The effect of type of sand on the interface

Milad Tajdini¹ Seyed Mahdi Mostafavi² Seyed Ahmad Mirsaneyi³

1) phd tabriz university
2) IAU Saveh
3) Kosar Institute

Publication : 2nd International Congress on Civil Engineering, Architecture, Building Materials and Environment(caucong.com/2nd)
Abstract :
Asphaltic concrete has been used as waterproofing core in embankment dams, since 1948. 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. The effect of bitumen penetration grade, moisture, density and angularity of aggregates on the shear strength parameters at different levels of normal stresses and a constant shear rate have been studied. The results show that the shear strength parameters increase with increasing the density and normal stress level. It is also shown that the shear parameters decrease with increasing moisture content in the interface. Results showed that shape of granular could be effective on shear strength.
Keywords : Key words: Asphalt Concrete Sand Material Interface shape of granular.