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The effect of micro-structural uncertainties of recycled aggregate concrete on its global stochastic properties via finite pixel-element Monte Carlo simulation

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Abstract

In this paper, the effect of micro-structural uncertainties of recycled aggregate concrete (RAC) on its global stochastic elastic properties is investigated via finite pixel-element Monte Carlo simulation. Representative RAC models are randomly generated with various distribution of aggregates. Based on homogenization theory, effects of recycled aggregate replacement rate, aggregate volume fraction, the unevenness of old mortar, proportion of old mortar, aggregate size and elastic modulus of aggregates on overall variability of equivalent elastic properties are investigated. Results are in a good agreement with experimental data in literature and finite pixel-element method saves the computation cost. It is indicated that the effect of mesoscopic randomness on global variability of elastic properties is considerable.

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Acknowledgements

This work is sponsored by the National Natural Science Foundation of China (Grant Nos. 10972162 and 51325802). This support is gratefully acknowledged.

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Authors and Affiliations

  1. Department of Structural Engineering, College of Civil Engineering, Tongji University, Shanghai, 200092, China

    Qingpeng Meng, Yuching Wu & Jianzhuang Xiao

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  1. Qingpeng Meng
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  2. Yuching Wu
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  3. Jianzhuang Xiao
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Correspondence to Yuching Wu.

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Meng, Q., Wu, Y. & Xiao, J. The effect of micro-structural uncertainties of recycled aggregate concrete on its global stochastic properties via finite pixel-element Monte Carlo simulation. Front. Struct. Civ. Eng. 12, 474–489 (2018). https://doi.org/10.1007/s11709-017-0442-6

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  • DOI: https://doi.org/10.1007/s11709-017-0442-6

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