EMBEDDED SENSOR FOR THE CONTINUOUS MEASUREMENT OF MECHANICAL RESISTANCE IN STRUCTURES MADE FROM CEMENTITIOUS MATERIAL, METHOD FOR PRODUCING THE SENSOR, AND SYSTEM AND METHOD FOR THE CONTINUOUS MEASUREMENT OF MECHANICAL RESISTANCE IN STRUCTURES MADE FROM CEMENTITIOUS MATERIALS

摘要

The invention relates to a sensor for the continuous measurement of mechanical resistance in a structure made from cementitious material. The invention also relates to two measurement systems using the aforementioned sensor: a continuous measurement system based on an electromagnetic induction effect, and a continuous measurement system based on a magnetic inductance effect, as well as to the measurement method of each system and a method for the production of the sensor. The sensor is embedded directly, as a simple additional aggregate, in a structure made from cementitious material, preferably concrete, such as to allow the internal mechanical stress/deformation state of the structure to be measured continuously without affecting the structure or its stress state. The sensor comprises a block of cementitious material in which a magnetic microwire is embedded, said magnetic microwire comprising a ferromagnetic core and an insulating glass sheath.