IP 505: Bitumen and bituminous binders - Determination of viscosity of bitumen using a rotating spindle apparatus

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  • Method adopted/last revised: 2010
  • Method reapproved: None
  • Status: Current
  • First printed in STM books: January 2010


This European Standard specifies a method for the determination of the dynamic viscosity of bituminous binders at a range of temperatures by means of a coaxial viscometer. The typical range of application is from 50 °C to 250 °C using a rotating spindle apparatus.

The method can be used to measure the apparent viscosity of bitumen at application temperatures.

NOTE Some bitumens may exhibit non-Newtonian behaviour under the conditions of this method. Since non-Newtonian viscosity values are not unique material properties, but reflect the behaviour of the fluid and the measurement system, it should be recognised that measurements made by this method may not always predict performance under the conditions of use.

Comparisons between non-Newtonian viscosities should be made only for measurements under similar conditions of shear stress and shear rate.

This test method supercedes IP 514 and IP 546.

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