The Long-Term Pavement Performance (LTPP) research program, a component of the Strategic Highway Research Program (SHRP), was launched in 1987 as a $50 million effort to collect field observations of both in-service and new, specially constructed test sections throughout North America. This paper deals primarily with the pavement distress evaluation...
Rapid Reconstruction of Concrete Slabs on Airfield Runways
The rapid reconstruction of concrete slabs on airfield runways is a technology presented to airports operation authorities in order to strictly shorten the reparation period when the runway is unpracticable. The French airports and airbases engineering services proceeded with two demonstration works on the BORDEAUX and NlMES airports. The reconstruction...
Interaction Between Mix Design Construction and Properties For RCCP
When roller-compacted concrete pavements (ReePi :11' u-cd ill Sweden, they are always used as a wear cour-e. Evpenenee shows that RCCP which have been laid meet the functional requirements. Carefully executed quality control is important for the results. Consequently two new lest methods. the Kango (cube) and the RA methods....
Effects of Temperature and Moisture on Concrete Pavements
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
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
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
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?
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
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
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
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....
The Design and Maintenance of Contraction Joints Behaviour of the Namur Test Road After 10 Years of Traffic
This article describes the behaviour after 10 years of service of the test sections constructed in 1979 on State road N 4 in the Belgian province of Namur, The object of this experiment, is to compare various types of contraction joint on the same site and under the same conditions...