Abstract

In order to obtain significant costs reductions associated with the use of road bitumen in asphalt mixes, this product currently being only obtained through imports, an ample research have been undertaken regarding the use of bituminous sands or oil sands, which present great advantages, especially in areas near deposits located in Bihor County. These raw materials present the advantage of having a percentage of natural bitumen in their mineral composition and thus their usage for asphalt mixtures preparation leads to substantial reductions of bitumen quantities required in the mix. Specific technological recipes have been researched in road laboratory, based on the department norm CD 42-85, concerning the direct use of oil sands, with and without adding hard paving grade bitumen, for warm asphaltic road pavement construction.