Repair of A1 Steinhäusl–St. Christophen
|Company||ÖBA – Österreichische Betondecken Ausbau GmbH|
|Principal||ASFINAG Bau Management GmbH|
|Location||Purkersdorf - Austria|
|Type||Joint, repair and surface technology|
|Service duration||11.2016 - 09.2017|
High performance at night.
From November 2016 to September 2017, the concrete slabs of the A1 motorway were rebuilt. To be specific, the sections in the direction of Vienna between the Steinhäusl junction and the Altlengbach exit and in the direction of Linz between km 40.00 and km 44.00 were affected.
To impede traffic as little as possible, significant portions of the works were carried out during selective night-time closures. One construction stage took place behind a fixed construction site safety device.
Over the course of the repair work, 500 m3 of road surface concrete was used in exchanging the concrete panels and 7,500 kg of quick hardening restoration mortar were used, while joints with a total length of 10,000 running metres were restored. For quick project processing, rapid hardening concrete was used in the works.
The high time pressure during the night closures and the large transportation stretch for the special concrete constituted particular challenges in this project. There was also the customer’s request to work on two construction stages simultaneously. This allowed the construction time to be decreased by one third.
With the help of a striker roller, rapid hardening concrete was installed efficiently and precisely.© PORR
Dowels and anchors ensure lasting stability for the newly created concrete panel.© PORR
Shortly before hardening, the fresh concrete surface receives a brushed finish.© PORR
The renewed concrete panels are covered with a special thermal film to speed up the hardening of the material.© PORR
Finished preparation works of the concrete panels to be renovated.© PORR