Articles in Taxonomy

Components and mix design

On distingue trois phases lors de la formulation des mélanges bitumineux:

Visual assessment of defects in a slurry surfacing (according to NBN-EN 12274-8)

This test method points out how defects of slurry surfacing can be visually assessed. Defects in slurry surfacing include bleeding and fatting up, delamination, loss of aggregate, wearing, lane joint gaps, rutting, slippage, corrugation, bumps and ridges, and groups of small defects or small repetitive defects.

They can be assessed in two ways: qualitatively and quantitatively.

A qualitative method will assess the rate of damage by simple rules. The quantitative method will measure the defects in much more detail.

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End of life strategies of asphalt pavements (Re-Road)

The main objective of this four-year European research project (from 1st January 2009 through 31st December 2012; fifteen partners) conducted under FP7 was to maximize the reuse of reclaimed asphalt (RA) in bituminous mixtures, with as little downscaling of the material and as little use of new material as possible.

Sectoral operator for E227 Road Materials

Ever since CEN/TC 227 Road Materials was formed in the late eighties, that is, before there were any plans to reorganize the standardization landscape in Belgium, BRRC has been a pioneer and an active participant in this committee. The main focus at the time was on the activities of WG1 Bituminous Mixtures and WG2 Surface Dressing, Sprays and Slurry Surfacing (incorporating Microsurfacing).

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European standards for surface dressings and slurry surfacings

The European standards for surface dressings (EN 12271 Surface dressing – Requirements) and slurry surfacings (EN 12273 Slurry surfacing – Requirements) have been approved by CEN working group TC227/WG2. One of the prominent features of these standards is that they set performance requirements rather than prescribing “recipes”. For some requirements the standards leave a number of options to the countries themselves.

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