Structural behaviour of masonry panels strengthened with an innovative hemp fibre composite grid

Menna, Costantino; Asprone, Domenico; Durante, Massimo; Zinno, Alberto; Balsamo, Alberto; Prota, Andrea

doi:10.1016/j.conbuildmat.2015.09.051

Cited by 99 publications

(60 citation statements)

References 34 publications

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“…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]. For composite systems made with organic matrix, the experimental tests confirm a linear trend [15] as accepted in the modern building codes and guidelines.…”

Section: Mechanical Model Of Compositementioning

confidence: 67%

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: 67%

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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“…Effectiveness of natural-based TRMs in enhancing the structural performance of masonry has also recently been the subject of few studies, see e.g. [45,46]. With the urgent need for lowering the carbon footprint of the constructions, it is expected that natural-based TRMs receive a more extensive attention, especially with focus on innovative ways to enhance the durability of these composites, in the coming years.…”

Section: Trm-strengthened Masonry Mechanical Behaviourmentioning

confidence: 99%

Mechanics and durability of lime-based textile reinforced mortars

Ghiassi

2020

RILEM Tech Lett

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Application of lime-based textile-reinforced mortars (TRMs) for strengthening of masonry structures have received a growing attention in recent years. An extensive effort has been devoted to understanding of the performance of these composites and their effectiveness in improving the seismic safety of existing masonry structures. Nevertheless, several aspects regarding the durability and mechanics of these composites still remain unknown. This letter is an effort on highlighting those aspects considering both experimental and numerical modelling approaches.

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“…Se debe aclarar que la red de cáñamo ha sido realizada totalmente a mano. Más detalles se indican en Menna et al (2015).…”

Section: Materialesunclassified

Comparación entre redes de fibras sintéticas y redes de fibras de cáñamo para el refuerzo de muros de albañileria = Comparison between synthetic fiber networks and hemp fiber networks for the reinforcement of masonry walls

Vilardi¹

2016

ADE

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ResumenLa existencia de una gran cantidad de edificios antiguos ha movilizado la investigación para estudiar nuevos sistemas de refuerzo a aquellas construcciones que sean dañadas por decadencia fisiológica o por terremoto. El presente documento demuestra la eficacia de un sistema de refuerzo innovador para los muros de mampostería, constituyentes los elementos estructurales de los edificios históricos. Se hace una comparación entre unas redes bidireccionales de fibras sintéticas tradicionales y las de fibras naturales, ambas pegadas a las dos fachadas del muro con matriz de mortero. El resultado muestra la aplicación de las fibras de cáñamo como refuerzo sísmico y una mayor compatibilidad de estas con el material que caracterizan los edificios antiguos. AbstractThe existence of a large number of old buildings has mobilized research to study new systems of reinforcement to those buildings that are damaged by physiological decay or earthquake. This document demonstrates the effectiveness of an innovative reinforcement system for masonry walls, which are the structural elements of historic buildings. A comparison is made between bidirectional networks of traditional synthetic fibers and those of natural fibers, both glued to the two facades of the wall with mortar matrix. The result shows the application of hemp fibers as seismic reinforcement and a greater compatibility of these with the material that characterize the old buildings.

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Structural behaviour of masonry panels strengthened with an innovative hemp fibre composite grid

Cited by 99 publications

References 34 publications

Ductility Capacity Assessment of Masonry Members Strengthened With Composites

Ductility Capacity Assessment of Masonry Members Strengthened With Composites

Mechanics and durability of lime-based textile reinforced mortars

Comparación entre redes de fibras sintéticas y redes de fibras de cáñamo para el refuerzo de muros de albañileria = Comparison between synthetic fiber networks and hemp fiber networks for the reinforcement of masonry walls

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