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Fibers 2016, 4(2), 15; doi:10.3390/fib4020015

Strengthening of Masonry Columns with BFRCM or with Steel Wires: An Experimental Study

1
Facoltà di Ingegneria e Architettura, University of Enna “Kore”, 94100 Enna, Italy
2
Dipartimento di Ingegneria Civile, Ambientale, Aerospaziale, dei Materiali (DICAM), University of Palermo, 90128 Palermo, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Luciano Ombres
Received: 15 December 2015 / Accepted: 29 April 2016 / Published: 10 May 2016
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Abstract

Nowadays, innovative materials are more frequently adopted for strengthening historical constructions and masonry structures. The target of these techniques is to improve the structural efficiency with retrofitting methods while having a reduced aesthetical impact. In particular, the use of basalt fiber together with a cementitious matrix emerges as a new technique. This kind of fiber is obtained by basalt rock without other components, and consequently it could be considered a natural material, compatible with masonry. Another innovative technique for strengthening masonry columns consists of applying steel wires in the correspondence of mortar joints. Both techniques have been recently proposed and some aspects of their structural performances are still open. This paper presents the results of an experimental study on the compressive behavior of clay brick masonry columns reinforced either with Basalt Fiber–Reinforced Cementitious Matrix (BFRCM) or with steel wire collaring. Uniaxial compressive tests were performed on eight retrofitted columns and four control specimens until failure. Two masonry grades were considered by varying the mix used for the mortar. Results are presented and discussed in terms of axial stress-strain curves, failure modes and crack patterns of tested specimens. Comparisons with unreinforced columns show the capability of these techniques in increasing ductility with limited strength enhancements. View Full-Text
Keywords: basalt fibers; steel wires; compression; confinement; experimental investigation basalt fibers; steel wires; compression; confinement; experimental investigation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Fossetti, M.; Minafò, G. Strengthening of Masonry Columns with BFRCM or with Steel Wires: An Experimental Study. Fibers 2016, 4, 15.

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