- Accueil
- Volume 11 (1992)
- Number 2 - Dec. 1992
- On quantitative fractographic analysis of high density concretes
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On quantitative fractographic analysis of high density concretes
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Abstract
Fracture toughness tests in mode II for dense concrete with the w/c (water to cement) ratio varying from 0.6 to 0.9 were reported. Profile lines of fractured concrete specimens underwent independent, dual quantitative analysis: using image analyser Quantimet 720 and tablet digitizer coupled with an IBM PC personal computer. The results of fracture toughness tests were compared to fracture profile line parameters. It was demonstrated that the RL-KIIc and RL-JIIc relations evaluated for ordinary concrete were not valid for dense concrete (RL denoted linear roughness, while KIIc and JIIc denoted fracture toughness).