SHEAR STRENGTHENING OF PRESTRESSED CONCRETE BEAMS WITH TEXTILE REINFORCED CONCRETE

Author(s): Martin Herbrand
Book Title: FERRO-11 – 11th International Symposium on Ferrocement and 3rd ICTRC - International Conference on Textile Reinforced Concrete
Editor: Wolfgang Brameshuber
Print-ISBN: 978-2-35158-152-0
e-ISBN: 978-2-35158-153-7
Publisher: RILEM Publications SARL
Publication year: 2015
Pages: 465-472
Total Pages: 8
Language: English

Abstract: A large part of existing highway bridges in Germany exhibits calculative shear capacity deficits under static and cyclic loading. More structures are therefore expected to demand refurbishment and strengthening within the next years. Besides common strengthening methods, the use of textile reinforced concrete (TRC) offers an innovative alternative for strengthening measures by combining the advantages of lightweight glued CFRP-stripes and additional concrete layers. Two full scale tests on I-shaped prestressed concrete beams under cyclic shear loading were therefore carried out at the Institute of Structural Concrete at RWTH Aachen University. Previous tests on identical non-strengthened beams served as a reference for the tests on beams strengthened with TRC. These preliminary tests have shown that a considerable increase of the shear fatigue and static shear strength can be obtained by strengthening the web with TRC. By increasing the shear strength with TRC, the service life of deficient concrete bridges can thus be extended efficiently.

Online publication: 2015
Publication Type: full_text
Public price (Euros): 0.00