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  1. 学術雑誌・学外紀要・定期刊行物等掲載論文・記事

Underwater fatigue behavior of cementitious mortar and a countermeasure using a water-dispersible polyurethane ether–Portland cement composite

https://kagawa-u.repo.nii.ac.jp/records/2001114
https://kagawa-u.repo.nii.ac.jp/records/2001114
a54ece06-fb55-4209-b595-99b4c120ed1f
名前 / ファイル ライセンス アクション
CBM428_136296 CBM428_136296
Item type 学術雑誌論文 / Journal Article(1)
公開日 2025-10-07
タイトル
タイトル Underwater fatigue behavior of cementitious mortar and a countermeasure using a water-dispersible polyurethane ether–Portland cement composite
言語 en
言語
言語 eng
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 embargoed access
アクセス権URI http://purl.org/coar/access_right/c_f1cf
公開予定日
日付 2026-04-20
日付タイプ Available
著者 髙橋, 慶介

× 髙橋, 慶介

ja 髙橋, 慶介

ja-Kana タカハシ, ケイスケ

en Takahashi, Keisuke


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Matsuda, Yoshinori

× Matsuda, Yoshinori

en Matsuda, Yoshinori


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Miura, Shuichiro

× Miura, Shuichiro

en Miura, Shuichiro


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Akitou, Tetsu

× Akitou, Tetsu

en Akitou, Tetsu


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Kuraoka, Mareki

× Kuraoka, Mareki

en Kuraoka, Mareki


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Kono, Iku

× Kono, Iku

en Kono, Iku


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抄録
内容記述タイプ Abstract
内容記述 The underwater fatigue behaviors of cementitious mortars are investigated with a focus on the mechanisms contributing to the deterioration of bridge foundations and possible countermeasures. This study analyzes the effects of water penetration during repetitive loading and unloading on the underwater fatigue lives of cementitious materials, highlighting the importance of considering dynamic water motion, in addition to the surface energy mechanism. Water penetration during underwater fatigue occurs even in water-saturated specimens, and water in- and egress within a few millimeters of the specimen surface can significantly reduce the fatigue life. This study proposes a novel approach using a water-dispersible polyurethane ether–Portland cement composite as a countermeasure to improve underwater fatigue resistance. Based on experimental analysis of fatigue in water and microstructural investigations of the composite, the presence of polyurethane compounds within the nano-to-micron-sized microstructures may mitigate water penetration and contribute to a corresponding increase in underwater fatigue life.
言語 en
書誌情報 en : Construction and Building Materials

巻 428, 発行日 2024-05-17
出版者
出版者 Elsevier
言語 en
ISSN
収録物識別子タイプ EISSN
収録物識別子 1879-0526
権利
言語 en
権利情報 © 2024 Elsevier Ltd. All rights reserved.
著者版フラグ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
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