Analytical stress-strain law of FRP confined masonry in compression: Literature review and design provisions

Minafò, Giovanni; D’Anna, Jennifer; Cucchiara, Calogero; Monaco, Alessia; Mendola, Lidia La

doi:10.1016/j.compositesb.2016.10.019

Cited by 47 publications

(13 citation statements)

References 12 publications

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“…Recent studies addressed important results on the behavior of masonry columns confined with unidirectional FRP (e.g., in Masia and Shrive, 2003;Faella et al, 2004;Krevaikas and Triantafillou, 2005;Shrive, 2006;Aiello et al, 2007;Corradi et al, 2007;Alecci et al, 2008;D'Ambra et al, 2008;Minafò et al, 2017 or by external wrapping with ribbons or sheets. In some cases, internal confinement provided by transverse FRP bars was also studied (e.g., in Micelli et al, 2004;Aiello et al, 2009).…”

Section: Introduction and Research Significancementioning

confidence: 99%

Discontinuous FRP-Confinement of Masonry Columns

Cascardi

Lerna

Micelli

et al. 2020

Front. Built Environ.

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Recent seismic events, all over the world, demonstrated that masonry constructions are prone to brittle collapses when shear or compression capacity is reached. It is clear that, in many real cases, masonry columns need to be strengthened for enhancing their load-carrying capacity and to develop a more ductile response. The Fiber Reinforced Polymers (FRPs) confinement of masonry columns is a well-known technique that may produce these advantages. Unfortunately, full-wrapping insulates the column from the environment; so interstitial humidity can easily occur and cause the acceleration of the masonry's decay. In order to prevent it, partial-confinement is commonly assessed instead of total-jacketing. For this reason, a research was led, consisting of an experimental and theoretical study focused on the discontinuous FRP-confinement. Thus, two different series of masonry columns were confined with Glass-FRP (GFRP) and Carbon-FRP (CFRP) strips bonded to the column with an epoxy resin. Different schemes of FRP-wrapping were investigated by means of uniaxial compression tests. Moreover, an analytical method for the prediction of the experimental results was also provided. The proposed model was based on the relationship between the different lateral deformations of the confined and unconfined regions (experimentally recorded by using strain gauges). The new iterative procedure was found able to provide theoretical stress vs. strain curves; which demonstrated to accurately match the experimental recordings. The proposed model was also validated by parametric analyses, presented in the paper.

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Section: Introduction and Research Significancementioning

confidence: 99%

Discontinuous FRP-Confinement of Masonry Columns

Cascardi

Lerna

Micelli

et al. 2020

Front. Built Environ.

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“…A comparative analysis of the main theoretical models was carried out by Minafo et al (2017) [16] to estimate increased strength, ultimate strain and full stress-strain curves of FRP confined masonry in compression based on available experimental data. They considered a number of geometrical and mechanical variables, included the influence of the section corner radius.…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of BFRP confinement on the compressive behaviour of clay brick masonry cylinders

D’Anna

Amato

Chen

et al. 2020

Composite Structures

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This paper presents the results of an experimental and analytical study on the compressive behaviour of small clay brick masonry cylinders reinforced with a basalt fibre reinforced polymer (BFRP) composite. Fourteen cylinders, manufactured using two assembling schemes and confined using either one or two layers of BFRP grids, were tested under monotonic compression loading.Traditional strain measuring systems were integrated with digital image correlation (DIC) technique. The BFRP confined masonry cylinders showed a ductile behaviour characterised by a softening branch of the stress-strain curve. The experimental strains, strength, and full stressstrain curves were modelled using analytical models available in the literature. A modified version of the CNR model proposed in this study provided the best strength prediction.

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“…The compression test of brick and mortar separately as well as wall prisms indicated that their strength was still higher than standard limits these wall pieces could be reused under appropriate conditions [7], the bed mortar was tested under shear loads to understand bed joints reliability [8]. Vivek Bindiganavile et al the masonry impact resistance increased in fibers [9], the bond strength in stress sensitivity decreased with increase in the fibre [10]. Mohamed chemrouk et al have studied the flexural strength and ductility and concrete strength of fibre reinforced concrete are improved in fibre content [11], the flexural strength was increased [12], the workability of concrete is important on the orientation and distribution of the fibres [13].…”

Section: Introductionmentioning

confidence: 99%

Strengthening of Unreinforced Masonry with Fibre Reinforced Concrete

Gayathri¹,

Kanchidurai²,

Krishanan³

et al. 2018

IJET

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Unreinforced Masonry buildings are vulnerable because the walls and parapets aren’t securely tried to the floors and roof. In an earthquake, parapets can break away, walls pull apart and the floors collapse. This paper presents the experimental study performed on the flexural bond strength of unreinforced brick masonry prism. Different percentage (1%, 2%, and 3%) of Hooked Steel Fibre was used. One of the most geometrical parameters of fibres is their length, diameter and aspect ratio. Masonry prism will be cast and tested as per the guidelines are given in ASTM E518/E518-15. The results of the flexural bond strength test of prisms with and without fibre discussed.

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Analytical stress-strain law of FRP confined masonry in compression: Literature review and design provisions

Cited by 47 publications

References 12 publications

Discontinuous FRP-Confinement of Masonry Columns

Discontinuous FRP-Confinement of Masonry Columns

Effectiveness of BFRP confinement on the compressive behaviour of clay brick masonry cylinders

Strengthening of Unreinforced Masonry with Fibre Reinforced Concrete

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