An experimental discussion on bond strength reduction of ASR damaged concrete

D. Yamamoto, H. Hamada, Y. Sagawa

研究成果: 書籍/レポート タイプへの寄稿会議への寄与

抄録

It is generally said that bonding strength of concrete and rebar decreases if the concrete expand due to ASR. On the other hand, it still remains unclear as how the increment of internal crack due to ASR expansion affects the decrease of bonding strength. Therefore, to clarify how the expansion due to ASR affects the bonding strength of concrete and rebar, bond strength test of rebar and observation of the internal crack after bond strength test were performed. As results of the experiment, the bond strength of the round steel bar decreased dramatically at 0.05% of ASR expansion. It may be said that most of the chemical bonding, and frictional bonding component were lost. On the other hand, bond strength of deformed rebar did not show significant decrease at 0.05% of ASR expansion. That considered due to mechanical bonding effect. After that as expansion increase, deformed rebar also show continued decreasing of bond strength.

本文言語英語
ホスト出版物のタイトルBridge Maintenance, Safety, Management, Life-Cycle Sustainability and Innovations - Proceedings of the 10th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2020
編集者Hiroshi Yokota, Dan M. Frangopol
出版社CRC Press/Balkema
ページ2644-2650
ページ数7
ISBN(電子版)9780429279119
ISBN(印刷版)9780367232788
DOI
出版ステータス出版済み - 2021
イベント10th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2020 - Sapporo, 日本
継続期間: 4月 11 20214月 15 2021

出版物シリーズ

名前Bridge Maintenance, Safety, Management, Life-Cycle Sustainability and Innovations - Proceedings of the 10th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2020

会議

会議10th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2020
国/地域日本
CitySapporo
Period4/11/214/15/21

!!!All Science Journal Classification (ASJC) codes

  • 土木構造工学
  • 安全性、リスク、信頼性、品質管理

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