Experimental study of concrete beams prestressed with basalt fiber reinforced polymers. Part I: Flexural behavior and serviceability

Atutis, Mantas; Valivonis, Juozas; Atutis, Edgaras

doi:10.1016/j.compstruct.2017.01.081

Cited by 44 publications

(27 citation statements)

References 15 publications

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“…BFRP reinforcement is an anisotropic material, which means that in the longitudinal direction the physical and mechanical properties depend on the properties of fibers, and in the transverse direction its properties depend on the characteristics of resin. The research works of BFRP bars, which confirmed their applicability in reinforced structures, were conducted, among others, by Elgabbas et al (2016), Lapko and Urbański (2015), Atutis et al (2018), Duic et al (2018). However, the studies conducted by Lapko and Urbański (2015), Elgabbas et al (2016) showed that BFRP reinforced beams with a low reinforcement degree were characterized by high values of strains in the compression zone and several times larger strains in the tensile zone than analogous members with steel reinforcement (RC).…”

Section: Introductionmentioning

confidence: 94%

“…Due to the corrosion resistance, the use of FRP bars allows to reduce the thickness of the concrete cover of reinforcement, which also allows to reduce the dimensions of the structure cross-sections (Branston et al, 2016;Elgabbas et al, 2015). Atutis et al (2018) examined the concrete members with prestressed BFRP bars. The results confirmed the possibility of increasing stiffness of beams subjected to bending.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Deflection and Cracking of Concrete Beams with Non-Metallic Reinforcement

Kosior‐Kazberuk

Krassowska

2019

System Safety: Human - Technical Facility - Environment

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The composite bars have become a useful substitute for conventional reinforcement in civil engineering structures for which load capacity and resistance to influences of environmental factors' are required. Considering the requirements of responsible design of engineering structures with particular emphasis on durability, the use of non-metallic reinforcement in reinforced structural elements allows to reduce the costs related to erection of buildings, as well as the costs of building maintenance and renovations. The behaviour of model beams made of concrete reinforced with composite bars (fiber reinforced polymer bars) in three-point bending test was analyzed. The strength parameters of composite bars were tested. The bending capacity, deformation of concrete, and beam deflection were determined. Crack propagation in the model beams under load was analyzed using the Aramis 5M optical measuring system. Due to the strength characteristics of the composite reinforcing bars, the beams exhibited significant tensile strains, which resulted in the development of cracks of considerable width.

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Section: Introductionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Analysis of Deflection and Cracking of Concrete Beams with Non-Metallic Reinforcement

Kosior‐Kazberuk

Krassowska

2019

System Safety: Human - Technical Facility - Environment

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“…The flexural testing of single span basalt fiber reinforced concrete beam showed a complex cracking pattern and load-displacement character [1,2,3]. Meanwhile, slip between basalt rebar and concrete for certain circumstances can be observed experimentally [1]. In case of multi-span basalt rebar reinforced concrete plate there are observed bending moment redistribution and highly non-linear material behavior [4].…”

Section: Introductionmentioning

confidence: 98%

“…The numerical model must take into account the material non-linearity. Experimental investigations shows that, even for the deflections smaller that serviceability limit state, there are observed highly non-linear material behavior [1].…”

Section: Introductionmentioning

confidence: 99%

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Nonlinear Numerical Modelling of Basalt Rebar Reinforced Concrete Structures

Šliseris

Gaile

Pakrastiņš

et al. 2017

ETR

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The ever increasing tendency of more complex architecture and increasing use of basalt fibers in concrete, mainly due to corrosion resistance, requires a suitable, accurate and computationally efficient numerical method for modelling of mechanical behavior. A novel numerical modelling methodology for basalt fiber reinforced concrete structures is proposed. In this paper, the main focus is on modelling concrete beams with basalt longitudinal rebars and steel shear rebars. The proposed method is based on two step simulation method. On the first step a database of flexural stiffness depending on stress-strain state is created using non-linear simulations with continuum finite elements. The database of flexural stiffness is used in second step by performing nonlinear beam finite element simulation of frame structures. The numerical method showed good agreement with experimental results. The use of pre-computed database of flexural stiffness significantly accelerate non-linear simulations and whole building can analyzed by taking into account material non-linearity.

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The effect of FRP prestressing on the fatigue performance of strengthened RC beams

Garcez

Meneghetti

Teixeira

2019

Structural Concrete

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Although Fiber Reinforced Polymer (FRP) prestressing is widely recognized for enhancing the serviceability conditions of strengthened structural elements, there are no available fatigue prediction models encompassing the specificities and advantages of FRP prestressing. In this context, this paper addresses the effect of FRP prestressing on the fatigue performance of strengthened reinforced concrete (RC) beams through the assessment of experimental data, constant life diagrams, and the adjustment of specific stress versus number of cycle (S‐N) curves for RC strengthened with prestressed FRP. First, data obtained through the development of an experimental program give an insight into the long‐term behavior of full‐scale beams subjected to in‐service and severe fatigue loading conditions. Fatigue life prediction models based on the adjustment of S‐N curves are developed using an extensive database of failure data and runouts of fatigue tests. Finally, data of fatigue tests plotted in a constant life diagram evidence the combined effects of stress range, mean stress, R ratio, and reinforcing steel properties on the fatigue life of RC beams strengthened with prestressed FRP. Results highlight the positive effects of FRP prestressing by the improvement of serviceability condition under static loading and the increasing of endurance limit under cyclic loading.

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Experimental study of concrete beams prestressed with basalt fiber reinforced polymers. Part I: Flexural behavior and serviceability

Cited by 44 publications

References 15 publications

Analysis of Deflection and Cracking of Concrete Beams with Non-Metallic Reinforcement

Analysis of Deflection and Cracking of Concrete Beams with Non-Metallic Reinforcement

Nonlinear Numerical Modelling of Basalt Rebar Reinforced Concrete Structures

The effect of FRP prestressing on the fatigue performance of strengthened RC beams

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