Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Thin Sandwich Elements Prestressed with CFRP Tendons
Sandwich panels exhibit an attractive choice for modern building envelopes. Innovative high performance materials such as non-corrosive carbon reinforcement make it possible to produce elements with thin layers, which fulfil the requirements of sustainable and durable building envelopes. The application of two thin facings made of high performance concrete (HPC) and a core of polymeric rigid foam (PU) can highly enhance the load-bearing capacity of sandwich panels providing a low weight at the same time. In order to enable large façade elements or wide-span roof elements, an additional prestressing with CFRP (carbon fibre reinforced polymer) tendons is advantageous. These prestressed slender sandwich elements have a high potential for economic savings in terms of material and transport as well as reduced time efforts during mounting.
The paper reports on experimental investigations during the development of planar elements made of carbon reinforced HPC and pretensioned CFRP tendons. The determination of the transfer length of CFRP tendons in HPC is described and the results of bond tests on small-scale sandwich elements under tensile and shear loads are shown. Furthermore, the influence of textile connecting devices on the load-bearing capacity was determined. With the conducted experimental investigations, the high potential and performance of sandwich elements prestressed with CFRP and a PU core can be shown.
Thin Sandwich Elements Prestressed with CFRP Tendons
Sandwich panels exhibit an attractive choice for modern building envelopes. Innovative high performance materials such as non-corrosive carbon reinforcement make it possible to produce elements with thin layers, which fulfil the requirements of sustainable and durable building envelopes. The application of two thin facings made of high performance concrete (HPC) and a core of polymeric rigid foam (PU) can highly enhance the load-bearing capacity of sandwich panels providing a low weight at the same time. In order to enable large façade elements or wide-span roof elements, an additional prestressing with CFRP (carbon fibre reinforced polymer) tendons is advantageous. These prestressed slender sandwich elements have a high potential for economic savings in terms of material and transport as well as reduced time efforts during mounting.
The paper reports on experimental investigations during the development of planar elements made of carbon reinforced HPC and pretensioned CFRP tendons. The determination of the transfer length of CFRP tendons in HPC is described and the results of bond tests on small-scale sandwich elements under tensile and shear loads are shown. Furthermore, the influence of textile connecting devices on the load-bearing capacity was determined. With the conducted experimental investigations, the high potential and performance of sandwich elements prestressed with CFRP and a PU core can be shown.
Thin Sandwich Elements Prestressed with CFRP Tendons
Lecture Notes in Civil Engineering
Ilki, Alper (Herausgeber:in) / Ispir, Medine (Herausgeber:in) / Inci, Pinar (Herausgeber:in) / von der Christine, Ann-Heid (Autor:in) / Bosbach, Sven (Autor:in) / Stark, Alexander (Autor:in) / Schulze-Ardey, Jan Philip (Autor:in) / Hegger, Josef (Autor:in)
International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering ; 2021 ; Istanbul, Turkey
10th International Conference on FRP Composites in Civil Engineering ; Kapitel: 30 ; 351-362
27.11.2021
12 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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