Direct Shear Bond Tests of Fabric-Reinforced Cementitious Matrix Materials
Publication: Journal of Composites for Construction
Volume 24, Issue 1
Abstract
Fabric-reinforced cementitious matrix (FRCM) composites consist of a dry fiber fabric embedded in an inorganic mortar that may be enriched with short fibers. These composites are particularly well-suited for the strengthening of historical buildings due to their high compatibility with the substrate, vapor permeability, and durability. One of the most critical factors influencing the effectiveness of a composite applied externally to masonry or concrete structures is debonding of the system from the substrate. In FRCM systems, the failure is often localized at the mortar–fabric interface. This paper presents a summary of experimental investigations of the bond properties of six different FRCM systems in various configurations of bond length and substrate material. Finally, some considerations and indications for inclusion of the test procedure in guidelines and acceptance criteria are presented.
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Acknowledgments
The authors gratefully acknowledge the National Science Foundation (NSF) for the support provided to the Industry/University Center for Integration of Composites into Infrastructure (CICI) under Grant No. IIP-1439543 and its industrial members. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the NSF. Part of the analyses were developed within the activities of Rete dei Laboratori Universitari di Ingegneria Sismica (ReLUIS) for the research program funded by the Dipartimento di Protezione Civile–Progetto Esecutivo 2014. Part of the experimental tests were performed at the Laboratorio Prove Materiali of the Politecnico di Milano, and their support is gratefully acknowledged.
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Published In
Journal of Composites for Construction
Volume 24 • Issue 1 • February 2020
Copyright
©2019 American Society of Civil Engineers.
History
Received: Jan 4, 2019
Accepted: Jun 5, 2019
Published online: Dec 7, 2019
Published in print: Feb 1, 2020
Discussion open until: May 7, 2020
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