Block or slab pavements with concrete or natural stones are mainly used for communal areas, where a variety in creation is welcome, but also the lifespan of the pavement is very important. At pedestrian precincts, which are also trafficked by trucks, often high vertical and horizontal loads occur. If the...
Measurements of Fuel Consumption on An Asphalt Pavement and a Concrete Pavement in Sweden
In order to increase knowledge of how fuel consumption corresponds to pavement type, the Swedish National Road and Transport Research Institute (VTI) was commissioned to investigate the difference between asphalt and concrete pavement surfaces. Measurements were made north of Uppsala, Sweden; where a motorway section included both types of pavement....
Demonstrating the Use of Ultra Thin Reinforced Concrete Pavements to Serve Residential Areas in Cities
On 19 May 2006, the Premier of the Gauteng Province in South Africa announced the project: gravel roads to surfaced roads, stormwater drainage and walkways projects within the top twenty townships (20T Project). The main aim of the project was to improve the living conditions of communities in previous neglected...
Environmentally Friendly and Durable Concrete Barrier (A73)
A safe and durable concrete barrier has been built on the A73 in the southern part of The Netherlands (Province of Limburg). The decision to install this barrier was based on consumer-focused networking. The benefits of concrete barriers were illustrated during the networking process, including the prevention of break-through and...
The Cyclo-Pedestrian Footbridge Over the Former L160 Railway Line in Brussels
The cyclo-pedestrian footbridge built at the beginning of 2009 over the former L160 railway line in Brussels (Auderghem) consists of a 58-metre long reinforced concrete slab (cross-section 4.50m x 0.30m), chaotically supported by 37 wooden stilts (Douglas Fir). Its horizontal stability is ensured by two concrete abutments; the stilts, ball-and-socket...
Cyclic CBR Test of the Natural and Improved Soils
Improvement or stabilization of soils in subgrade by using lime or binders can provide significantly improved engineering properties. The results of soil improvement can be very substantial increases in resilient modulus values, in shear strength, continued strength gain with time even after periods of damage and long-term durability over decades...
Nonwoven Geotextile Interlayers for Separating Cementitious Pavement Layers Use in Germany Leads to Better Practice in Us
Nonwoven geotextiles between cementitious layers have been part of the design and construction of concrete pavements in Germany since 1981. German experience with nonwoven geotextile interlayers includes the design and construction of unbonded overlays and new pavement. German pavement engineers recognize that nonwoven geotextile interlayers provide three specific functions that...
Introduction of New Requirements for Concretes for Road and Airfield Pavements in Russia
Worlds and domestic experiences in constructing cement concrete pavements confirm that the concrete resistance to the action of frost and de-icing agents depends on the content of the conventially-closed air voids in hardened concrete. In Russia the requirements for the content of the air voids in hardened concrete based on...
Concrete Roadways and Air Quality – Assessment of Trials in Vanves in the Heart of the Paris Region
Despite the considerable progress achieved by automakers and public policy efforts to promote '"soft" and "public" travel modes, the air quality of our streets can become critical at singular periods of the year, particularly for the more fragile populations. It is possible today to reduce the most harmful nitrogen oxides,...
Experience with the Construction of An Ultra-Thin Continuously Reinforced Concrete Pavement
This paper describes the design and construction of an Ultra-Thin Continuously Reinforced Concrete Pavement (UTCRCP) that has been constructed near Paarl, Western Cape, South Africa. The UTCRCP may be described as a specific implementation of Strain Hardening Cement-based Composites (SHCC) in the field of pavement engineering. Mix design of the...
The Ekkersrijt Sustainable Roundabout Construction (A50)
At the exits and especially the entrances of Ekkersrijt in the Ring of Eindhoven (a part of the A50) is a problematic situation. Close to these entrances and exits there is a concrete elements factory (Betonson) which is producing elements with big dimensions. That means not only heavy loads (which...
Execution of Concrete Pavements with a Fixed Moulds System the Experience of Portuguese Air Force
Portuguese Air Force (PoAF) has, over the years, adopted the above mentioned solution for the construction of concrete pavements in their operational areas, considering this is the best suited technical and economical option to build and carry out aeronautical pavements in a successful way. Although this solution has higher initial...