A device and method for measuring the corrosion distribution characteristics of steel bar surface

Abstract

The invention relates to a device and a method for measuring distribution characteristics of surface rusting of a steel bar. The device comprises a base (1), a steel bar to be measured (2) and a laser distance measurement device (5), wherein a laser sensing head of the laser distance measurement device (5) moves up and down, front and back and left and right on the base (1) through a movement device; the steel bar to be measured (2) is fixedly arranged on the base (1) through a clamping device; the laser distance measurement device (5) is connected with a computer (10). According to the device and the method, comprehensive and automatic testing of distribution positions and sizes and depth conditions of surface rusting pits of steel bars with different types, different diameters and different rusting degrees can be realized; evidences can be provided for evaluating steel bar rusting conditions in a steel reinforced concrete structure.

Description

technical field [0001] The invention relates to a device and method for measuring the distribution characteristics of corrosion pits on the surface of corroded steel bars by using a laser distance measuring device. The device and method are suitable for evaluating the performance of reinforced concrete structures. Background technique [0002] Reinforced concrete is widely used in various modern engineering constructions. However, during the perennial operation of the structure, due to the characteristics of the material itself and the influence of the use environment, the steel bars will be corroded and the performance of the material will be degraded, resulting in a reduction in the structural bearing capacity and durability. The reliability of the structure The performance (safety, serviceability and durability) is seriously threatened, so the assessment of the corrosion condition of steel bars is becoming more and more important. [0003] Corrosion will lead to a reducti...

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Problems solved by technology

[0002] Reinforced concrete is widely used in various modern engineering constructions. However, during the perennial operation of the structure, due to the characteristics of the material itself and the influence of the use environment, the steel bars will be corroded and the performance of the material will be degraded, resulting in a reduction in the structural bearing capacity and durability. The reliability of the structure The performance (safety, serviceability and durability) is seriously threatened, so the assessment of the corrosion condition of steel bars is becoming more and more important

[0003] Corrosion will lead to a reduction in the cross-sectional area of ​​the steel bar, a decrease in the bond between the steel bar and the concrete, and a decrease in the bearing capacity and deformation performance of the component; on the other hand, the corrosion products can cause the concrete to crack, thereby further aggravating the corrosion of the steel bar, forming a vicious circle

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