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  1. 学術雑誌論文
  2. 洋雑誌

Effect of Wollastonite Microfiber on Ultra-High-Performance Fiber-Reinforced Cement-Based Composites Based on Application of Multi-Scale Fiber-Reinforcement System

https://kitami-it.repo.nii.ac.jp/records/7957
https://kitami-it.repo.nii.ac.jp/records/7957
30809036-87a0-4898-beeb-0a12603df9d0
名前 / ファイル ライセンス アクション
2015_Effect 2015_Effect of wollastonite microfiber on ultra-high-performance fiber-reinforced cement-based composites based on application of multi-scale fiber-reinforcement system.pdf (3.2 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2015-09-07
タイトル
タイトル Effect of Wollastonite Microfiber on Ultra-High-Performance Fiber-Reinforced Cement-Based Composites Based on Application of Multi-Scale Fiber-Reinforcement System
言語 en
言語
言語 eng
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ journal article
アクセス権
アクセス権URI open access
著者 Kwon, Sukmin

× Kwon, Sukmin

en Kwon, Sukmin

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Nishiwaki, Tomoya

× Nishiwaki, Tomoya

en Nishiwaki, Tomoya

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Choi, Heesup

× Choi, Heesup

en Choi, Heesup

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Mihashi, Hirozo

× Mihashi, Hirozo

en Mihashi, Hirozo

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著者別名
識別子Scheme WEKO
識別子 41197
姓名 崔, 希燮
言語 ja
抄録
内容記述タイプ Abstract
内容記述 The development of ultra-high-performance fiber-reinforced cement-based composites (UHP-FRCCs) was motivated by the need for a new and versatile material with high energy absorption capacity. With its excellent cracking resistance and consequent long life, UHP-FRCC is suitable for use in seismic design applications. The present study proposes a material design concept based on a multi-scale fiber-reinforcement system. In this approach, long, thick macrofibers are blended with short, thin mesofibers and microfibers. Such a combination of macrofibers, mesofibers, and microfibers is expected to enhance the mechanical properties of the composite under tension. However, the ductility of cement-based composites reinforced solely by microfibers is largely unknown. Therefore, in this study, the authors assessed whether microfiber improves the ductility of UHP-FRCC in two series of experiments. Wollastonite, which is a needle-shape mineral, is employed as a microfiber, and two different types of steel fibers are used as meso- and macrofibers. First, the enhanced toughness was evaluated in three-point bending tests on notched mortar beams. Second, the influence of wollastonite microfiber on the mechanical properties of the blended multi-scale fiber-reinforcement system was evaluated in uniaxial tension tests. Blends of macrofibers, mesofibers, and wollastonite microfibers exhibited strong reinforcement characteristics. The results indicate that the ductility of composites reinforced with wollastonite microfibers is highly dependent on the microfiber contents and type of fiber used and that blending of micro-, meso-, and macrofibers produces a highly ductile UHP-FRCC. Thus the material design concept based on the multi-scale fiber-reinforcement system proposed in this paper was shown to be effective in increasing the ductility of UHP-FRCC, even under uniaxial tension.
書誌情報 Journal of Advanced Concrete Technology

巻 13, 号 7, p. 332-344, 発行日 2015
DOI
識別子タイプ DOI
関連識別子 http://doi.org/10.3151/jact.13.332
権利
権利情報 c 2015 by Japan Concrete Institute
出版者
出版者 Japan Concrete Institute(公益社団法人日本コンクリート工学会)
言語 en
関連サイト
URL https://www.jstage.jst.go.jp/article/jact/13/7/13_332/_article
著者版フラグ
言語 en
値 publisher
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
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