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- W4366245951 abstract "This article introduces simulations of theoretical material with controlled properties for the evaluation of the effect of key parameters, as volumetric fractions, elastic properties of each phase and transition zone on the effective dynamic elastic modulus (Ed). The accuracy level of classical homogenization models was checked regarding the prediction of Ed. Numerical simulations were performed with finite element method (FEM) for evaluations of the natural frequencies and their correlation with Ed, through frequency equations. An acoustic test validated the numerical results and obtained the elastic modulus of concretes and mortars at 0.3, 0.5 and 0.7 water-cement ratios (w/c). Hirsch calibrated according to the numerical simulation (x = 0.27) exhibited a realistic behavior for concretes of w/c = 0.3 and 0.5, with 5% error. Nevertheless, for w/c = 0.7, Ed approached Reuss model, similarly to theoretical triphasic materials. Hashin-Shtrikman bounds is not perfectly applied to theoretical biphasic materials under dynamic situations." @default.
- W4366245951 created "2023-04-20" @default.
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- W4366245951 date "2023-04-18" @default.
- W4366245951 modified "2023-09-25" @default.
- W4366245951 title "Numerical Modeling of the Dynamic Elastic Modulus of Concrete" @default.
- W4366245951 doi "https://doi.org/10.20944/preprints202304.0521.v1" @default.
- W4366245951 hasPublicationYear "2023" @default.
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