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HomeKey Engineering MaterialsKey Engineering Materials Vol. 624A Study of the Fracture Process at the FRP-Masonry...

A Study of the Fracture Process at the FRP-Masonry Interface: The Role of the Periodic Pattern of Bricks and Mortar Joints

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Abstract:

This paper sheds light into the effect of the periodic pattern of bricks and mortar joints on the load-carrying capacity of the interface between fiber-reinforced polymer (FRP) composites and masonry. Two simplified cohesive material laws are proposed for the FRP-mortar and FRP-brick interfaces, which allow for the computation in closed form of a finite effective bond length L_eff of the interfaces. The aforementioned simplified interfacial laws are employed to compute the load response of the FRP-masonry interface, and to obtain the interfacial shear stress, the FRP axial strain, and the slip profiles along the bonded length. The results indicate that length of the stress-transfer zone (L_STZ) of the FRP-masonry interface varies periodically as its location shifts with respect to the position of the mortar joints. Furthermore L_STZ can be different from the effective length of the FRP-brick interface and is influenced by the size of the bricks and mortar joints.

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Periodical:

Key Engineering Materials (Volume 624)

Pages:

611-618

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.624.611

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Online since:

September 2014

Authors:

Francesco Focacci, Christian Carloni*

Keywords:

Debonding, DIC, FRP, Masonry, Mortar Joints, Transfer Length

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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