【摘 要】
：
To evaluate the effect of pulse parameters on the formation of electrodeposits in concrete cracks, five different types of pulse current were set up, and ZnSO4 and MgSO4 solutions were used as the electrolytes. The rate of weight gain, rate of surface coa
【机 构】
：
College of Mechanics and Materials, Hohai University, Nanjing 210098, China;Nanjing Hydraulic Resear
【出 处】
：
武汉理工大学学报（材料科学版）（英文版）
论文部分内容阅读
To evaluate the effect of pulse parameters on the formation of electrodeposits in concrete cracks, five different types of pulse current were set up, and ZnSO4 and MgSO4 solutions were used as the electrolytes. The rate of weight gain, rate of surface coating, rate of crack closure and crack filling depth were measured. Scanning electron microscopy was used to assess the morphology of the electrodeposits, and energy dispersive spectroscopy was used to analyze the mineral composition of the electrodeposits in the cracks. The experimental results demonstrate that, among five different pulse parameters, when Ton/Toff=0.8 ms/0.8 ms, the healing effect of electro-deposition is the best. The pulse mode hardly affects the mineral composition of the electrodeposits but changes the micromorphology. In addition, for both ZnSO4 and MgSO4 solutions, when Ton/Toff=0.8 ms/0.8 ms, the crystal structure of the electrodeposits is the most uniform and the densest.
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