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

Abstract

[EN] 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.

[ES] Sensor para la medida continua de resistencias mecánicas en una estructura de material cementicio. Otro objeto de la invención se refiere a dos sistemas de medida que emplean dicho sensor: un sistema de medida continua basado en un efecto de inducción electromagnética, y otro sistema de medida continua basado en un efecto de magnetoinductancia, así como el método de medida de cada sistema y un método de fabricación de dicho sensor. Elsensor se embebe directamente, como un simple agregado más, en una estructura de material cementicio, preferentemente hormigón, de modo que permite medir el estado de tensión mecánica/deformación interno de dicha estructura de material cementicio de forma continua y sin afectar a su estructura ni su estado de tensión. El sensor comprende un bloque de material cementicio en el que está embebido un microhilo magnético donde dicho microhilo magnético comprende un núcleo ferromagnético y un revestimiento aislante de vidrio.