The evaluation and control of vibrations induced in the environment by the road traffic is a problem of increasing concern mainly in urban areas. Several solutions are under development to define pavement structures capable of absorbing traffic vibrations so to reduce the impact on the environment surrounding the road infrastructure....
The Use of Crushed Concrete Aggregate in Concrete for An Industrial Road at Ouffet
In standard specifications 300 of 1994 (CCT 300) issued by the Ministry of the Walloon Region, permission is granted in the chapter dealing with cement concrete surfaces of roads belonging to roads with light traffic, to replace a maximum of 50 % of the granulates with crushed stones. The aim...
Computational Modelling in the Theory of Concrete Pavements
The jointed concrete pavement is analysed as a system of interacting rectangular slabs transferring wheel loads into an elastic layered subgrade. The finite element plate analysis is combined with the assumption of a linear contact stress variation over triangular elements of the contact region division. The linking forces are introduced...
The State of Temperature and Shrinkage Stress in CRCP in Curve Areas
In the literature of speciality there are studies about the calculus and behavior of continuously reinforced concrete pavements for alignment areas. In our paper we present some aspects of temperature variation and shrinkage stress in curve areas, taking also into account friction, which is determined experimentally in the laboratory. The...
Improvement of the Temperature-Shrinkage Crack Resistance in the Construction of Concrete Road Pavements
Measures of increasing the crack-and frost resistance of a cement concrete pavement are presented in the paper: -use of control joints in the fresh concrete, only placed in the morning time; - increase by20% of the amount of plasticizer, mixing duration and compaction time of concrete mix.
Road Cement Concrete with Lime Aggregate
The use of local aggregates of limestone nature for the producing of road cement concrete leads to obtaining numerous technical - economic advantages. Romania owns great limestone resources (over 3 milliards tons with an ensurance degree up to 999 years) smoothly spread over the entire surface of the country. In...
Progress in Concrete Road Materials and in the Construction Process
An industrial pavement with high durabilily iequiieiiieiils iiiade with "semi-continuous concrctc", high performance concrete with low cost materials and equipment is described.
Whole Life Costing
is important to have the knowledge about the connections between different costs and different surface characteristics of a pavement. The costs are for the road, traffic safety, road user and environment etc. The surface characteristics are things like friction, micro- and macro structure, iuts, evenness, cracks, sloping and drainage etc....
Evaluation on Serviceability and Durability of Concrete Pavement in Japanese Expressways
Pavement in Japanese Expressways consists of 90% of asphalt pavement and 10% of concrete pavement. The concrete pavement is generally planned to construct because of its high durability and less maintenance cost. The concrete pavement in Tohoku Expressway has been about 20 years in service since its construction. Therefore, including...
Belgian Applications of Concrete Inlays on Motorways
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...
Whitetoppings – Long Term Performance and Recommendations
Field tests have been carried out with thin, high strength concrete overlays (whitetoppings) placed on top of the milled asphalt pavement The aim is to find methods to restore rutted asphalt pavements and iliclease their rutting resistance. The whitetopping was limited to 70 mm. Both plain and steel fibre reinforced...
Surface Characteristics of Two Recently Constructed Trunk Roads in the UK
In an effort to tackle road traffic noise, research into quieter road surfaces has included trials of a new type of concrete surfacing called exposed aggregate concrete, which has been used in a number of other European countries. Two trials of exposed aggregate concrete have been constructed in the UK;...