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On the Crack Opening in Textile Reinforced Concrete with Regard to Fibre Bridging



Title: On the Crack Opening in Textile Reinforced Concrete with Regard to Fibre Bridging
Author(s): D. Bayer, M. Richter
Paper category : conference
Book title: International RILEM Conference on Material Science
Editor(s): W. Brameshuber
Print-ISBN: 978-2-35158-106-3
e-ISBN: 978-2-35158-107-0
Publisher: RILEM Publications SARL
Publication year: 2010
Pages: 91 - 101
Total Pages: 11
Nb references: 10
Language: English


Abstract: The influence of fibres on the material behaviour of fibre reinforced composite is essential. Fibre bridging at matrix cracks has a significant influence on the crack growing and therewith on the macroscopic mechanical behaviour of the composite. The scope of this article is to present an approach for determining the influence of continuous fibres on the crack opening displacement in fibre reinforced concrete under mixed-mode loading conditions. This approach is based on the weight function method and the superposition principle and the fibres are regarded as non-smeared crack bridging stresses. For the calculation of bridging stresses, constant bond shear stress in the fibre-matrix interface is assumed. However, the bond can also be modelled using shear lag models, e.g. with analytically solvable multiple linear shear stress-slip relations. By superposing crack opening displacements caused by external loads and all bridging fibre stresses, the displacement functions of the crack faces are calculated.


Online publication: 2010-10-21
Publication type : full_text
Public price (Euros): 0.00