Maintenance for a longer service life

[Translate to English:] Exkursion mit Studenten

As part of the VO “Maintenance and retrofitting of concrete structures”, students were able to experience the refurbishment of the bridge “Prater-Hochstraße” as a section of the A23 south-east bypass Vienna up close last Wednesday (07.05.2025). 

On site, ASFINAG and PORR Group provided exciting insights into the extensive measures: Over a total length of more than 600 meters, the road surface as well as the bridge waterproofing in the edge areas will be renewed as part of the renovation. In addition, the steel restraint system including noise protection panels (known as the “Wiener Stahlleitwand”) will be repaired. The planning was carried out by FCP Fritsch, Chiari & Partner ZT GmbH. 

Students were able to see the casting of the first and second layer of bituminous waterproofing, removal of corrosion on the outside of the steel parts using a sandblasting process and the removal of damaged concrete parts using a high-pressure water jet. 

Many thanks to ASFINAG and PORR Group for the excellent organization and guidance! This excursion was a valuable opportunity for all students to gain practical experience and to see the importance of maintenance of existing bridge infrastructure.

About us

Structural concrete plays a pivotal role in modern society, serving as a fundamental material for over a century in the construction and development of urban infrastructure. Our research group is doing cutting-edge research on existing and newly built structures to transform reinforced concrete from the dull mass material it is used to be to an ingenious construction method that efficiently harnesses emerging technologies, prolongs the service life and makes sustainable use of our natural resources. One core focus of the group activities revolves around the digital fabrication of concrete structures from file to factory using advanced analytical methods and robotic tools. The group is also at the forefront of research when it comes to textile-reinforced structures. Through the exploitation of tailored yarn placement, the boundaries of traditional reinforcement concepts are leveraged for the creation of bespoke structures that are inspired by nature. A further key area of research is the development of innovative bridge and tunnel construction methods. The research group also operates a state-of-the-art laboratory in which the developed models, structural elements and construction methods can be tested for their applicability.

Group Picture of the institute

Group photo of the Research Unit Structural Concrete 2024 © Photographer Christian Husar