Direct links
- Civil Systems Engineering Group
- Employee
- DFG - SPP 1542 - TP 1
Optimal structures from functional graded concrete elements – design, computation and automated construction - DFG - SPP 1542 - TP 2
Efficient and automated manufacturing of multifunctional graded concrete components with mineralized hollow bodies - Baden-Württemberg Foundation - Sustainable construction with concrete
Multi-functional graded elements for the sustainable construction with concrete - Research Initiative "Zukunft Bau"
Development of an ecological and economical way of construction through usage of precast multifunctional wall elements from graded concrete - Innovative usage of ressources for SMBs
Integrale Planung und Herstellung von ressourceneffizienten Betonbauteilen aus mineralischer Faserverbundbewehrung und gradiertem Beton - DFG EXC 2120
Cyber-physical fabrication of functionally graded concrete (FGC) components for multi-storey buildings - IWB
Institute for Construction Materials - ILEK
Institute for Lightweight Structures and Conceptual Design
The gradation of concrete elements allows for an functional adaption of the inner structure and thereby, also of the elements properties regarding the static and structural-physical requirements. An automated way of construction is a key feature to enable reproducability for graded concrete elements. The entire process, starting from an optimization based element design, the subsequent mixture selection, dosage and conveyance, and finally the material application with or without formwork, needs to be covered by and integrated into a process control concept. This conceptual design and the implementation of an automated process chain in from of a prototypical test rig as well as the development of a suitable control concept are the key research features for the ISYS in this interdisciplinary research, which is pursued in collaboration with the Institute of Construction Materials (IWB) and the Institute for Lightweight Structures and Conceptual Design (ILEK).
Werner Sobek initiated the research on the graded concrete technology in 2011. Since then it has been continuously developed further in an interdisciplinary collaboration between the ILEK, ISYS and IWB at the University of Stuttgart. Within two research projects as part of the DFG priority program 1542 - Lightweight Construction with Concrete - ("Optimal structures from functional graded concrete elements – design, computation and automated construction" and "Efficient and automated manufacturing of multifunctional graded concrete components with mineralized hollow bodies") an automated process chain for the manufacturing of graded concrete elements with a concrete dry-spraying technique has been realized. This involves the targeted development of concrete mixtures with adaptable density, the element design with an optimized material placement, as well as an automated manufacturing process enabling an accurate positioning of the adaptable concrete mixtures.
In the current research ("Multi-functional graded elements for the sustainable construction with concrete" founded by the Baden-Württemberg Foundation) an alternative concrete process technology (wet-spraying) is investigated. At this, the technology of mineral hollow bodies shall be extended towards an automated manufacturing process. With these hollow bodies cavities can be placed even more effectively in unstressed areas of the concrete elements and therefore, improve the savings in resources without spoiling the recyclability. Within another research project ("Development of an ecological and economical way of construction through usage of precast multifunctional wall elements from graded concrete" founded by the Research Initiative "Zukunft Bau") the transferability of the concept towards wall construction elements shall be shown.
We would also like to gratefully thank our founders of our research projects and the supporters from the industry.
Impressions
Prototype of an automated manufacturing platform for functional graded concrete elements.
Parallel kinematics for a flexible nozzle orientation.
Conveyor units for the concrete dry- and wet-spraying technology.
Manufacturing of scaled test specimen 1,0 x 0,1 x 0,1 m (L/W/H)
Manufacturing of a scaled test specimen 1,0 x 1,0 x 0,1 m (L/W/H)
Manufacturing of a scaled test specimen 1,0 x 1,0 x 0,1 m (L/W/H)
Prototype for automated construction of hollow body elements from concrete through biaxial rotation.
Automated operation to manufacture a spherical hollow body from concrete.
Manufactured spherical hollow body from concrete and the employed formwork.
Funding and support
Funding of the project: Multi-functional graded elements for the sustainable construction with concrete
Image: (c) Baden-Württemberg Stiftung gGmbH
Funding of the project: Development of an ecological and economical way of construction through usage of precast multifunctional wall elements from graded concrete
Image: (c) Bundesinstitut für Bau-, Stadt- und Raumforschung (BBSR)
Funding of the projects: Optimal structures from functional graded concrete elements – design, computation and automated construction / Efficient and automated manufacturing of multifunctional graded concrete components with mineralized hollow bodies
Image: (c) Deutsche Forschungsgemeinschaft e.V.
Funding of the project: Cyber-physical fabrication of functionally graded concrete (FGC) components for multi-storey buildings
Image: (c) Deutsche Forschungsgemeinschaft e.V.
Funding of the project: Integrale Planung und Herstellung von ressourceneffizienten Betonbauteilen aus mineralischer Faserverbundbewehrung und gradiertem Beton
Image: (c) Ministerium für Wirtschaft, Arbeit und Wohnungsbau Baden-Württemberg
Support of the research in the fields of drive technology, sensor technology and automation engineering
Image: (c) Festo GmbH & Co. KG
Support of the research in the field of concrete process engineering
Image: (c) WERNER MADER GmbH Mörtel u. Betonspritzmaschinen
Support of the research in the field of large scale, heavy duty linear-motion systems
Image: (c) WINKEL GmbH
Support of the research in the field of pneumatic conveyor technique
Image: (c) KAESER KOMPRESSOREN SE
Support of the research in the fields of precast concrete elements and logistics
Image: (c) OTTO KNECHT GmbH & Co. KG
Contact
Benjamin Schönemann
M.Sc.Research Assistant