Portable determining device and portable determining method for corrosion rate of steel bar

Abstract

The invention discloses a portable determining device and a portable determining method for corrosion rate of a steel bar. The portable determining device comprises a steel bar fixing system, a steel bar heating system, a temperature control system and a thermal imaging scanning system, wherein the steel bar fixing system comprises a base and a steel bar sleeve; the steel bar sleeve is fixed on the base; a steel bar plug is arranged in the steel bar sleeve; the steel bar heating system comprises a heating device I and a protecting cover; the heating device I is arranged on the inner wall of the steel bar sleeve; the protecting cover is arranged outside the first heating device; the surface of the first heating device is covered with an insulating layer; the temperature control system comprises a temperature sensing strip, a temperature control switch and a temperature recorder; the temperature sensing strip is locally embedded in the insulating layer I; the temperature control switch and the temperature recorder are connected with the temperature sensing strip; the thermal imaging scanning system comprises a heat-insulating sleeve arranged on the exterior of the steel bar sleeve in a sleeving manner, a bar-shaped thermal imaging instrument arranged on the inner wall of the steel bar sleeve and a computer connected with the thermal imaging instrument. The portable determining device disclosed by the invention adopts a thermal imaging technique for determining the corrosion rate of the steel bar, is detachable and portable, is high in determining precision and is capable of directly reflecting the corrosion form of the steel bar and the variation trend of the corrosion rate.

Description

technical field [0001] The invention relates to the measurement of the corrosion rate of steel bars, in particular to a portable measuring device and method for the corrosion rate of steel bars, and belongs to the technical measuring device in the field of reinforced concrete building materials. Background technique [0002] In the field of modern civil engineering, reinforced concrete structures are currently the most commonly used building structures in the world. Reinforced concrete has become the most widely used building material. However, due to concrete carbonation and chloride corrosion, steel bars are prone to rust. Corrosion of steel bars in reinforced concrete members is one of the main causes of premature failure of structures. Steel bar corrosion reduces the safety and durability of structures, leading to different degrees of durability problems in concrete structures: such as concrete cracking, internal steel bars Corrosion, freeze-thaw cycle, alkali-aggregate ...

AI Technical Summary

Problems solved by technology

[0002] In the field of modern civil engineering, reinforced concrete structure is currently the most commonly used building structure in the world. Reinforced concrete has become the most widely used building material. However, due to concrete carbonation and chloride corrosion, steel bars are prone to rust.

Corrosion of steel bars in reinforced concrete members is one of the main causes of premature failure of structures. Corrosion of steel bars reduces the safety and durability of structures, resulting in different degrees of durability problems in concrete structures: such as concrete cracking, internal reinforcement Corrosion, freeze-thaw cycles, alkali-aggregate reaction, etc. reduce the bearing capacity and service life of the structure, causing structural durability failure

However, the device is huge and inconvenient to carry; and the measurement of the corrosion rate by buoyancy is essentially still to measure the mass to calculate the corrosion rate, which cannot reflect the situation of the steel bar section; in addition, the measurement of the corrosion rate still requires simple treatment of the steel bar such as brushing away concrete residue and Pickling cannot be fully automated, and it is not convenient and concise enough

[0009] In summary, there is no satisfactory measuring device and measuring method for the corrosion rate of steel bars in the prior art

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