Kinematic Viscosity

The kinematic viscosity of a liquid is the absolute (or dynamic) viscosity divided by the density of the liquid at the temperature of measurement.  The 135° C (275° F) measurement temperature was chosen to simulate the mixing and laydown temperatures typically encountered in HMA pavement construction.

The basic kinematic viscosity test measures the time it takes for a fixed volume of asphalt binder to flow through a capillary viscometer under closely controlled conditions of head and temperature (ASTM, 2001[1]).

Standard Test Methods

  • AASHTO T 201 and ASTM D 2170: Kinematic Viscosity of Asphalts (Bitumens)



Footnotes    (↵ returns to text)
  1. American Society for Testing and Materials (ASTM).  (2001).  Annual Book of ASTM Standards, Section four: Construction.  vol. 4.03.  American Society for Testing and Materials.  West Conshohocken, PA.