An improved damage model to predict the failure process in FRP/concrete assemblies

Author(s): K. Benzarti, G. Ruocci, P. Argoul, F. Freddi
Paper category: Conference
Book title: Concrete Repair, Rehabilitation and Retrofitting III (ICCRRR)
Editor(s): M.G. Alexander, H.-D. Beushausen, F. Dehn, P. Moyo
Print ISBN: 978-0-415-89952-9
Publisher: Taylor & Francis Group
Pages: 455- 457
Total Pages: 3
Language: English

An improved damage model is implemented for simulating the debonding behaviour of FRP/concrete assemblies and its evolution during hydrothermal ageing. This model has been developed within the framework of the principle of virtual powers and the bonded assembly is modelled as a “threedomain system” with concrete, glue and FRP laminate assumed as damageable materials, those domains being connected by two separate interfaces. An interaction between damage in the domains and damage along the interfaces is also introduced. This model was implemented in a Finite Element (FE) code, which made it possible to simulate the fracture behaviour of CFRP strengthened specimens tested in a single lap shear test configuration. Effects of hydrothermal ageing on the fracture behaviour were analysed by varying the properties of the adhesive layer in the modelling. Comparison between simulations and experimental tests showed the accuracy of the damage model prediction and its capability to distinguish between various failure mechanisms.

Online publication: 2014
Publication Type: abstract_only
Public price (Euros): 0.00