The photo shows a collection of microscopic images of crack surfaces of selected concrete laboratory specimens previously exposed to continuous water flow in a self-healing experiment. The crack surfaces are encrusted with CaCO3, which grew in bizarre shapes and structures and caused the autogenous self-healing of the cracks.” Contact person: Daniel Lahmann
August 2023
The photo shows an opened concrete specimen after it has been exposed to a continuous flow of water for about 2 months as a part of an autogenous self-healing test. The specimen was then opened, and the crack surface was sprayed with phenolphthalein indicator. Crack healing occurred through CaCO3 precipitation as can be seen from the non-pink colored areas. Nevertheless, exposed rebars exhibit extensive corrosion, highlighting the issues of cracking in reinforced concrete structures. Contact person: Daniel Lahmann
March 2023
Comparison of the new installed Structural Health Monitoring (SHM) at the bridge “Vahrendorfer Stadtweg” with the digital model for the planning of the installation (picture below). Contact persons: Martin Koehncke and Yogi Jaelani
January 2023
Comparison of Impact Echo testing results with numerical simulation results for a specimen with complex geometry. Geometry effects can be well reproduced by the simulations. Contact person: Fabian Dethof
