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Mechanical damage, chemical damage and permeability in quasi-brittle cementitious materials
The serviceability of concrete structures is a coupled problem in which fracture and damage are coupled with several environmental attacks. In this paper, we start with the description of chemo-mechanical damage and the case of calcium leaching which is relevant to waste containment vessels. The second example of implementation of continuum damage models discussed deals with coupled damage permeability effects. In the case of diffuse damage, the material permeability is controlled by the decrease of average stiffness due to micro-cracking. After a macro-crack has formed, permeability is controlled by a power function of the crack opening (Poiseuille flow). A relationship between permeability and damage, consistent with the two above asymptotic cases, is defined.
Mechanical damage, chemical damage and permeability in quasi-brittle cementitious materials
The serviceability of concrete structures is a coupled problem in which fracture and damage are coupled with several environmental attacks. In this paper, we start with the description of chemo-mechanical damage and the case of calcium leaching which is relevant to waste containment vessels. The second example of implementation of continuum damage models discussed deals with coupled damage permeability effects. In the case of diffuse damage, the material permeability is controlled by the decrease of average stiffness due to micro-cracking. After a macro-crack has formed, permeability is controlled by a power function of the crack opening (Poiseuille flow). A relationship between permeability and damage, consistent with the two above asymptotic cases, is defined.
Mechanical damage, chemical damage and permeability in quasi-brittle cementitious materials
Pijaudier-Cabot, Gilles (author) / La Borderie, Christian (author)
European Journal of Environmental and Civil Engineering ; 13 ; 963-982
2009-09-01
20 pages
Article (Journal)
Electronic Resource
Unknown
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