Multiscale modelling framework for elasticity of ultra high strength concrete using nano/microscale characterization and finite element representative volume element analysis

Thilakarathna, P.S.M.; Baduge, Shanaka Kristombu; Mendis, Priyan; Lee, H.; Chandrathilaka, E.R.K.; Vimonsatit, Vanissorn

doi:10.1016/j.conbuildmat.2022.126968

Cited by 12 publications

(8 citation statements)

References 86 publications

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“…As for another example of the validation process, the analytical MT homogenization method and the FE approach were implemented to compare the results obtained in this study with those of the multi-scale framework presented by Thilakarathna et al 28 . The thri-phasic mesoscale RVE comprising coarse aggregates, mortar matrix, and voids was modeled accordingly.…”

Section: Verificationmentioning

confidence: 99%

“…The pore size of 2–5 mm was also considered. Table 13 summarizes the elastic properties at mesoscale based on Thilakarathna et al 28 . According to the elastic modulus results obtained in Table 14 , the python programming homogenization exercised in this study is by 3% different than that of the analytical MT homogenization reported by Thilakarathna et al 28 .…”

Section: Verificationmentioning

confidence: 99%

“…Table 13 summarizes the elastic properties at mesoscale based on Thilakarathna et al 28 . According to the elastic modulus results obtained in Table 14 , the python programming homogenization exercised in this study is by 3% different than that of the analytical MT homogenization reported by Thilakarathna et al 28 . Also, the elastic modulus of the RAC obtained in this study via Digimat is 6% higher than that estimated by the FE approach in the literature.…”

Section: Verificationmentioning

confidence: 99%

“…Table 13. RAC properties at mesoscale, Thilakarathna et al 28 . www.nature.com/scientificreports/ containing steel fibers at volume fractions of 0.5, 1, and 1.5%, as reported in Table 16.…”

Section: Macroscale Modeling Verificationmentioning

confidence: 99%

“…Xu et al 27 presented unified models to predict the compressive behavior of confined and unconfined RAC. Thilakarathna et al 28 investigated the elastic modulus and Poisson’s ratio of NAC based on FE modeling and homogenization theory. Subsequently, the predictions of the random distribution meso-model of fiber-reinforced concrete were compared with the macroscopic experimental values.…”

Section: Introductionmentioning

confidence: 99%

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A comprehensive quantitative bottom-up analysis of fiber-reinforced recycled-aggregate concrete behavior

Hosseinzadeh

Dehestani

Samadvand³

2023

Sci Rep

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This study provides a more profound understanding of the influence of the phases of fiber-reinforced recycled-aggregate concrete (FRRAC), on its elastic properties, in particular Young’s modulus and Poisson’s ratio. Multi-scale modeling analyses of mortar and FRRAC were conducted to assess the effect of variations in the fiber content, fiber elastic modulus, RA content, and water-to-cement ratio (w/c) on the elastic properties at each scale. Thus, the analytic Mori–Tanaka (MT) homogenization algorithm developed in Python programming language and the three-dimensional finite element (FE) homogenization scheme were applied to evaluate the elastic properties of FRRAC. As such, different fiber types including steel, basalt, glass, and propylene, at a volume fraction range of 0–2%, along with the variations in fiber elastic modulus, and different RA replacement levels ranging from 0 to 100% were incorporated in the modeling process at different w/c ratio. Based on the results, the Poisson’s ratio of steel FRRAC in the MT approach surges with increasing fiber content. Furthermore, the elastic modulus of FRRAC is highly susceptible to an increase in Young’s modulus of polypropylene fiber, among other fiber types. The elastic modulus of concrete experiences a sharp decrease with increasing w/c for all fiber types in both FE and MT approaches.

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Section: Verificationmentioning

confidence: 99%

Section: Verificationmentioning

confidence: 99%

Section: Verificationmentioning

confidence: 99%

“…Table 13. RAC properties at mesoscale, Thilakarathna et al 28 . www.nature.com/scientificreports/ containing steel fibers at volume fractions of 0.5, 1, and 1.5%, as reported in Table 16.…”

Section: Macroscale Modeling Verificationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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