milad tajdini - Ph.D. in Geotechnical engineering Tabriz university
taleb kazemi sheikhzahedi - Ms.C. Transportation engineering IAU South Tehran Branch
reza kiarostami - Ms.C hydraulic structure engineering Khatam Alanbia University

Asphaltic concrete has been used as waterproofing core in embankment dams. In this application, granular materials are used around the asphaltic concrete as filter, which makes a complicated behavior in the interface and needs to be researched by experiments and modeling. This paper describes experimental work and the results of investigating the mechanical behavior of the interface between aggregates and asphaltic concrete. Small scale shear strength test has been used in this study, in which the shear surface is considered as the interface. As could be seen all the shear parameters of interface reduces dramatically rather than pure sand. Also strength of granular material has a sensible difference with interface material.

Asphalt Concrete, granular Material, Interface, Small Scale Direct Shear Test