Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Abstract In this study, it is shown that the toughness of concrete calculated using the classical compliance method is not an intrinsic property of the material, since it depends on the loading rate even in the quasi-static condition. It would seem that this toughness is a decreasing linear function of the crack propagation velocity, at least in the range of crack propagation velocities obtained in the test presented. It is proposed that the propagation of a crack in concrete may be investigated from the standpoint of the propagation of a crack under conditions of confined viscoelasticity; a possible physical explanation of this confined viscoelasticity (this is an hypothesis) is coupling between the microcracking at the end of the propagating macrocrack and water vapour diffusion.
Abstract In this study, it is shown that the toughness of concrete calculated using the classical compliance method is not an intrinsic property of the material, since it depends on the loading rate even in the quasi-static condition. It would seem that this toughness is a decreasing linear function of the crack propagation velocity, at least in the range of crack propagation velocities obtained in the test presented. It is proposed that the propagation of a crack in concrete may be investigated from the standpoint of the propagation of a crack under conditions of confined viscoelasticity; a possible physical explanation of this confined viscoelasticity (this is an hypothesis) is coupling between the microcracking at the end of the propagating macrocrack and water vapour diffusion.
Coupling between the crack propagation velocity and the vapour diffusion in concrete
Rossi, P. (Autor:in)
1989
Aufsatz (Zeitschrift)
Englisch
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