INFLUENCES OF AGGREGATE SIZE ON THE BEHAVIOR OF FRACTURE PROCESS ZONE IN CONCRETE

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  • コンクリートの破壊進行領域の性状に及ぼす骨材寸法の影響
  • コンクリート ノ ハカイ シンコウ リョウイキ ノ セイジョウ ニ オヨボス

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Abstract

Experiments were carried out by an alternative x-ray technique using contrast medium to investigate the inside behavior of the compact tension concrete specimens. As a result, successful detection of fracture process zone that was consists of numerous fine cracks forming from the tips of notch cut in the tension specimen was possible. The fracture process zone increased in width with larger aggregate. The fracture energy GF calculated by the area of the fracture plane also increased with larger aggregate. The fracture energy WF calculated by the volume of the fracture process zone was nearly constant regardless of the aggregate size.

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