motorway

/motorway

Reference
World Premier: Rapid-hardening concrete with a paver on the A2 at Feldkirchen 2015, Graz/AT (632)

2019-06-14T09:53:32+01:00

Initial situation On the A2 in Austria at Feldkirchen (Graz/AT) a 50m stretch of the right-hand lane had to be repaired. To minimise disruption of traffic on this important stretch the lane could only be closed at night. Solution and assessment For this project the rapid-hardening concrete Concretum® Q-FLASH 2/20 was used. It reaches a compressive strength of approximately  20 N/mm2 just 2 hours after the start of mixing. As the open time and consistency were adapted to the basic conditions (temperature, approach access, time and type of pouring) it was possible to lay the rapid-hardening concrete with a slipform [...]

Reference
Repair of expressway S1 2015, Vienna (632)

2019-06-14T09:53:32+01:00

Initial situation There was evidence of damage to concrete slabs on expressway S1 near Vienna (e.g. cracks and broken edges) requiring repair. To minimise traffic disruption due to repairs, the works were carried out at night using rapid-hardening concrete. Solution and assessment The rapid-hardening concrete Concretum® Q-FLASH 2/20 was used for this project. It reaches a compressive strength of over 20 N/mm2just 2 hours after the start of mixing. This enabled the construction work to be completed within this very limited time frame. The concrete was produced in a nearby concrete plant and then transported to the site with a [...]

Reference
Construction of a HGV lane on the A71 at Sömmerda 2015, Erfurt (772)

2019-06-14T09:53:33+01:00

Initial situation Motorways and airports now carry extremely high volumes of traffic. This means there is an increasing number of transport surfaces to be repaired. Repair processes must be selected to keep closure periods of transport surfaces to a minimum. The rapid-hardening concrete Concretum® Q-FLASH 2/20 has already been used at various airports and motorways, however the installation process was restricted by the manual installation process. Thus, the testing and verification of machine-based pouring processes was a matter of prime interest. Solution and assessment The motorway station on the A71 at Sömmerda had to be constructed as quickly as [...]

Reference
Reconstruction of the concrete slabs on the A93 motorway, Regensburg (DE), 2014 (836)

2019-06-14T09:53:33+01:00

  Initial situation Germany has an extensive motorway network with a large proportion of concrete roads. Some sections are affected by very high traffic volumes, which leads to heavy annual wear of the concrete slabs and to edge breakages. In addition, blow-ups occur, which can form in summer in some sections. The resulting damaged areas have to be repaired in order to prevent further damage and to guarantee safety on the motorway. The closure periods here have to be kept as short as possible in order to minimise traffic disruption. This requires the concrete being used to harden extremely [...]

Reference
Reconstruction of motorways in Greater Salzburg/AT (632)

2019-06-14T09:53:34+01:00

    Initial situation Austria has an extensive motorway network that largely consists of concrete road surfaces. In many sections the traffic volume is high even outside rush hour, so closing individual lanes can lead to traffic disruption. For this reason, the reconstruction work is often undertaken in short closures at night or between rush hours. On some sections of the road, there is damage due to edge breakages that need to be repaired. Typically, the individual damaged areas are small and are spread over wide stretches. The marginal conditions make it impossible for the concrete to be transported [...]

Reference
Reconstruction of A1 in Lower Austria/AT (607)

2019-06-14T09:53:34+01:00

Initial situation Austria has an extensive motorway network that largely consists of concrete road surfaces. In many sections the traffic volume is high even outside rush hour, so closing individual lanes can lead to traffic jams. For this reason, necessary reconstruction work is often undertaken in short closures at night or between rush hours. Concrete plants are only rarely directly next to the sections being repaired, which can result in transport times of up to 60 minutes. As the fields to be reached by a mixer truck may also be up to one kilometre apart, open times of up [...]