Christoph Gehlen

TL;DR: In this paper, the authors provide an overview of different particle-bed 3D printing techniques for the production of concrete elements, i.e., selective binder activation, selective paste intrusion and binder jetting.

TL;DR: In this article, a comprehensive list of possible local characteristics at the steel-concrete interface (SCI) and available information regarding their properties as well as their occurrence in engineering structures and in the laboratory is presented.

TL;DR: In this paper, the authors present R&D activities in the field of laser-induced breakdown spectroscopy for industrial applications and show novel LIBS systems running in routine operation for inline process control tasks.

TL;DR: In this article, the critical chloride content (Ccrit) of reinforcement corrosion in concrete has been reviewed and the authors conclude that the state-of-the-art on Ccrit has advanced negligibly over the last decades and the time is now to change the way corrosion initiation in concrete is scientifically addressed.