In Switzerland concrete pavements for roundabouts are considered a suitable and cost effective and above all a durable solution. The service life is estimated to be 40 to 50 years, what can only be achieved by concrete pavements.
Photometric Characterisation of the Concrete Pavement in the Sinard Tunnel Favouring a Sustainable Concrete Pavement
The Sinard tunnel (length 980 metres), located South of Grenoble, is one of the few in France to have a concrete pavement. Once the tunnel was opened to traffic, in 2007, a campaign of photometric measurements was initiated to follow the evolution of photometric characteristics of the concrete pavement with...
Main Road Rn7 Between La Pacaudière and Changy (Loire, France) A High Performance Treated Capping Layer at the Limit of the Specifications
A new section of main road Route Nationale 7 (RN7) has been under construction since 2007 between La Pacaudiere and Changy (Loire, France). The capping layer had to be treated with 1% lime and 5.5% cement. At the beginning of the working, the building company proposed another solution to build...
A Long-Life Continuously Reinforced Concrete Pavement in Service Since 1976 in Spain. Widening and Future
A 43 km long continuously reinforced concrete pavement was opened to traffic 34 years ago connecting three important cities in an industrial region in the North of Spain. Each carriageway has two lanes 3.75 m wide, an outer shoulder 3.00 m wide and an inner shoulder 1.50 m wide. A...
Development of the Next Generation Concrete Surfaces
In 2004 the ACPA, PCA, and IGGA cooperated in a research effort at Purdue Universitys Herrick Laboratories. The laboratorys Tire Pavement Test Apparatus (TPTA) is capable of testing any texture design and is not constrained by construction capabilities or costs associated with field test section construction and evaluation. The research...
Investigation and Classification of Low-Noise Concrete Roads
The noise emission performance of concrete roads has been a subject of thorough investigations in Austria in recent years. This focus is due to the predominance of concrete road surfaces in the Austrian high-level road network and to the long and successful tradition of using exposed aggregate cement concrete (EACC)...
A Case History of CRCP Rehabilitation on the E403 Motorway Near Bruges – Belgium
The section of the E403 (A17) motorway between Bruges and Kortrijk was built in continuously reinforced concrete in the early nineteen eighties. The construction work was carried out in four phases with substantial differences between the phases with respect to the width of the pavement, the sub-base and the position...
Permeability Behaviour of Recycled SFRC and Its Implications in the Durability Resistance of Rigid Pavements
Recycled steel fibres obtained from post-consumer tyres can be used as reinforcement for concrete pavements. They can improve the mechanical behaviour when compared to plain concrete, especially the post-cracking compressive, tensile and flexural strengths. Recycled fibres may also enhance shrinkage, fatigue and impact performance. However, it is important to understand...
Joints Design in Rigid Pavement Octagonal Slabs Linked with Square Slabs
This paper describes a new joint, in rigid pavement , employing octagonal slabs who link with square slabs, the angle between the sides of the octagonal slabs, have at each corner , 135 degrees. in any corner of this octagon, between the edges of the pavement. The square slab who...
Mix Design and Mechanical Evaluation of Hydraulically Bound Mixtures Made with Waste Foundry Sand and Steel Slags
The paper describes an experimental study concerning the use of hydraulically bound mixtures for roads and highways foundations, with the aggregate skeleton fully composed by industrial by-products, as foundry sands and steel slags, used with three different proportions. The laboratory investigation involved a preliminary study of the physical-geotechnical properties of...
Continuously Reinforced Concrete Pavement in the A-7 Mediterranean Motorway of Spain
Long-life concrete pavements require less frequent repair, rehabilitation, and reconstruction, and therefore contribute to improving highway safety and mitigating congestion. Experience with these pavements, including examples of concrete pavements that have remained in service for more than 35 years. CRCP set out to offer the market a new alternative in...
Exposed Aggregate Concrete Pavement Design Construction and Functional Performance-A Comparison of European and US Experiences
In 2006, a group of highway agency and paving industry representatives from the USA visited Europe in search of current practices for the design, construction, maintenance, and rehabilitation of concrete pavements. In every country visited, examples of exposed aggregate concrete were demonstrated. While not a new discovery, the discussions did...