粉煤灰
水泥
材料科学
电化学
介电谱
抗压强度
复合材料
冶金
化学工程
化学
电极
工程类
物理化学
作者
Jianchao Zhang,Biqin Dong,Shuxian Hong,Xiaojuan Teng,Li Gui,Weiwen Li,Luping Tang,Feng Xing
标识
DOI:10.1016/j.conbuildmat.2019.06.046
摘要
Fly ash is an industrial by-product that is widely used in the cement industry. Traditional methods used to investigate the influence of fly ash on the hydration behavior of cement are destructive and cannot accomplish a continuous tracing of the hydration process. In this study, the influence of fly ash incorporation on the hydration process of cement is evaluated using measured electrochemical data obtained from the electrochemical impedance spectroscopy approach. A novel equivalent circuit model that considers the electrochemical characteristics of cement during the hydration process is proposed to investigate the electrochemical property of the blended cement. The resistance parameter of the model, Rct1, was found to have a positive correlation with hydration degree and compressive strength during hydration. With this parameter, the method can be used to non-destructively trace and characterize the effects of fly ash incorporation on the cement hydration process.
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