Uniaxial Experimental Tests on Full-Scale Limestone Masonry Columns Confined with Glass and Basalt FRCM Systems
Publication: Journal of Composites for Construction
Volume 24, Issue 5
Abstract
A large number of masonry buildings have been designed to sustain gravity loads or with reference to obsolete seismic provisions. Columns are among the weakest elements, especially in historical buildings. Many experiments have been carried out over the last few decades to investigate the effectiveness of fiber-reinforced polymer (FRP) jackets for confinement. Owing to the poor chemical compatibility of FRPs with masonry substrates, a new technique based on the replacement of resin with an inorganic matrix [fabric-reinforced cementitious matrix (FRCM)] has been developed. There are very few reports available on tests conducted on FRCM-confined masonry columns, especially with reference to full-scale specimens. To fill this gap, uniaxial pure compression tests were carried out on seven full-scale limestone masonry columns. In particular, the investigation examined the effectiveness of FRCM systems based on the use of alkali-resistant glass- and basalt-fiber grids embedded in lime-based mortar. The use of an internal reinforcement provided by pultruded glass bars or helical stainless steel bars in a dry application is also analyzed.
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Acknowledgments
The study was developed as part of the activities of the PRIN 2017 SURMOUNT (Innovative Systems for the Upgrade of Masonry Structures and Nonstructural elements). This concerns industrial research and the development of technologies to improve sustainability and safety in historical districts. The tests were performed using materials distributed by Mapei S.p.A. (Milan, Italy).
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Journal of Composites for Construction
Volume 24 • Issue 5 • October 2020
Copyright
© 2020 American Society of Civil Engineers.
History
Received: Aug 15, 2019
Accepted: May 11, 2020
Published online: Jul 20, 2020
Published in print: Oct 1, 2020
Discussion open until: Dec 20, 2020
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