In-Plane Shear Behavior of Stone Masonry Panels Strengthened through Grout Injection and Fiber Reinforced Cementitious Matrices

Ferretti, Francesca; Incerti, Andrea; Tilocca, Anna Rosa; Mazzotti, Claudio

doi:10.1080/15583058.2019.1675803

Cited by 20 publications

(17 citation statements)

References 41 publications

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“…Much research has been carried out in recent years to analyze the effect of TRM strengthening in these conditions, and several valuable studies have been reported in the literature. These have been carried out on both stone or masonry [15][16][17][18][19][20][21][22] and brick walls [18,[23][24][25][26][27][28][29][30][31], which had undergone diagonal compression testing, usually in accordance with the procedures of ASTM E519/E519M − 21 [32] or RILEM LUM B6 [33]. In some instances, research included even in situ tests of historical and heritage buildings [34].…”

Section: Introductionmentioning

confidence: 99%

Shear strengthening of masonry walls with Textile Reinforced Mortars (TRM) under high temperature exposure

Estevan

Torres

Varona

et al. 2023

Journal of Building Engineering

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Section: Introductionmentioning

confidence: 99%

Shear strengthening of masonry walls with Textile Reinforced Mortars (TRM) under high temperature exposure

Estevan

Torres

Varona

et al. 2023

Journal of Building Engineering

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“…The use of these materials has progressively increased due to their effectiveness in improving both the in-plane and the out-of-plane behavior of masonry panels, as many research works demonstrated [8][9][10][11][12][13][14][15][16]. FRCMstrengthened masonry walls, indeed, are typically characterized by an increased load-bearing capacity and by a less fragile cracked behavior, with respect to unreinforced masonry elements [17][18][19]. At the structural system scale, the adoption of a variety of materials was investigated [20] and, more recently, the use of natural fibers has gained attention [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Effect of temperature variations on the bond behavior of FRCM applied to masonry

2022

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In the last decades, Fiber Reinforced Cementitious Matrix (FRCM) composites were successfully introduced to repair and strengthen existing masonry structures. The good mechanical performances of these materials determined their efficiency as a strengthening technique; however, their durability is still an open issue. As a matter of fact, FRCM composites may be exposed to a combination of different environmental conditions and, additionally, to temperature variations due to solar radiation. The objective of this research was to study the effects of temperature variations on the bond behavior of a FRCM composite, constituted by a basalt grid and a lime-based mortar matrix, applied to masonry. For this purpose, an experimental investigation on thermally conditioned FRCM-strengthened masonry wallets is presented, in which 14 single-lap shear tests were performed. Before testing, samples were exposed to different target temperatures inside a climatic chamber: 32, 40, 50, 60 and 80 °C. Thermocouples were embedded within the FRCM reinforcing layers at two different depths to detect the inner temperature profiles and to control the conditioning process. The single-lap shear tests were then carried out inside the same climatic chamber, while maintaining the target temperature constant. A decrease in terms of peak-axial stress was observed by increasing temperature, along with a progressive change in the failure mode, from fiber rupture outside the bonded area to fiber slippage within the mortar matrix layers.

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“…There are several experimental studies about the effectiveness of FRCM reinforcements applied to masonry walls (Prota et al 2006;Faella et al 2010;Balsamo et al 2011;Parisi et al 2013;Balsamo and Iovinella 2014;Corradi et al 2014;Babaeidarabad et al 2014;Menna et al 2015;Mustafaraj and Yardim 2016;Yardim and Lalaj 2016;Mininno et al 2017;de Carvalho Bello et al 2017;Lignola et al 2017;de Felice et al 2018;Giaretton et al 2018;Incerti et al 2019a, b;Bellini et al 2019b;Del Zoppo et al 2019a;Ferretti et al 2019b;De Santis et al 2019;Türkmen et al 2020). As a general outcome, the FRCM reinforcements appeared to be very effective in improving the shear behavior of the masonry walls, both in terms of ultimate load and failure mode.…”

Section: Introductionmentioning

confidence: 99%

A discrete-cracking numerical model for the in-plane behavior of FRCM strengthened masonry panels

Murgo

Ferretti

Mazzotti

2021

Bull Earthquake Eng

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In this paper, the structural behavior of masonry panels strengthened with a system made up of composite fiber grids embedded in a cementitious matrix (FRCM) is presented. The non-linear behavior of the unreinforced and reinforced panels is numerically simulated by means of a simplified micro-modelling approach. This approach concentrates all the non-linearities and failures in the joints and in potential crack surfaces within the bricks, placed vertically in the middle of each brick. The FRCM strengthening system is discretized by a continuous bi-directional fiber grid constituted by trusses embedded into a cementitious matrix. A calibrated bond-slip relationship is applied between the fibers and the mortar matrix assuming an idealized bilinear law. The typical experimental load–displacement curve for a FRCM strengthened panel shows three principal phases that correspond to different failure mechanisms: masonry cracking, mortar matrix cracking and ultimate failure of the panel. The non-linear numerical analyses show a good agreement with experimental results and the modeling approach is found to be adequate to reproduce the described experimental behavior. The results of a parametric study on both the material and the geometrical properties of the FRCM system are also presented.

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In-Plane Shear Behavior of Stone Masonry Panels Strengthened through Grout Injection and Fiber Reinforced Cementitious Matrices

Cited by 20 publications

References 41 publications

Shear strengthening of masonry walls with Textile Reinforced Mortars (TRM) under high temperature exposure

Shear strengthening of masonry walls with Textile Reinforced Mortars (TRM) under high temperature exposure

Effect of temperature variations on the bond behavior of FRCM applied to masonry

A discrete-cracking numerical model for the in-plane behavior of FRCM strengthened masonry panels

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