tueda0715/published_papers/42399743 Masayuki TSUKAGOSHI 塚越 雅幸 Yuji YAMADA 山田 悠二 Hirotaka HAZEHARA 櫨原 弘貴 Kazuhide NAKAYAMA 中山 一秀 Takao UEDA 上田 隆雄 STUDY OF A REPAIR EFFECT OF SAP-MIXED PATCH REPAIR MATERIL FOR RC MEMBER DETERIORATED BY CHLORIDE INDUCED CORROSION 塩害劣化したRC部材へのSAPを混和した断面修復材による補修効果の検討 Architectural Institute of Japan Journal of Structural and Construction Engineering (Transactions of AIJ) 1881-8153 87 802 1104 1110 20221201 10.3130/aijs.87.1104 tueda0715/published_papers/39168672 UEDA Takao 上田 隆雄 YAMAGUCHI Keisuke 山口 圭亮 NANASAWA Akira 七澤 章 ASHIDA Masanobu 芦田 公伸 ASR Expansion of Concrete or Mortar Affected by Electric Field(<Special Issue>Aggregates and Admixtures for Concrete) 電場の影響を受けたコンクリートおよびモルタルのASR膨張(<特集>コンクリート用骨材および混和材料) Electrochemical techniques such as desalination and realkalization have been developed as the repair methods for reinforced concrete structures deteriorated by chloride attack or carbonation of concrete. Recently, these tech niques have been applied to many actual structures. On the other hand, it has been suggested that there is some risk to accelerate the ASR expansion of concrete if the applying structures contain the reactive aggregate. In this study, the degree of ASR expansion accelerated by applying electrochemical repair method was investigated experimentally and at the same time, the suppression effect of ASR expansion due to the electrochemical treatment using the electrolyte containing lithium ions was also examined. The result of this study was that remarkable acceleration of ASR expansion due to applying electrochemical treatment was not observed and the ASR expansion of the specimens applied electrochemical treatment using lithium rich electrolyte tended to be smaller than the expansion of non-treated specimens. The Society of Materials Science, Japan 社団法人日本材料学会 Journal of the Society of Materials Science, Japan 材料 0514-5163 53 10 1059 1064 20041015 10.2472/jsms.53.1059 tueda0715/published_papers/26807551 上田 隆雄 小林 孝一 山本 尚 宮川 豊章 発錆した溶接金網用鉄線のコンクリート中での腐食進展と付着挙動(腐食・防食) 本研究では,施工現場において雨水等の影響で発錆した溶接金網をコンクリート中に埋め込んだ場合を想定し,打設後のコンクリート中における鉄線の腐食進行,および,発錆した鉄線とコンクリートとの付着に関して実験的検討を行った．この結果,コンクリートの含有塩分量が土木学会コンクリート標準示方書に示された許容値以下であれば,施工後の鉄線腐食進展は見られず,セメントの水和反応進行に伴って鉄線防食環境が形成された．付着に関しても,本研究で想定した程度の腐食レベルにおいては,鉄線腐食による付着強度の低下や曲げ部材のひび割れ分散性への悪影響は見られなかった． 公益社団法人日本コンクリート工学会 コンクリート工学年次論文集 1347-7560 24 1 753 758 20020600 tueda0715/misc/39148861 Ueda Takao 上田 隆雄 Development of a Rehabilitation Method for Concrete Structures Using the Ductile Fiber Reinforced Cementitious Composite 高じん性セメント複合材料を用いたコンクリート構造物のリハビリテーション手法の開発 Electrochemical corrosion control methods have been applied to concrete structures deterioratedby steel corrosion in concrete. By means of these methods, corrosion control effect can be expected,but the improvement of mechanical performances or prevention of dropping of concrete pieces can'tbe gained. From such background, experimental investigation was carried out in order to clarify thepossibility of a new electrochemical rehabilitation method, in which the ductile fiber reinforcedcementitious composite bonding and covering the anode material on the concrete surface was usedfor improving the mechanical performances of the deteriorated structures. As the results of this study,bending strengthening effect was confirmed by the flexural bending test of reinforced concretespecimens applying the proposed method. The University of Tokushima 徳島大学 Bulletin of Institute of Technology and Science the University of Tokushima 徳島大学大学院ソシオテクノサイエンス研究部研究報告 2185-9094 53 40 45 20080000 tueda0715/misc/23173849 Takao Ueda Masanobu Ashida Toyoaki Miyagawa Corrosion protection behavior of reinforcing steel after desalination on concrete structure デサリネーション適用後の鉄筋防食効果に関する研究 Soc Mater Sci, Japan Zairyo/Journal of the Society of Materials Science, Japan 材料 0514-5163 48 8 907 912 19990000 10.2472/jsms.48.907 2-s2.0-0033353172 tueda0715/misc/23173843 Takao Ueda Masanobu Ashida Toyoaki Miyagawa Corrosion protection behavior of reinforcing steel after desalination on concrete structure Soc Mater Sci, Japan Zairyo/Journal of the Society of Materials Science, Japan 0514-5163 48 8 907 912 19990000 10.2472/jsms.48.907 2-s2.0-0033353172 tueda0715/misc/23173842 Influence of Desalination on Behavior of PC Members Journal of Materials, Concrete Structures and Pavements 613 V-42/ 189 199 19990000 tueda0715/misc/23173847 デサリネーションによるPC鋼材の水素脆化に関する研究 コンクリート工学年次論文報告集 19 1 1101 1106 19970000 tueda0715/misc/23173841 Hydrogen embrittlement of prestressing steel bars due to applying desalination. 19 1 1101 1106 19970000 tueda0715/misc/23173839 Corrosion Behavior of Reinforcing Steel after Applying Desalination Proceedings of the Japan Concrete Institute 1 1101 1106 19960000 tueda0715/misc/23173838 Influence of Desalination on Bond Behavior between Concrete and Reinforcing Steel International Conference on Concrete under Severe Conditions 1 625 634 19950000 tueda0715/misc/23173837 Influence of Desalination on Bond Behavior between Concrete and Reinforcing Steel Proceedings of Japan Concrete Institute 16 1007 1012 19940000 土木学会 論文奨励賞 20010000 日本材料学会 学術奨励賞 20000000 土木学会 吉田研究奨励賞 19980000