Numerical Analysis of Masonry Confined by FRCM

Murgo, Francesco Saverio; Mazzotti, Claudio

doi:10.4028/www.scientific.net/kem.747.558

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…The brick and mortar can be modelled as a unique homogeneous material; this technique is called macro model approach as reported in Murgo and Mazzotti [9]. This assumption is acceptable because the masonry results very rigid inside the contrast system and considering that the applied shear load does not reach high values.…”

Section: Finite Element Modelmentioning

confidence: 99%

“…Reinforcing fabrics/fibers could be made of steel [2], basalt [3], polyparaphenylene-benzobisoxazole (PBO) [4], carbon [5], aramid or glass [6] and basalt. Many experimental works are available in the literature on FRCM/SRG-concrete bond tests [2][3][4][5][6], flexural strengthening using traditional [7] and innovative eco-friendly [8] technique and on axial behavior of confined masonry columns [9].…”

Section: Introductionmentioning

confidence: 99%

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Experimental Investigation and Numerical Analysis of Bond Behavior in SRG-Strengthened Masonry Prisms Using UHTSS and Stainless-Steel Fibers

Bencardino

Nisticò

Verre

2020

Fibers

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This paper deals with the experimental and numerical study of the bond behavior of two steel reinforced grout (SRG)-strengthened masonry systems. Ten shear bond tests were carried out on prismatic masonry specimens. The data of experimental tests are recorded and results are given in terms of load/stress-global slip curves, failure modes, tables, graphs and photographic reports, comparing the results of the two strengthening systems. Two kinds of steel fibers available in marketplace were used: ultra-high tensile strength steel galvanized micro-cords and stainless-steel strands. The main target is to obtain information on the behavior of the bond between masonry surface and the two types of SRG composites, which are characterized by two substantial differences: tensile strength with a ratio of 2.4 and the corresponding surface mass density with a ratio of 0.30. Finally, the influence of the matrices coupled with the two systems is critically analyzed. The characterization of the bond behavior is necessary in order to confirm the performance of the SRG systems that have become increasingly used and attractive. It also aims to make a contribution to the existing knowledge especially in relation to the use of low resistance steel fibers (stainless steel) which are still few studied today. Furthermore, using a suitable interface law proposed in the literature, a numerical model is defined and employed to simulate the behavior of the specimens tested in the laboratory. The comparisons show a good agreement between numerical and experimental results in terms of the maximum load, load versus global-slip curves, and crack patterns.

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Section: Finite Element Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental Investigation and Numerical Analysis of Bond Behavior in SRG-Strengthened Masonry Prisms Using UHTSS and Stainless-Steel Fibers

Bencardino

Nisticò

Verre

2020

Fibers

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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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The diagonal shear behavior of masonry walls fabricated with historical lime-based mortar and retrofitted with near surface mounted method

Soleymani,

Najafgholipour,

Johari

et al. 2024

Structures

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Numerical Analysis of Masonry Confined by FRCM

Cited by 3 publications

References 12 publications

Experimental Investigation and Numerical Analysis of Bond Behavior in SRG-Strengthened Masonry Prisms Using UHTSS and Stainless-Steel Fibers

Experimental Investigation and Numerical Analysis of Bond Behavior in SRG-Strengthened Masonry Prisms Using UHTSS and Stainless-Steel Fibers

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

The diagonal shear behavior of masonry walls fabricated with historical lime-based mortar and retrofitted with near surface mounted method

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