The project deals with research on effective composite steel and concrete bridge structures, profiting from directly running cement concrete pavements. The aim is an innovative layout solution, technology of construction and maintenance and research of new formulas for concrete parts which will lead to lower collective costs of production and...
Road and Railway Tunnels the Concrete Solution for Improving Passenger Safety and Emergency Response
Road tunnels and railway tunnels generally, located in sensitive sites, must not be considered simply as an extension of standard open-air sections. For the road tunnels, the thickness of the structure, its future maintenance and the consequences on traffic, as also the effect on lighting of pavement lightness have to...
Continuously Reinforced Concrete Pavement with Asphalt Top Layer or Surface Texture from Diamond Grinding- the Trial Site on Motorway A94
For many years, the traffic volumes and percentage of heavy traffic on German roads and motorways have steadily increased and this trend is expected to continue in the future. To guarantee mobility in the future, road construction with a maximum service life and a minimum of necessary maintenance are needed....
Texture and Noise Characteristics of Exposed Aggregate Concrete Road Surfaces
Exposed aggregate cement concrete (EACC) road pavements are used on a large portion of the Austrian federal motorway network due to their durability and reduced noise emission. The standardized types with 8 and 11 mm chipping sizes have been characterized due to their noise emission and are subject to approval...
Evaluation of Excavatable Cement Treated Materials for Urban Areas
For networks owners, like the French national gas utility, it is essential to ensure a rapid access to their installations, even with a simple pick, for normal or emergency maintenance matters. Modular concrete pavements were developed during the last years for that purpose. In order to keep their stability, the...
Modular Security Barriers for Urban Demands Current and Demands State of the Art Solutions
Using appropriate security barriers for directing the traffic in urban areas, close to downtown, shopping centers, protecting working zones in urban areas in general, and separating traffic, is essential for the safety of different traffic users. The traffic flow at industrial, commercial and public areas is easily managed by using...
In-situ Architectural Concrete and Pre-Dosed Micro-Concrete for Wear Thin Layer Pavements in Urban Areas Diogo Menezes Square as an Example of Environmental Renovation
In this communication the development of non traditional-solutions for pavement surfaces will be assessed, by the use of colored pre-dosed micro-concrete or in situ concrete in thin layers of high performance architectural applications for urban, pedestrian, cycling and roads. This assessment will be focused on frequently technical constructive barriers inherent...
Towards a Standardized Design Structure for Concrete Tramways in Flanders
For more than ten years tramway structures in Flanders have been built in concrete, particularly those which are subject to traffic loading by trams and city buses. As there has never been a standardized design, a wide range of different solutions have been tried, either in jointed concrete slabs with...
Environmental Performances of Roller Compacted Concrete Pavement
The use of RCC is now well established for industrial pavements, and is spreading in North America and recently in Europe for transportation pavement with high mechanical performances requirements such as Tram or Bus platforms. Cost advantage and mechanical performances are two undeniable benefits of this technology. The development of...
Air Void Formation in the Laboratory and in Practice
As a result of a short mixing time excess air-entraining agent (AEA) is added during the production of air-entrained concrete to achieve the required air content. In this case, the fresh concrete contains AEA that has not been fully activated. If there is a subsequent input of mixing energy, the...
Precast and In-situ Concrete Barriers the Complete Safety Solution for Roadsides
The technology of in-situ concrete safety barriers has not really changed in the last two centuries. After an extensive development and crash-test program a new generation was created recently. This is a technical report on the right way to use in-situ concrete at today´s level of technology. In the central...
Optimal Pore Distribution of Porous Concrete Pavers Aggregate
Concrete pavers are often used for construction of urban area roads as they offer both easy and fast construction as well as high aesthetical value. Although noise reduction is also very important in urban areas, research focusing on low noise concrete pavers is still rare. This paper illustrates a study...