-thawing resistance to be made from cracks that are larger than 0.1mm in width. In addition, it was determined that, as for the most suitable self-healing conditions in the inside and surface of the cracks, calcium hydroxide (Ca(OH)2) solution with CO2 micro-bubble was more effective in promoting the self-healing capability than water with CO2 micro-bubble. Copyright © 2017 VBRI Press.
雑誌名	Advanced Materials Letters
巻	8
号	10
ページ	993 - 998
発行年	2017-10
出版者	VBRI Press
出版者版へのリンク	10.5185/amlett.2017.1635
DOI	info:doi/10.5185/amlett.2017.1635
日本十進分類法	570
ISSN	0976-3961 0976-397x
権利	Copyright©2017 VBRI Press.
著者版フラグ	publisher
フォーマット	application/PDF

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Strength recovery of concrete exposed to freezing-thawing by self-healing of cementitious materials using synthetic fiber 利用統計を見る

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