水平ノッチのあるプレーンコンクリートの一面せん断実験 : マイクロメカニクスによる考察

概要

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For making clear the shear fracture mechanism of concrete, an experimental study on plain concrete subjected to shear was carried out. The shape of specimen was a horizontally double-notched concrete block. The loading was performed very slowly to monitor the process of crack initiation and propagation using a digital microscope, and the boundary conditions were changed to assess their effects on the cracking behaviour. Although macroscopic shear-failure in concrete was found in few specimen, we could find the good agreement with a result of numerical analysis till peak. The process of crack initiation and propagation of shear fracture were clearly observed by using a digital microscope. The experiments come to a better understanding of the fracture processes in concrete on the meso-level and the macro-level using a micromechanics approach.
社団法人日本建築学会の論文
2003-08-30