Compressive behaviour of eccentrically loaded slender masonry columns confined by FRP

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

doi:10.1016/j.engstruct.2018.06.011

Cited by 20 publications

(7 citation statements)

References 16 publications

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“…The yarns of the mesh along the warp and weft were woven and fixed at their intersection with nylon fibres. Based on the technical sheet, the grid had a nominal cell size of 6 × 6 mm (Figure 1, a unit weight equal to 250 g/m 2 , the density of the fibre was 2.75 g/cm 3 and the equivalent thickness was 0.039 mm. The nominal values of the tensile strength, ultimate strain and Young's modulus provided by the manufacturer were f fu = 60 kN/m, ε u = 1.8% and E f = 89 GPa, respectively.…”

Section: Basalt Textile Gridmentioning

confidence: 99%

“…The use of composite materials for strengthening purposes has become common during the last few decades. Among the most widespread composites in the field of civil engineering are fibre-reinforced polymer (FRP) materials, which are made of an epoxy matrix combined with different types of fabrics and are used for strengthening concrete [1,2] and masonry structures [3][4][5][6]. Several studies have investigated the use of FRP materials in the field of civil engineering for the strengthening of existing reinforced concrete structural members, especially against shear via transverse reinforcements; recent applications can be found in [7].…”

Section: Introductionmentioning

confidence: 99%

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Effects of Different Test Setups on the Experimental Tensile Behaviour of Basalt Fibre Bidirectional Grids for FRCM Composites

D’Anna

Amato

Chen

et al. 2020

Fibers

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Fibre-reinforced cementitious matrix (FRCM) composites have been effectively used during the last ten years for the strengthening of existing concrete and masonry structures. These composite materials are made of medium- and high-strength fibre meshes embedded in inorganic matrices. Synthetic fibres are the ones that are currently the most used; however, natural fibres, such as basalt fibres, have recently been receiving growing attention. This work presents an extensive experimental study on the mechanical characterisation of a primed basalt fibre bidirectional grid. Fifty monotonic tensile tests on basalt grid strips were performed by varying different parameters, such as the dimension of the specimens, the clamping system, the measurement system and the test rate. Some of the tests were carried out using a video-extensometer to measure each specimen’s strain. The aim of the study was to find the most suitable setup for the tensile characterisation of basalt textiles, in particular, to prevent slippage of the samples at the gripping area and fully exploit the tensile capacity of the grid.

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Section: Basalt Textile Gridmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Different Test Setups on the Experimental Tensile Behaviour of Basalt Fibre Bidirectional Grids for FRCM Composites

D’Anna

Amato

Chen

et al. 2020

Fibers

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“…Boundary condition (UR1=0,UR2=0,UR3=0) bottom end hinged and loads are applied at top end of the column. Boundary conditions for the slender columns are verified using [15] Loads were applied at eccentricity of 20mm from the centre. Global seeds were assigned to part instances created and corresponding instances were meshed.…”

Section: B Analytical Outcomesmentioning

confidence: 99%

Buckling Behavior of ECC Column Reinforced With Steel Bar

Abhilashdoss¹,

Kumar²,

Manivel³

2019

IJITEE

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Engineered cementitious composite (ECC) is a type of high performance fiber reinforced concrete (FRC) with some good strain hardening behavior. This study deals with use of two different fibers, polyvinyl alcohol (PVA) and polypropylene (PP) fiber.PVA fiber is better than PP in terms of mechanical property. A total of 5 columns are prepared, one each of ECC with PVA fiber PVA(R/ECC), ECC with PP fiber PP(R/ECC), and one reinforced cement concrete (RC) column for comparisons. Rest of the two column deals with effective use of ECC in tension zone of the column PVA(R/ECC-RC) and PP(R/ECC-RC) i.e.in the top and the bottom (L/4) region, ECC is used and the centre (L/2) region is filled with RC. Same longitudinal reinforcement ratio was adopted for all the columns and columns were tested under eccentric compression. Due to eccentric compression RC column went through scaling and spalling process while this was not found in ECC columns due to fiber binding effect with cementitious material .Further more columns were analysed using finite element software ABAQUS to plot, Load versus Deformation curve, yielding pattern and stress distribution in the column .

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“…Cascardi et al [20] studied three full-reversible FRP-confinement innovative techniques of heritage masonry columns. Minafò et al [21] explored the compressive behaviour of eccentrically loaded slender masonry columns confined by FRP and found that the effects of confinement vanished in case of length greater than 20. Rousakis [22] observed the reinforced concrete columns that were reinforced by nonbonded composite ropes subjected to seismic loadings that focused on the damage buildup and control at member level that may prevent the collapse.…”

Section: Introductionmentioning

confidence: 99%

Flexural Strengthening and Rehabilitation of Reinforced Concrete Beam Using BFRP Composites: Finite Element Approach

Kadhim

Numan

Özakça

2019

Advances in Civil Engineering

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Basalt fiber-reinforced polymer (BFRP) is adopted widely in recent years in many countries to rehabilitate or strengthen structural elements such as reinforced concrete (RC) beams because it is cheap and it has stellar mechanical performance. By activating the finite element (FE) simulation, the present research submits an extensive study on the strengthening and rehabilitation of damaged full-scale RC beams due to corrosions in the main reinforcement caused by BFRP sheets. Different parameters were taken into consideration such as corrosion grade, BFRP wrapping schemes, and the number of layers. The flexural performance of the models that build up as the control model and the damaged and the repaired methodologies by BFRP that are adopted and tested by others under the effects of four-point static loadings were also underwent examination. The full interaction at BFRP-concrete interface and the full bonding between sheets presupposed were investigated for all models. The numerical analysis findings were compared with the experimental measurements and found to be in good agreement. The current numerical analysis proved that the ultimate load rised by 14.8% in spite of 20% corrosion in the flexural steel rebar under eight layers of BFRP composite and bottom wrapping mode. In addition, under all strategies of wrapping schemes, the findings also indicated that the deflection ductility index noticeably reduced for RC beams with BFRP composites compared to the control beam. Finally, all the results of midspan deflection, crack patterns, and strain response of the composite system were analysed and discussed briefly.

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Compressive behaviour of eccentrically loaded slender masonry columns confined by FRP

Cited by 20 publications

References 16 publications

Effects of Different Test Setups on the Experimental Tensile Behaviour of Basalt Fibre Bidirectional Grids for FRCM Composites

Effects of Different Test Setups on the Experimental Tensile Behaviour of Basalt Fibre Bidirectional Grids for FRCM Composites

Buckling Behavior of ECC Column Reinforced With Steel Bar

Flexural Strengthening and Rehabilitation of Reinforced Concrete Beam Using BFRP Composites: Finite Element Approach

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