Decision –Making Support Model for Sustainable Road Pavements

Members Only

The task of calculating road pavements is an easy one. However, reaching the point of choosing a type of pavement one is confronted with many possible solutions. They can all meet to the technical terms, such as bearing capacity, safety and durability. The growing importance of sustainable building has added...

Improvement of Pavement Concrete Properties Using Mineral Additives

Members Only

In this paper is given overview of mineral additives that are used to improve mechanical and durability properties of concrete used in concrete pavements. Use of mineral additives is possible in two different ways, as a cement additive during production and as a concrete additive during preparation. Mineral additives analyzed...

A Double-Layered CRCP Experiences on the E34 Near Antwerp (Belgium)

Members Only

The technique of double-layered concrete or two-lift paving is applied either to obtain a high-quality top layer, to use lower quality materials in the lower lift, or for both reasons at the same time. In Europe this technique is commonly applied in Austria where a typical motorway is built with...

Whitetopping – A Quick and Cheap Way to Resolve Rutting

Members Only

Congestion on German roads increases permanently from year to year. According to the latest prognosis an end to the traffic increase – especially with regard to heavy traffic – is not in sight. At the same time the Federal government, the German states and communities lack capital for new infrastructure...

Three Year Performance of Continuously Reinforced Concrete Pavement with Glass Fibre Reinforced Polymer Bars

Members Only

The first continuous reinforced concrete pavement (CRCP) using steel bars as reinforcement in Canada was constructed in the province of Québec in 2000. At that time, Project Engineers and experts tried to adapt the design of this type of concrete pavement used in other countries to the severe wet-freeze climate...

Modern Concrete Safety Barriers State of the Art 2010

Members Only

Since the beginning of the development of concrete vehicle restraint systems in the 1960s with the introduction of the New Jersey profile in the United States quite a lot of efforts have been taken by researchers, authorities and industry worldwide to raise effectiveness and safety of concrete and steel barriers....

Assessment of Pick-Excavability of Controlled Low-Strength Materials for Trenches

Members Only

This paper reports research concerning the excavatability assessment of controlled low-strength materials for trenches with a pick, thanks to the proposal of a laboratory and a field test. Attention is specially focused on air-entrained mortars and very lean concretes. The scientific approach is first presented. Then details and results on...

The Surface Picture of Non-Reinforced Concrete Pavements During Its Usable Lifetime as a Decision Basis for Maintenance

Highways Members Only

The performance of road surface is the first and main indicator of information of the condition of the road. For some singular damages in-depth analysis is not necessary; for these an instruction for an appropriate maintenance measure is possible. However, by area-wide recurrent or systematic damages causes are important in...

Lessons Learned from a Swedish Harbour Concrete Pavement

Highways Members Only

In 1999, a 60 000 m2 large concrete pavement was completed in a Swedish harbour. The largest part of the area consisted of 200-210 mm thick plain jointed concrete pavement (PJCP) overlaying an old asphalt pavement. The design was based on certain prerequisite concerning traffic loads, i.e., axle loads and...

Innovative Prefabrication Techniques for Pavement Infrastructure

Highways Members Only

The advantages of prefabrication and precasting are well known in the building industry: a short building-time, efficient use of materials, optimum quality control, financially appealing and sophisticated logistics. In residential, commercial and industrial building in the Netherlands, the use of prefabrication is common practice. It would be logical to assume...

The Motorway E40 (Formerly E5) from Brussels to Liège

Highways Members Only

On 13 December 1967, the “E5” Partnership was established in Belgium with the objective of constructing the Brussels-Liège motorway. This was the missing piece in Belgium of the E5 European route, which extends from London over Calais-Jabbeke, Brussels, Liège, Cologne, Frankfurt and Vienna to Ankara. Later, the name E5 was...

Concrete Pavements in Highway Tunnels

Highways Members Only

Since the 2001 were constructed in Slovakia three highway tunnels with cement concrete pavements. This paper presents the Technical recommendation – the concrete pavement design method used for the design and calculation of pavement structures. According the different “climate conditions” in tunnels (concerning temperature gradients in slab), there are in...