Meet the team

Biographie

Dr. Alexis Kalogeropoulos

Dr. Alexis Kalogeropoulos is a Founder and CEO at Bridgology. His vision is to keep bridges in the best conditions at the lowest cost possible by implementing so-called Predictive Maintenance. He’s a specialist in Ground Penetrating Radar applied to civil engineering.

In 2005, the first GPR applications were developed for an inspection of tunnels, utility detection and thickness calculations by Karakas & Français SA, however, further development became necessary. As a result, a collaboration of more than 7 years was established with Dr. Johannes Hugenschmidt HSR, which led to the publication of an article on the inspection of retaining walls with GPR; then in obtaining a research grant FNS for a doctorate on the determination of chloride and moisture content in concrete with GPR.

He obtained the Ph.D in 2012, it was held under the joint supervision of Dr. Johannes Hugenschmidt, then at EMPA. of Prof. Eugen Brühwiler EPFL, and of Prof. Jan Van der Kruk ETHZ then FZJ.

Besides Bridgology, he contributes his time to the scientific community as a reviewer for scientific journals like NDT&E International and Near Surface Geophysics. Frequently, he teaches at EPFL in introducing Masters to GPR, and providing digital signal processing teachings to Doctoral school.

Publications

• Non-Destructive Determination of Chloride and Water Content in Concrete Using Ground Penetrating Radar, TH5354 EPFL 2012
• Full-waveform GPR inversion to assess chloride gradients in concrete, NDT & E International. 57. 74–84. 10.1016.2013.
  Chlorides and moisture assessment in concrete by GPR full waveform inversion, Near Surface Geophysics., 2011, 9, 3, 277-285, EAGE
• Processing strategies for high-resolution GPR concrete inspections, NDT&E Int., 2010, 43, 4, 334-342, Elsevier
• The inspection of retaining walls using GPR, Journal of Applied Geophysics, 2009, 67, 4, 335-344, Elsevier
• Pilotstudie zur Evaluation einer mobilen Grossversuchsanlage für beschleunigte Verkehrslastsimulation auf Strassenbeläge, ASTRA 2004/018, Report Nr 1261, (2009)

Biographie

Dr. Christophe Loraux

Christophe Loraux has joined Bridgology since 2020 as a GPR data analyst and quickly become involved in the development of Bridgology’s in-house analysis software.

With his solid background in civil engineering, he integrated his vision and improved communication with Bridgology’s clients. A few months after he started working, he became skillful at unveiling the most complex and hidden features of existing concrete structures!

During his Bachelor and Master years at the Swiss Federal Institute of Technology in Lausanne, Christophe fell in love with the vast field of existing structures. It’s almost natural that he pursues his studies with a PhD thesis on novel material for the strengthening of concrete bridge decks and long term monitoring of structures.

Currently, Christophe is appointed as a Structural Engineer Consultant in Bridgology’s office – Stockholm. As Remote Working is one of the corporate culture strengths at Bridgogoly, he is able to keep a close cooperation with the Headquarter in Switzerland to solve clients’ problems not only in Sweden, but also from anywhere in the world.

Publications

• Long-term monitoring of existing wind turbine towers and fatigue performance of UHPFRC under compressive stresses, EPFL TH8404 – 2017.
• The use of long term monitoring data for the extension of the service duration of existing wind turbine support structures, Christophe Loraux, Eugen Brühwiler, Journal of Physics conference series 2016.
• A realistic examination of the fatigue life of a wind turbine tower using data from long term monitoring Christophe Loraux, Eugen Brühwiler, IABSE 2015.