2022
Despite its critical impact on the environment, reinforced concrete is currently one of the most important and widely used building materials in the construction industry. The bond between concrete and reinforcing steel is essential for its load-bearing capacity in existing and future construction projects. With increasing demands on sustainability, there is growing interest in conversions, refurbishments and subsequent reinforcements of existing structures. Here, ever-evolving or even new processes and building materials are used in order to meet the given requirements in the best possible way from an ecological but also economic point of view. The combination of materials that have already been studied numerous times, partly unknown materials in existing buildings and new processes as well as new building materials gives rise to intensive research.
Past international conferences, such as those in Paisley (1982), Riga (1992), Budapest (2002) or Brescia (2012), offer the opportunity for an international exchange of research results, discussions and inspiration for the future. The series of this conference, which recurs every 10 years, "Bond in Concrete-Bond, Anchorage, Detailing" now continued for the fifth time in Stuttgart in July 2022.
Prof. Spyridis and Mr Walter were able to present and discuss their research results with the titles "Steel fibre reinforcement influence on the breakout resistance of anchors in normal strength concrete" (Mellios, Nikolaos; Hufelschulte, Franziska; Spyridis, Panagiotis) and "Confined pull-out tests of bonded anchors in steel fibre reinforced concrete - preliminary studies" (Walter, Lars; Spyridis, Panagiotis). Mr. Bessling from the Chair of Construction Materials at TU Dortmund University presented his results entitled "Textile reinforced concrete - analysis of cracking along the textile strand in concrete" (Bessling, Markus; Orlowsky, Jeanette). In addition, knowledge was gained from further, numerous and interesting lectures and fringe discussions, and international contacts with other researchers and industry representatives were expanded and established.
From our point of view, the three-day conference was a complete success, for which we thank the organisers as well as the other participants and look forward to the next professional event. The conference was organised by the University of Stuttgart - Institute for Materials in Construction and supported by fib, RILEM, ACI.
2022
In this contribution, robustness concepts for avoiding accidental and/or extraordinary impacts on structures are presented. These should not lead to disproportionate consequences for constructions and their surroundings during the planned technical lifetime. In addition to a description of the most important definitions and the current state of knowledge on the robustness of statically and seismically loaded structures, an articulated robustness assessment process using so-called key performance indicators is recommended in order to prioritize vulnerable locations and to determine appropriate preventive measures.
Beton Kalender is a solid working basis and up-to-date, reliable reference book for the design and calculation of concrete structures. This year's topics are repair and load tests of concrete structures as well as digitalization in construction.
The details of the contribution are:
Strauss, A., Pürgstaller, A., Pampanin, S., Spyridis, P., Bergmeister, K. Robustheit von Ingenieurstrukturen. In: Beton Kalender 2022: Nachhaltigkeit, Digitalisierung, Instandhaltung
Link to the publication: https://www.ernst-und-sohn.de/en/beton-kalender-2022
10.01.2022
The end of 2021 and the wake of 2022 were marked by the approval and publication of two high-ranking publications with co-authorship from our team.
The first publication was authored by Nikos Mellios and Panos Spyridis together with Tyler Oesch of BASE (the Federal Office for the Safety of Nuclear Waste Management in Berlin). It deals with the non-linear finite element modelling of Ultra High Strength, Steel Fibre Reinforced Concrete, with a strength of more than 200 MPa. In particular the reported model manages to capture the damage propagation and fibre orientation influence in tested concrete specimens, which were recorded with the aid of X-Ray computer tomography.
The second publication was written in collaboration of Prof. Spyridis with Tyler Oesch, as well as Prof. Sabine Kruschwitz, Dr. Frank Mielentz, and Dr. Dietmar Meinel of the TU Berlin, and the Federal Institute for Materials Research and Testing (BAM). This publication presents a comparison of different non-destructive methods that can be used to identify the prevailing orientation of fibres in hardened concrete and consequently the mechanical characteristics of material under different stress directions.
As the publication costs were covered by Project DEAL and the Institutional Open Access Program (IOAP), both publications can be viewed and downloaded free of charge at the following links:
https://link.springer.com/article/10.1617/s11527-021-01833-4
https://www.mdpi.com/2076-3417/12/2/697/htm
We hope you’ll enjoy reading and please send us your feedback!
22.11.2021
Prof. Panos Spyridis has coordinated and leads the expert task group on the use and design of connections and fastenings in tunnels under the umbrella of the activities of The International Federation for Structural Concrete (fib).
The fib, Fédération internationale du béton, is a not-for-profit association formed by approximately 1000 corporate and individual members in 104 countries. Its mission is to develop the study of scientific and practical matters toward the technical, economic, aesthetic and environmental advancement of concrete construction.
We are excited for our participations in this prestigious and high-impact international activity and wish all the best to this newly established committee!
The financial support of this activity by the Society of the Friends of the TU Dortmund (GdF) is gratefully acknowledged.
04.10.2021
We are very happy to welcome Mr. Alhussain Yousef as an employee of our university chair!
Mr. Yousef has started work at our chair on October 1st. Before this, he completed his Civil engineering Master Studies at the TU Dortmund, and finishing his master's thesis under the supervision of Prof. Spyridis with an excellent grade.
17.09.2020
Der Webauftritt des Lehrstuhls für Befestigungs- und Montagetechnik wurde im Hinblick auf das Behindertengleichstellungsgesetz (BGG) optimiert und angepasst, um Interessenten allgemein barrierefreie Inhalte zur Verfügung zu stellen. Eine explizite Erklärung zur Barrierefreiheit finden Sie unter folgendem Link. -> Link (englische Version)
16.09.2020
Aktuell wird dringend ein neuer Mitarbeiter für die Anwendungstechnik Befestigungstechnik bei unserem Partner MKT gesucht.
Stellenausschreibung und weitere Informationen finden Sie im folgenden Dokument. -> pdf (Stellenanzeige)