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  1. 紀要論文
  2. 琉球大学工学部紀要
  3. 24号
  1. 部局別インデックス
  2. 工学部

コンクリート中の鉄筋の腐食による付着性状の変化 (1)

http://hdl.handle.net/20.500.12000/17672
http://hdl.handle.net/20.500.12000/17672
318afdea-522a-476f-a33c-c1f8373d8e3d
名前 / ファイル ライセンス アクション
No24p047.pdf No24p047.pdf
Item type デフォルトアイテムタイプ(フル)(1)
公開日 2010-08-03
タイトル
タイトル コンクリート中の鉄筋の腐食による付着性状の変化 (1)
言語 ja
作成者 和仁屋, 晴讙

× 和仁屋, 晴讙

ja 和仁屋, 晴讙

具志, 幸昌

× 具志, 幸昌

ja 具志, 幸昌

伊良波, 繁雄

× 伊良波, 繁雄

ja 伊良波, 繁雄

Waniya, Haruyoshi

× Waniya, Haruyoshi

en Waniya, Haruyoshi

Gushi, Yukimasa

× Gushi, Yukimasa

en Gushi, Yukimasa

Iraha, Shigeo

× Iraha, Shigeo

en Iraha, Shigeo

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
主題
言語 en
主題Scheme Other
主題 Bond
言語 en
主題Scheme Other
主題 Cracks
言語 en
主題Scheme Other
主題 Crack width
言語 en
主題Scheme Other
主題 Deformed reinforcing bars
言語 en
主題Scheme Other
主題 Electrolysis
言語 en
主題Scheme Other
主題 Cumulative amount of current
言語 en
主題Scheme Other
主題 Corrosion
内容記述
内容記述タイプ Other
内容記述 This paper presents the effects of corrosion on bond behavior of reinforcing bars. Pull-out and push-out tests were performed for specimens of 15cm cube with a deformed bar D19 at the center where the bar was electrolytically corroded before the tests. The bond characteristics of specimens with corroded and non-corroded bars are investigated from the test results. The following results are obtained from the test. 1. Initial surface cracks started when the cumulative current of 5 to 8 amp. hrs. was observed and the width ranged from 0 to 0.20mm. 2. Failure pattern of all specimens was splitting failure. 3. Total slip up to failure at free end with an electrolytically corroded bar was 1/5 to 1/10 times the one with a non-corroded bars. Existence of surface cracks due to corrosion of the bar has no effect on the slip. 4. As for the specimens with cumulative current of less than 5 amp. hrs. when no cracks was observed, the bond strength of electrolytically corroded bars (σ_<bk>) was equal to or grater than one of non-corroded (σ_<ba>). 5. The value of σ_<bk> / σ_<bo> dropped to 0.50 for the specimens with relatively small cracks showing cumulative current less than 8 amp. hrs. and scattered in the range of 0.25 to 0.50 for the ones having maximum crack width of 0.20 to 0.60mm where cumulative current of 9 to 17 amp. hrs. was observed. It seems that the variance of these values was caused by the existence of defferent internal cracks. 6. For the specimens reinforced with a spiral bar around the center main bar where cracks obsereved, there was no reduction in bond strength and ductile capacity in bond. It is concluded that the reinforcement with a spiral bar around the center contributed beneficially on splitting bond failure.
内容記述タイプ Other
内容記述 紀要論文
出版者
言語 ja
出版者 琉球大学工学部
言語
言語 jpn
資源タイプ
資源タイプ departmental bulletin paper
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
識別子
識別子 http://hdl.handle.net/20.500.12000/17672
識別子タイプ HDL
収録物識別子
収録物識別子タイプ ISSN
収録物識別子 0389-102X
収録物識別子タイプ NCID
収録物識別子 AN0025048X
収録物名
言語 ja
収録物名 琉球大学工学部紀要
書誌情報
号 24, p. 47-57
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