Experimental study of bond behaviour between concrete and FRP bars using a pull-out test

Baena, Marta; Torres, Lluís; Turón, A.; Barris, Cristina

doi:10.1016/j.compositesb.2009.07.003

Cited by 402 publications

(253 citation statements)

References 13 publications

(33 reference statements)

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“…Using these results, the design recommendations were made concerning optimum rib geometries of GFRP ribbed rebars with superior bondslip characteristics, which concluded that the optimal rib spacing of ribbed rebars is the same as the rebar diameter, and that the optimal rib height is 6% of the rebar diameter. Baena et al (2009) tested 88 pull-out specimens that were prepared according to ACI 440.3R-04 and CSA S806-02 standards. Rebars (reinforcing bars) made of carbon-and glass-fibre reinforced polymers (CFRP and GFRP), as well as steel rebars with a constant embedment length of five times the rebar diameter were used.…”

Section: Introductionmentioning

confidence: 99%

Finite element modelling of slipage between FRP rebar and concrete in pull-out test

Akišins

Kovaļovs

Kulakov

et al. 2014

Proceedings of the International Conference „Innovative Materials, Structures and Technologies”

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Abstract. The paper presents numerical results of direct pull-out test of glass fiber-reinforced polymer (GFRP) rebars embedded in concrete. Rebars of three different cross-sections are considered: circular without longitudinal ribs and with two and four ribs. The design analyses of the rebar configurations embedded in concrete are investigated by the 3D finite element method (FEM), which takes into account the non-linearity using ANSYS software. The results of the numerical model with two ribs were compared with the experimental results. Then, the effect of different rebar geometries to the load-slip pull-out curves was studied. It is concluded that the influence of rib height and width on the pull-out load in the rebar with 4 ribs is much higher than in the one with 2 ribs.

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Section: Introductionmentioning

confidence: 99%

Finite element modelling of slipage between FRP rebar and concrete in pull-out test

Akišins

Kovaļovs

Kulakov

et al. 2014

Proceedings of the International Conference „Innovative Materials, Structures and Technologies”

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“…1998;Guo y Cox, 1999;Hattori et al, 1995;Honma y Maruyama, 1989;Ito et al, 1989; J. F. Davalos et al, 2008;J. V. Cox y K. Bergeron, 2003;Kanakubo et al, 1993;Laralde y Rodriguez 1993;Malvar, 1992Malvar, , 1994Malvar, , 1995M. Baena et al, 2009;M.…”

Section: Adherencia Armadura-hormigónunclassified

“…Con base en los ensayos de pullout realizados se ha demostrado, para todos los tipos de barras de CFRP, que en el extremo no tensionado de la barra no comienza a producirse deslizamiento relativo hasta el final de este tramo BC (Fig. 2.49) (Achillides et al, 2004;Baena et al, 2009;Okelo et al, 2005).…”

Section: Comportamiento Adherente Entre Hormigón Y Barras De Cfrp Corunclassified

“…2.59, gráfica "control"). Baena et al, (2009), obtuvieron, en el caso de hormigón de resistencia a compresión superior a 45 MPa, una tensión adherente del orden de 11,85 MPa, a un deslizamiento de 0,33 mm (deslizamiento medio entre los dos extremos de la barra), estos valores son inferiores a los obtenidos en el mismo estudio sobre barras de acero corrugadas, las cuales desarrollan una tensión adherente máxima de 29,09 MPa a un deslizamiento de 4,11 mm. Sin embargo, con hormigón de resistencia a compresión inferior a 30 MPa, la adherencia de este tipo de barras de CFRP se aproxima a la de las barras de acero corrugadas.…”

Section: Investigaciónunclassified

“…Los resultados de las diferentes investigaciones realizadas hasta la fecha (Achillides et al, 2004;Dávalos et al, 2008;Baena et al, 2009;Tepfers, 2006) muestran que la resistencia del hormigón es uno de los parámetros, junto con la resistencia a cortante de la barra, que determinan el modo de rotura de adherencia de las barras de CFRP corrugadas, deformadas y con tratamiento superficial durante el ensayo de pullout. La Fig.…”

Section: Resistencia a Compresión Del Hormigónunclassified

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Influencia de los distintos tratamientos superficiales de las barras de fibra de carbono en su comportamiento adherente con el hormigón

Rodríguez¹

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Lately, due to the high cost of repairing concrete structures with steel on the effect of corrosion, designers have become aware of the need for new substitutes of corrugated steel bars. These materials must ensure the safety and the service, aesthetic and funnctional conditions of the structure during the lifetime it was designed for.Searching for new materials to replace the corrugated steel bars, carbon fiber reinforced polymer bars (CFRP) appear a few years ago. This type of material is lighter than steel bars. Additionaly, it has a tensile strength greater than steel bars and also solves the problem of corrosion.One of the most important parameters in the design of a structure is checking the bond to the concrete in any thermal conditions. As a result, before introducing this new type of bar it is compulsory to test it. In addition, it is one of the assumptions on which the current design standards of reinforced concrete structures are based.

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Verbundverhalten umwickelter CFK‐Stäbe in Beton – Kurzzeituntersuchung der Verbundeigenschaften mittels Pull‐out‐Tests

Hammerl¹,

Stoiber²,

Hämmerle³

et al. 2021

Beton und Stahlbetonbau

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Der Einsatz und die Verfügbarkeit von Bewehrung aus Carbonfaserverbundkunststoff (CFK) steigen stetig, weshalb ein umfangreiches Verständnis der Verbundeigenschaften essenziell ist. Die vorliegende Publikation gibt einen Überblick über unterschiedliche Ausführungsformen von CFK‐Stäben sowie über den Einfluss von ausgewählten Parametern auf das Verbundverhalten. Der Fokus wurde auf Stäbe mit straffer Umwickelung aus CFK‐Fasersträngen gelegt und die Konkurrenzfähigkeit im Vergleich zu anderen, beispielsweise subtraktiv bearbeiteten, eingefrästen Stäben wird aufgezeigt. In 84 Ausziehversuchen wurde das Verbundverhalten von umwickelten CFK‐Stäben in vier Betonarten getestet. Bei den untersuchten Stäben wurden dabei die Wendelbreite und ‐dicke, die Wendelsteigung, der Wendelabstand und der Stabdurchmesser variiert. Die Versuchsergebnisse werden in Verbundspannungs‐Schlupfdiagrammen präsentiert, verglichen und abschließend diskutiert.

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Experimental study of bond behaviour between concrete and FRP bars using a pull-out test

Cited by 402 publications

References 13 publications

Finite element modelling of slipage between FRP rebar and concrete in pull-out test

Finite element modelling of slipage between FRP rebar and concrete in pull-out test

Influencia de los distintos tratamientos superficiales de las barras de fibra de carbono en su comportamiento adherente con el hormigón

Verbundverhalten umwickelter CFK‐Stäbe in Beton – Kurzzeituntersuchung der Verbundeigenschaften mittels Pull‐out‐Tests

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