TU Dresden RWTH Leibniz Institut

Subproject D02

Principles for the Extrusion of Carbon Reinforced Concrete Structures

The aim of subproject D02 is the investigation of a material-saving and economic production process for thin, reinforced structures with variable concrete cross sections, which are characterized by simple to strongly curved and complex geometries. Therefore the continuous production with an extruder and a subsequent forming of these structures is focused. Extrusion has the technological and economic potential to produce complex components with high precision and quality without time-consuming and cost-intensive formwork and reinforcement processes.

Not only does rapid production significantly increase cost-effectiveness, it also counteracts the scarcity of raw materials through waste minimization and material-saving component geometries. The integration of technical textiles made of carbon in the extrusion process further increases the load-bearing capacity of the component.

Within the framework of D02, the seed fund project "Targeted CO2 impact of extruded concrete components" (1st round 2022) is being carried out.

the photo shows various extruded concrete geometries
Extruded concrete elements with different geometries
© Matthias Kalthoff, RWTH Aachen

Scientists

Subproject Manager
Michael Raupach
Prof. Dr.-Ing.
RWTH Aachen University, Institute of Building Materials Research
Schinkelstr. 3
D-52062 Aachen
Phone: +49 241 80 95104

Institute website

[Translate to English:] Thomas Matschei
Subproject Manager
Thomas Matschei
Prof. Dr.-Ing.
RWTH Aachen University, Institute of Building Materials Research
Schinkelstr. 3
D-52062 Aachen
Phone: +49 241 80 95103

Institute website

Cooperations

SP B02
Inline Consolidation
SP D01
3D Printing of Carbon Concrete
SP E
Sustainability assessment

Publikationen

Kalthoff, M.; Raupach, M.; Matschei, T. Investigation of Rheological Test Methods for the Suitability of Mortars for Manufacturing of Textile-Reinforced Concrete Using a Laboratory Mortar Extruder (LabMorTex). Constr. Mater. 2022, 2, 217-233.https://doi.org/10.3390/constrmater2040015

Scheurer, M.; Kalthoff, M.; Matschei, T.; Raupach, M.; Gries, T. (2022) Analysis of Curing and Mechanical Performance of Pre-Impregnated Carbon Fibers Cured within Concrete. Textiles 2022, 2, 657-672.https://doi.org/10.3390/textiles2040038

Kalthoff, M.; Bosbach, S.; Matschei, T.; Raupach, M.; Claßen, M.; Hegger, J.: (2022) Investigations on material-minimized slabs made of extruded carbon reinforced concrete, Proceedings, pp. 1047-1057, 6th fib Congress Oslo Norway June 2022

Kalthoff, M.; Raupach, M.; Matschei, T. (2022) Extrusion and Subsequent Transformation of Textile-Reinforced Mortar Components—Requirements on the Textile, Mortar and Process Parameters with a Laboratory Mortar Extruder (LabMorTex) in Buildings 12, 726 – https://doi.org/10.3390/buildings12060726

Kalthoff, M.; Raupach, M.; Matschei, T. (2022) Investigation into the Integration of Impregnated Glass and Carbon Textiles in a Laboratory Mortar Extruder (LabMorTex) in Materials 14, 7406, S: 217–233 – https://doi.org/10.3390/ma14237406

Kalthoff, M.; Raupach, M.; Matschei, T. (2022) Materialminimiertes Bauen mit extrudiertem Textilbeton in Beton 72, Issue 6, S. 195–198