Articles in Taxonomy

Development of performance tests for, and determination of the performance characteristics of, coloured bituminous pavements

This project was funded by the Belgian Bureau for Standardization (NBN) for a period of four years (1/10/2011 - 30/09/2014). It aimed mainly to:

  • develop performance tests for the objective determination of the colour and colourfastness of coloured bituminous mixtures;
  • assess the impact of the specific materials used on the mechanical performance characteristics of coloured asphalt mixtures;
  • verify the suitability of the European test methods for acceptance before and after laying.

Techniques for reduced-temperature asphalt production and their impact on asphalt performance

A highy topical subject in the contribution of road construction to sustainable development is the production of asphalt mixtures at lower temperatures (reduced-temperature asphalt, RTA), because of the advantages from the energy, environmental and engineering points of view. Within a project on European test methods for bituminous mixtures and binders that was initiated by the Belgian Bureau for Standardization (NBN) and aims among other things at improvements with a view to sustainable development, BRRC has undertaken to closely monitor the recent developments and achievements in the field of RTA, both in Belgium and abroad. This includes the following aspects:

New and improved types of asphalt

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The development of new applications and the constantly increasing demands on roads create a permanent need for innovative and improved types of asphalt that ensure higher performance and durability. Mix design with the PradoWin software package (see Components and mix design) and the set of performance tests on asphalt mixtures (see The development of tests for bitumens and asphalt mixtures) for which BRRC has equipped itself make it possible to develop new and optimize existing types. This is often followed by the construction and monitoring of test sections in cooperation with road authorities, which may result in recommendations and specifications.

Cold-mix asphalt

The advantages of cold-mix asphalt are mainly environmental: energy savings (no heating of the binder or the aggregates) and less pollution (dusting during the manufacture of the mixture).

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Two-layer porous asphalt

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Core Tasks (1)

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This project originated from the search for an alternative to conventional porous asphalt, which, while retaining the many advantages (acoustical properties, drainability, skid resistance, resistance to rutting) of this type of mixture, was required to reduce or limit its disadvantages (winter behaviour and durability).

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