Performance of engineered fibre reinforced concrete (EFRC) under different load regimes: A review

Khalel, Hamad; Khan, Muhammad Ali; Starr, Andrew; Khan, Kamran A.; Asif, Muhammad

doi:10.1016/j.conbuildmat.2021.124692

Cited by 18 publications

(5 citation statements)

References 204 publications

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“…Ordinary concrete cannot be used because of its potential to lose durability and structural integrity when subjected to high temperature. However, FRC has better elastic and bending strength and can withstand damage, including spalling and separation, when reinforced with other kinds of fibers, such as steel, polypropylene and glass (Khalel et al 2021). The methods by which these reinforcing fibers support the mechanical integrity of concrete in high-temperature environments will be examined in the future, offering insights into the suitability of these materials for use in hazardous environments such as nuclear power plants, fire-resistant buildings and industrial furnaces (Zhao et al 2023).…”

Section: Mechanical Performance Of Frcmentioning

confidence: 99%

Fiber-reinforced concrete in high-temperature environments: In-depth survey on mechanical performance and rheological features

Singh,

Batra,

Nagappan

et al. 2024

Multidiscip. Rev.

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The successful automatic performance of fiber-reinforced concrete (FRC) has led to its widespread application; adding fibers affects its novel properties. It is anticipated that concrete's long-term qualities will be impacted by its workability. A comprehensive assessment of the mechanical performance and rheological properties of FRC is given in this study. It presents more detail on how the FRC behaves in searching temperatures and provides an analysis of several heating as well as cooling methods along with the way they affect test outcomes. The study explores how reinforcing fibers, aggregates and substitute materials affect FRC's fire resistance. In particular, the concept of workability, which is a crucial quality in concrete, is studied and rheological models that make use of several rheometers are developed to clarify the rheological behavior of FRC. Several techniques to improve rheological functionality and performance are revealed in this study. The findings highlight the conflicting characteristics of fibers that can enhance the mechanical aspects of cement while reducing its fresh and rheological qualities. A comparable set of benefits and drawbacks complement FRC's fluidity. The research examines feasible approaches to regulate the rheological characteristics of FRC, thereby simplifying and improving the mechanical performance and workability of FRC.

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Section: Mechanical Performance Of Frcmentioning

confidence: 99%

Fiber-reinforced concrete in high-temperature environments: In-depth survey on mechanical performance and rheological features

Singh,

Batra,

Nagappan

et al. 2024

Multidiscip. Rev.

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“…On the other hand, fibers, as well as nanoparticles, can improve the thermal and mechanical properties of concrete [9][10][11][12]. Basalt fiber has several advantages.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the thermal capacity of cement-based thermal energy storage components. A case study

Ortiz-Vasquez,

Endrino,

Roque

et al. 2024

J. Phys.: Conf. Ser.

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In this paper, we evaluate the heat capacity performance of cement-based heat exchangers for thermal energy storage and analyze their structural integrity under elevated temperatures. Fluid flow is modeled using the Navier-Stokes equations, conservation of mass, and energy. The response of the cement-based material is modeled considering thermomechanical coupling, obtaining the temperature profile within the thermal energy storage. This study allows us to observe the thermal energy storage capabilities for different thermal energy storage designs: plain concrete and concrete with nanoparticles of SiO2. Finally, we use our model for the evaluation of the concrete thermal energy storage component, which has been previously functionalized for use in low to medium temperature ranges (i.e., 100 °C to 400 °C).

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“…This is better for structures working under compressive loads. However, in applications where structures are under bending or tension, it is deemed necessary to reinforce concrete with materials that can provide the required ductility and not reduce the most needed compressive strength [ 3 , 4 , 5 ]. Due to this reason, academic and industrial domain researchers have used fibres of small sizes with good flexural and tensile properties as a constituent of concrete [ 4 , 6 , 7 , 8 , 9 , 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

“…However, in applications where structures are under bending or tension, it is deemed necessary to reinforce concrete with materials that can provide the required ductility and not reduce the most needed compressive strength [ 3 , 4 , 5 ]. Due to this reason, academic and industrial domain researchers have used fibres of small sizes with good flexural and tensile properties as a constituent of concrete [ 4 , 6 , 7 , 8 , 9 , 10 , 11 ]. In the past, steel fibres (SF) were added to recycled aggregate concrete (RAC) and demonstrated an increase in tensile strength, elastic modulus, and post-cracking behaviour [ 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Modelling Fibre-Reinforced Concrete for Predicting Optimal Mechanical Properties

Khalel

Khan

2023

Materials

Self Cite

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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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Performance of engineered fibre reinforced concrete (EFRC) under different load regimes: A review

Cited by 18 publications

References 204 publications

Fiber-reinforced concrete in high-temperature environments: In-depth survey on mechanical performance and rheological features

Fiber-reinforced concrete in high-temperature environments: In-depth survey on mechanical performance and rheological features

Evaluation of the thermal capacity of cement-based thermal energy storage components. A case study

Modelling Fibre-Reinforced Concrete for Predicting Optimal Mechanical Properties

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