Lightweight carbon-reinforced concrete hollow core slab with 3D carbon reinforcement
Source abstract
Abstract
In this study, lightweight precast hollow core slabs made of carbon-reinforced concrete were developed to enable highly slender cross-sections and significant reductions in concrete mass. The structural system combines conventional biaxial carbon grids with an innovative 3D textile reinforcement, designed to transfer both shear and tensile forces. To demonstrate technological readiness, two large-scale slab elements (5.4 m × 2.3 m) were investigated in 4-point-bending tests. An extensive measurement program – including distributed fiber optic sensors (DFOS) and digital image correlation (DIC) – provided detailed insights into both material-level and global structural behavior. The slabs significantly exceeded the required ultimate limit state (ULS) load levels, while deformations and crack widths remained within acceptable limits under service loads throughout the tests. These results confirm the structural efficiency and applicability of carbon-reinforced hollow core slabs for lightweight, prefabricated construction.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Masonry and Concrete Structural Analysis · Structural Behavior of Reinforced Concrete · Innovative concrete reinforcement materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (40)
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1. Bundesinstitut für Bau-, Stadt- und Raumforschung (BBSR), Umweltfußabdruck von Gebäuden in Deutschland - Kurzstudie zu sektorübergreifenden Wirkungen des Handlungsfelds Errichtung und Nutzung von Hochbauten auf Klima und Umwelt, 2020. Accessed: Jun. 26 2025. [Online]. Available: https://www.bbsr.bund.de/BBSR/DE/veroeffentlichungen/bbsr-online/2020/bbsr-online-17-2020.html##, ISSN: 1868-0097.
2. Bundesministerium für Umwelt, Naturschutz, Bau und Reaktorsicherheit, Klimaschutzplan 2050 – Klimaschutzpolitische Grundsätze und Ziele der Bundesregierung. [Online]. Available: https://www.bmwk.de/Redaktion/DE/Publikationen/Industrie/klimaschutzplan-2050.pdf.
3. Flachdecken in Elementbauweise mit Gitterträgern10.1002/best.201400072 ↗
4. DIN EN 1168:2011-12, Betonfertigteile_- Hohlplatten; Deutsche Fassung EN_1168:2005+A3:2011, DIN EN 1168, DIN EN 1168, Berlin, Dec. 2011.
5. W. Siegler, Plafond en ciment armé sans enduit, FR365548A.
6. Numerical web-shear strength assessment of precast prestressed hollow core slab units10.1016/j.engstruct.2015.08.013 ↗
7. Failure modes and shear design of prestressed hollow core slabs made of fiber-reinforced concrete10.1016/j.compositesb.2012.06.005 ↗
8. Investigating the effect of bending on the seismic performance of hollow-core flooring10.1186/s40069-023-00580-w ↗
9. Critical modelling criteria for precast pre-stressed hollow-core slabs
10. Schürmann · 2007
11. Curbach · 2023
12. Lightweight ceiling system made of carbon reinforced concrete10.1002/suco.201700224 ↗
13. Flexural behaviour of filigree slab elements made of carbon reinforced UHPC10.1016/j.conbuildmat.2018.12.027 ↗
14. Dünnwandige Fertigteile aus vorgespanntem Carbonbeton10.1002/best.202100019 ↗
15. Digitally fabricated ribbed concrete floor slabs: a sustainable solution for construction10.21809/rilemtechlett.2022.161 ↗
16. Digital prefabrication of lightweight building elements for circular economy: material-minimised ribbed floor slabs made of extruded carbon reinforced concrete (ExCRC)10.3390/buildings13122928 ↗
17. Multimodal automated fabrication with concrete: case study and structural performance of ribbed CFRP-reinforced concrete ceilings
18. N. Ur Rehman, H. Michler, M. Stümpel, B. Beckmann, P. Penzel, L. Hahn, C. Cherif, and S. Marx, 2023, Development of carbon-reinforced hollow core slab, In: Proceedings of 11th International Conference on Fiber-Reinforced Polymer (FRP) Composites in Civil Engineering (CICE 2023), D.C. Cardoso, K.A. Harries, and F.A. Silva, Eds., Rio de Janeiro, Brasil, pp. 1800–1808, 24.-26. July 2023, doi: 10.5281/zenodo.8116760.
19. Parking slabs made of carbon reinforced concrete10.1002/suco.201700147 ↗
20. Experimental investigation and analytical modelling of shear strength of thin walled textile-reinforced UHPC beams10.1016/j.engstruct.2020.111735 ↗
21. Investigations on the deflection of carbon-reinforced concrete hollow-core slabs10.3390/ma18061212 ↗
22. Statisch-konstruktive Durchbildung des Gebäudeteils BOX – Herausforderung aus planerischer Sicht10.1002/best.202200126 ↗
23. Übersicht über die im CUBE verwendeten Materialien10.1002/best.202200125 ↗
24. N. Ur Rehman, H. Michler, B. Beckmann, and S. Marx, Lightweight hollow core beams reinforced with 3D carbon reinforcement, In: Proceedings of the 20th fib Symposium Proceedings in Christchurch - (2024), New Zealand, Christchurch, New Zealand, 2024, pp. 1403–1412. [Online]. Available: https://www.scopus.com/record/display.uri?eid=2-s2.0-85216926305&origin=inward&txGid=f1bd948f86b3925827038b12197e0c09.
25. L. Zierul, Nazaib Ur Rehman, Tilo Senckpiel-Peters, Birgit BeckmannPlanning carbon-reinforced concrete components – innovations from theory to practice, In: Proceedings of DFH Symposium 2024..
26. Prüfung von Festbeton - Teil 6: Spaltzugfestigkeit von Probekörpern; Deutsche Fassung EN 12390-6:2023, DIN EN 12390-6:2024-05, DIN EN 12390-6:2024-05, Berlin, May. 2024.
27. P. Penzel, YueZheng Wen, Lore Zierul, Johannes Mersch, Harald Michler, Nazaib Ur Rehmann, Birgit Beckmann, Viviane Adams, Thea Lautenschlaeger, Christoph Neinhuis, Steffen Marx, and Chokri Cherif, High-Performance and material-saving CRC-Slab Systems on basis of branched reinforcement layout, biologically inspired design and robot-based automatic yarn deposition, in Proceedings of AUTEX 2025.10.1007/978-3-032-21483-6_19 ↗
28. Experimental investigation of beams reinforced with carbon 2D-Netzgitterträger reinforcement10.3390/buildings13102552 ↗
29. DAfStb-Richtlinie Betonbauteile mit nichtmetallischer Bewehrung: 2024-01, Deutscher Ausschuss für Stahlbeton (DAfStb), Berlin, Germany, Jan. 2024.
30. Development and testing of fast curing, mineral-impregnated carbon fiber (MCF) reinforcements based on metakaolin-made geopolymers10.1016/j.cemconcomp.2020.103898 ↗
31. The recycling of carbon components and the reuse of carbon fibers for concrete reinforcements10.3390/app13127091 ↗
32. Deutsches Institut für Normung; DIN EN 1990:2021-10, Eurocode: Grundlagen der Tragwerksplanung; Deutsche Fassung EN 1990:2002 + A1:2005 + A1:2005/AC:2010, DIN EN 1990, DIN EN 1990:2021-10, Berlin, Oct. 2021.
33. Deutsches Institut für Bautechnik DIBt, Z-31.10-182; CARBOrefit - Verfahren zur Verstärkung von Stahlbeton mit Carbonbeton: Allgemeine bauaufsichtliche Zulassung/Allgemeine Bauartgenehmigung, Berlin, 2023.
34. Zur Bewertung des Belastungsgrades biegebeanspruchter Stahlbetonkonstruktionen anhand von Last-Verformungs-Informationen
35. Deutsches Institut für Normung; DIN EN 1992-1-1:2011-01, Eurocode 2: Bemessung und Konstruktion von Stahlbeton- und Spannbetontragwerken - Teil 1-1: Allgemeine Bemessungsregeln und Regeln für den Hochbau; Deutsche Fassung EN 1992-1-1:2004 + AC:2010, DIN EN 1992-1-1, DIN EN 1992-1-1, Berlin, Jan. 2011.
36. Experimental study on crack width of HRB600 grade high-strength steel bar reinforced concrete beams10.3390/buildings14010010 ↗
37. Application of fiber optic measurement in textile-reinforced concrete testing10.1002/suco.202100252 ↗
38. Crack monitoring on concrete structures with distributed fiber optic sensors – Toward automated data evaluation and assessment10.1002/suco.202300100 ↗
39. Advances in data pre-processing methods for distributed fiber optic strain sensing10.3390/s24237454 ↗
40. The cracking and tensile-load-bearing behaviour of concrete reinforced with sanded carbon grids10.3390/buildings13102652 ↗