Bewehrung

Rittner, Steffen; Schladitz, Frank; Schütze, Elisabeth

doi:10.1002/9783433608661.ch2

Cited by 2 publications

(4 citation statements)

References 23 publications

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“…As a consequence, the yarns are not adequately stretched in the transverse direction, resulting in uneven mechanical properties. This irregularity has an adverse effect on the reinforcing capabilities, in this case, particularly in the transverse direction [15].…”

Section: Uniaxial Tensile Tests Carbon Rovingsmentioning

confidence: 94%

“…After comprehensive investigations and analyses of various fiber materials, such as AR glass, basalt, and carbon, the latter was determined as the most suitable material due to its favorable mechanical [15,[32][33][34][35] and durability properties [36,37]. Particularly, the Young's modulus is several times (approx.…”

Section: Fiber Materialsmentioning

confidence: 99%

“…Different impregnation materials lead to differences in the mechanical properties and draping capabilities of the textile reinforcements [42][43][44]. The range extends from relatively flexible reinforcements that are available in rolls to rigid grids and molded products [15]. All impregnation materials presented in Table 1 demonstrate high durability properties [45][46][47][48].…”

Section: Impregnationmentioning

confidence: 99%

“…Although it is possible to create such multi-plies with several layers and varying orientations, this production method is in general complex to adapt and is particularly suitable when large quantities of standardized reinforcement have to be produced. For this reason, these reinforcements have a predefined shape, material combination and reinforcement quantity [15]. However, it is important to note that the referenced reinforcement products do not cover externally bonded non-metallic reinforcements, which share a similar application field.…”

Section: Introductionmentioning

confidence: 99%

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Embroidered Carbon Reinforcement for Concrete

Konzilia,

Wachter,

Egger

et al. 2023

Buildings

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This research focuses on the manufacturing process and mechanical properties of textile reinforcements fabricated using embroidery technology. The study investigates both 2D and 3D reinforcement products and compares the advantages and possibilities of embroidery technology with other manufacturing methods. A series of tests using carbon reinforcement is conducted, and the results are presented and evaluated comprehensively. The uniaxial tensile tests reveal the characteristic behavior of carbon-reinforced concrete (CRC). Furthermore, the bonding behavior between the concrete matrix and embroidered carbon reinforcement is analyzed utilizing asymmetric pull-out tests, demonstrating that the embroidered reinforcements provide a sufficient bond. In addition to conventional 2D reinforcements, 3D reinforcements were also investigated, which can be efficiently manufactured using the TFP (tailored fiber placement) technology. Through the implementation of stirrup rovings, shear failure loads can be increased significantly. The results suggest that the mechanical properties of the reinforcement are influenced by the manufacturing process, which is particularly evident in the variation between longitudinal and transverse directions. The research highlights the potential benefits of using embroidery technology for textile reinforcement and indicates areas for further research and optimization in the manufacturing process. A pilot project that utilizes the embroidered reinforcement is currently under construction.

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Section: Uniaxial Tensile Tests Carbon Rovingsmentioning

confidence: 94%

Section: Fiber Materialsmentioning

confidence: 99%

Section: Impregnationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Embroidered Carbon Reinforcement for Concrete

Konzilia,

Wachter,

Egger

et al. 2023

Buildings

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73 Meter lange integrale Holz‐Carbonbeton‐Verbundbrücke

Frede,

Krämer,

Rempel

et al. 2024

Beton und Stahlbetonbau

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Der Bau der „Brücke über den Seeblickweg“ zeichnet sich aus durch die Verwendung innovativer Bauweisen und unkonventioneller Materialien. Die zweifeldrige Fuß‐ und Radwegbrücke vereint einen Holz‐Beton‐Verbundquerschnitt in den Feldbereichen mit einem Carbonbetonplattenbalken im Stützbereich und an den Widerlagern. Durch den Einsatz der nichtmetallischen Bewehrung kann die Betondeckung reduziert und auf eine zusätzliche Schutzschicht verzichtet werden. Im vorliegenden Aufsatz werden die carbonbetontechnologischen Details aufgezeigt. Die Bemessung erfolgte anhand der mittlerweile bauaufsichtlich eingeführten Richtlinie „Betonbauteile mit nichtmetallischer Bewehrung“. Im Bauteilbiegeversuch wurden Rissbreiten gemessen und daraus die zulässigen Spannungen der Carbonlängsbewehrung ermittelt. Diese wurde für ein verbessertes Verbundverhalten besandet. Die Querkraftbewehrung kombiniert Steckbügel aus Carbon sowie Stäbe aus glasfaserverstärktem Kunststoff. Die Herausforderungen im Umgang mit den innovativen Baustoffen bei der Herstellung der Brücke werden beschrieben sowie erste Ergebnisse aus einem Rissmonitoring mittels faseroptischer Messstränge vorgestellt.

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Bewehrung

Cited by 2 publications

References 23 publications

Embroidered Carbon Reinforcement for Concrete

Embroidered Carbon Reinforcement for Concrete

73 Meter lange integrale Holz‐Carbonbeton‐Verbundbrücke

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