Experimental study on seismic behavior of Un-Reinforced Masonry (URM) brick walls strengthened with shotcrete

Shabdin, M.; Attari, Nader K. A.; Zargaran, Mojdeh

doi:10.1007/s10518-018-0340-x

Cited by 31 publications

(17 citation statements)

References 7 publications

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“…A third solution is based on the use of shotcrete. In this case, higher diameter grids (6 to 13 mm) are used, and the concrete is projected on the grid [20]. A different solution based on the aforementioned techniques is the Cam System.…”

Section: Introductionmentioning

confidence: 99%

Optimal seismic retrofitting techniques for URM school buildings located in the southwestern Iberian peninsula

et al. 2019

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This paper aims to study different seismic retrofitting techniques to test the reduction of the seismic vulnerability of unreinforced masonry buildings. Three techniques have been considered in a case study: adding steel or carbon fibre reinforced polymer grids in the walls and steel encirclements in the openings. The performance-based method has been used to that purpose. Nonlinear static analyses have been performed to obtain the capacity and fragility curves, the performance point and the damage level states. Moreover, an analysis of the cost-benefit ratio has been carried out. Results have shown that the three techniques have produced considerable improvements. The addition of encirclements has reduced the deformation resulting in a slight increase of the structure’s stiffness. Adding steel grids has produced the maximum peak strength increase while adding polymer grids has produced the largest ultimate displacements. Adding encirclement has had the best cost-benefit ratio.

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Section: Introductionmentioning

confidence: 99%

Optimal seismic retrofitting techniques for URM school buildings located in the southwestern Iberian peninsula

et al. 2019

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“…Shotcrete is a technique in which concrete, or mortar, is directly sprayed on the structure to enhance its strength capacity (Warnar, 1996). In addition, it helps dissipate seismic energy, as stated by (Shabdin et al, 2018). A good example for masonry application of shotcrete is reported by (Elgawady et al, 2006) that have retrofitted both sides of a masonry wall using shotcrete process as presented in Fig.…”

Section: Shotcrete Sprayedmentioning

confidence: 92%

“…Shotcrete reinforcements usually are mesh and bars (Shabdin et al, 2018). Actually, also filler or binding materials like hemp fibers (Yun et al, 2019) and SilicaFume (Army, 1993) can be used in the shotcrete spraying mixture.…”

Section: Shotcrete Sprayedmentioning

confidence: 99%

Seismic and Thermal Retrofitting of Masonry Buildings with Fiber Reinforced Composite Systems: A State of the Art Review

Majumder¹,

Stochino²,

Martinelli³

2021

International Journal of Structural Glass and Advanced Material

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Old masonry buildings represent the largest part of traditional constructions. Generally, they are both seismically vulnerable and thermally dispersive. Therefore, the need for seismic and thermal retrofitting aimed at reducing their vulnerability and environmental impact has motivated research efforts towards sustainable retrofitting solutions. This study presents a literature review of the approaches currently available for masonry retrofitting. Specifically, it highlights the use of fiber in textile form i.e., Textile Reinforcement Mortar (TRM), as Fiber Reinforced Polymer (FRP) and natural fibers (animal and plant sources) to masonry retrofitting. In addition, specific attention is devoted to the integrated (structural and thermal) fiber-based integrated retrofitting techniques that are becoming very important in the last years.

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“…As shown in Figure 13, doublewythe and Perforated bricks reinforced walls in this system are in good agreement with other reinforced systems. In walls with aspect ratios of 1 and 2, Zhang et al [32], Shabdin et al [33], Sandoval et al [34], and Farooq et al [35] showed a lower carrying capacity and displacement than double-wythe and perforated reinforced walls. Slender walls with an aspect ratio of (h=l = 2) had a better condition than this system, perhaps due to the location of steel bars in the wall.…”

Section: Comparison With Other Reinforced Systemsmentioning

confidence: 98%

Numerical Modeling of a New Reinforced Masonry System Subjected to in-Plan Cyclic Loading

2019

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This paper describes the behavior of walls under in-plane cyclic shear compression of a new reinforced masonry system composed of horizontal and vertical reinforcements based on Iran's national building regulation codes in two groups. In the rst group, grid-type steel bars were mounted on the cement core between solid clay bricks (double-wythe); in the second group, common grid-type steel bars were mounted on perforated bricks and trusses as horizontal reinforcements using advanced numerical simulation (LS-DYNA). A nonlinear nite element discrete modeling according to stressstrain models was applied to represent the previously modeled masonry walls. Masonry units included perforated bricks and solid clay bricks, and the mortar and bonding interfaces were shown as continuum elements. In order to validate the micro-modeling strategy, the input data were based on a reinforced masonry wall previously tested in the laboratory with clear identi cation and justi cation. Accordingly, the main objective of this paper is to (a) examine results of specimens in terms of maximum strength, ductility, energy absorption, and failure modes, (b) investigate the e ect of aspect ratio and reinforcement type, and (c) compare the modeled walls with other reinforced systems.

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Experimental study on seismic behavior of Un-Reinforced Masonry (URM) brick walls strengthened with shotcrete

Cited by 31 publications

References 7 publications

Optimal seismic retrofitting techniques for URM school buildings located in the southwestern Iberian peninsula

Optimal seismic retrofitting techniques for URM school buildings located in the southwestern Iberian peninsula

Seismic and Thermal Retrofitting of Masonry Buildings with Fiber Reinforced Composite Systems: A State of the Art Review

Numerical Modeling of a New Reinforced Masonry System Subjected to in-Plan Cyclic Loading

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