Concrete Highway Pavement with Thin Upper Layer Concrete and Concrete Pavement on Short Bridges


For concrete pavements the new “thin upper layer concrete“ construction method, potentially in connection with the method of “thick concrete pavement“ placed on an unbound roadbase enables a 40mm thick upper layer concrete having a maximum aggregate size of only 8mm to be placed instead of a 70mm thick upper...

The Use of Continuously Reinforced Concrete Overlays in Motorway Maintenance (A Case Study)


How do you undertake the repair of a jointed concrete carriageway on one of the busiest motorways in Europe, particularly when a large proportion of the joints have failed and the slabs are floating on a sea of Gault Clay. With differential settlements so severe that there was genuine concern...

First Application of a Concrete Inlay on a Bitumen Paved Motorway in Belgium


The motorway A7, also called the "Motorway of Wallonia", was opened to traffic in December 1970. In the vicinity of Mons this motorway carries a very high volume of heavy traffic, which is still increasing. The right-hand (slow) lane is subject to severe rutting, which has affected the deeper layers....

Laboratory Tests on Thin Bonded Overlays


The "technique of thin bonded overlays" has been applied to restore damaged concrete pavement surfaces. In this article results from laboratory tests concerning different combinations of repair mortars and several support concretes are piesciuted and discussed. Bond strength of the overlay to the supporting concrete has been assessed by means...

Swedish Experience with and Recommendations for Thin Concrete Overlays on Old Concrete Roads


This paper describes the Swedish experience with thin concrete overlays on old rutted concrete roads. In Sweden, the use of studded tyres leads to wedi and rutting on highways with intensive traffic. In the late seventies, some concrete roads were built in the South of Sweden. A thin concrete overlay...

Thin Concrete Overlays on Old Flexible Pavements


Extensive rutting exists on many high volume traffic roads in Sweden. Traditional maintenance means asphalt resurfacing every second or third year. Adding a thin high strength concrete overlay would prolong the service life of the repair due to the high wear resistance of this kind of overlay. To study the...

Thin Steel Fiber Reinforced Concrete Overlays and Inlays


Between 1982 aiid 1989, 8 thin overlay test sections were constructed with a total surface area of 129.000 m2 . The relevant research project is carried out with a view to the necessary future renovation of part of the Belgium road network. All sections were built with 10 to 12...

A CRCP Inlay for the Rehabilitation of a Deteriorated Concrete Pavement on a Motorway with Very Heavy Traffic


Short description of the rehabilitation works on the most heavily trafficked motorway in Belgium.

Concrete Overlay Thickness Design Based on FWD Deflections for Airports


Since the overlay thickness must be decided considerinq the structural condition of the existing pavement, FWD was introduced to evaluate the mechanical properties and to obtain input data for the overlay design. In the case of concrete overlays for concrete pavements, the overlay thickness depends on the existing slab thickness...

Evaluation of Concrete Pavements on the Restauration with Thin Aspahit Layers


To improve the surface quality or the water drainage and the service life of a mediocre damaged concrete pavement, this pavement can be overlaid with a 4 to 6 cm thick asphalt layer. The status of the concrete pavement and of the joints with respect to potential reflection cracks needs...

6th International Symposium on Concrete Roads 1990 Madrid Spain


Session Paper Indexes, Opening Addresses, General Reports, Oral Contributions and Closings from the 6th International Symposium on Concrete Roads 1990 Madrid Spain

New Concrete Pavement Structures in the Revision of the French Catalogue of New Pavements and in the Technical Guide of Overlays


The documents for conception and design of new and reinforcement works on the French national road network were updated in 1988to take into account new pavement designs and techniques: dowelled slabs, continuously reinforced concrete, thick slabs on porous course, cement processed materials subbases. The article explains: - the development of...