A chemical investigation of the asphalt in the tar sands of northern Alberta.

摘要

Asphalt is a commodity of continually increasing importance. Although its chief use is still as a binder in the construction of asphalt pavements, it is not limited to this, but is now utilized in the manufacture of paints, varnishes, roofing material, insulating material etc. Much has been written about the physical and chemical properties of asphalt as a whole, such as change in structure upon heating, exposure to light and air, the action of solvents and acids, yet amongst this mass of literature one finds very little information on their ultimate chemical constitution. [...]