Characterisation and Modelling of Thin-Walled, Carbon Reinforced Concrete Membranes under Multi-Axial Stress Conditions

Composites with non-metallic reinforcements are characterized by high compressive and tensile strength and have high potential for use in thin-walled structures such as double-curved shell structures or webs of beams. However, the load-bearing mechanisms of carbon reinforced concrete under membrane stress states have not yet been sufficiently investigated and it is not clear whether strut-and-tie models and compression field theories developed for membrane stress states in steel reinforced concrete can be transferred to carbon reinforced concrete.

Within the project, a new method for characterization of carbon reinforced concrete membranes under multi-axial stress conditions will be developed, which allows a detailed investigation of all mechanisms involved in load transfer. Novel experimental setups eliminate the deficits of known test methods and allow for reliable and reproducible characterization of all constitutive laws. Based on the results, a new compression field theory will be developed which allows us to predict the structural response of carbon reinforced concrete membranes.

Associated with the project C02 is the supplementary project C02*: Systematic investigations on the interaction of shear force bearing components in shear force models.

the picture shows a hyperbololic paraboloid shell made of carbon reinforced concrete as supporting structure of a pavilion at the RWTH Aachen University — Hyperbololic paraboloid shell made of carbon reinforced concrete as supporting structure of a pavilion at the RWTH Aachen University

Scientists

Subproject Manager

Josef Hegger

Univ.-Prof. em. Dr.-Ing. Dr.-Ing. E. h.

RWTH Aachen University, Institute of Structural Concrete

Mies-van-der-Rohe-Str. 1
D-52074 Aachen

Phone: +49 241 80 25170

hegger@imb.rwth-aachen.de

Institute website

Subproject Manager

Martin Claßen

Prof. Dr.-Ing.

RWTH Aachen University, Institute of Structural Concrete

Mies-van-der-Rohe-Str. 1
D-52074 Aachen

Phone: +49 241 80 25170

mclassen@imb.rwth-aachen.de

Institute website

Research Associate

Sven Bosbach

M.Sc.

RWTH Aachen University, Institute of Structural Concrete

Mies-van-der-Rohe-Str. 1
D-52074 Aachen

Phone: +49 241 80 28059

sbosbach@imb.rwth-aachen.de

Institute website

Cooperations

SP C01

Internal Shells

SP C04

Stability and Quasi-Ductility

SP E

Sustainability assessment

Publikationen | Publications

Backes, J. G.; Schmidt, L.; Bielak, J.; Del Rosario, P.; Traverso, M.; Claßen, M. (2023) Comparative Cradle-to-Grave Carbon Footprint of a CFRP-Grid Reinforced Concrete Façade Panel in Sustainability 15, 11548 – DOI: 10.3390/su151511548

Becks, H.; Bielak, J.; Camps, B.; Hegger, J. (2021) Application of fiber optic measurement in textile-reinforced concrete testing in: Structural Concrete 23, p. 2600–2614 – DOI: 10.1002/suco.202100252

Bosbach, S.; Hegger, J.; Claßen, M. (2023) Untersuchungen zur Dübelwirkung in Carbonbetonbauteilen in: Claßen, M.; Hegger, J.; Matschei, T.; Raupach, M. [eds.] Beiträge zur 10. DAfStb-Jahrestagung mit 62. Forschungskolloquium, 26./27.09.2023 in Aachen, p. 119–130 – DOI: 10.18154/RWTH-2023-08021

Bosbach, S.; Schmidt, M.; Claßen, M.; Hegger, J. (2022) Investigations on dowel action in carbon reinforced concrete in: Stokkeland, S.; Braarud, H. C. [eds.] Concrete Innovation for Sustainability – Proc. for the 6th fib International Congress 2022, 12.–16.06.2022 in Oslo (Norway), Oslo: Novus Press, p. 1809–1819.

Bosbach, S.; Schmidt, M.; Becks, H.; Claßen, M.; Hegger, J. (2022) Investigations on shear transfer by aggregate interlock with a unique test setup (TorAx) in: Zingoni, A. [ed.] Current Perspectives and New Directions in Mechanics, Modelling and Design of Structural Systems – Proceedings of The 8^th International Conference on Structural Engineering, Mechanics and Computation, London: CRC Press, p. 1265–1270.

Kalthoff, M.; Bosbach, S.; Backes, J.; Morales Cruz, C.; Traverso, M.; Claßen, M.; Raupach, M.; Matschei, T. (2023) Fabrication of lightweight, carbon textile reinforced concrete components with internally nested lattice structure using 2-layer extrusion by LabMorTex in: Construction and Building Materials 395, 132334 – DOI: 10.1016/j.conbuildmat.2023.132334

Kalthoff, M.; Bosbach, S.; Matschei, T.; Raupach, M.; Claßen, M.; Hegger, J. (2022) Investigations on material-minimized slabs made of extruded carbon reinforced concrete in: Stokkeland, S.; Braarud, H. C. [eds.] Concrete Innovation for Sustainability – Proc. for the 6^th fib International Congress 2022, 12.–16.06.2022 in Oslo (Norway), Oslo: Novus Press, p. 1047–1057.

Liebold, F.; Bergmann, S.; Bosbach, S.; Adam, V.; Marx, S.; Claßen, M.; Hegger, J.; Maas, H.-G. (2023) Photogrammetric Image Sequence Analysis for Deformation Measurement and Crack Detection Applied to a Shear Test on a Carbon Reinforced Concrete Member in: Ilki, A.; Çavunt, D.; Çavunt, Y. S. [eds.] Building for the Future: Durable, Sustainable, Resilient – Proc. of fib Symposium 2023, 05.–07.06.2023 in Istanbul (Turkey), publ. in: Lecture Notes in Civil Engineering 350, Cham: Springer, p. 1273–1282 – DOI: 10.1007/978-3-031-32511-3_130

Studentische Arbeiten in Förderphase 1

Nashef, M. (2021) Untersuchungen zur Druck-Zug-Festigkeit von Carbonbeton [Bachelorarbeit].

Bachem, J. (2022) Untersuchungen zum Compression Softening in Carbonbeton [Bachelorarbeit].

Gerst, L. (2022) Untersuchungen zum Einfluss einer Querzugbelastung auf die Druckfestigkeit von Carbonbeton [Bachelorarbeit].

Gümüskaya, B. (2022) Experimentelle und numerische Untersuchungen zur Herstellung von extrudierten carbonbewehrten aufgelösten Deckenelementen[Masterarbeit]. (mit D02).

Löb, M. (2022) Untersuchungen zur Rissreibung mit einer neuartigen kombinierten Torsions- und Axialkraftprüfmaschine[Masterarbeit].

Mayer, M. (2022) Entwicklung eines Druckfeldmodells für Bauteile mit Querkraftbewehrung [Masterarbeit].

Singraven, J. (2022) Untersuchungen zur Druck-Zug-Festigkeit von gerissenen Carbonbetonmembranen[Masterarbeit].

Stöhr, B. (2022) Untersuchungen zur Dübelwirkung in querkraftbewehrten Carbonbetonbauteilen[Masterarbeit].

Bouafi, S. (2023) Untersuchungen zum Einfluss einer Querzugbelastung auf die Druckfestigkeit von Carbonbeton[Bachelorarbeit].

Brahimi, F. (2023) Experimentelle Untersuchungen zum Materialverhalten einer modifizierten Carbonbewehrung[Bachelorarbeit]. (mit | with B03).

Rosenkranz, M. (2023) Experimentelle Untersuchungen zur Dübelwirkung der Längsbewehrung in Carbonbetonbauteilen[Bachelorarbeit].

Spangemacher, P. (2023) Experimentelle Untersuchungen zur Dübelwirkung in querkraftbewehrten Carbonbetonbauteilen[Bachelorarbeit].

Thoeren, T. (2023) Untersuchungen zum Einfluss schiefwinkliger Bewehrung auf die Druckfestigkeit von Carbonbeton unter gleichzeitig wirkendem Querzug[Bachelorarbeit].