Articles in Taxonomy

Determination of the mechanical performance characteristics of soils treated with cementitious road binders

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A prenormative research project for the determination of the mechanical performance characteristics of soils treated with cementitious road binders started on 1st September 2009. The second two-year period of this project, which was funded by the Belgian Federal Service “Economy”, expired on 31st December 2013. In this context BRRC purchased equipment for the splitting tensile strength (also called the “Brazilian”) test. With this test it is possible to determine the tensile strength and the elastic modulus of stabilized soils.

Skid resistance / Slipperiness

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Skid resistance is defined as the frictional resistance at the interface between a vehicle tyre and the road surface. It plays an important part in the safety of road users: a correlation has been demonstrated between the skid resistance of pavements and accident rates (see the diagram opposite) [of course, there are many other possible causes of accidents: human error, vehicle technical failure, weather conditions, other infrastructure-related factors, etc.]. Wet pavement skid resistance is considered here, since dry pavement skid resistance is rarely a problem. A rough contact between the road and the tyres makes it possible to utilize the friction forces in braking. These friction forces also allow easier cornering. As a result, it is obvious that road managers should pay much attention to skid resisistance and alert road users in time of any local problem with poor skid resistance, and also that they should replace the pavement as soon as possible by an adequately skid-resistant pavement.

INQUEST (2007-2008)

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This was also a small sequel project to SILVIA, which was funded under the 6th EU Framework Programme. It was carried out by a consortium of BRRC, DRI and FEHRL. The object was to disseminate the knowledge on low-noise pavements gained in the SILVIA project to countries which had not participated in SILVIA. A number of one-day workshops were held in six countries (Slovenia, Romania, Switzerland, Ireland, Portugal, and Greece). In addition, a European working group on the Acoustic classification of road surfaces was formed, which held its first meeting in Ljubljana in April 2008 and its second in Copenhagen in September 2008.

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Tools for road managers (for an objective and rational comprehensive approach to road management) – BRRC Synthesis F48/14

Several actors are in charge of constructing and maintaining road infrastructure. They may be regions or municipalities, but also managers of specific facilities such airfield strips, port areas, industrial areas, etc. All of them, however, are faced with the same challenges raised by ageing infrastructures, ever increasing traffic loads, and budget restrictions.

The quality of road infrastructure is important to all actors, but is perceived in different ways:

Quality control of earthworks and (sub)base layers

Both at the European and the global level, exchange and work structures are developing that foster technical progress in earthworks and earthmoving projects. They promote:
- a coordination of practices (establishment of standards institute);
- greater participation in research at the European and global levels;
- the scheduling of conferences for exchanges between professionals.

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