Our investigation was aimed at obtaining information on the road pavements of several mountain road systems subjected to limited traffic and leading to sheep-farming settlements or woodland areas managed by local mountain consortia (Mountain Communities, CM). Steeper car-track sections were found to be paved in concrete to prevent vehicles from...
FEM Analysis on the Dynamic Behaviour of Concrete Road Superstructures
As a general rule procedures for the sizing of road superstructures only refer to static stress. Possible dynamic effects induced by loads are introduced by amplifying their intensity or by considering the dynamic modulus of the materials. Under variable stress in time, the real behaviour of a superstructure is remarkably...
The Use of Nuclear Gauges on Concrete Roads Under Construction
To ensure the satisfactory performance of rigid pavements, it is necessary to control the air content of the concrete slabs. The aim is to maintain a prescribed quantity of cntraincd air in surface slabs to rcducc frost damage. Also, it is required to minimise the quantity of air, which results...
Use of Superplasticized Fiber Reinforced Concrete in the Construction of Pavements
Fibre Reinforced Concrete (FRC) by itself has opened up a new era in the field of Civil Engineering. FRC has given altogether a new dimension to concrete technology. It is even difficult to imagine that just the addition of fibres into concrete mass can change the entire properties of concrete....
Methods of Repair Headrace Tunnel Invert – Repair of Deteriorated Headrace Tunnel by Using Slip Form – Paver Method
In Japan, hydro-electrical power plants are existing at approximately 1,800 places, but more than a half of such plants have been used over sixty years since the commencement of operation. Water channels that lead water, taken in from head areas, to hydro-electrical power plants are called the "headrace tunnel." The...
New Developments in Road Trackway Construction
A precast concrete slab trackway system developed for road railways in the seventies and a trackway system with glued rail fastening on underground and overground trackways will be reported on in this paper. As experienced, the glued fastening system proved to be more favourable in use. The Great Boulevard, one...
CRCP in France and Its Competitivity
It seems now in France that, after these experiences and their results, the idea to accept for CRCP, a bonding assumption on a bituminous support, is really and that CRCP technology can hope now a new positive future.
Longtime Experience with Exposed Aggregate Surfaces in Austria
Exposed aggregate surfaces MA 8 have been used in Austria on a !arge scale since 1990 and have proveu not only noise-reducing but also very skid resistant. On different motorway sections paved with the same quarzitic chippings 4/8 the friction values (Stuttgart friction meter, 60 km/h, with water, with slip)...
Monitoring Program for a Continuously Reinforced Concrete Roadbase in the E35 Highway in the Netherlands
On the European route E35 near Utrecht in the Netherlands a new highway section has been built. The authority in charge has chosen a continuously reinforced concrete roadbase. A monitoring program has been started to collect data from the pavement behaviour. The data will be used fnr rnmparing the chosen...
Use of Crack and Seat in Concrete Pavement Rehabilitation a Case Study
This paper describes the processes carried out in the crack and seat of an existing concrete pavement on the M40 Motorway in England.
Implementation of Ultra-Thin Whitetopping in Florida
In 1996, the Florida Department of Transportation (FDOT) started a research project to evaluate design, construction and performance of the ultra-thin whitetopping on asphalt pavements. Three UTW test tracks were constructed at the FDOT research facility in Gainesville, Florida. The design of the UTW test tracks included thicknesses ranging from...
Properties of Porous Concrete with High Strength
In recent years in Japan, permeable asphalt pavement, with its efficient drainage and reduced tire/road noise, has seen increasing use because permits safer driving and does not create environmental problems. For this study, inorganic materials were used to make porous concrete suitable for roadway use, without the addition of polymers....