Shear strengthening of un-reinforced concrete masonry walls with fabric-reinforced-cementitious-matrix

Babaeidarabad, Saman; Arboleda, Diana; Loreto, Giovanni; Nanni, Antonio

doi:10.1016/j.conbuildmat.2014.04.116

Cited by 105 publications

(49 citation statements)

References 20 publications

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“…The contribution of the masonry wall can be obtained according to the methodology presented by Li et al [34], and applied to diagonal tensile tests by Babaeidarabad et al [35]. Four types of failure mechanisms can occur, and the shear capacity for each type can be computed through the following equations: -Shear capacity due to shear sliding failure, V ss , calculated according to Eq.…”

Section: Analytical Description Of the Experimental Resultsmentioning

confidence: 99%

Assessment of overlay masonry strengthening system under in-plane monotonic and cyclic loading using the diagonal tensile test

Almeida

Pereira

Barros

2015

Construction and Building Materials

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h i g h l i g h t sThe efficiency of FRCM overlays was assessed as part of a masonry strengthening system. The strength increment of masonry walls was quantified by diagonal tensile tests. Monotonic and cyclic in-plane loading was applied to evaluate the behaviour of the walls.The key failure modes obtained experimentally and the basic mechanisms were examined. Experimental results were discussed and compared to the analytical model predictions. a b s t r a c tThe development of novel strengthening techniques to address the seismic vulnerability of masonry elements is gradually leading to simpler, faster and more effective strengthening strategies. In particular, the use of fabric reinforced cementitious matrix systems is considered of great potential, given the increase of ductility achieved with simple and economic strengthening procedures. To assess the effectiveness of these strengthening systems, and considering that the seismic action is involved, one important component of the structural behaviour is the in-plane cyclic response. In this work is discussed the applicability of the diagonal tensile test for the assessment of the cyclic response of strengthened masonry. The results obtained allowed to assess the contribution of the strengthening system to the increase of the load carrying capacity of masonry elements, as well as to evaluate the damage evolution and the stiffness degradation mechanisms developing under cyclic loading.

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Section: Analytical Description Of the Experimental Resultsmentioning

confidence: 99%

Assessment of overlay masonry strengthening system under in-plane monotonic and cyclic loading using the diagonal tensile test

Almeida

Pereira

Barros

2015

Construction and Building Materials

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“…Studies and research results evidenced the good mechanical properties of FRCM/SRG strengthened masonry [4][5][6][7][8][9] and concrete structures [10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 94%

Analysis of the Behavior of FRCM Confined Clay Brick Masonry Columns

Ombres

Verre

2020

Fibers

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The behavior of FRCM (Fabric Reinforced Cementitious Mortar) confined clay brick masonry columns is analyzed in this paper. The results of an experimental investigation conducted on small-scale columns made by clay brick masonry confined with steel-FRCM (or Steel Reinforced Grout, SRG), PBO (poly-paraphenylene-benzo-bisoxazole) FRCM and basalt-FRCM, tested under monotonic compressive load, are described and discussed. Tests were conducted on thirteen prismatic columns; eleven columns (two unconfined and nine confined) were tested under concentric load while an eccentric load was applied on two confined columns. For each confinement system, the parameters investigated were the 'confinement ratio', the 'load eccentricity' and the 'overlap configuration of the fiber fabrics'. FRCM confinement improved the structural response of masonry columns in terms of ultimate strength, ultimate strain and ductility. Some models from the literature were also examined to evaluate their applicability in predicting the axial capacity of confined columns. axially loaded columns strength and ductility values are increasing with the confinement ratio while they are decreasing with the increase of the load eccentricity. In addition, a FEM procedure adopted to perform a numerical analysis furnished satisfactory predictions of the axial capacity of confined columns [23].An experimental and analytical study on masonry columns confined with carbon fiber fabrics in polymer-modified cement binder has been conducted by Krevaikas [16]. Short masonry columns have been tested under concentric loading varying the number of confining layers, the cross-section aspect ratio and the corner radii. Tests results have been used to develop simple models (both linear and nonlinear) for the prediction of the ultimate strength and strain of confined columns.The influence of different brick configurations on the behavior of PBO-FRCM confined brick masonry columns was investigated by Carloni et al. [20] through the results of tests conducted on full-scale and scaled bricks columns. The parameters investigated were also the role of the mortar joints and the arch effect across the section of the columns due to the confinement.Cascardi et al. [21] used three different inorganic matrices for confining poor quality masonry columns tested under axial load. The experimental results confirmed that the FRCM confinement may produce a significant improvement of the mechanical properties of the masonry columns when a proper grade of mortar matrix is used.The compressive behavior of calcarenite masonry columns confined with different FRCM systems was analyzed by Minafò and La Mendola [22]. The confinement system made with glass fiber fabric was changed on the basis of the mechanical properties of the mortar. The results of tests evidenced the role of the mortar grade on the strength, strain and ductility of confined columns. An analytical model, found based on an iterative procedure, was also proposed to predict the overall compressive behavior of FRCM confined masonry c...

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“…In the work of Babaeidarabad et al [13] concrete masonry un-reinforced walls (1220 mm × 1220 mm × 92 mm) were externally retrofitted on both sides with either 1-ply or 4-ply carbon-FRCM and subjected to diagonal compression (triplets of specimens per case plus a triplet of control walls). Walls were tested under load control in three cycles of loading and unloading, where the last cycle was continued till failure.…”

Section: Schub In Wandebenementioning

confidence: 99%

Increase of load‐carrying capacity of masonry with textile reinforced rendering / Erhöhung der Tragfähigkeit von Mauerwerk mit textilbewehrtem Putz

2015

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Shear strengthening of un-reinforced concrete masonry walls with fabric-reinforced-cementitious-matrix

Cited by 105 publications

References 20 publications

Assessment of overlay masonry strengthening system under in-plane monotonic and cyclic loading using the diagonal tensile test

Assessment of overlay masonry strengthening system under in-plane monotonic and cyclic loading using the diagonal tensile test

Analysis of the Behavior of FRCM Confined Clay Brick Masonry Columns

Increase of load‐carrying capacity of masonry with textile reinforced rendering / Erhöhung der Tragfähigkeit von Mauerwerk mit textilbewehrtem Putz

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