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Retrofitting of masonry walls by using a mortar joint technique; experiments and numerical validation

Lookup NU author(s): Dr Vasilis SarhosisORCiD

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Abstract

This paper presents research on a conventional but practical retrofitting method for masonry walls along with the numerical modelling of it under in-plane lateral shear–compression loading. The latter is capable of predicting the experimental collapse load and overall behaviour quite accurately. The retrofitting approach is based on building a wall parallel to an existing single-leaf wall and bonding the two leaves together using a mortar (collar) joint, merging the two individual panels into a unified double-leaf wall. Experiments on this retrofitting approach for both undamaged and damaged masonry walls have been introduced in the present paper. The tests revealed that the pre-damage application can increase the strength by 50% while the post-damage one can restore the initial strength. A micro-scale numerical model has been devised by considering the bricks as rigid elements and the mortar joint as a nonlinear failure surface. The model was implemented in the commercial Finite Element (FE) software MIDAS FEA and the numerical results were verified against the available experimental data.

Publication metadata

Author(s): Wang C, Forth JP, Nikitas N, Sarhosis V

Publication type: Article

Publication status: Published

Journal: Engineering Structures

Year: 2016

Volume: 117

Pages: 58-70

Print publication date: 15/06/2016

Online publication date: 21/03/2016

Acceptance date: 01/03/2016

Date deposited: 30/03/2016

ISSN (print): 0141-0296

ISSN (electronic): 1873-7323

Publisher: Elsevier

URL: http://dx.doi.org/10.1016/j.engstruct.2016.03.001

DOI: 10.1016/j.engstruct.2016.03.001

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