Continuously Reinforced Concrete for the Diamond-Shaped Toll Square and the Pavement of the Licfkcnshocktunnol in Antwerp (Belgium)

Highways Members Only

For the construction of the LIEFKENSHOEK-toll tunnel under the river Scheldt, the Flemish Road Administration has once again chosen CRCP, 20 cm thick, as the best solution for the pavement inand outside the tunnel. By also choosing CRCP for the 30.000 m 2 diamond shaped toll-square, it was possible to...

Fine-Grained (Sand) Concrete for the Construction of Cement Concrete Road and Airfield Pavements

Airports, Highways Members Only

The problem of using fine-grained (sand) concrete instead of the "classic one in the construction of road and airfield pavements is analysed. In sand concrete the coarse aggregate, crushed stone or gravel, are substituted by natural sand or a blend of natural sand and screenings 0.5 (10) mm. The use...

Investigation on Thermal Stress and Prestress of a 151 m Prestressed Concrete Pavement

Highways Members Only

Few prestressed concrete pavements of more than 100 m length have been constructed in order to avoid the development of cracking at early ages as well as to get design prestress. It the prestressed concrete slab is paved as long as possible, the construction period is shorter and the cost...

European Concrete Pavement Trial Project in the USA

Highways Members Only

The State of Michigan in the United States of America constructed a trial project that incorporated highway pavement design features from Germany and Austria. The project considered a 25.4 cm unreinforced concrete pavement, over a 15.2 cm lean concrete base, over a 40.6 cm granular frost layer. The concrete pavement...

Effects of Temperature and Moisture on Concrete Pavements

Highways Members Only

During hardening concrete pavements do not have a uniform distribution of temperature throughout the thickness. The calculation of tem-perature stresses has to start from the differencebetween the zero-stress-temperature and the actualtemperature. Itisadvantageous if (for example dueto wet-curing) the zero-stress-temperature is lowerat the top than in the middle of the slab....

A Contractors View of Concrete Pavements in the Expanding Uk Market Place with Particular Reference to Continuously Reinforced Concrete Road Base

Highways Members Only

The paper reviews the reasons for continuously reinforced pavement design, and the economics of the choice of paving method. The current UK specification, its limitations and the potential va-riance with European and American specificationsare considered with its effect on the historic UKmarket, together with an opinion of the futuremarket.For the...

Low-Noise Surfacing on Concrete Roads

Highways Members Only

he Utrecht-Amersfoort motorway (A28) was constructed with onreinforced, lightly brushed cement concrete with dowels. r1easurements taken in 1987 indicated that the level of noise nconvenience to the surrounding area exceeded the legally per-ritted standard. In 1988 a 3,500 m stretch of the road was firstround until it was even, then...

High Strength Aggregate Rich Concrete For Pavements

Highways Members Only

During the last decades the use of Roller Compac-ted Concrete for pavements has increased worldwide. A concrete pavement of significant higherquality than typical Roller Compacted Concretehas been developed at Aalborg Portland. The con-creteisplaced and fullycompacted with an asphaltpaver, mounted with a heavy high-compactionscreed. No rollers have to be used. In...

Design of Low-Volume Concrete Roads. Tables Or Analytical Procedure?

Local Government Members Only

This paper deals with the problem of thickness design of low-volume roads. It examines the possible use of tables of minimal thickness or analytical methods, especially developed for low-volume roads (as in France and Belgium). Attention has been paid to realise the influence of design factors, such as traffic and...

Assessment of Survival Probabilities of Continuously Reinforced Concrete Pavements

Highways Members Only

This paper proposes a theoretically sound method of modeling the reliability function of pavement sections, using a statistical procedure that can correctly consider test sections that have not yet reached failure. Consistent and accurate reliability estimates were obtained applying this method to a continuously reinforced concrete pavements (CRCP) data base...

Continuously Reinforced Concrete Overlay Worksites. Planning on Motorways in Service. High Output Production Equipment

Highways Members Only

Since 1983, most of the work sites in France using Continuously Reinforced Concrete have been for overlaying work on existing motorways in service. As regards methods and equipment, this has necessitated high output production facilities to allow work to be complete as quickly as possible so as to minimize inconvenience...

Behaviour of Rolled Compacted Concrete Results of Measurements in Experimental Pavements

Highways Members Only

Precise measurements on experimental ruil scale pavements demonstrate that curling and warping phenomena arc affecting similarly the RCC and the conventional PCC pavements of equivalent designs: with «light differences in deflections and joint openings mainly attributed to different adherence at the slab-base interface. After IS months exposed to drying shrinkage....