Abstract
A review is done on the geometrical description of the joint surface roughness morphology to define asperity angularities and spatial information on roughness structures. Characterization of damaged areas, in relation with shear displacement under three different constant normal stress magnitude is discussed within the more global contact area ratio. A synthetis of matched joint shear behavior offer the basis for a qualitative evaluation of the coupling complexity between the mechanical behavior and void space evolution between the joint walls during shear displacement on the basis of the morphological characteristics of the joint surface roughness and contact/damaged areas analyses sustained by joint shear test results from natural joint replicas.
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