Through expericnccs during the last years we have gained knowledge about the decisive factors to obtain a wear resistant concrete pavement. The most important factors are: the quality of the aggregate, the strength of the concrete, the adhesiveness between the cement paste and the aggregate particles, the maximum size of...
Technique to Create Wear Resistant Concrete
The Significance of Grain Size Distribution for the Behaviour of High Strength Concrete for Road Purposes
In the last years high strength concrete has been used more and more frequently for road construction in Norway. To obtain good abrasion properties and a good wurkaL,ility the quality of the coorco oggrogateE and the ovrall grain qi7 ,9 distribution is very important. By improving the abrasion properties it...
Measurement and lrnpruveiiieiit of Road Evenness on Concrete Roads
The evenness of concrete roads is one of the main concerns of this type of pavements in Spain. In the last years many improvements have been achieved in the way of finishing concrete roads. International Roughness Index (IRI) measurements are normally done to evaluate evenness. However, the normal approach used...
6th International Symposium on Concrete Roads 1990 Madrid Spain
Closing Addresses from the 6th International Symposium on Concrete Roads 1990 Madrid Spain
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
6th International Symposium on Concrete Roads 1990 Madrid Spain
Index of Proceedings from the 6th International Symposium on Concrete Roads 1990 Madrid Spain
The Influence of Dowel Deviation on Concrete Paving Slabs
A series of tests have been carried out to figure out the in-fluence of deviation of the dowels on concrete paving slabdowels with respect to slab movements through shrinking andthermal variations.The stresses produced in the slabs for various deviations withrespect to the theoretical position and according to the systemchosen to...
Design of Sand-Cement Base Courses Using Fracture Mechanics Principles
Sand-cement base courses exhibit shrinkage and fatigue crack-ing. Both types of cracks tend to reflect through the asphaltictop layers. An analysis has been made to determine pavementlife, which is defmed as the number of cycles until cracks arevisible at the pavement surface, by taking into account fatiguecrack initiation, propagation and...
Developments in Noise Redution of Concrete Roads in the Netherlands
In the Netherlands experiments have been performed recently :onceming noise reduction on concrete roads. Three pos-.ibilities are being investigated:I. Top layer of no-fines porous concrete.~. Surface of washed dense concrete.. Dense concrete with fine-grained epoxy surface treatment. noise emission level slightly higher than on porous asphalt,iut much less than on...
The Design of Concrete Block Pavements For Urban Roads
This design method for concrete block road pavements applies to block pavements (under normal road traffic), consisting of rectangular paving blocks (thickness ~ 80 mm) in herringbone bond, 50 mm crushed sand bedding layer, eventually an unbound base, and a sand sub-base. The design criterion for such pavements is rutting....
Data Base and Pavement Condition Surveys of Concrete Roads in the Shrp Long-Term Pavement Performance Study
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...
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...