Today all highways and road managers are confronted with the problem of the rutting of dense asphaltic concrete roads due to the steady traffic increase of heavy vehicles. Consequently, the lifetime of the low speed right lane decreases much faster than the lifetime of the left lane, which is merely...
Belgian Applications of Concrete Inlays on Motorways
Mechanical Properties and Structure of Porous Concrete
A test road with 40 n-mi porous concrete top layer on a 180 mm thick continuously reinforced concrete pavement has been constructed in May 1996 in Belgium following the wet-in-wet method. A preliminary test program was conducted at the Catholic University of Leuven to reveal the influence of different polymer...
Stiff Concrete Paving on Minor Road Systems – Results of a National Inquiry About Mountain Roads
Our investigation was aimed at obtaining information on the road pavements of several mountain road systems subjected to limited traffic and leading to sheep-farming settlements or woodland areas managed by local mountain consortia (Mountain Communities, CM). Steeper car-track sections were found to be paved in concrete to prevent vehicles from...
Project Instrumentation Installation and Presentation of Results
This article presents the design criteria and operating procedures adopted for the installation of the instrumentation devices to record the variations in "sIowIy changing quantities affected by temperature and humidity as well as by traffic-induced dynamic" phenomena. Interesting trends and correlations between the various physical quantities measured have been found....
The Benefits to Turkey’s Economy of the Selection of the Pavement Superstructure
In this paper we discuss about how to select the best pavement type to minimize the pavement cost. It is studied which pavement type (flexible or rigid pavement alternatively) is more suitable for Turkey taking into account economic criteria. The most important parameters for choosing the type of pavement are...
Study on the Meclidilical Behaviour of Precast Concrete Pavements
Precast concrete pavements (PCCP) are constructed by placing small size precast concrete slabs on the subbase. In this paper, the loading and warping stresses are discussed based on the results of the experiment and FEM analysis. A test pavement was constructed using 1 - 3 m size and 150 mm...
Cycling on Peat
A cycle track had to be laid quickly on a poor load-bearing subsoil, 18 m of peat. The usual design would have caused excessive subsidence and damage to the adjacent road. The chosen solution was a "floating" structure. In the design the upward pressure of the groundwater was considered to...
Wear Resistant and Noise Reducing Concrete for Road Pavements
Rutting, depending on the wear of studded tyres, is a problem in the Skandinavian couritiis. Concrete pavements have a good wear resistance. In Ai.ustria they have recently developed a low noise concrete with small aggregate size and exposed aggregate. Earlier experiences have shown that the wear resistance of concrete is...
Noise Reduction on Concrete Paving Blocks
Today the people in the cities require, more than in former times, a nice looking but also noice reduced pavement. The aim of our one year trial in 1 9w92h,i ch was promoted by the Austrian innovation fund, was to fulfill the requirements mentioned above. 1200 m of new concrete...
Conclusions from the Longtime Behaviour of Cement Bound Road Bases
Cement-bound road bases of 16 heavily loaded Autobahns in West Germany (12 road bases under concrete pavements and 4 under asphalt pavements) were investigated regarding bond, damage due to frost and erosion, compressive strength, water permeability, frost and erosion resistance. The investigations showed that cement-bound road bases are proved in...
Longtime Behaviour of Concrete Roads and Efficiency
A project for a building sliuuld include a forecast obout the longtime behaviour. With the cost benefit analysis the technical longtime behaviour can be expressed in figures. In the case of the road pavements these costs are costs for the government and for the road users. The estirlIdLiull can be...
Development of a Test to Compare Anti-Reflective Cracking Treatments
In Spain, like in other European countries, during the last twenty years roads constructed with cement bound base layers have had many maintenance problems due to reflective cracking. It is impossible to know the effectiveness of the new treatments which are applied as anti-reflective cracking measures. Therefore a laboratory test...