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    Study on Carbonation Damage Constitutive Curve and Microscopic Damage Mechanism of Tailing Recycled Concrete

    Tao Li1,2,*, Sheliang Wang2, Fan Xu2,*, Binbin Li3, Bin Dang1, Meng Zhan4, Zhiqi Wang5

    Journal of Renewable Materials, Vol.9, No.8, pp. 1413-1432, 2021, DOI:10.32604/jrm.2021.012744

    Abstract To improve the resource utilization of recycled aggregate concrete (RAC) and make use of the unique pozzolanic activation characteristics of iron ore tailing (IOT), the constitutive curves of tailing recycled concrete (TRC) before and after carbonization were analyzed theoretically, experimentally and microscopically. Firstly, according to the experimental data, the damage constitutive and related damage parameters of TRC were theoretically established by Weibull probability distribution function. Secondly, the comprehensive damage parameter b under different working conditions was studied. Finally, the damage mechanism was formed by EDS and SEM. The results showed that the damage constitutive model based on Weibull probability distribution… More >

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