Resources

Opening concrete pavements to traffic the day after placing has been a routine practice in Vienna for many years, but increasing traffic requires even shorter closure times. On motorways even a single lane can be closed to traffic only at night or at weekends. With a w/c of 0,35 and...

This paper describes the processes carried out in the crack and seat of an existing concrete pavement on the M40 Motorway in England.

Ultra thin white topping is a rehabilitation technique in which thin concrete overlay is placed on asphalt pavement in distress, and this work technique has been under research in Europe, USA and other countries. In this study, a small model experiment was conducted to see its applicability to the roads...

A new means for rehabilitation of severely cracked concrete slabs is a thin overlay of SIFCON (Slurry Infiltrated Fibre Concrete). This high strength concrete with an extremely high content of conventional steel fibres (about 10 % of volume) was invented in the USA and further developed by the central laboratory...

The pavement of the apron on Brussels National Airport, which was constructed in the early sixties, was forming cracks. Given that fragments of concrete could in time be a danger to the aircraft engines, a thorough renovation of the apron was imperative. The distinctive feature of the site is that...

Cement treated asphalt mixtures (CTAM), which are composed of an asphalt mixture and cement milk injected into voids of the asphalt mixture, were studied for use as a fast overlay material for airport pavements. The cement milk must have adequate fluidity for about 30 minutes and must develop a flexural...

The main runway of Lorient-Lann Bihoud airport was overlayed with continuously reinforced concrete in 1989. This operation is examplary because from the technical viewpoint it is still today the only one in Europe. This runway is used now for eight years by civil and military traffic. The cracking development is...

Due to the ever increasing traffic volumes, the repair of concrete pavements has become one of the most difficult problems. One of the means to help resolve this problem is the use of a high early strength concrete. At the Department of Civil Engineering of the K.U.Leuven a research program...

Whitetopping solutions for old flexible asphalt pavement overlays have been a challange for highway agencies and designers in the recent past years, with special regards to ultra-thin concrete overlays, also called by ultrathin whitetopping (UTW). Considering the needs of full bond between the UTW and the old asphalt concrete (AC)...

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...

Roundabouts have already been used in Belgium for several years to regulate traffic at major road intersections. The surfaces at roundabouts are particularly subject to tangential stresses that result from centrifugal forces and from the overload on the outside wheels by the more or less significant tilting of the vehicles...

The paper contains investigations of concrete debris generated during the compression testing of drilled cores and during hydrodemolition, l3ased on sieve analyses, average diameters of the debris samples are estimated. It is found that a fairly linear relation exists between the average size of the debris generated during the compressive...