Enhancement of Crack Distribution of UHP-SHCC under Axial Tension Using Steel Reinforcement
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- Kunieda Minoru
- Department of Civil Engineering, Nagoya University, Japan.
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- Hussein Mohamed
- Department of Civil Engineering, Nagoya University, Japan. Department of Structural Engineering, Tanta University, Egypt.
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- Ueda Naoshi
- Department of Civil Engineering, Nagoya University, Japan.
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- Nakamura Hikaru
- Department of Civil Engineering, Nagoya University, Japan.
抄録
Ultra High Performance-Strain Hardening Cementitious Composites (UHP-SHCC) are a composite material comprising a cement-based matrix and short fibers with outstanding mechanical and protective performance. Surface protection repair using a thin layer of UHP-SHCC to extend the service life of concrete structures has been proposed, and surface protec-tion performance associated with both a durable matrix and multiple fine cracks is required. This paper presents an ex-ample of decreased cracking ability and decreased strain capacity in UHP-SHCC specimens of a practical size. Note that, the small size dumbbell-shaped UHP-SHCC specimen can exhibit a large number of cracks and higher strain capacity. Also, this paper assesses the usage of a small amount of steel reinforcement in order to enhance the crack distribution and strain capacity of practical size UHP-SHCC specimens in tension. Practical-size specimen dimensions (cross sectional size: 200 x 50mm), which are similar to the typical size used for surface protection repair applications (depth of 30 to 70 mm), were selected in this study. Different reinforcement ratios ranging from 0.3% to 1.2% were used to evaluate the effect of the reinforcement ratio on the specimens' strain capacity and crack distribution.
収録刊行物
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- Journal of Advanced Concrete Technology
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Journal of Advanced Concrete Technology 8 (1), 49-57, 2010-02-26
公益社団法人 日本コンクリート工学会
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詳細情報 詳細情報について
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- CRID
- 1390001205219820416
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- NII論文ID
- 130000248940
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- ISSN
- 13473913
- 13468014
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可