Performance assessment of basalt FRCM for retrofit applications on masonry

Lignola, Gian Piero; Caggegi, Carmelo; Ceroni, Francesca; Santis, Stefano De; Krajewski, Piotr; Lourénço, Paulo B.; Morganti, M.; Papanicolaou, Catherine; Pellegrino, Carlo; Prota, Andrea; Zuccarino, Luigia

doi:10.1016/j.compositesb.2017.05.003

Cited by 189 publications

(125 citation statements)

References 48 publications

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“…The multilinear stress-strain relationship appears to be the favorite approach to model an experimental stress-strain curve. However, the experimental results [18] support also the use of simplified approaches according to linear, bilinear, or trilinear stress-strain relationships.…”

Section: Mechanical Model Of Compositementioning

confidence: 60%

“…For strengthening systems made of inorganic matrix and basalt fiber, the experimental results confirm the linear and the bi-linear trends [15,18]. Instead, when natural hemp fiber replaces the synthetic fiber, the experimental results confirm the bi-linear and tri-linear trends [28,29].…”

Section: Mechanical Model Of Compositementioning

confidence: 74%

“…For strengthening systems based on inorganic matrix (i.e. cementitious or lime-mortar) the stiffness and strength of the matrix provides a non-negligible effects on ultimate behavior of strengthened elements [18]. These effects are often deleterious on the ductility of strengthened elements [11].…”

Section: Introductionmentioning

confidence: 99%

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Ductility Capacity Assessment of Masonry Members Strengthened With Composites

Ramaglia¹,

Fabbrocino²,

Lignola³

et al. 2019

Proceedings of the 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Models able to assess the effects of composite strengthening on masonry structures are worthy of further developments. This is also evident in modern design codes and guidelines where, for the masonry, there is lack of well-established approaches. In fact, most of the strengthening applications on masonry structures are designed based on suggestions by the manufacturers, missing strict and clear calculations. Such an approach leads, very often, to the execution of large and therefore economically demanding strengthening systems, also not encouraging their diffusion. Furthermore, the use of excessive strengthening often involves an excessive, and above all involuntary, reduction of ductility capacity. It needs also further investigation the impact of peculiar behaviors of composites (e.g. up to trilinear stress strain behavior for FRCM) on the flexural response of masonry. In this paper the behavior of strengthened masonry members is analyzed accounting for the variability of mechanical characteristics of both masonry and the strengthening systems. The behavior of the members is analyzed in terms of the moment-curvature relationships. This approach allows to evaluate both the flexural capacity and the ductility capacity of the strengthened masonry sections. In fact, the ductility is a key aspect in the retrofit of masonry structures. Finally, the process of adimensionalization, allows to extend the results to any case, providing a useful tool not only for verification but also for the design of interventions.

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Section: Mechanical Model Of Compositementioning

confidence: 60%

Section: Mechanical Model Of Compositementioning

confidence: 74%

See 1 more Smart Citation

Ductility Capacity Assessment of Masonry Members Strengthened With Composites

Ramaglia¹,

Fabbrocino²,

Lignola³

et al. 2019

Proceedings of the 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

Self Cite

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“…However, due to decomposition of epoxy matrix, the tensile strength of CFRP and GFRP at 600°C decreased to less than 60% of the strength measured at room temperature, and the tensile strength of PBO fabric at 500°C decreased to less than 40% of the strength measured at room temperature [17,19]. erefore, even if the epoxy is replaced with a cementitious matrix, it should be considered that the sufficient fire resistance cannot be secured if these fabrics are used as strengthening materials.…”

Section: Introductionmentioning

confidence: 99%

Flexural Behavior of RC Slabs Strengthened in Flexure with Basalt Fabric‐Reinforced Cementitious Matrix

Lee

Hong

Yeon

et al. 2018

Advances in Materials Science and Engineering

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is paper presents both experimental and analytical research results for predicting the flexural capacity of reinforced concrete (RC) slabs strengthened in flexure with basalt fabric-reinforced cementitious matrix (FRCM). A total of 13 specimens were fabricated to evaluate the flexural behavior of RC slabs strengthened with basalt FRCM composite and were tested under fourpoint loading.e fiber type, tensile reinforcement ratio, and the number of fabric layers were chosen as experimental variables. e maximum load of FRCM-strengthened specimens increased from 11.2% to 98.2% relative to the reference specimens. e energy ratio and ductility of the FRCM-strengthened specimens decreased with the higher amount of fabric and tensile reinforcement. e effective stress level of FRCM fabric can be accurately predicted by a bond strength of ACI 549 and Jung's model.

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“…Continuous modeling has been successfully employed in many practical applications of civil engineering, and specifically for studying the behavior of real-life unreinforced masonry structures under seismic actions [5][6][7]. As a matter of fact, this type of analysis is mandatory when dealing with the design of retrofitting and strengthening interventions, as those based on the use of externally applied FRP or FRCM reinforcement systems [8][9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

A multiscale damage analysis of periodic composites using a couple-stress/Cauchy multidomain model: Application to masonry structures

Leonetti

Greco

Trovalusci

et al. 2018

Composites Part B: Engineering

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A novel multiscale strategy is proposed for the damage analysis of masonry structures modeled as periodic composites. Such a computational strategy, whose aim is to reduce the typically high computational cost exhibited by fully microscopic numerical analyses, is based on a multiscale/multidomain model equipped with an adaptive capability, which allows to automatically zoom-in the zones incipiently affected by damage onset. The associated model refinement criterion requires the determination of microscopically informed first failure surfaces, which take into account both classical and bending deformation effects, by taking advantage of a couple-stress based homogenization technique. In order to assess the efficacy of the proposed multiscale modeling strategy, some numerical simulations are presented, involving a medium-sized wall test subjected to combined shear and flexure loading conditions. The related accuracy and computational performances of this methodology are investigated via suitable comparisons with a purely discrete model of masonry. Special attention is devoted to the analysis of the bending macroscopic deformation effects. Further comparisons with experimental results taken from the literature are carried out in order to validate its predictive capability in terms of peak and post-peak mechanical behavior.

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Performance assessment of basalt FRCM for retrofit applications on masonry

Cited by 189 publications

References 48 publications

Ductility Capacity Assessment of Masonry Members Strengthened With Composites

Ductility Capacity Assessment of Masonry Members Strengthened With Composites

Flexural Behavior of RC Slabs Strengthened in Flexure with Basalt Fabric‐Reinforced Cementitious Matrix

A multiscale damage analysis of periodic composites using a couple-stress/Cauchy multidomain model: Application to masonry structures

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