Kinematics of water between cracks of structural concrete subjected to repetition of opening –closure process under cyclic loads
| Jazyk: | japonština |
|---|---|
| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | 科学研究費助成事業（科学研究費補助金）研究成果報告書. :1-5 |
| Popis: | 研究成果の概要 (和文) : コンクリートにひび割れが発生することによる透水性の変化およびひび割れ幅（ひずみ），ひび割れ透水性，ひび割れ間隙水圧に関するモデルを提案した．検証のため，意図的にひび割れを生じさせたコンクリート試験体を水槽中で載荷し，載荷速度と載荷波形をパラメータとした繰返し載荷を行いひび割れ付近の水圧変動をハイドロフォンにより測定した．ひび割れ閉合時の圧力上昇はほぼ予測通り補足できた一方，ひび割れ開口時負圧の発生の確証には至らなかった． 研究成果の概要 (英文) : Theoretical model relating permeability of concrete cracks, crack width and water pressure between crack was proposed. To verify the model, simple experiment was performed. Small concrete beam with artificial single crack and RC beams are examined by high-speed cyclic load under submerged condition. Changes of water pressure were measured by hydrophone during loading. Measured pressure increases agreed with the prediction, however the existence of negative pressure could not be captured in the experiments. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|