The use of textile-reinforced mortar as a strengthening technique for the infill walls out-of-plane behaviour

Furtado, André; Rodrigues, Hugo; Arêde, António; Melo, José; Varum, Humberto

doi:10.1016/j.compstruct.2020.113029

Cited by 28 publications

(12 citation statements)

References 13 publications

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“…The TRC system has also been used for strengthening of infill walls (masonry walls) [ 18 , 19 ] for increasing the confinement of RC columns [ 20 , 21 ]. The influence of matrix type, fiber type and orientation, fiber surface treatment, and number of textile plies on the structural performance of RC structural elements strengthened with TRC systems is well summarized in the literature [ 1 , 2 , 3 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Reinforced Concrete Slabs Strengthened with Carbon Textile Grid and Cementitious Grout

2021

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A textile reinforced concrete (TRC) system has been widely used for repair and strengthening of deteriorated reinforced concrete (RC) structures. This paper proposes an accelerated on-site installation method of a TRC system by grouting to strengthen deteriorated RC structures. Four RC slabs were strengthened with one ply of carbon textile grid and 20 mm-thick cementitious grout. The TRC strengthened slab specimens were tested under flexure and the test results were compared with those of an unstrengthened specimen and theoretical solutions. Furthermore, the TRC strengthened specimens experienced longer plastic deformation after steel yield than the unstrengthened specimen. The TRC strengthened specimens exhibited many fine cracks and finally failed by rupture of the textile. Therefore, TRC system with the proposed installation method can effectively be used for strengthening of deteriorated RC structural elements. The theoretically computed steel yield and ultimate loads overestimate the test data by 11% and 5%, respectively.

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Section: Introductionmentioning

confidence: 99%

Reinforced Concrete Slabs Strengthened with Carbon Textile Grid and Cementitious Grout

2021

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“…Many studies have considered the compressive performance of masonry walls strengthened using various methods [6][7][8][9][10][11][12][13][14][15]. Grouting is one of the most commonly used strengthening techniques for types of masonry with a large percentage of voids.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, thin layers of fiber-reinforced mortar or a fabric-reinforced-cementitious matrix have been applied on one or both sides of bearing walls as an effective seismic strengthening technique applied to existing masonry buildings, especially if there is no restriction on changing their appearance. Many experimental tests have highlighted this technique's ability to improve the compressive and shear behavior of masonry [12][13][14][15]. Uniaxial and diagonal compression tests were carried out by Lucchini et al on both un-strengthened walls and masonry samples retrofitted with a 25 mm thick steel fiber reinforced mortar (SFRM) coating.…”

Section: Introductionmentioning

confidence: 99%

“…Two different solutions were tested by varying the type of mesh and the anchorage. The proposed strengthening solutions revealed to be very efficient in preventing the collapse of the infill panels [13]. The performance of fabric with lime mortar as the cementitious matrix was investigated by Tripathy et al for the strengthening of lime masonry walls.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Study on the Compressive Behaviors of Brick Masonry Strengthened with Modified Oyster Shell Ash Mortar

Chen

Mai

et al. 2021

Buildings

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Masonry bricks were widely used in construction of the walls in most of Chinese historical buildings. The low strength of lime–clay mortar used in existing historical brick masonry walls has usually led to poor performance such as cracking and collapse during earthquakes. As the composition of modified oyster shell ash mortar (MOSA mortar) with higher strength is similar to that of lime–clay mortar, it can be used to partially replace original lime–clay mortar for historical brick masonry buildings in order to improve their seismic performance. Previous research has proven that this strengthening method for brick masonry is effective in improving shear strength. In this paper, we present further experimental research regarding the compressive behaviors of brick masonry strengthened by replacing mortar with a MOSA mortar. The test results showed that the compressive strength of brick masonry specimens strengthened by the proposed method meets the design requirements. The formula for calculating compressive strength for brick masonry strengthened by replacing mortar was obtained by fitting the test results. The calculated values were consistent with the tested ones. In addition, the stress–strain relationship of tested specimens under axial compression was simulated using the parabolic model.

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“…The aforementioned issues have recently encouraged the research and the industry in developing innovative infills that can be generally classified into three categories: the enhanced infills ( [21], [22], [23], [24]), the panels uncoupled from the frame ( [25], [26]) and the ductile infills ( [27], [28], [29], [30], [31]). The latter innovative infill typology, that has been recently proposed and studied both experimentally and numerically, is object of ongoing and future studies.…”

Section: Introductionmentioning

confidence: 99%

Local Effects Due to the Seismic Interaction Between Innovative Ductile Masonry Infills and Rc Elements

Milanesi¹,

Bolis²,

Pelucco³

et al. 2021

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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The seismic vulnerability of rigidly attached masonry infills has been repeatedly highlighted through post-event surveys, experimental and numerical studies. Although many innovative solutions have been proposed, especially in the last decades, many aspects of these systems are object of ongoing or future studies. The ductile infills with sliding joints have been currently investigated by different researchers starting from experimental tests and using the test outcomes to calibrate and create finite element models with the aim to perform parametric analysis and define the local and global interaction with the structure. Moreover, the innovative infills with sliding joints have shown a completely different in-plane behavior with respect to the nonductile ones. Since the creation of the diagonal strut is avoided and the shear sliding mechanisms fostered in predefined sliding joints, the interaction between the masonry panel and the RC members represents novelty with respect to the "traditional" rigidly attached masonry solutions. Within the present paper the results of a numerical model calibrated according to inplane experimental tests are presented and the local interaction between the RC structural member and the innovative ductile infill with sliding joints is discussed. The study adopts a validated finite element model approach to an experimental campaign that has never been simulated through detailed FEMs and compares the numerical results with the experimental results related to the local effects.

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The use of textile-reinforced mortar as a strengthening technique for the infill walls out-of-plane behaviour

Cited by 28 publications

References 13 publications

Reinforced Concrete Slabs Strengthened with Carbon Textile Grid and Cementitious Grout

Reinforced Concrete Slabs Strengthened with Carbon Textile Grid and Cementitious Grout

Experimental Study on the Compressive Behaviors of Brick Masonry Strengthened with Modified Oyster Shell Ash Mortar

Local Effects Due to the Seismic Interaction Between Innovative Ductile Masonry Infills and Rc Elements

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