Abstract
An experimental investigation on chloride diffusion in structural concrete under the cyclic impact loading is conducted. Effects of magnitudes and loading times are studied. Relationship between damage coefficients and chloride diffusion coefficients is obtained. The cyclic impact loading causes the initiation of new cracks and the propagation of existing cracks, which brings an obvious promotion for chloride diffusion. There should be a damage threshold. If the magnitude of the external loading is large enough to make the damage exceed the threshold, initiation and propagation of cracks become quite significant and chloride diffusion can be greatly promoted. With the increase of the damage coefficient, the chloride diffusion coefficient increases. The increasing rates decrease with long immersion times. Relationship curves of damage coefficients and chloride diffusion coefficients show a good correlation and can be well described with power functions.
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This work was supported by the Shanghai SASAC Special support fund for technological innovation and level upgrading of enterprises.
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Zhu, Py., Zheng, Yl., Luo, Wb. et al. Experimental Study on Chloride Diffusion in Structural Concrete considering the Effect of Damages Induced by the Cyclic Impact Loading. KSCE J Civ Eng 24, 187–194 (2020). https://doi.org/10.1007/s12205-020-0477-4
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DOI: https://doi.org/10.1007/s12205-020-0477-4