As part of the HochQuer project funded by the DBU Deutsche Bundesstiftung Umwelt, we are currently carrying out component tests on slabs with truncated cone-shaped void formers together with our partner Unidome Group.
Previous numerical investigations have shown that high volume displacement and high shear load-bearing capacity can be achieved in reinforced concrete slabs with alternating truncated cone-shaped void formers.
For the component tests we use extensive measurement techniques including modern and proven measuring methods to precisely analyze component behaviour:
- Inductive displacement transducers for deformation measurements and manual crack detection.
- Digital image correlation for surface strain measurement and precise tracking of surface deformations.
- Acoustic emission measurements that allow conclusions to be drawn about structural changes inside the component.
The tests are carried out on test specimens made of normal concrete and recycled concrete in order to promote the application of sustainable material concepts in the construction industry.
We are particularly grateful for the interdisciplinary collaboration with Inka Mueller's working group from the Department of Mechatronics and Mechanical Engineering, which is supporting us with the acoustic measurements. With these tests, we want to optimize existing approaches and develop solutions for resource-saving and sustainable construction methods.
