Experimental Determination of the Relation Between the Damaged Zone and the Aggregate Size in Concrete Through Acoustic and Mechanical Techniques

by D. Fokwa, CNRS, Cachan, France,
Y. Berthaud, CNRS, Cachan, France,
D. Breysse, CNRS, Cachan, France,

Abstract: The size of aggregates in concrete has an influence on the behavior of the material. The width of the localized band can be related to this characteristic. Different experimental techniques are used and their results are compared. The validity of the hypothethis used in the calculations are discussed through the acoustic experiments. The characteristic length of microconcrete is found to be between four and six times the maximum aggregate size.

Subject Headings: Aggregates | Concrete | Acoustic techniques | Emissions | Material tests | Cracking | Grain (material)

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