Abstract
A Legendre polynomial-based stochastic micromechanical framework is proposed to quantify the unbiased probabilistic behavior for the unsaturated concrete repaired by the electrochemical deposition method (EDM). By following the authors’ previous works, a deterministic micromechanical model with new multilevel homogenization scheme for the repaired unsaturated concrete is presented based on the material’s microstructures. With the stochastic descriptions for the microstructures of the repaired unsaturated concrete, the deterministic framework is extended to stochastic. The unbiased probabilistic behavior of the repaired concrete is reached by incorporating the Legendre polynomial approximations and the Monte Carlo simulations. The predictions herein are then compared with the available experimental data, existing models and the commonly used probability density functions, which indicate that the presented stochastic micromechanical framework is capable of characterizing the EDM healing process for unsaturated concrete considering the material’s random microstructure. Finally, the statistical effects of the deposition products and unsaturated pores are discussed.
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Acknowledgements
This work was supported by National Key Research and Development Plan (2018YFC0705400). This work was also supported by the National Natural Science Foundation of China (51508404, 51478348, 51278360, 51308407, U1534207), the 1000 Talents Plan Short-Term Program by the Organization Department of the Central Committee of the CPC, the Funds of Fundamental Research Plan for the Central Universities.
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Chen, Q., Liu, X.Y., Zhu, H.H. et al. Legendre polynomial-based stochastic micromechanical model for the unsaturated concrete repaired by EDM. Arch Appl Mech 90, 1267–1283 (2020). https://doi.org/10.1007/s00419-020-01663-w
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DOI: https://doi.org/10.1007/s00419-020-01663-w