The space available on our roads is becoming less and less. All forecasts agree that the increase in traffic will also cotiliiiue to grow considerably in the years before us. At the same time, because of the changes in political conditions in Europe and the opening of the frontiers, there...
Development of Cement Treated Asphalt Mixtures for Pavement Rehabilitation
Cement treated asphalt mixtures (CTAM), which are composed of an asphalt mixture and cement milk injected into voids of the asphalt mixture, were studied for use as a fast overlay material for airport pavements. The cement milk must have adequate fluidity for about 30 minutes and must develop a flexural...
Elimination of Ruts at Intersections by Means of An Inlay/Overlay Made of Steel Fibre Concrete
To the North of Gent there is an important harbour and industrial zone. Because of the heavy traffic on the road connecting Gent and Zelzate (R4, section J. Kennedylaan), deep ruts have formed in the asphalt pavement, mainly at the junctions. In order to repair these ruts in a durable...
Concrete Safety Barriers and Coming European Standards
For the year-long approved concrete safety barriers, produced of in-situ concrete or prefabricated units, the new EN 1317 part 1 will discribe the general criterions of the test methods in the future, and part 2 the performance classes and acceptance criteriOns. The opening of the European Market has consequences for...
Reconstruction of Bituminous Paved Rural and Urban Roads in the Federal Republic of Germany Using Mix-In-Place Recycling with Cement
Mix-in-Place Recycling with cement stabilization is an economical and environmentally friendly method for the reconstruction of damaged asphalt roads and ways. The most remarkable characteristic of this method is that the entire existing road construction material can be used again for the new road pavement. This essay contains descriptions of...
Urban and Low Traffic Roads Industrial Pavements
In this paper some roads and industrial pavements where "semi-continuous concrete" was employed are prcscntcd as well as cost and performance under several conditions.
Possibilities of Quality Determination of Concrete Surface Layers
Possibilities of applying methods of surface absorption, mercury intrusion porosimetry, pull-off strength tests and thermal analysis in the assessment of the state of the surface layer of a concrete airport runway are given. The results of the tests of properties of differently deteriorated surface layers of concrete in an airport...
The Proposed European Standard for Concrete Pavements
This paper describes the present situation of the European Standards for Concrete Pavements. They are currently in prcparation by a Working Group created within the framework of Technical Committee CEN TC 227 "Road materials". Since many of the specifications for concrete and its constituents (cement, water, aggregates, admixtures) are covered...
Suitability of Superplasticized Recycled Aggregate Concrete in Road Construction
Piubably, in the years to come, the use of recycled aggregates in concrete may become the need of the day. This is becasue of the nonavailability of natural aggregates in some urban areas. Also, the enviromental laws may force for the closing down of aggregate plants. Apart from this, in...
The Willebroek Ring Road (N16) – a Development in the Construction of Concrete Roads
The Willebroek ring road is part of the N16 Mechelen - St. Niklaas road. The work was carried out in 3 phases, the first phase starting in 1986. In practice, the ring was constructed with 20 cm of continuously reinforced concrete (50.000 m 2 ). Exposed aggregate surface was required...
Roller Compacted Concrete Pavement Using Recycled Concrete Aggregate
Usage of recycled concrete aggregates produced from crushed demolished concrete has been limited due to its higher cost and the difficulty caused from its major ingredients, cement mortar, and by-product powder. However, the exhaustion of aggregate resources and increase demand of preserving the natural environment require developing an effective application...
Verification of the Acting of the Recycled Building Material for the Production of Rigid Pavements in Concrete of Portland Cement
The objective of the present work is the study of the technical viability of the use of refused material of building construction like aggregates for concrete roads. The first stage consisted of the physical characterization of the aggregates obtained through the grinding, followed by a study of the granulometric composition...