During the past two decades, the practice-oriented research work done when concrete roads are built has lead to further development of slab construc-tion, to new solutions to individual constructio-nal problems, and to development of new cons-tructional methods. Based on existing research re-sults, more reliable statements can be made on thedegree...
Correlation Between Research and Construction of Concrete Roads
The Influence of Size and Hardness of Sand Particles and their Proportions on the Skid Resistance of Cement Mortars
irnestone and emery sands divided into 6 fractions, were used ,cast cement mortar specimens in PSV moulds. After 28-day ater curing the specimens were subjected to accelerated ilishing and their Skid Resistance Value (SRV) was measured ith the pendulum tester. Specimens of 100 % limestone or )0 % emery sand,...
Developments in Australian RCC
Australia has now over three years of experience in the use of high strength RCC in pavements with over 40 projects completed. Whilst the majority of Australian projects have been relatively small in comparison to American and European experience, nevertheless they have enabled a continued development of design, construction and...
Lean Concrete Hard Shoulders Alongside Continuous Reinforced Concrete Overlays
Today, the great majority of Emergency Hard shoulders on Continuous Reinforced Concrete Pavement Motorways of the French network are build with full thickness lean concrete. The principle of this process (background, drainage, laying, seals, surface treatment, concrete formulas) are described below.
Road Marking on Concrete Problems and Solutions
R.oadpaint containing a dissolving agent and hot applied ther-noplastic marking materials are most commonly used for roadnarking in the Netherlands. The only marking materials al-lowed on Dutch motorways are those that have proven theirsuitability in laboratory research and experimental sections on:he road. During a period of 25 years no concrete...
Various Construction Techniques in North America_ Asia and Europe Economic Construction with Roller-Compacted Concrete
Clients and contractors all over the world are aiming to reduce construction cost by using less expensive construction material and applying new, more economic construction methods. This is a continuous challenge to the manufacturers of construction machinery to modify existing machines or develop new ones to meet the contractor's requirements....
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...
Optimization of Surface Characteristics of Cement Concrete Roads
The surface properties of a road pavement must fulfill a long list of requirements. Recently this list has been extended to include acoustic properties. Roughness is characterized by micro-, macro- and megatexture. The results of measurement of skid resistance and road-tire noise are discussed. Possibilities for further optimization of the...
Roller Compacted Concrete RCC Pavements For Motorways and Main Highways the Spanish Practice
First applications of roller compacted concrete (RCC) pavements on main highways took place in Spain in 1984. Since this year, RCC pavements have been employed in a large variety of works, their total surface exceeding 1.600.000 m2 by the end of 1989. Up to now, their behaviour has been very...
5th International Symposium on Concrete Roads 1986 Aachen Germany
Closing ceremony from 5th International Symposium on Concrete Roads 1986 Aachen Germany
5th International Symposium on Concrete Roads 1986 Aachen Germany
Indexes, General Reports and Additional Contributions from 5th International Symposium on Concrete Roads 1986 Aachen Germany
5th International Symposium on Concrete Roads 1986 Aachen Germany
Index of Papers and Opening from Addresses from the 5th International Symposium on Concrete Roads 1986 Aachen Germany