Investigation and Improvement of Bond Performance of Synthetic Macro-Fibres in Concrete

Garnevičius, Mantas; Plioplys, Linas; Ng, P.L.; Chu, Sharon Lynn; Gribniak, Viktor

doi:10.3390/ma13245688

Cited by 9 publications

(7 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The commercial software Atena helps analyze deformation response and predict the load-bearing capacity of the hybrid beam; the material models verified in the previous works 1 , 7 , 31 describe the mechanical behavior of PFRC and FRP components. The tetrahedral mesh generates the finite element (FE) model, shown in Fig.…”

Section: Results—the Hybrid Beam Conceptmentioning

confidence: 96%

“…In such a way, the concrete provides a reliable connection with the GFRP profile on the supports. In addition, FE modeling checks the proposed concept’s viability when the smeared reinforcement approach 7 describes the mechanical performance of FRP components, the physically nonlinear material model 31 defines the PFRC behavior, and the perfect bond model represents the contact problem.…”

Section: Results—the Hybrid Beam Conceptmentioning

confidence: 99%

“…The Non-Linear Cementitious material model with 55 MPa compressive strength 31 determines the deformation behavior and failure mechanism of PFRC. An elastic-plastic model (elasticity modulus = 170 GPa and tensile strength = 2.8 GPa) determines the material behavior of the 10 × 1.4 mm CFRP strip 1 .…”

Section: Results—the Hybrid Beam Conceptmentioning

confidence: 99%

See 2 more Smart Citations

Developing a hybrid FRP-concrete composite beam

Garnevičius

Gribniak

2022

Sci Rep

Self Cite

View full text Add to dashboard Cite

Current materials engineering trends put forward the development of efficient structural solutions. The steel replacement with fiber-reinforced polymers (FRP) exemplifies the key to the corrosion problem. However, the relatively low deformation modulus of typical FRP materials raises the deformations of the structural components. Together with the self-weight reduction increasing the kinematic displacements, the latter issue makes developing hybrid structures comprising compression-resistant concrete and high-performance in tension FRP profiles important. Although such hybrid systems are applicable for bridge engineering, the uncertainty of the inter-component bonding properties complicates developing these innovative structures, including the design models. The typical solution focuses on the local bond improvement, e.g., employing FRP profile perforation and mechanical anchorage systems. However, this study introduces an alternative solution, using the stress-ribbon bridge structural system for creating the hybrid beam prototype, which combines the synthetic fiber-reinforced concrete slab and pultruded FRP profile fixed on the supports. This work exemplifies the structural development concept when the finite element (FE) modeling outcome defines the target reference of the design procedure. Thus, on the one hand, this innovative structure simplifies the corresponding numerical (FE) model, which assumes the perfect bond between the components of the hybrid beam system. On the other hand, the solution to the support problem (resulting from a low resistance of pultruded FRP profiles to transverse loads) improves the structural performance of the bridge prototype, doubling the structure’s flexural stiffness and load-bearing capacity regarding the weak concrete supports’ system. The bending tests proved the adequacy of this solution in describing the design reference for further development of the proposed structural concept.

show abstract

Section: Results—the Hybrid Beam Conceptmentioning

confidence: 96%

Section: Results—the Hybrid Beam Conceptmentioning

confidence: 99%

See 1 more Smart Citation

Developing a hybrid FRP-concrete composite beam

Garnevičius

Gribniak

2022

Sci Rep

Self Cite

View full text Add to dashboard Cite

show abstract

“…An efficient balance between the prediction accuracy and computation time characterizes the developed FE approach that does not require specific descriptions of reinforcement geometry and refined meshes necessary for modeling the discrete fibers (Garnevičius et al, 2020). The ATENA software also allows smearing the reinforcement in different directions to represent the complex fiber architecture (the "Finite Element Model" section).…”

Section: Numerical Model Reliabilitymentioning

confidence: 99%

An Efficient Approach to Describe the Fiber Effect on Mechanical Performance of Pultruded GFRP Profiles

et al. 2021

Self Cite

View full text Add to dashboard Cite

This study focuses on the flexural behavior of pultruded glass fiber-reinforced polymer (GFRP) profiles developed for structural applications. Fiber content is a commonly accepted measure for estimating the resistance of such components, and technical datasheets describe this essential parameter. However, its direct implementation to the numerical simulations can face substantial problems because of the limitations of standard test protocols. Furthermore, the fiber mass percentage understandable for producers is unsuitable for typical software considered the volumetric reinforcement content. This manuscript exemplifies the above situation both experimentally and analytically, investigating two GFRP square hollow section (SHS) profiles available at the market. A three-point bending test determines the mechanical performance of the profiles in this experimental program; a digital image correlation system captures deformations and failure mechanisms of the SHS specimens; a standard tensile test defines the material properties. A simplified finite element (FE) model is developed based on the smeared reinforcement concept to predict the stiffness and load-bearing capacity of the profiles. An efficient balance between the prediction accuracy and computation time characterizes the developed FE approach that does not require specific descriptions of reinforcement geometry and refined meshes necessary for modeling the discrete fibers. The proposed FE approach is also used to analyze the fiber efficiency in reinforcing the polymer matrix. The efficiency is understood as the model’s ability to resist mechanical load proportional to the dry filaments’ content and experimental elastic modulus value. Scanning electron microscopy relates the composite microstructure and the mechanical performance of the selected profiles in this study.

show abstract

“…The nonlinear simulations are carried out using the finite element (FE) software Atena V5.9 [ 22 ]. This software is well acknowledged in a broad field related to the structural application of cement-based and fibrous composites and high-strength steel [ 23 , 24 , 25 , 26 , 27 ]. The deformation problem was formulated based on the incremental constitutive law of materials.…”

Section: Numerical Simulationsmentioning

confidence: 99%

Analysing the Confinement Effect in Hollow Core Steel-Concrete Composite Columns under Axial Compression

Šapalas

Mudrov

2021

Materials

View full text Add to dashboard Cite

Spun concrete technology allows manufacturing the reinforced concrete poles, piles, and columns with a circular hollow core. This concreting method ensures higher concrete density and strength than the traditional vibration technique and self-compacting concrete. This technology defines an attractive alternative for producing steel-concrete composite elements, allowing efficient utilisation of the materials due to the confinement effect. This study experimentally investigates the material behaviour of the composite columns subjected to axial compression. The experimental results support the above inference—the test outcomes demonstrate the 1.2–2.1 times increase of the compressive strength of the centrifugal concrete regarding the vibrated counterpart; the experimental resistance of the composite columns 1.25 times exceeds the theoretical load-bearing capacity. The proposed mechanical-geometrical parameter can help to quantify the composite efficiency. The parametric analysis employs the finite element model verified using the test results. It demonstrates a negligible bond model effect on the deformation prediction outcomes, indirectly indicating the steel shell confinement effect and confirming the literature results.

show abstract

Investigation and Improvement of Bond Performance of Synthetic Macro-Fibres in Concrete

Cited by 9 publications

References 41 publications

Developing a hybrid FRP-concrete composite beam

Developing a hybrid FRP-concrete composite beam

An Efficient Approach to Describe the Fiber Effect on Mechanical Performance of Pultruded GFRP Profiles

Analysing the Confinement Effect in Hollow Core Steel-Concrete Composite Columns under Axial Compression

Contact Info

Product

Resources

About