Pre-embedded reference electrode for monitoring corrosion of reinforced concrete, and manufacturing method

Abstract

The invention discloses a pre-embedded reference electrode for monitoring corrosion of reinforced concrete. The pre-embedded reference electrode comprises a copper cable, a sleeve, a gel electrolyte, an electrode body, a microporous ceramic block, a protective jacket, a post-activation sealing component, a water-absorbing expansion layer and a post-activation sealing component dissolution mortar; the post-activation sealing component is arranged outside a medium transmission end of the existing reference electrode to block the medium transmission between the internal electrolyte and concrete in the earlier period, the water-absorbing expansion layer is filled between the microporous ceramic of the medium transmission end of the reference electrode and the post-activation sealing component so as to fill up the gap after the post-activation sealing component is dissolved, so that the good transmission of medium can be guaranteed. The service life of the reference electrode is remarkably prolonged by adopting a later activation method, and the monitoring on the whole life cycle of the reinforced concrete corrosion state can be realized. The invention further discloses a manufacturing of the pre-embedded reference electrode for monitoring the corrosion of reinforced concrete.

Description

technical field [0001] The invention relates to a reference electrode, in particular to a pre-embedded reference electrode for corrosion monitoring of reinforced concrete, belonging to the technical field of corrosion and protection of reinforced concrete structures. Background technique [0002] The corrosion of steel bars caused by the intrusion of chloride ions is the main reason for the decline in the durability of concrete structures, which seriously threatens the service safety of concrete structures. Therefore, real-time monitoring and detection of the corrosion status of steel bars in concrete structures is carried out. Knowing the corrosion rate and corrosion degree of steel bars is of great significance for us to evaluate the service safety and remaining service life of concrete structures. The corrosion of steel bars caused by chloride ion intrusion is mainly electrochemical corrosion, and the reference electrode is the core component of the real-time monitoring a...

AI Technical Summary

Problems solved by technology

Although the service life of the reference electrode is significantly improved by the use of solid electrolytes, its service life is still less than 20 years, and it is still unable to meet the full life cycle monitoring of the corrosion state of steel bars. The service life of the reference electrode has become a key technical bottleneck restricting steel bar corrosion monitoring

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