Effects of RC beams reinforcement using near surface mounted reinforced FRP composites

Ranković, Slobodan; Folić, Radomir; Mijalković, Marina

doi:10.2298/fuace1002177r

Cited by 12 publications

(3 citation statements)

References 2 publications

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“…To validate the proposed procedure, a model of a RC beam reinforced with CFRP is developed. The beam considered is the same as the one in literature [9]. Model Description.…”

Section: Numerical Examplementioning

confidence: 99%

Finite Element Simulation of RC Beam Strengthened with FRP

2012

AMR

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The finite element modeling is established for reinforced concrete(RC) beam reinforced with fiber reinforced polymer (FRP) using the serial/parallel mixing theory. The mixture algorithm of serial/parallel rule is studied based on the finite element method. The results obtained from the finite element simulation are compared with the experimental data. The comparisons are made for load-deflection curves at mid-span. The numerical analysis results agree well with the experimental results. Numerical results indicate that the proposed procedure is validity.

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“…To validate the proposed procedure, a model of a RC beam reinforced with CFRP is developed. The beam considered is the same as the one in literature [9]. Model Description.…”

Section: Numerical Examplementioning

confidence: 99%

Finite Element Simulation of RC Beam Strengthened with FRP

2012

AMR

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“…One of the factors is the length of the FRP bar for strengthening, which is reflected in the failure mode due to the pull-out of the rod in the case when the rod is longer than the cracked span, and due to the peeling-off of the concrete cover in the case when the cracks reach the end of the FRP rod for strengthening [18]. Other factor that influences the adhesiveness and failure mode of the strengthened beam is surface treatment and the bond effect between the epoxy and the concrete [18,19]. The type of the FRP reinforcement also has an impact on the strength of the beams.…”

Section: Introductionmentioning

confidence: 99%

Experimental Analysis of an Innovative Double Strap Joint Splicing of GFRP Bars by NSM Methods for Strengthening RC Beams

Ranković,

Folić,

Zorić

et al. 2023

Period. Polytech. Civil Eng.

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The double strap joint splicing of glass fiber reinforced polymer (GFRP) bars for reinforced concrete (RC) beams strengthening, applying the near surface mounting (NSM) method, has been proposed in the paper. The proposed method consists of application of the supplementary GFRP bars symmetrically positioned in the cut-off zone of the main GFRP reinforcement. The performances of this splicing method have been experimentally tested for the most unfavorable case of the GFRP reinforcement cut-off in the maximal bending moment zones. During the experiment, the varied parameter has been overlapping length of the bars, taking values of 20∅ and 40∅. Evaluation of the splicing technique is done comparing the experimental results with the results of the behavior of beams strengthened by GFRP bars without cut-off and with cut-off, but without splicing. Experimental research encompassed analysis of strength, stiffness, ductility, crack pattern, strains in the steel, GFRP reinforcement and concrete, and the failure modes of the beams. It has been shown that in case of the cut-off of the GFRP bar, strengthening effectivity decreases for 39%, and that in the case of bypassing the cut-off using double strap 20∅ and 40∅ long, strengthening effectivity decreased 23%, and 14% respectively, compared to the beam without GFRP bar cut-off. Using extrapolation, it has been shown that double strap with length of 60∅ provided strength equivalent to the case without cut-off. The result of application of this splicing method of the additional GFRP bars is significant increase of strength and serviceability of the strengthened RC beams.

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“…The validity of using UHPC should be seen in terms of the full utilization of its achieved mechanical properties, optimization of the proportion of steel fibres, silica fume, cement, and also when UHPC is combined with conventional, prestressed or FRP reinforcement (Yang et al 2010;Campione 2008;Ranković et al 2010). Extremely high mechanical properties and improved durability of UHPC are achieved by applying the latest generation of superplasticizers, which make the high degree of water reduction in the concrete mixture.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Uhpfrc Beams Subjected to Bending Using Genetic Algorithms

Ćirović

Радоњанин

Trivunić

et al. 2014

Journal of Civil Engineering and Management

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Abstract. Ultra high performance fibre reinforced concrete (UHPFRC) is cementitious composite with very high strength, and when compared with ordinary concrete it is a more superior material both in terms of its mechanical properties and its durability. In order to predict the behaviour of UHPFRC beams, first of all, experiments were carried out to investigate the mechanical properties of composites containing 2% and 4% of steel fibres. Following this, four beams of 2 m in length were tested by subjecting to four point bending. Two beams contained only micro steel fibres, while the remaining two contained conventional steel bar reinforcement. On the basis of experimental studies and recommendations by the AFGC for UHPC, the behaviour of the beams was modelled and optimization was carried out using genetic algorithms (GA) according to the criterion of minimum price. In this paper, the prices of individual UHPFRC beams are also shown in comparison with beams, which contain steel bars or prestressed reinforcement.Keywords: ultra high performance fibre reinforced concrete, optimization, beams, genetic algorithms. Reference to this paper should be made as follows: Ćirović, G.; Radonjanin, V.; Trivunić, M.; Nikolić, D. 2014. Optimization of UHPFRC beams subjected to bending using genetic algorithms, Journal of Civil Engineering and Management 20(4): 527-536. http://dx

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Effects of RC beams reinforcement using near surface mounted reinforced FRP composites

Cited by 12 publications

References 2 publications

Finite Element Simulation of RC Beam Strengthened with FRP

Finite Element Simulation of RC Beam Strengthened with FRP

Experimental Analysis of an Innovative Double Strap Joint Splicing of GFRP Bars by NSM Methods for Strengthening RC Beams

Optimization of Uhpfrc Beams Subjected to Bending Using Genetic Algorithms

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