Confinement of Masonry Columns with Natural Lime-Based Mortar Composite: An Experimental Investigation

Valerio Alecci, Mario De Stefano, Stefano Galassi, Raymundo Magos and Gianfranco Stipo
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Valerio Alecci: Department of Architecture, University of Florence, 50121 Florence, Italy
Mario De Stefano: Department of Architecture, University of Florence, 50121 Florence, Italy
Stefano Galassi: Department of Architecture, University of Florence, 50121 Florence, Italy
Raymundo Magos: School of Architecture, Anáhuac University, 77500 Cancun, Mexico
Gianfranco Stipo: Department of Architecture, University of Florence, 50121 Florence, Italy

Sustainability, 2021, vol. 13, issue 24, 1-16

Abstract: The paper presents the results of an experimental campaign on the confinement of masonry square columns with fiber-reinforced lime mortar (FRLM) composites made of a natural lime-based matrix. The experimental results show the effectiveness of such a composite for increasing both strength and ductility performances of strengthened columns. Predictive formulas from the literature and from the Italian guidelines CNR-DT 215/2018 do not perfectly fit the experimental outcomes and do not confirm the strength increase of the confined columns. The reason can be attributed to the very low mechanical properties of the natural matrix used to form such a composite. Therefore, considering that the use of a natural and sustainable matrix fully compatible with the masonry substrate is a fundamental requirement for strengthening masonry columns of buildings belonging to architectural heritage, an additional future effort should be made by researchers involved in this field. In particular, for a reliable prediction of the strength of masonry columns confined with composites made of natural matrices, wider experimental campaigns are necessary to refine available formulas with respect to different substrates and component materials.

Keywords: masonry columns; FRCM composites; confinement; experimental campaign; analytical predictions (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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