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Textilbetonverstärkte Stahlbetonstützen


Medium: journal article
Language(s): de 
Published in: Beton- und Stahlbetonbau, , n. 9, v. 106
Page(s): 640-648
DOI: 10.1002/best.201100017

TRC strengthened RC Columns

After research on differently shaped column heads has shown the considerable strengthening effect of textile reinforced concrete (TRC), we aimed to verify the validation of the developed calculation models in large scale tests. The model, which was developed on the basis of plain concrete columns in small scale experiments, was therefore enhanced. How accurate the predictions of the model for reinforced large scale columns were was examined by large scale testings at three reinforced concrete columns with round cross sections. The bearing capacity of the TRC strengthened columns increased considerably in comparison with the reference's. The achieved ultimate loads had been estimated very well by the developed confinement model. Besides an increase of the ultimate load the textile reinforcement also led to a considerably improved prior warning behaviour. During the load increase fine and later well visible and, homogeneously distributed cracks occurred. All in all we have reached a high ductility of the reinforced columns.

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