Chloride ion concentration detection device of reinforced concrete structure and nondestructive testing method thereof

Abstract

The invention discloses a chloride ion concentration detection device of a reinforced concrete structure and a nondestructive testing method thereof. The device comprises detection single units (1) and a direct current power supply, wherein a stainless steel plate (3) is arranged in each detection single unit; a cover plate (2) of each detection single unit, a water-proof protective housing (1) and the surface of the reinforced concrete structure (4) form a closed cavity; electrolyte solution is injected into the cavity; the stainless steel plate (3) is also positioned in the cavity; a negative electrode of the direct current power supply is connected with reinforcement (4.1) of the reinforced concrete structure (4), and a positive electrode of the direct current power supply is connected with the stainless steel plate (3) of each detection single unit through a wire; the key point of the method is that the chlorine ion concentrations at different time points correspond to the chlorine ion concentrations of different depths of the reinforced concrete structure (4). According to the device and the method, the chlorine ion concentrations of different depths of the reinforced concrete structure (4) can be effectively detected, the detection process is convenient, and structural damage is not caused.

Description

Technical field [0001] The invention relates to the field of coastal reinforced concrete durability testing, in particular to a chloride ion concentration detection device and a nondestructive testing method for reinforced concrete structures such as bridge piers, caps or wharfs. Background technique [0002] Coastal reinforced concrete structures are located in harsh corrosive environments such as sea water and ocean climate, and there are a large amount of chloride ions that are corrosive to steel bars. Therefore, whether the engineering life span can meet the hundred-year requirements that people expect in design is a very serious problem. Not only in China, but worldwide, due to insufficient durability of concrete structures, huge economic losses are caused every year. [0003] The process of chloride ions infiltrating into concrete gradually penetrates from the surface to the inside. When chloride ions penetrate into the inner layer where the steel bars of the reinforced concr...

AI Technical Summary

Problems solved by technology

The disadvantages of this detection method are obvious. First, the detection process must be drilled first, which is labor-intensive, time-consuming and laborious, and very inconvenient; moreover, the key point is that the drilling-type detection method will cause structural damage and damage to it.

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