Experiencia en la monitorización de la corrosión in situ en estructuras de hormigón: posibles mejoras en el método de resistencia a la polarización controlada por corriente
DOI:
https://doi.org/10.3989/mc.2021.11221Palabras clave:
Hormigón, Armadura de acero, Corrosión, DurabilidadResumen
La necesidad de realizar un mantenimiento proactivo de las estructuras de hormigón armado mediante técnicas no destructivas (NDT) es ya un hecho. Una estrategia de interés es la medida de velocidad de corrosión de las armaduras in-situ. El objetivo de este trabajo es realizar un estudio sobre la fiabilidad del método de confinamiento modulado de la corriente (MCC). Para ello se realiza una revisión de las medidas realizadas in situ con dicho método en diferentes estructuras reales a lo largo de 13 años. Las principales problemáticas detectadas son un deficiente confinamiento de la corriente de polarización en situaciones de baja resistividad y una polarización excesiva de las armaduras en estado pasivo. Para incrementar la fiabilidad del método MCC, se identifica la necesidad de mejorar la metodología actual de regulación y control de corrientes. Partiendo de los inputs de este trabajo, estamos ya trabajando en mejoras de los próximos corrosímetros.
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