Device and method for testing corrosion macro current of reinforcing steel bar inside concrete

Abstract

The invention discloses a device and a method for testing corrosion macro current of a reinforcing steel bar inside concrete. multiple grooves are disposed inside an insulation base, each of the grooves is provided with a steel block, two ends of the bottom of each of the grooves are each provided with a hole, a spring piece is embedded inside each of the holes, the spring pieces at both ends of each of the grooves clamp the two ends of the steel blocks, and non-contact exists between the two adjacent steel blocks; and each of the spring pieces is connected to a lead, the leads connected withone end of each of the grooves are uniformly connected to a male end of a connecting terminal A, the leads connected with the other end of each of the grooves are uniformly connected to a female end of the connecting terminal A, positive and negative poles of a micro-ampere ammeter are respectively connected to male and female ends of a connecting terminal B, when corrosion current measurement isperformed, the male end of the connecting terminal A is connected to the female end of the connecting terminal B, the female end of the connecting terminal A is connected to the male end of the connecting terminal B, each of micro-ampere ammeters is in series connection with to a loop, so that one micro-ampere ammeter is configured between the two adjacent steel blocks. The device and the method are simple and convenient to manufacture.

Description

technical field [0001] The invention belongs to the technical field of steel bar corrosion rate detection in reinforced concrete structures of civil engineering, and in particular relates to a device and method for testing steel bar corrosion macrocurrent inside concrete. Background technique [0002] Due to its good performance and low cost, reinforced concrete structures are widely used in the field of civil engineering. With the construction of a large number of reinforced concrete structures, premature failure of reinforced concrete structures due to insufficient structural design resistance or adverse changes in external loads occurs, most of which are caused by insufficient structural durability. The durability problems of reinforced concrete structures mainly include carbonation, chloride salt action, freeze-thaw effect, alkali-aggregate reaction, etc. Among them, the chloride salt action is the most serious hazard to steel-concrete structures. The intrusion of chlor...

AI Technical Summary

Problems solved by technology

The intrusion of chloride ions leads to a decrease in the pH value inside the concrete, the destruction of the passivation film on the surface of the steel bar, and the accelerated corrosion of the steel bar, which leads to the deterioration of the performance of the concrete structure and affects the normal use of the structure

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