A device and method for testing corrosion macrocurrent of steel reinforcement inside concrete

Abstract

The invention discloses a device and method for testing the corrosion macrocurrent of steel bars inside concrete. There are multiple grooves in the insulating base, and a steel block is installed in each groove. There is a hole at both ends of the bottom of each groove. Embedded with a spring piece, the spring pieces at both ends of the groove clamp the two ends of the steel block, and there is no contact between two adjacent steel blocks; each spring piece is connected to a wire, and the wire connected to one end of the slot is connected to the terminal The male head of A, and the wires from the other end of the slot are connected to the female head of terminal A, and the positive and negative poles of the microamperemeter are respectively connected to the male and female ends of terminal B. When measuring the corrosion current, connect the wiring The male head of terminal A is connected to the female head of terminal B, the female head of terminal A is connected to the male head of terminal B, and the microampere ammeters are connected in series in the circuit, so that a microampere ammeter is arranged between two adjacent steel blocks. Ammeter. The device of the invention is simple and convenient to manufacture.

Description

technical field [0001] The invention belongs to the technical field of corrosion rate detection of steel bars in reinforced concrete structures of civil engineering, and particularly relates to a device and a method for testing the corrosion macro current of steel bars in 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 large-scale construction of reinforced concrete structures, premature failures of reinforced concrete structures due to insufficient structural design resistance or unfavorable changes in external loads have appeared in large numbers. Most of the structural failures are caused by insufficient structural durability. The durability problems of reinforced concrete structures mainly include carbonation, chloride salt effect, freeze-thaw effect, alkali-aggregate reaction, etc. Among them, chloride salt effect is the most serious harm to steel...

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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