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Procedure for the estimation of the kerosene content of cutback bitumen (T09)

Published: | Category: Materials , Chipsealing , Specifications | Audiences: Road traffic engineers & consultants, Roading contractors

NZTA T09 Procedure for the Procedure for the Estimation of the Kerosene Content of Cutback Bitumen sets out a procedure by which the kerosene content of cutback bitumen is estimated from the kinematic viscosity of a sample. The viscosity of the base bitumen and the contribution of other diluents is assumed.

The areas covered by the procedure include:

  • determination of the kinematic viscosity of a cutback bitumen sample
  • the calculation of the estimated kerosene content.

NZTA T09 specification replaces the version issued in 2003.

Publication details

  • Author:
  • Published: 5 June 2025
  • Reference: NZTA T09
  • Contact: pavements@nzta.govt.nz
  • Conditions: This specification is mandatory for state highways and recommended for local roads.
  • Also known as: T/9; T/09

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