The Netherlands has made a clear decision to increase traffic mobility by reducing the use of traffic lights wherever possible. If traffic lights are not to be used, crossings need to be changed. The easiest solution is to change crossings into roundabouts and this solution (depending of the volume of...
Design Philosophy of a Concrete Bone Roundabout (CBR)
New Technique for Silencing Existing Concrete Roads
Some concrete roads have been constructed and finished or textured that lead to an unfavourable texture. This kind of textures can lead to unacceptable high noise levels. However, from the civilengineering point of view these roads can be very durable. In those cases, only the surface needs a treatment to...
First Experiences with Continuously Reinforced Concrete Pavement (CRCP) in Canada
Since the early 1990s, the design of every type of pavement has been impacted by a major turnaround in Québec Transport Ministry (MTQ) standards. The main focus of this turnaround has been the structural design and the frost protection of every type of pavement, taking into account local climate and...
Decision Support Model for Road Pavements Based on Whole Life Costing, Life Cycle Analysis and Multi-Criteria Analysis
In response to the growing importance of sustainable building, designers, consultants and pavement managers now tend to make more rational decisions than before when comparing the pros and cons of the construction, maintenance and management of various types of road pavements. Asphalt and concrete pavements offer specific advantages that need...
Design Methods for Cement Bound Bases in Pavement Structures
Application of bound foundation materials is attractive and allows to reduce the required asphalt thickness due to the high stiffness of the cement bound material. Unfortunately, the design of a pavement with a bound base is not standard. This hampers the application of cemented waste materials in road bases. This...
Performance of Whitetopping in Florida
Since 1988, the Florida Department of Transportation (FDOT) has been monitoring the performance of the first experimental Whitetopping project in Florida for possible implementation as an option for rehabilitation of rutted and cracked asphalt pavements. The project includes three major sections with thicknesses of 150 mm (6 in.), 175 mm...
Continuously Reinforced Concrete Pavement for Combined Tram – Busway in Gent, Belgium
The project concerns the design and supervision of construction for the realisation of a new combined tramway and bus lane linking the main railway station of Gent (Belgium) with the exhibition halls at Flanders Expo. Fundamental criteria for the design included the durability of the pavement, a pleasing appearance compatible...
Maintenance and Comparison of Asphalt and Concrete Parts of Motorways in the Czech Republic
For a long time the professional community in the Czech Republic have been criticizing the fact, that construction, maintenance and rehabilitation of motorways are not systematically studied in light of technology, functionality and reliability in connection with economy of these processes. Therefore the authors of this paper began an R&D...
Green Highways North American Concrete Paving Industrys Perspective
Concrete pavements have long been considered the sustainable choice, simply due to their longevity. There are examples of both highways and local roads in North America where concrete pavements have lasted more than 50 years without significant maintenance. However, recent focus in North America on sustainable development and environmental stewardship...
A Fast and Comfortable Public Transport Lane in Continously Reinforced Concrete
The Zuidtangent is a free high quality public transport lane between the city of Haarlem and Schiphol Airpoprt. The full trajectoryi s built in continouusly reinforced concrete. In this paper some design aspects are described. Also the use of concrete as a wearing course on bridges and in tunnels is...
Surface Platforms For Public Transport New Perspectives: the Case of Cement Concrete
As a result of Urban Travel Plans implemented in major cities, public transport is being favoured as a convenient means of travel and mobility by all. Platforms (road- and trackbeds) designed for public transport must offer quality from the technical standpoint in order to handle channelled loads or the insertion...
Backcalculation Analysis of Concrete Pavements Using Fuzzy Logic Approach
It is known that concrete and flexible pavements are similar each other from the structural view point. Nowadays, especially, because of the innovations in airplane technology, airplane weights have been increased. Therefore airport maintenance has become more important. It is possible to obtain information about structural performance of a pavement...