Variable Strain Ductility Ratio for Fiber-Reinforced Polymer-Confined Concrete

Moran, Domingo A.; Pantelides, Chris P.

doi:10.1061/(asce)1090-0268(2002)6:4(224)

Cited by 32 publications

(7 citation statements)

References 18 publications

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“…Recently, some models for predicting the axial stress and strain of FRP-confined concrete were suggested based on numerical method or plasticity analysis (e.g. Shahawy et al 2000;Karabinis, Rousakis 2001;Moran, Pantelides 2002;Becque et al 2003;Malvar et al 2004), whereas these models are often not suitable for direct use in design.…”

Section: Axial Strain Of Frp-confined Concretementioning

confidence: 99%

The Confinement of Concrete in Compression Using CFRP Composites – Effective Design Equations

Benzaid

Mesbah

2014

Journal of Civil Engineering and Management

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This paper presents the results of an experimental study on the behaviour of axially loaded short concrete columns, with different cross sections that have been externally strengthened with carbon fibre-reinforced polymer (CFRP) sheets. Six series, forming the total of 60 specimens, were subjected to axial compression. All the test specimens were loaded to failure in axial compression and investigated in both axial and transverse directions. According to the obtained test results, FRP-confined specimen failure occurs before the FRP reached the ultimate strain capacities. Thus, the failure occurs prematurely and the circumferential failure strain is lower than the ultimate strain obtained from the standard tensile testing of the FRP composite. In existing models for FRP-confined concrete, it is commonly assumed that the FRP ruptures when the hoop stress in the FRP jacket reaches its tensile strength from either flat coupon tests, which is herein referred to as the FRP material tensile strength. This phenomenon considerably affects the accuracy of the existing models for FRP-confined concrete. On the basis of the effective lateral confining pressure of the composite jacket and the effective circumferential FRP failure strain, new equations were proposed to predict the strength of FRP-confined concrete and corresponding strain for each of the cross section geometry used, circular and square. The estimations given by these equations were compared with the experimental ones and general conclusions were drawn.

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Section: Axial Strain Of Frp-confined Concretementioning

confidence: 99%

The Confinement of Concrete in Compression Using CFRP Composites – Effective Design Equations

Benzaid

Mesbah

2014

Journal of Civil Engineering and Management

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“…According to the 96% of the empirical results that are related to the most desirable theory predictions (Table 6 and Figure 9), it could be concluded that the presented method (AlexNet‐ElM‐ARFO) is the most reliable and accurate method. The linear correlation of the current analytic methods, the proposed model is better than in comparison to the, [ 49–52 ] that demonstrates the higher

{R^2}

.…”

Section: Comparing the Analytical Models And International Codesmentioning

confidence: 92%

The Compressive Strength Prediction for FRP‐Confined Concrete in Circular Columns by Applying the Normalized AlexNet‐ELM and the Advanced Red Fox Optimization Algorithm

Cui

Zhao

et al. 2022

Advcd Theory and Sims

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Fiber Reinforced Polymers (FRP) can be widely utilized in civil engineering because of their helpful features like high corrosion resistance for aggressive surroundings and high strength to weight ratio. By providing a lateral confining pressure, the concrete compressive strength is increased. Giving an analytic model that can forecast the FRP strength is the purpose of this study. This model is according to the normalized AlexNet Extreme Learning Machine and the Advanced Red Fox Optimization Algorithm (AlexNet‐ELM‐ARFO). The AlexNet‐ELM‐ARFO algorithm's innovation includes a formulation of an analytic relation, which doesn't attend to the established effectiveness parameter that is in the models introduced in the literature. An extended empirical dataset is utilized for defining the suggested formulation's variables. The suggested model is applied to circular columns including continuous FRP. The predictions’ validation is shown by parametric research and the precision is examined by an empirical against theoretic comparison. A supplementary comparison is demonstrated with consideration of the theoretic prediction gained from the given method and the formulations’ results using significant design codes. Outcomes prove that the used method is adapted to the FRP‐confined concrete design and ensures an improved precision in comparison with respect to the available competitors.

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“…al. investigated the reinforcing effect of lignocellulosic fibres, incorporating flax, hemp and wood, on the mechanical properties of Bionolle, an aliphatic polyester [44]. The use of acetic anhydride treatment of the fibres was proven not to be as effective for improving the matrix tensile strength, compared with other techniques such as compatibilisation; however it did reduce the water absorption of the fibres.…”

Section: Esterification Of Natural Fibresmentioning

confidence: 99%

Fiber-Reinforced Polymers

2020

Encyclopedia of Continuum Mechanics

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Variable Strain Ductility Ratio for Fiber-Reinforced Polymer-Confined Concrete

Cited by 32 publications

References 18 publications

The Confinement of Concrete in Compression Using CFRP Composites – Effective Design Equations

The Confinement of Concrete in Compression Using CFRP Composites – Effective Design Equations

The Compressive Strength Prediction for FRP‐Confined Concrete in Circular Columns by Applying the Normalized AlexNet‐ELM and the Advanced Red Fox Optimization Algorithm

Fiber-Reinforced Polymers

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