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Francesco Bencardino
Department of Civil Engineering, University of Calabria, Via P. Bucci, Cubo 39B, Rende, 87036 Cosenza, Italy

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Journal article
Published: 31 August 2021 in Materials
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This paper shows a theoretical model for predicting the moment–curvature/load–deflection relationships and debonding failure of reinforced concrete (RC) beams externally strengthened with steel reinforced geopolymeric matrix (SRGM) or steel reinforced grout (SRG) systems. Force equilibrium and strain compatibility equations for a beam section divided into several segments are numerically solved using non-linear behaviour of concrete and internal steel bars. The deflection is then obtained from the flexural stiffness at a mid-span section. Considering the appropriate SRGM-concrete bond–slip law, calibrated on single-lap shear bond tests, both end and intermediate debonding failures are analysed. To predict the end debonding, an anchorage strength model is adopted. To predict intermediate debonding, at each pair of flexural cracks a shear stress limitation is placed at concrete–matrix interface and the differential problem is solved at steel strip–matrix interface. Based on the theoretical predictions, the comparisons with experimental data show that the proposed model can accurately predict the structural response of SRGM/SRG strengthened RC beams. It can be a useful tool for evaluating the behaviour of externally strengthened RC beams, avoiding experimental tests.

ACS Style

Francesco Bencardino; Mattia Nisticò. A Theoretical Model for Debonding Prediction in the RC Beams Externally Strengthened with Steel Strip and Inorganic Matrix. Materials 2021, 14, 4961 .

AMA Style

Francesco Bencardino, Mattia Nisticò. A Theoretical Model for Debonding Prediction in the RC Beams Externally Strengthened with Steel Strip and Inorganic Matrix. Materials. 2021; 14 (17):4961.

Chicago/Turabian Style

Francesco Bencardino; Mattia Nisticò. 2021. "A Theoretical Model for Debonding Prediction in the RC Beams Externally Strengthened with Steel Strip and Inorganic Matrix." Materials 14, no. 17: 4961.

Journal article
Published: 15 June 2021 in Construction and Building Materials
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The conservation and the preservation of existing masonry buildings, most of them recognized as cultural heritage, require retrofitting techniques that should reduce the invasiveness and assure reversibility and compatibility with the substrate. In this perspective, the strengthening system should be able to improve the bearing capacity of the structural member and, at the same time, to assure mechanical and material compatibility. The use of Fabric Reinforced Cementitious Matrix (FRCM) composites is now recognized to be suitable for these purposes. Indeed, the inorganic matrix has comparable properties with respect to the existing historical mortars while the fabric has relevant tensile strength. At the same time, these systems assure satisfactory level of reversibility (or at least removability). In this scenario, the present research aims to investigate the FRCM-confinement of masonry columns focusing on the influence of specific parameters, still poorly investigated, in order to deeply understand their effect on the mechanical response. In particular, the experimental variables are: the type of masonry substrate (Tuff and clay brick with lime-based mortar), the type of FRCM system (glass dry mesh + lime-based mortar and steel mesh + lime-based mortar) and the number of plies (1, 2 and 3). In addition, a detailed experimental characterization of the utilized materials has been carried out, including bond tests between the reinforcement and the substrate. The results evidenced that the FRCM is an effective solution for masonry columns confinement once a proper design is performed, taking into account all involved parameters. The different strengthening systems exhibited different failure modes. Generally, a single ply of external reinforcement produced a negligible increase of bearing capacity. Both strengthening systems applied with multi-ply strengthening schemes produced a significant increase in terms of strength and ultimate axial deformation. This benefit was observed for both Tuff and clay masonry columns. Two available design-oriented formulas, reported in the Italian CNR (National Research Council) and ACI (American Concrete Institute) guidelines have been utilized, in order to further investigate their accuracy, mostly in the case of multi-layered reinforcement. The performed comparisons highlight that the two design relationships provide similar and accurate results when referred to the GFRCM (Glass-FRCM) system in 1- and 2-layer configurations, while the predictions appear conservative when 3 layers of GFRCM are utilized, for both masonry types. Considering the SRG (Steel Reinforced Grout) system, the results predicted by the two models are more scattered, mostly when the number of layers increases. In addition, the formulation proposed by CNR appears more accurate in the case of Tuff masonry while the ACI predictions are closer to the experimental results in the case of clay brick masonry.

ACS Style

M.A. Aiello; F. Bencardino; A. Cascardi; T. D'Antino; M. Fagone; I. Frana; L. La Mendola; G.P. Lignola; C. Mazzotti; F. Micelli; G. Minafò; A. Napoli; L. Ombres; M.C. Oddo; C. Poggi; A. Prota; G. Ramaglia; G. Ranocchiai; R. Realfonzo; S. Verre. Masonry columns confined with fabric reinforced cementitious matrix (FRCM) systems: A round robin test. Construction and Building Materials 2021, 298, 123816 .

AMA Style

M.A. Aiello, F. Bencardino, A. Cascardi, T. D'Antino, M. Fagone, I. Frana, L. La Mendola, G.P. Lignola, C. Mazzotti, F. Micelli, G. Minafò, A. Napoli, L. Ombres, M.C. Oddo, C. Poggi, A. Prota, G. Ramaglia, G. Ranocchiai, R. Realfonzo, S. Verre. Masonry columns confined with fabric reinforced cementitious matrix (FRCM) systems: A round robin test. Construction and Building Materials. 2021; 298 ():123816.

Chicago/Turabian Style

M.A. Aiello; F. Bencardino; A. Cascardi; T. D'Antino; M. Fagone; I. Frana; L. La Mendola; G.P. Lignola; C. Mazzotti; F. Micelli; G. Minafò; A. Napoli; L. Ombres; M.C. Oddo; C. Poggi; A. Prota; G. Ramaglia; G. Ranocchiai; R. Realfonzo; S. Verre. 2021. "Masonry columns confined with fabric reinforced cementitious matrix (FRCM) systems: A round robin test." Construction and Building Materials 298, no. : 123816.

Journal article
Published: 27 January 2020 in Fibers
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This paper deals with the experimental and numerical study of the bond behavior of two steel reinforced grout (SRG)-strengthened masonry systems. Ten shear bond tests were carried out on prismatic masonry specimens. The data of experimental tests are recorded and results are given in terms of load/stress-global slip curves, failure modes, tables, graphs and photographic reports, comparing the results of the two strengthening systems. Two kinds of steel fibers available in marketplace were used: ultra-high tensile strength steel galvanized micro-cords and stainless-steel strands. The main target is to obtain information on the behavior of the bond between masonry surface and the two types of SRG composites, which are characterized by two substantial differences: tensile strength with a ratio of 2.4 and the corresponding surface mass density with a ratio of 0.30. Finally, the influence of the matrices coupled with the two systems is critically analyzed. The characterization of the bond behavior is necessary in order to confirm the performance of the SRG systems that have become increasingly used and attractive. It also aims to make a contribution to the existing knowledge especially in relation to the use of low resistance steel fibers (stainless steel) which are still few studied today. Furthermore, using a suitable interface law proposed in the literature, a numerical model is defined and employed to simulate the behavior of the specimens tested in the laboratory. The comparisons show a good agreement between numerical and experimental results in terms of the maximum load, load versus global-slip curves, and crack patterns.

ACS Style

Francesco Bencardino; Mattia Nisticò; Salvatore Verre. Experimental Investigation and Numerical Analysis of Bond Behavior in SRG-Strengthened Masonry Prisms Using UHTSS and Stainless-Steel Fibers. Fibers 2020, 8, 8 .

AMA Style

Francesco Bencardino, Mattia Nisticò, Salvatore Verre. Experimental Investigation and Numerical Analysis of Bond Behavior in SRG-Strengthened Masonry Prisms Using UHTSS and Stainless-Steel Fibers. Fibers. 2020; 8 (2):8.

Chicago/Turabian Style

Francesco Bencardino; Mattia Nisticò; Salvatore Verre. 2020. "Experimental Investigation and Numerical Analysis of Bond Behavior in SRG-Strengthened Masonry Prisms Using UHTSS and Stainless-Steel Fibers." Fibers 8, no. 2: 8.

Journal article
Published: 01 September 2018 in Composites Part B: Engineering
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ACS Style

Francesco Bencardino; Christian Carloni; Antonio Condello; Francesco Focacci; Annalisa Napoli; Roberto Realfonzo. Flexural behaviour of RC members strengthened with FRCM: State-of-the-art and predictive formulas. Composites Part B: Engineering 2018, 148, 132 -148.

AMA Style

Francesco Bencardino, Christian Carloni, Antonio Condello, Francesco Focacci, Annalisa Napoli, Roberto Realfonzo. Flexural behaviour of RC members strengthened with FRCM: State-of-the-art and predictive formulas. Composites Part B: Engineering. 2018; 148 ():132-148.

Chicago/Turabian Style

Francesco Bencardino; Christian Carloni; Antonio Condello; Francesco Focacci; Annalisa Napoli; Roberto Realfonzo. 2018. "Flexural behaviour of RC members strengthened with FRCM: State-of-the-art and predictive formulas." Composites Part B: Engineering 148, no. : 132-148.

Conference paper
Published: 06 August 2017 in High Tech Concrete: Where Technology and Engineering Meet
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The work aims to investigate the structural performance of Reinforced Concrete (RC) beams strengthened with an innovative system made of stainless steel fibre strips embedded into an inorganic matrix (S-FRCM: Steel – Fibre Reinforced Cementitious Matrix). To simulate existing RC structures and investigate the potential application of S-FRCM system on a poor concrete substrate, the beams were built with low concrete strength. Two different strengthening procedures were used: traditional Externally Bonded (EB) technique and innovative Inhibiting-Repairing-Strengthening (IRS) technique. The IRS solution consists in the installation of stainless steel strips in the cover concrete, restoring the latter with a polymer-based inorganic matrix that contains property of protection against further corrosion. This inorganic matrix, as well as similar matrices available on the market labeled as “geopolymeric matrices”, contains fly-ash and/or slags and it is suitable for retrofitting of RC structures with deteriorated cover concrete and/or corroded steel bars. A set of RC beams strengthened according to the two different techniques (EB and IRS) were monotonically tested under four-points bending. Test results show that the S-FRCM system provides an average increment on load carrying capacity of about 25% compared with unstrengthened beam. On the basis of experimental data available in literature, a simple analytical formula for prediction of S-FRCM debonding strain is proposed.

ACS Style

Francesco Bencardino; Antonio Condello. Effectiveness of S-FRCM Strengthening System Applied with Two Different Techniques. High Tech Concrete: Where Technology and Engineering Meet 2017, 2011 -2019.

AMA Style

Francesco Bencardino, Antonio Condello. Effectiveness of S-FRCM Strengthening System Applied with Two Different Techniques. High Tech Concrete: Where Technology and Engineering Meet. 2017; ():2011-2019.

Chicago/Turabian Style

Francesco Bencardino; Antonio Condello. 2017. "Effectiveness of S-FRCM Strengthening System Applied with Two Different Techniques." High Tech Concrete: Where Technology and Engineering Meet , no. : 2011-2019.

Original articles
Published: 27 March 2017 in International Journal of Architectural Heritage
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This study aims to experimentally investigate the structural performance of an innovative solution, material and technique, for the structural consolidation of Reinforced Concrete (RC) modern cultural heritage, with cracking and spalling of the concrete cover and corrosion of internal steel bars. The innovative solution consists in the installation of a stainless steel fibers in the cover concrete thickness using an inorganic polymers-based matrix. The consolidation technique (IRS) includes three operations in one: corrosion inhibition (I), cover concrete repair (R), and flexural strengthening (S). Two groups of three RC beams with low concrete strength and corroded smooth round/ribbed bars, similar to many existing structures, were tested under four-point bending. One beam of each group was used as control beam and two beams were strengthened according to either traditional Externally Bonded (EB) or innovative IRS technique. The experimental results show that the use of this innovative solution for the structural consolidation leads to the improvement of the overall structural behavior. The proposed technique and materials could be used for the restoration of modern cultural heritage, with the beneficial aspects of reduction of execution time, of pollution and of the intervention costs, compared to traditional EB-Fiber Reinforced Polymer.

ACS Style

Francesco Bencardino; Antonio Condello; Federica Castiglione. An Innovative Solution for the Structural Consolidation of RC Modern Cultural Heritage. International Journal of Architectural Heritage 2017, 11, 829 -842.

AMA Style

Francesco Bencardino, Antonio Condello, Federica Castiglione. An Innovative Solution for the Structural Consolidation of RC Modern Cultural Heritage. International Journal of Architectural Heritage. 2017; 11 (6):829-842.

Chicago/Turabian Style

Francesco Bencardino; Antonio Condello; Federica Castiglione. 2017. "An Innovative Solution for the Structural Consolidation of RC Modern Cultural Heritage." International Journal of Architectural Heritage 11, no. 6: 829-842.

Journal article
Published: 01 August 2016 in Construction and Building Materials
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ACS Style

Francesco Bencardino; Antonio Condello. Innovative solution to retrofit RC members: Inhibiting-Repairing-Strengthening (IRS). Construction and Building Materials 2016, 117, 171 -181.

AMA Style

Francesco Bencardino, Antonio Condello. Innovative solution to retrofit RC members: Inhibiting-Repairing-Strengthening (IRS). Construction and Building Materials. 2016; 117 ():171-181.

Chicago/Turabian Style

Francesco Bencardino; Antonio Condello. 2016. "Innovative solution to retrofit RC members: Inhibiting-Repairing-Strengthening (IRS)." Construction and Building Materials 117, no. : 171-181.

Conference paper
Published: 29 May 2016 in 9th International Conference on Fracture Mechanics of Concrete and Concrete Structures
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ACS Style

Francesco Bencardino; Antonio Condello. Structural performances of RC beams strengthened with Steel Reinforced Geopolymeric Matrix (SRGM). 9th International Conference on Fracture Mechanics of Concrete and Concrete Structures 2016, 1 .

AMA Style

Francesco Bencardino, Antonio Condello. Structural performances of RC beams strengthened with Steel Reinforced Geopolymeric Matrix (SRGM). 9th International Conference on Fracture Mechanics of Concrete and Concrete Structures. 2016; ():1.

Chicago/Turabian Style

Francesco Bencardino; Antonio Condello. 2016. "Structural performances of RC beams strengthened with Steel Reinforced Geopolymeric Matrix (SRGM)." 9th International Conference on Fracture Mechanics of Concrete and Concrete Structures , no. : 1.

Journal article
Published: 26 May 2016 in Fibers
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The purpose of this study is to evaluate, through a nonlinear Finite Element (FE) analysis, the structural behavior of Reinforced Concrete (RC) beams externally strengthened by using Steel Reinforced Grout (SRG) and Steel Reinforced Polymer (SRP) systems. The parameters taken into account were the external strengthening configuration, with or without U-wrap end anchorages, as well as the strengthening materials. The numerical simulations were carried out by using a three-dimensional (3D) FE model. The linear and nonlinear behavior of all materials was modeled by appropriate constitutive laws and the connection between concrete substrate and external reinforcing layer was simulated by means of cohesive surfaces with appropriate bond-slip laws. In order to overcome convergence difficulties, to simulate the quasi-static response of the strengthened RC beams, a dynamic approach was adopted. The numerical results in terms of load-displacement curves, failure modes, and load and strain values at critical stages were validated against some experimental data. As a result, the proposed 3D FE model can be used to predict the structural behavior up to ultimate stage of similar strengthened beams without carrying out experimental tests.

ACS Style

Francesco Bencardino; Antonio Condello. 3D FE Analysis of RC Beams Externally Strengthened with SRG/SRP Systems. Fibers 2016, 4, 19 .

AMA Style

Francesco Bencardino, Antonio Condello. 3D FE Analysis of RC Beams Externally Strengthened with SRG/SRP Systems. Fibers. 2016; 4 (4):19.

Chicago/Turabian Style

Francesco Bencardino; Antonio Condello. 2016. "3D FE Analysis of RC Beams Externally Strengthened with SRG/SRP Systems." Fibers 4, no. 4: 19.

Journal article
Published: 01 May 2016 in Composites Part B: Engineering
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ACS Style

Francesco Bencardino; Antonio Condello. Eco-friendly external strengthening system for existing reinforced concrete beams. Composites Part B: Engineering 2016, 93, 163 -173.

AMA Style

Francesco Bencardino, Antonio Condello. Eco-friendly external strengthening system for existing reinforced concrete beams. Composites Part B: Engineering. 2016; 93 ():163-173.

Chicago/Turabian Style

Francesco Bencardino; Antonio Condello. 2016. "Eco-friendly external strengthening system for existing reinforced concrete beams." Composites Part B: Engineering 93, no. : 163-173.

Journal article
Published: 01 November 2015 in Composite Structures
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ACS Style

Francesco Bencardino; Antonio Condello. SRG/SRP–concrete bond–slip laws for externally strengthened RC beams. Composite Structures 2015, 132, 804 -815.

AMA Style

Francesco Bencardino, Antonio Condello. SRG/SRP–concrete bond–slip laws for externally strengthened RC beams. Composite Structures. 2015; 132 ():804-815.

Chicago/Turabian Style

Francesco Bencardino; Antonio Condello. 2015. "SRG/SRP–concrete bond–slip laws for externally strengthened RC beams." Composite Structures 132, no. : 804-815.

Journal article
Published: 01 September 2015 in Composites Part B: Engineering
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ACS Style

A.G. Razaqpur; Francesco Bencardino; L. Rizzuti; G. Spadea. FRP reinforced/prestressed concrete members: A torsional design model. Composites Part B: Engineering 2015, 79, 144 -155.

AMA Style

A.G. Razaqpur, Francesco Bencardino, L. Rizzuti, G. Spadea. FRP reinforced/prestressed concrete members: A torsional design model. Composites Part B: Engineering. 2015; 79 ():144-155.

Chicago/Turabian Style

A.G. Razaqpur; Francesco Bencardino; L. Rizzuti; G. Spadea. 2015. "FRP reinforced/prestressed concrete members: A torsional design model." Composites Part B: Engineering 79, no. : 144-155.

Journal article
Published: 01 September 2015 in Engineering Structures
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ACS Style

Giuseppe Spadea; Francesco Bencardino; Fabio Sorrenti; Ramnath Narayan Swamy. Structural effectiveness of FRP materials in strengthening RC beams. Engineering Structures 2015, 99, 631 -641.

AMA Style

Giuseppe Spadea, Francesco Bencardino, Fabio Sorrenti, Ramnath Narayan Swamy. Structural effectiveness of FRP materials in strengthening RC beams. Engineering Structures. 2015; 99 ():631-641.

Chicago/Turabian Style

Giuseppe Spadea; Francesco Bencardino; Fabio Sorrenti; Ramnath Narayan Swamy. 2015. "Structural effectiveness of FRP materials in strengthening RC beams." Engineering Structures 99, no. : 631-641.

Journal article
Published: 01 July 2015 in Composites Part B: Engineering
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ACS Style

Francesco Bencardino; Antonio Condello. Reliability and adaptability of the analytical models proposed for the FRP systems to the Steel Reinforced Polymer and Steel Reinforced Grout strengthening systems. Composites Part B: Engineering 2015, 76, 249 -259.

AMA Style

Francesco Bencardino, Antonio Condello. Reliability and adaptability of the analytical models proposed for the FRP systems to the Steel Reinforced Polymer and Steel Reinforced Grout strengthening systems. Composites Part B: Engineering. 2015; 76 ():249-259.

Chicago/Turabian Style

Francesco Bencardino; Antonio Condello. 2015. "Reliability and adaptability of the analytical models proposed for the FRP systems to the Steel Reinforced Polymer and Steel Reinforced Grout strengthening systems." Composites Part B: Engineering 76, no. : 249-259.

Journal article
Published: 01 January 2015 in Challenge Journal of Structural Mechanics
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The capacity provisions of conventional Reinforced Concrete (RC) and Prestressed Concrete (PC) beams subjected to combined action of torsion, shear and flexure are well known and stated by international/national codes. Similar provisions lack for concrete members containing Fibre Reinforced Polymer (FRP) reinforcements. In general, there is paucity of research on the treatment of torsion combined with other stress resultants for FRP-RC/PC members. In this paper the theoretical method proposed by the Canadian standard CSA S806 for FRP-RC/PC structures is presented. The critical issues, related to this topic, such as the appropriate strength and inclination of the diagonal struts and failure criteria are critically analyzed and addressed. In order to assess the reliability of this study a comparison between available experimental data regarding FRP-RC/PC beams subjected to combined actions and their corresponding theoretical provisions derived by the CSA S806 standard is shown. Furthermore, another approach, available in literature, which is based on the space truss model, is examined and used for comparison in order to evaluate the theoretical provisions offered by this model against the tests value of the set of the beams analyzed in this study. Based on the critical analysis of the results, it can be highlighted that the CSA method is able to conservatively predict the capacity of these beams.

ACS Style

A. Ghani Razaqpur; Francesco Bencardino; Lidia Rizzuti; Giuseppe Spadea. FRP-RC/PC members subjected to combined actions. Challenge Journal of Structural Mechanics 2015, 1, 1 .

AMA Style

A. Ghani Razaqpur, Francesco Bencardino, Lidia Rizzuti, Giuseppe Spadea. FRP-RC/PC members subjected to combined actions. Challenge Journal of Structural Mechanics. 2015; 1 (1):1.

Chicago/Turabian Style

A. Ghani Razaqpur; Francesco Bencardino; Lidia Rizzuti; Giuseppe Spadea. 2015. "FRP-RC/PC members subjected to combined actions." Challenge Journal of Structural Mechanics 1, no. 1: 1.

Journal article
Published: 25 December 2014 in Computers and Concrete
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ACS Style

Francesco Bencardino; Antonio Condello. Experimental study and numerical investigation of behavior of RC beams strengthened with steel reinforced grout. Computers and Concrete 2014, 14, 711 -725.

AMA Style

Francesco Bencardino, Antonio Condello. Experimental study and numerical investigation of behavior of RC beams strengthened with steel reinforced grout. Computers and Concrete. 2014; 14 (6):711-725.

Chicago/Turabian Style

Francesco Bencardino; Antonio Condello. 2014. "Experimental study and numerical investigation of behavior of RC beams strengthened with steel reinforced grout." Computers and Concrete 14, no. 6: 711-725.

Journal article
Published: 01 March 2014 in Mechanics Research Communications
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The paper presents the results obtained from a finite element analysis compared with those of an experimental investigation carried out on a set of reinforced concrete beams externally strengthened to flexure. An innovative steel reinforced grout system with two different external reinforcement (with and without end anchorages) was used to evaluate the effectiveness of the strengthening system. A multi-crack concrete model and a delamination damage model for the interface between concrete and external reinforcement were adopted. All the beams were extensively instrumented and tested under four-point bending. Loads at concrete cracking, yielding of tension steel and at ultimate, as well as, strains in compression concrete, tension steel and external reinforcement, were detected and compared with the numerical results. The performance of the strengthened beams, in terms of load–deflection curves, strength and ductility, was also evaluated and compared with those of the control beam to highlight the main parameters which affect the mode of failure and the overall behavior of the structural elements. Finally, in order to study the structural behavior of different types of strengthened beams a parametric analysis has been developed.

ACS Style

Francesco Bencardino; Giuseppe Spadea. FE modeling of RC beams externally strengthened with innovative materials. Mechanics Research Communications 2014, 58, 88 -96.

AMA Style

Francesco Bencardino, Giuseppe Spadea. FE modeling of RC beams externally strengthened with innovative materials. Mechanics Research Communications. 2014; 58 ():88-96.

Chicago/Turabian Style

Francesco Bencardino; Giuseppe Spadea. 2014. "FE modeling of RC beams externally strengthened with innovative materials." Mechanics Research Communications 58, no. : 88-96.

Journal article
Published: 01 January 2014 in International Journal of Structural Engineering
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This paper presents the results obtained from an experimental investigation carried out on a set of reinforced concrete beams strengthened in flexure by using an unidirectional high-strength carbon steel fibre reinforcing mesh embedded in an inorganic matrix (SRG: steel reinforced grout) and in an organic matrix (SRP: steel reinforced polymer). Test parameters include the use or not of external U-wrap end anchorages in order to prevent delamination premature failure of the longitudinal sheet and to evaluate the effects on strength and ductility of the strengthened beams. A theoretical study to evaluate the failure loads and material strains of the strengthened beams was also carried out according to the guidelines ACI 440.2R-08 and CNR-DT 200 R1/2013 available for the fibre reinforced polymer systems. The experimental and theoretical analysis of the strengthened beams allowed to evaluate the effectiveness of the two external strengthening systems (SRG and SRP) in increasing the load carrying capacity and to highlight the role of external U-wrap end anchorages on the overall structural behaviour of the strengthened beams.

ACS Style

Francesco Bencardino; Antonio Condello. Structural behaviour of RC beams externally strengthened in flexure with SRG and SRP systems. International Journal of Structural Engineering 2014, 5, 346 .

AMA Style

Francesco Bencardino, Antonio Condello. Structural behaviour of RC beams externally strengthened in flexure with SRG and SRP systems. International Journal of Structural Engineering. 2014; 5 (4):346.

Chicago/Turabian Style

Francesco Bencardino; Antonio Condello. 2014. "Structural behaviour of RC beams externally strengthened in flexure with SRG and SRP systems." International Journal of Structural Engineering 5, no. 4: 346.

Research article
Published: 07 November 2013 in Advances in Civil Engineering
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High performance fibre reinforced concrete (HPFRC) is a modern structural material with a high potential and with an increasing number of structural applications. Structural design of HPFRC elements is based on the post-cracking residual strength provided by fibre reinforcement, and for structural use, a minimum mechanical performance of HPFRC must be guaranteed. To optimize the performance of HPFRC in structural members, it is necessary to establish the mechanical properties and the post-cracking and fracture behaviour in a univocal and reliable way. The best test methodology to evaluate the post-cracking and toughness properties of HPFRC is the beam bending test. Two different types of configurations are proposed: the three-point and the four-point bending tests. The overall focus of this paper is to evaluate the mechanical properties and the post-cracking and fracture behaviour of HPFRC, using the two different standard test procedures. To achieve these aims, plain and fibre concrete specimens were tested. All the test specimens were extensively instrumented to establish the strength properties, crack tip and crack mouth opening displacement, and post-cracking behaviour. The results of the two types of bending tests were critically analysed and compared to identify and highlight the differing effects of the bending load configurations on the mechanical parameters of HPFRC material.

ACS Style

Francesco Bencardino. Mechanical Parameters and Post-Cracking Behaviour of HPFRC according to Three-Point and Four-Point Bending Test. Advances in Civil Engineering 2013, 2013, 1 -9.

AMA Style

Francesco Bencardino. Mechanical Parameters and Post-Cracking Behaviour of HPFRC according to Three-Point and Four-Point Bending Test. Advances in Civil Engineering. 2013; 2013 ():1-9.

Chicago/Turabian Style

Francesco Bencardino. 2013. "Mechanical Parameters and Post-Cracking Behaviour of HPFRC according to Three-Point and Four-Point Bending Test." Advances in Civil Engineering 2013, no. : 1-9.

Journal article
Published: 01 March 2013 in Composites Part B: Engineering
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ACS Style

Francesco Bencardino; Lidia Rizzuti; Giuseppe Spadea; Ramnath Narayan Swamy. Implications of test methodology on post-cracking and fracture behaviour of Steel Fibre Reinforced Concrete. Composites Part B: Engineering 2013, 46, 31 -38.

AMA Style

Francesco Bencardino, Lidia Rizzuti, Giuseppe Spadea, Ramnath Narayan Swamy. Implications of test methodology on post-cracking and fracture behaviour of Steel Fibre Reinforced Concrete. Composites Part B: Engineering. 2013; 46 ():31-38.

Chicago/Turabian Style

Francesco Bencardino; Lidia Rizzuti; Giuseppe Spadea; Ramnath Narayan Swamy. 2013. "Implications of test methodology on post-cracking and fracture behaviour of Steel Fibre Reinforced Concrete." Composites Part B: Engineering 46, no. : 31-38.