TEN YEARS OF BELGIAN EXPERIENCE WITH POROUS ASPHALT. PROCEEDINGS OF THE INTERNATIONAL SYMPOSIUM: ROAD DEVELOPMENT AND SAFETY, LUXEMBOURG, JUNE 1989

DIX ANS D'EXPERIENCE AVES LES ENROBES DRAINANTS EN BELGIQUE

Porous (or draining) asphalt is a gap-graded bituminous mix containing about 22% voids after compaction. This high voids content creates a network of channels in the bulk of the mix, which acts both as a buffer store capable of absorbing considerable amounts of rainwater and as a draining course allowing the water to be drained off to the shoulders. This results in the absence of aquaplaning, increased skid resistance and reduced splash and spray behind vehicles. Further advantages are reductions in rolling noise level, in light reflection and in rolling resistance. The first experiment in Belgium dates back to 1979. Since then, some 2 million m have been laid on major roads, motorways, urban roads, tunnel roads and airfield strips. Since 1986, technical specifications are included in the official standard specifications. The Belgian Road Research Centre has been conducting extensive research into various aspects such as mix design, the influence of binder type, manufacturing and laying, the structural contribution, the development of permeability, skid resistance and rolling noise, winter behaviour, maintenance, the specific features of applications in built-up areas and in tunnels. The results of this research work and the acquired experience are discussed in the paper.(A) For the covering abstract of the conference see IRRD 828172.

• Corporate Authors:

  Institut National de Recherche Routiere (INRR)

  75, Rue de Mamer
  Luxembourg,   Luxembourg 
• Authors:
  • Moraux, C
• Publication Date: 1989

Language

• Undetermined

Media Info

• Pagination: p. 155-163
• Serial:
  • Publication of: Institut National de Recherche Routiere (INRR)
  • Publisher: Institut National de Recherche Routiere (INRR)

Subject/Index Terms

• TRT Terms: Aquaplanes; Bituminous materials; Coefficient of friction; Conferences; Drainage; Hydroplaning; Permeability; Porosity; Prevention; Reflectivity; Skid resistance; Sound level; Standards; Texture
• Uncontrolled Terms: Decreases
• Geographic Terms: Belgium
• Subject Areas: Data and Information Technology; Hydraulics and Hydrology; Marine Transportation; Security and Emergencies;

Filing Info

• Accession Number: 00604550
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Feb 28 1991 12:00AM