Full Description This European Standard specifies a method for determining the dynamic viscosity of a bituminous binder over a range of temperatures by means of coaxial viscometer. NOTE:Unlike penetration-grade bitumen, polymer modified bitumens (PmB\'s) do not show a straight line on the Heukelom-Diagram. This implies that in order to obtain information about the temperature suceptibility of PmB\'s, viscosity should be measured at different temperatures.