Conf. Paper (EUPAVE)

The State of Michigan in the United States of America constructed a trial project that incorporated highway pavement design features from Germany and Austria. The project considered a 25.4 cm unreinforced concrete pavement, over a 15.2 cm lean concrete base, over a 40.6 cm granular frost layer. The concrete pavement...

This article presents the design criteria and operating procedures adopted for the installation of the instrumentation devices to record the variations in "sIowIy changing quantities affected by temperature and humidity as well as by traffic-induced dynamic" phenomena. Interesting trends and correlations between the various physical quantities measured have been found....

In this paper we discuss about how to select the best pavement type to minimize the pavement cost. It is studied which pavement type (flexible or rigid pavement alternatively) is more suitable for Turkey taking into account economic criteria. The most important parameters for choosing the type of pavement are...

Fast track paving has been a daily routine in Vienna since the early 80ies. To meet the requirements for opening to traffic (flexural strength at least 3.85 N/mm 2 ) quickly, super-plasticized concrete with a w/c-ratio below 0.42 is used and opened to traffic the second day after placing. If...

In Switzerland deposits of gravel are growing scarce. For this and ecological reasons an effort is being made to recycle material, i.e. material produced by roadway demolition -instead of being dumpedshould be re-used in a way to achieve the highest possible quality. This means orderly reconstruction and separation of the...

Conventional concrete safety barriers of the New Jersey type are frequently used in Belgium. At the end of 1993 more than 1600 km had been placed. Slightly higher precast safety barriers connected by a Swedish system have been successfully used especially to separate the traffic during reconstruction works of a...

As a number of CRC sections were gradually reaching a respectable age, the CRIC undertook an investigation in 1990 on possible corrosion of reinforcements. The close average spacing ot cracks (40 to 60 cm) in sections with 0.85% of steel and a bituminous base course was surprising. On the other...

Cement for concrete pavements has to meet special requirements. Besides cement properties which influence the fresh concrete, the cement is of great importance for the durability of concrete pavements. If the joints in the young concrete are not sawn early after paving, cracks can form in the pavement. With cracking-frame...

Spain can boast of having a very large concrete pavement area, amounting to more than 90 percent in over 35 civil airfields and 5 military air bases. Technical details, construction methods and performance of these pavements are analysed, together with their evolution in the latest projects which have started in...

In recent years several investigations were carried out in Germany aimed at reducing the tyre-road noise on concrete block pavements. The results show that these pavements can be constructed with a surface producing the same low traffic noise level as the reference asphalt road surface. In the paper, conclusions are...

Cement-bound road bases of 16 heavily loaded Autobahns in West Germany (12 road bases under concrete pavements and 4 under asphalt pavements) were investigated regarding bond, damage due to frost and erosion, compressive strength, water permeability, frost and erosion resistance. The investigations showed that cement-bound road bases are proved in...

A project for a building sliuuld include a forecast obout the longtime behaviour. With the cost benefit analysis the technical longtime behaviour can be expressed in figures. In the case of the road pavements these costs are costs for the government and for the road users. The estirlIdLiull can be...