Method for identifying concrete corrosion damage by using implantable piezoelectric sensor

The invention belongs to the technical field related to concrete structure health monitoring, and discloses a method for identifying concrete corrosion damage by an implantable piezoelectric sensor. The identification method comprises the following steps: S1, packaging a piezoelectric sensor, then putting the piezoelectric sensor as aggregate into concrete to be identified, and vibrating and curing the concrete; s2, excitation voltages are introduced into the piezoelectric sensors before and after the concrete serves, resonance is generated between the piezoelectric sensors and the to-be-recognized concrete, admittance signals in the piezoelectric sensors are collected, and therefore the conductance values of the concrete before and after the concrete serves are obtained; and S3, calculating an MAPD damage index by using the conductivity values of the concrete before and after service so as to identify the corrosion damage of the concrete. According to the invention, the influence of water on sensor admittanc