VISCOSITY MODIFICATION AND CONTROL OF PITCH

摘要

The addition of low concentrations of certain oxygenated compounds, particularly esters, to bitumen has been shown to have a profound effect on viscosity. The bitumen in question includes but is not limited to petroleum pitch, coal tar pitch and asphalt cements. A cost effective source of esters has been found to be biodiesel. This paper will provide general information on biodiesel and detail its effect on the viscosity of bitumen as a function of concentration. Other topics of discussion are effects on other hydrocarbons.