In-Plane Strengthening of Clay Brick and Block Masonry Walls Using Textile-Reinforced Mortar
Publication: Journal of Composites for Construction
Volume 22, Issue 5
Abstract
This study evaluates the use of a composite material composed of multiaxial hybrid glass-fibers and polypropylene fabric coated in a hydraulic lime-based mortar (referred to as textile-reinforced mortar) to improve the in-plane shear strength and displacement capacity of solid clay-brick and hollow clay-block masonry walls with the aim of defining a comprehensive test protocol. Design parameters of the adopted strengthening system are investigated, and both single-sided and double-sided configurations for application on wall surfaces are considered. The influence of the presence of an external thermal insulation layer on walls’ in-plane performance is also considered. The first stage characterizes the materials, their bonding properties, and the initial shear strength of the masonry bed-joints. The second stage investigates the in-plane behavior of strengthened masonry wall panels using diagonal compression testing. No premature debonding is observed, even with no mechanical anchorage between the masonry substrate and the strengthening layer. Out-of-plane deformation due to structural asymmetry is observed in the single-sided strengthening configuration.
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Acknowledgments
The authors wish to thank Röfix S.p.A. for financial support. The assistance of the technical staff at the University of Padova Construction Materials Lab and the technical advice during testing and data analysis provided by Dr. Massimo Dalla Benetta and Dr. Paolo Girardello are gratefully acknowledged.
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Published In
Journal of Composites for Construction
Volume 22 • Issue 5 • October 2018
Copyright
©2018 American Society of Civil Engineers.
History
Received: May 5, 2017
Accepted: Apr 3, 2018
Published online: Jul 3, 2018
Published in print: Oct 1, 2018
Discussion open until: Dec 3, 2018
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