Structural Response of Elements Combining Ultrahigh-Performance Fiber-Reinforced Concretes and Reinforced Concrete

Habel, Katrin; Denarié, Emmanuel; Brühwiler, Eugen

doi:10.1061/(asce)0733-9445(2006)132:11(1793)

Cited by 97 publications

(65 citation statements)

References 3 publications

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“…7 was adopted for a characteristic size equal to 2mm [31]. This model is in agreement with the model proposed by Habel et al [27] and adopted by Bruhwiler [26] and Noshiravani and Bruhwiler [28]. According to this model, the behaviour of UHPFRC is modelled with an elastic behaviour up to initiation of the microcracking followed by a second linear part in to the phase of strain hardening with multiple microcracking.…”

Section: Numerical Modelling Of Uhpfrcsupporting

confidence: 63%

“…The findings presented in the previous studies are mostly focused on the mechanical properties of UHPFRC, and there are other published studies on strengthening applications [24][25][26][27][28][29][30][31]. Farhat et al [24] examined beams strengthened with UHPFRC strips.…”

Section: Introductionmentioning

confidence: 99%

“…The application of UHPFRC for the repair and strengthening of beam-column joints was investigated by Beschi et al [29] and remarkable bearing capacity increment was observed [29]. Combination of UHPFRC with reinforcing steel bars for the rehabilitation of existing concrete elements was examined by Habel et al [27] and this technique was found to be quite promising, since the existing structures were efficiently strengthened and their resistance and their ultimate moment were considerably increased [27]. An analytical model for elements strengthened with combined UHPFRC and steel bars was proposed by Noshiravani and Brühwiler [28] together with a simplified formulation for the shear resistance of the composite members [28].…”

Section: Introductionmentioning

confidence: 99%

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Strengthening of reinforced concrete beams using ultra high performance fibre reinforced concrete (UHPFRC)

Λαμπρόπουλος

Paschalis

Τσιούλου

et al. 2016

Engineering Structures

240

142

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In this study the efficiency of the use of Ultra High Performance Fibre Reinforced Concrete (UHPFRC) for the strengthening of existing Reinforced Concrete (RC) beams has been investigated. Experimental work has been conducted to determine UHPFRC material properties. Dog-bone shaped specimens have been tested under direct tensile loading, and standard cubes have been tested in compression. These results have been used for the development of a numerical model using Finite Element Method. The reliability of the numerical model has been validated using further experimental results of UHPFRC layers tested under flexural loading. Further numerical study has been conducted on full-scale beams strengthened with UHPFRC layers and jackets, and these results were compared to respective results of beams strengthened with conventional RC layers and with combination of UHPFRC and steel reinforcing bars. Superior performance was observed for strengthened beams with UHPFRC three side jackets, and the efficiency of this technique was highlighted by comparisons with other strengthening techniques.

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Section: Numerical Modelling Of Uhpfrcsupporting

confidence: 63%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Strengthening of reinforced concrete beams using ultra high performance fibre reinforced concrete (UHPFRC)

Λαμπρόπουλος

Paschalis

Τσιούλου

et al. 2016

Engineering Structures

240

142

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“…This method is an emerging technique for the design, protection and strengthening of new or existing structures (Brühwiler and Denarié 2008). The combination of the R-UHPFRC and RC elements, by either in-situ casting or gluing prefabricated plates, creates composite members with an enhanced structural performance (Alaee and Karihaloo 2003;Habel et al 2006;Noshiravani and Brühwiler 2013). As illustrated in Fig.…”

Section: Introductionmentioning

confidence: 99%

Analytical Model for Predicting Response and Flexure-Shear Resistance of Composite Beams Combining Reinforced Ultrahigh Performance Fiber-Reinforced Concrete and Reinforced Concrete

Noshiravani¹,

Brühwiler

2014

J. Struct. Eng.

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The addition of an external layer of reinforced ultrahigh performance fiber-reinforced concrete (R-UHPFRC) on top of reinforced concrete (RC) floor slabs and bridge decks is an emerging technique for strengthening RC structures. As an additional reinforcement, a layer of R-UHPFRC significantly increases the maximum resistance and deformation capacity of RC elements, thus creating a composite element that herein is referred to as RU-RC elements. This paper presents an elastic-plastic fictitious RU-RC composite hinge model for the damage caused by flexural and flexure-shear cracks in the RC element of the composite members. The model accounts for the nonlinear interaction of the two elements due to intermediate-crack-induced debonding (ICD) zone in the near-interface concrete. The model determines the force-deflection response and force in the RU-RC composite tension chord. Furthermore, the contribution of the R-UHPFRC element and the shear resistance envelope of the member are calculated. Comparison with available experimental results shows that the model can accurately predict the member response, resistance and failure mode. A simplified formulation for the shear resistance of the composite members is proposed. The models in this paper are needed for the design of the structural behavior of RC beams strengthened with R-UHPFRC.

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“…Although the material cost of UHPC itself is much higher than that of normal concrete [2,3], the UHPC facade manufactured by precast method can be assembled by bolt fastening, so the construction cost can be reduced and the whole construction cost can be reduced. Nevertheless, the study on the bolt joints of UHPC panels is still lacking.…”

Section: Introductionmentioning

confidence: 99%

Strength and Behavior of Bolted Ultra-High Performance Concrete Panel Joint with Geometric Parameter

Kwon¹,

Chung²,

Hong³

2017

J Appl Mech Eng

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One of the most reasonable ways to connect thin ultra-high performance concrete (UHPC) facades to building structures is bolted joints. To design the joints for the facades economically and safely, a clear investigation of the structural behavior is needed. In this study, the joint strength, failure modes and strain concentration phenomena of the bolted UHPC panels are investigated by direct tensile test. The main experimental variables are the geometric parameters, which are the width of the specimen, its thickness, and the distance from the center of the hole to the edge. Experimental results show that ductility of the joint depends on the failure mode. In addition, it is shown that the increase in the material cost of the panel, such as size and thickness, does not necessarily lead to an increase in the joint strength.

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Structural Response of Elements Combining Ultrahigh-Performance Fiber-Reinforced Concretes and Reinforced Concrete

Cited by 97 publications

References 3 publications

Strengthening of reinforced concrete beams using ultra high performance fibre reinforced concrete (UHPFRC)

Strengthening of reinforced concrete beams using ultra high performance fibre reinforced concrete (UHPFRC)

Analytical Model for Predicting Response and Flexure-Shear Resistance of Composite Beams Combining Reinforced Ultrahigh Performance Fiber-Reinforced Concrete and Reinforced Concrete

Strength and Behavior of Bolted Ultra-High Performance Concrete Panel Joint with Geometric Parameter

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