Fracture modeling of fiber reinforced concrete in a multiscale approach

Congro, Marcello; Mejia, Cristian; Roehl, Deane; Marangon, Ederli

doi:10.1016/j.compositesb.2019.106958

Cited by 31 publications

(8 citation statements)

References 26 publications

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“…The cement-concrete composite stands as the dominant material in engineering worldwide, favoured for its superior qualities and cost e ciency [17], [18]. Despite its intricate multi-component nature, various processes, and detailed speci cations, the production methodology for concrete is relatively straightforward, as documented in several references [19], [20], [21], [22], [23]. In concrete, aggregates-both ne and coarse-occupy a signi cant volume, ranging from 60-75%, playing a pivotal role in de ning its physical and mechanical properties [24].…”

Section: Introductionmentioning

confidence: 99%

Advancing sand concrete sustainability: transforming quarry waste into high-quality crushed sand for superior properties

Jaradat,

Shakarna,

Gadri

et al. 2024

Preprint

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This research explores the potential of reusing quarry waste into limestone sand for the eco-friendly production of sand concrete, addressing environmental sustainability. The investigation comprised the preparation of five concrete mixtures with differing limestone sand ratios: 0%, 40%, 50%, 60%, and 70%. To evaluate the impact of limestone sand incorporation, we analysed physical and mechanical characteristics through tests such as density, compressive and flexural strength, Ultrasonic Pulse Velocity, Dynamic elastic modulus, and microstructure examination. Findings indicate substantial enhancements in sand concrete properties due to the integration of limestone sand, with the 60% ratio emerging as the most productive. The study underscores limestone sand's capability to not only improve sand concrete quality but also offer a sustainable method for quarry waste recycling. It demonstrates the beneficial impact of limestone sand used in sand concrete and advocates for its application as a sustainable quarry waste recycling strategy across the construction industry's various sectors.

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Section: Introductionmentioning

confidence: 99%

Advancing sand concrete sustainability: transforming quarry waste into high-quality crushed sand for superior properties

Jaradat,

Shakarna,

Gadri

et al. 2024

Preprint

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“…The polymer reinforced concrete has not been used as a large volume of structural material, for its strength is not so high and its cost is higher than that of ordinary concrete (Dunaj et al 2020;Sokołowska 2020;Wang et al 2021aWang et al , 2021b. Additionally, added alone, fiber can improve the strength and flexibility of concrete greatly, but in this case, there are obvious defects in the transition zone between fiber and matrix, for which most of the fiber is pulled out when the concrete is damaged, indicating that the effect of fiber has not been fully exploited (Congro et al 2019;Rai and Singh 2021;Tsiotsias and Pantazopoulou 2021;Al-Hamrani and Alnahhal 2021). Numerous studies have shown that adding fiber into polymer reinforced concrete can improve the strength of polymer reinforced concrete effectively, and increase its cost effectiveness as well (Wang et al 2020a(Wang et al , 2020bBediwy and El-Salakawy 2021;Lv and Zhang 2021).…”

Section: Introductionmentioning

confidence: 99%

Polymer/Carbon Fiber Co-modification: Dynamic Compressive Mechanical Properties of Carbon Fiber Modified Polymer Reinforced Concrete

Wang,

Bai,

Liu

et al. 2024

ACT

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To explore the dynamic compressive mechanical properties of carbon fiber modified polymer reinforced concrete (CFMPRC), the 100 mm diameter SHPB (Split Hopkinson Pressure Bar) test system was used to carry out impact compression tests of CFMPRC with different carbon fiber volume content (0.1%, 0.2%, 0.3% and 0.4%). The dynamic stress-strain curves and fracture morphology of CFMPRC under different strain rates (37.7 s -1 to 132.2 s -1 ) were obtained, and the effects of strain rate and carbon fiber content on dynamic compressive strength, deformation and toughness of CFMPRC were analyzed. The results show that the dynamic compressive strength, deformation and toughness of CFMPRC have obvious strain rate strengthening effect and carbon fiber strengthening effect. The dynamic compressive strength, dynamic increase factor (DIF), dynamic peak strain and impact toughness of CFMPRC increase with strain rate gradually. The dynamic compressive mechanical properties of polymer reinforced concrete are improved by adding carbon fiber, and the optimal carbon fiber content is 0.2%. When carbon fiber content is 0.2%, the strain rate sensitivity of CFMPRC is the strongest, and the increase of strength is the maximum. Carbon fiber can bridge the internal cracks of concrete, and shows the co-modification effect with polymer. Polymer can enhance the carbon fiber/concrete matrix interface, which makes carbon fiber exert its effect more effectively.

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“…Granulated blast furnace slag was used as a fibre, and the obtained properties were plotted using multivariable linear regression. It was observed that the percentage of fibre by weight significantly impacts compressive strength [ 19 , 20 , 21 , 22 , 23 ]. According to a statistical study, the synergistic effect of the linear term of the R-ratio has a significant impact on early compressive strength [ 24 ].…”

Section: Introductionmentioning

confidence: 99%

Modelling Fibre-Reinforced Concrete for Predicting Optimal Mechanical Properties

Khalel

Khan

2023

Materials

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Fibre-reinforced cementitious composites are highly effective for construction due to their enhanced mechanical properties. The selection of fibre material for this reinforcement is always challenging as it is mainly dominated by the properties required at the construction site. Materials like steel and plastic fibres have been rigorously used for their good mechanical properties. Academic researchers have comprehensively discussed the impact and challenges of fibre reinforcement to obtain optimal properties of resultant concrete. However, most of this research concludes its analysis without considering the collective influence of key fibre parameters such as its shape, type, length, and percentage. There is still a need for a model that can consider these key parameters as input, provide the properties of reinforced concrete as output, and facilitate the user to analyse the optimal fibre addition per the construction requirement. Thus, the current work proposes a Khan Khalel model that can predict the desirable compressive and flexural strengths for any given values of key fibre parameters. The accuracy of the numerical model in this study, the flexural strength of SFRC, had the lowest and most significant errors, and the MSE was between 0.121% and 0.926%. Statistical tools are used to develop and validate the model with numerical results. The proposed model is easy to use but predicts compressive and flexural strengths with errors under 6% and 15%, respectively. This error primarily represents the assumption made for the input of fibre material during model development. It is based on the material’s elastic modulus and hence neglects the plastic behaviour of the fibre. A possible modification in the model for considering the plastic behaviour of the fibre will be considered as future work.

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Fracture modeling of fiber reinforced concrete in a multiscale approach

Cited by 31 publications

References 26 publications

Advancing sand concrete sustainability: transforming quarry waste into high-quality crushed sand for superior properties

Advancing sand concrete sustainability: transforming quarry waste into high-quality crushed sand for superior properties

Polymer/Carbon Fiber Co-modification: Dynamic Compressive Mechanical Properties of Carbon Fiber Modified Polymer Reinforced Concrete

Modelling Fibre-Reinforced Concrete for Predicting Optimal Mechanical Properties

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