Externally bonded grids as strengthening and seismic retrofitting materials of masonry panels

Papanicolaou, Catherine; Triantafillou, Thanasis; Lekka, Maria

doi:10.1016/j.conbuildmat.2010.07.018

Cited by 231 publications

(117 citation statements)

References 4 publications

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“…This situation led to the proposal of several alternatives. The most significant ones are the Engineering Cementitious Concrete (ECC) presented by Maalej et al [2] who strengthened masonry panels against out-of-plane loads with promising results (blast protection) and the Textile Reinforced Mortar (TRM) initially developed for strengthening concrete structures (see [3,4]) but successfully adapted for its application on masonry (see [5,6]). Nowadays, TRM is the most studied strengthening solution for masonry but as the application technique is by hand and is time-consuming, the system needs to be improved in order to become a competitive alternative.…”

Section: Introductionmentioning

confidence: 99%

“…Nowadays, TRM is the most studied strengthening solution for masonry but as the application technique is by hand and is time-consuming, the system needs to be improved in order to become a competitive alternative. It has to be highlighted that TRM has been deeply analysed as a strengthening solution: Ortlepp et al [7] presented a methodology for the mechanical characterisation of TRM, Harajli et al [8] showed its performance against cyclic bending loads and Papanicolau et al [6] compared the TRM system with the FRP solution. For all these cases the application of TRM was by hand.…”

Section: Introductionmentioning

confidence: 99%

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Experimental assessment of Textile Reinforced Sprayed Mortar strengthening system for brickwork wallettes

Bernat-Masó

Escrig

Aranha

et al. 2014

Construction and Building Materials

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This work explores the feasibility of strengthening masonry with Textile Reinforced Mortar (TRM) by projecting it to save application time. Nineteen tests on masonry samples strengthened with TRM have been carried out to assess this new application method. Different mortars and fibre grids were considered for studying their influence and applicability with this new technique. Three points bending tests have been performed on the specimens to compare the flexural strength between cases with manually applied mortar (TRM) and sprayed application (TRSM) of the mortar layer. It was noticed that the strengthening mortar has a significant influence on the failure mode. Results show a remarkable (between 2 and 6 times more) productivity increase when using TRSM and a load-bearing capacity rise for the cases with larger grid spacing and projectable mortar when using TRSM instead of TRM. Greater ductility values were also observed for the TRSM cases in comparison with the analogue TRM cases (same grid and mortar).

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental assessment of Textile Reinforced Sprayed Mortar strengthening system for brickwork wallettes

Bernat-Masó

Escrig

Aranha

et al. 2014

Construction and Building Materials

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“…The in-plane behavior of URM walls retrofitted by near-surface-mounted FRP or twisted steel bars is also addressed by a number of researchers [17][18]. Some researchers have used fabric-reinforced-cementitious-matrix, polymer textile reinforced mortar (TRM) overlay or polymeric net reinforced cementitious matrix for in-plane strengthening of URM walls [19][20][21][22][23][24][25]. Some other types of retrofitting techniques are using pre-tensioned stainless steel ribbons [26], steel strips [27] and high strength steels chords [28].…”

Section: Introductionmentioning

confidence: 99%

Application of Ordinary Fiber-Reinforced Concrete Layer for In-plane Retrofitting of Unreinforced Masonry Walls: Test and Modeling

et al. 2018

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The masonry walls should have sufficient in-plane strength and stiffness to withstand the seismic loads during strong ground shakings. Different retrofitting techniques are proposed for improving in-plane behavior of the Unreinforced Masonry (URM) walls. This study focuses on experimental evaluation and numerical simulation of a simple practical retrofitting technique employing Fiber Reinforced Concrete (FRC) surface layer. The simple FRC mix has conventional available fiber, low fiber content, ordinary mix design and applicable construction procedure. Effect of FRC mix including fiber type and fiber content and surface layer thickness on in-plane behavior of masonry panels made up of conventional solid clay bricks are evaluated through experimental study in accordance with ASTM E-519 diagonal tension strength of masonry panels. In addition, numerical simulation model of this retrofitting technique in ABAQUS software is proposed and validated with test results of bare and retrofitted panels.

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“…For example, lime-based matrixes are normally suitable for historic masonry and cement-based ones are more proper for contemporary masonry. Because of this physical compatibility, several authors [3][4][5] present the TRM as an appropriate strengthening solution for masonry structures. The advantages of TRM in front of other possible strengthening solutions based on organic matrixes (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…The corresponding tests were focused on analysing the structural response against in-plane loads [3,4] or out-of-plane cyclic loads [9]. However, in non-seismic areas the horizontal in-plane loading conditions might be not critical.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of the load-bearing capacity of brick masonry walls strengthened with textile reinforced mortar and subjected to eccentric compressive loading

Bernat-Masó

Roca

2015

Engineering Structures

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A numerical model has been implemented to simulate brick masonry walls strengthened with Textile Reinforced Mortar (TRM) and subjected to second order bending effects in order to cover the limited research in this area. Simulations have been compared with experimental cases and applied to enhance the knowledge about the influence of different strengthening variables. The model is accurate at predicting the load-bearing capacity of the walls, which might be increased by strengthening both sides. Moreover, the TRM is more effective for the most slender cases and the numerical results suggest future improvements to reproduce the wall's stiffness.

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Externally bonded grids as strengthening and seismic retrofitting materials of masonry panels

Cited by 231 publications

References 4 publications

Experimental assessment of Textile Reinforced Sprayed Mortar strengthening system for brickwork wallettes

Experimental assessment of Textile Reinforced Sprayed Mortar strengthening system for brickwork wallettes

Application of Ordinary Fiber-Reinforced Concrete Layer for In-plane Retrofitting of Unreinforced Masonry Walls: Test and Modeling

Numerical analysis of the load-bearing capacity of brick masonry walls strengthened with textile reinforced mortar and subjected to eccentric compressive loading

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