Abstract:The percolation structure of concrete is characterized by four parameters, i.e. the hydraulic radius r h, the tortuosity T , the resistance of charge transfer R ct and the capacitance of double layer C . From the change of these parameters with time, the hydration process of cement paste and concrete can be learned. Upon adding mineral blend to concrete, the percolation structure will change from which the function of mineral blend in the concrete can be learned.