Study and characterization of the roughness:the interfaces of gravity dams

B. Rousseau, B. Ballivy, P. Rivard, J. Riss, A. Marache

In the proceedings of: GEO2011: 64th Canadian Geotechnical Conference, 14th Pan-American Conference on Soil Mechanics and Geotechnical Engineering, 5th Pan-American Conference on Teaching and Learning of Geotechnical Engineering

Session: Mining and Rock Mechanics

ABSTRACT: This article deals with the shear behavior of concrete-rock fractures under low normal stress of two dams from Quebec. These dams are located in two different geological areas. Samples from these dams were sheared under constant normal load and at the same time, laser scans of the fractures surfaces were done with a laser profilometer before and after shear test. From these data, a geostatistical study of roughness parameters has been realised. The whole study underlines some common characteristics between samples from the two dams despite the differences of substratum (limestone and granite).

RÉSUMÉ: -béton de deux barrages poids en béton québécois. Pour cela, des essais de cisaillement sous faible contrainte normale ont été conduits. Ces essais - et post-cisaillement ; à partir de ces numérisations, une étude géostatistique a été menée. Il en résulte la mise en évidence de

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