A new method of seismic strengthening stone masonry with CRM coatings on one side

Gattesco, Natalino; Rizzi, Emanuele; Boem, Ingrid; Dudine, Allen; Gams, Matija

doi:10.1016/j.conbuildmat.2023.133565

Construction and Building Materials

2023

DOI: 10.1016/j.conbuildmat.2023.133565

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A new method of seismic strengthening stone masonry with CRM coatings on one side

Natalino Gattesco,

Emanuele Rizzi,

Ingrid Boem

et al.

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2024

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Cited by 4 publications

References 19 publications

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Experimental study on the seismic enhancement of brick masonry spandrels using a single-sided composite reinforced mortar coating

Gams,

Boem,

Gattesco

et al. 2024

Bull Earthquake Eng

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The paper reports on four cyclic tests of brick masonry spandrels in reference state and strengthened state. The tests were carried out on full-scale, H-shaped masonry panels to investigate the coupling role of the spandrel in connecting two piers in a historical masonry wall subjected to in-plane lateral actions. Two 250-mm-thick solid-brick masonry samples were tested—one single-leaf, the other two-leaves masonry. Both samples were tested before and after strengthening by applying a Composite Reinforced Mortar (CRM) coating on one surface. The CRM coating consisted of a lime mortar coating (nominal thickness = 30 mm), reinforced with mesh made of Glass Fibre-Reinforced Polymer (GFRP) that was anchored to the wall by GFRP transverse connectors. For the double-leaf masonry, there were additional transverse connectors made of steel bars in concrete cores (artificial diatones) to prevent masonry leaves separation and to improve the bonding of the CRM coating to the masonry. The test responses are compared in terms of crack pattern, failure mode, resistance, displacement and energy dissipation capacity. The tests showed the effectiveness of the proposed CRM system, which increased the spandrel resistance by 33% and 125% in the single—and double-leaf masonry, respectively, with the ultimate drift being 3.2% (one order of magnitude greater than for the unstrengthened reference samples). Data on energy dissipation and the equivalent viscous damping are also collected and compared. Importantly, the presence of the reinforcing mesh and the composite action of the coating and the wall changed the damage evolution and response mechanism, which resulted in a much better seismic response.

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Experimental study on the seismic enhancement of brick masonry spandrels using a single-sided composite reinforced mortar coating

Gams,

Boem,

Gattesco

et al. 2024

Bull Earthquake Eng

View full text Add to dashboard Cite

show abstract

A study of the seismic resistance performance of strengthened masonry walls using polypropylene mesh-composite on the surface

Tian,

Yang,

Cao

et al. 2024

Structures

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Shear performance of brick masonry retrofitted by high-strength fibrous cement mortar

Liu,

Hu,

Jin

et al. 2024

Journal of Building Engineering

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A new method of seismic strengthening stone masonry with CRM coatings on one side

Cited by 4 publications

References 19 publications

Experimental study on the seismic enhancement of brick masonry spandrels using a single-sided composite reinforced mortar coating

Experimental study on the seismic enhancement of brick masonry spandrels using a single-sided composite reinforced mortar coating

A study of the seismic resistance performance of strengthened masonry walls using polypropylene mesh-composite on the surface

Shear performance of brick masonry retrofitted by high-strength fibrous cement mortar

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