A carbon nanotube detection device for corrosion of steel bars in reinforced concrete components

Abstract

The invention relates to a carbon nano tube detection device of reinforcement corrosion of a reinforced concrete member, and belongs to durability detection and evaluation of reinforced concrete structures in the field of structure engineering. The carbon nano tube detection device of the reinforcement corrosion of the reinforced concrete member comprises a semi-cylindrical body reinforced bar the material of which is the same as that of reinforcing steel used for engineering, a carbon nano tube film sensitive grid, a protective layer and a detector, wherein the carbon nano tube film sensitive grid is fixed on the reinforced bar; the protective layer is sprayed on the carbon nano tube film sensitive grid connected with the detector through a lead. The carbon nano tube detection device of the reinforcement corrosion of the reinforced concrete member has the beneficial effects that a carbon nano tube detecting device has the characteristics of high flexibility, high anti-interference capability, good stability and rapid strain response rate, is capable of measuring repeatedly and the like, can effectively monitor the corrosion penetration of the reinforcement steel bars, and can evaluate whether the reinforcement steel bars are in depassivation and the corrosion generation degree quantitatively, thereby judging the durability of reinforced concrete structures caused by external environment, such as carbonization and chloride ion erosion.

Description

technical field [0001] The invention relates to a carbon nanotube detection device for steel bar corrosion in reinforced concrete members, which belongs to the durability detection and evaluation of reinforced concrete structures in the field of structural engineering. Background technique [0002] Corrosion of steel bars has become the main cause of durability degradation and service life decline of reinforced concrete structures. Research and development of sensing systems that can reasonably and timely reflect the corrosion status of steel bars inside concrete is of great significance for the durability assessment and diagnosis of structures and the judgment of steel bar corrosion status. It provides important guidance for monitoring the service life of concrete, ensuring project safety and reducing maintenance costs significance. [0003] Carbon nanotube (CNT) is a high-quality one-dimensional nanomaterial. It is connected by hexagonal carbon rings and curled to form a ...

AI Technical Summary

Problems solved by technology

For the field of civil engineering, carbon nanotubes have been used to make strain sensors to detect the stress of key parts of the structure, and other researches have rarely been reported.

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