Statistical Analysis on Mechanical Properties of FRP Materials for Structural Strengthening

Salzano, Piera; Bonati, Antonio; Ceroni, Francesca; Crisci, Giovanni; Franco, Annalisa; Occhiuzzi, Antonio

doi:10.7712/120119.7294.19634

Cited by 3 publications

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References 3 publications

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“…Experimental data belonging to the more populated class of cured-in situ products, namely 210C, have been analysed and results are described in the following, whereas preformed systems will be dealt with in a separate article [15]. Data come from 8 different laboratories, all of them located in Italian Universities.…”

Section: Testing Activitymentioning

confidence: 99%

Experimental results of a national technical assessment procedure on commercial FRP for structural strengthening: wet-lay-up systems

et al. 2020

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The paper shows the results of a large experimental activity for the qualification of wet-layup FRP products for structural repair and/or strengthening, required by the Italian national approval authority. The qualification procedure and the correspondent design rules are described in national guidelines. The analysis of the experimental results of a large number of qualification tests allows to highlight some aspects in the national procedure that could be addressed in a future revision of the guidelines. In particular, statistical analyses were carried out in order to assess the most suitable probabilistic models able to describe the experimental distribution of the tensile strength and the Young's modulus of FRP wet-lay-up materials falling in the same class. The analyses were developed with reference to both ordinary and artificial environmental conditions. Nevertheless the paper is focussed on the case of wet-lay-up FRP materials, it can be considered exemplary of a problem common to other products.

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Section: Testing Activitymentioning

confidence: 99%

Experimental results of a national technical assessment procedure on commercial FRP for structural strengthening: wet-lay-up systems

et al. 2020

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“…The first ones on concrete, steel, masonry, and wooden structural element [7][8][9][10][11]. Pre-formed FRP materials are largely used as well, made of fibers pre-impregnated with resins in the form of a sheet, characterized by initial axial rigidity, and a mono-directional behavior [12] that can be mechanically fastened [13]. These composites could represent the best solution for structural rehabilitation; indeed, they are characterized by a high strength/weight ratio, being successful in increasing the flexural capacity for the structural element without significant increases of mass of structures.…”

Section: Introductionmentioning

confidence: 99%

Effects of the Mortar Matrix on the Flexural Capacity of Masonry Cross Sections Strengthened with FRCM Materials

et al. 2020

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The strengthening intervention strategies that exist for masonry buildings are based on the use of thin composites and are a recent activity used in structural engineering. Nowadays, mortar matrices are frequently found instead of epoxy resins, since the fiber reinforced cementitious matrix (FRCM) composites are more compatible with masonry than fiber reinforced plastic (FRP) ones. The mortar matrix in FRCM composites is not comparable to the epoxy resin, and therefore its contribution is different not only in traction but above all on the compression side. Due to its larger thickness, if compared to the epoxy resin, the impact of the mortar matrix on the flexural response of strengthened cross sections is not negligible. This paper aimed to investigate the influence of the contribution of the mortar matrix on the compression side on the flexural capacity of strengthened cross section. As such, p–m interaction domains and bending moment–curvature diagrams were evaluated to understand the influence of several mechanical properties of fiber and mortar matrices on FRCM efficiency, typical of real applications. Hence, the impact of several constitutive relationships of composites (linear and bilinear behavior) was considered for the structural analysis of the strengthened cross section. The presented results are all completely in a dimensionless form; therefore, independent of geometry and mechanical parameters can be the basis for developing standardized design and/or verification methodologies useful for the strengthening systems for masonry elements.

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Adaptive development of a lightweight composite beam prototype for a pedestrian bridge

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Statistical Analysis on Mechanical Properties of FRP Materials for Structural Strengthening

Cited by 3 publications

References 3 publications

Experimental results of a national technical assessment procedure on commercial FRP for structural strengthening: wet-lay-up systems

Experimental results of a national technical assessment procedure on commercial FRP for structural strengthening: wet-lay-up systems

Effects of the Mortar Matrix on the Flexural Capacity of Masonry Cross Sections Strengthened with FRCM Materials

Adaptive development of a lightweight composite beam prototype for a pedestrian bridge

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