Interdigital capacitance-type sensor for detecting corrosion of Q235 carbon steel

Abstract

The invention discloses an interdigital capacitance-type sensor for detecting corrosion of Q235 carbon steel, and relates to the technical field of sensors. The interdigital capacitance-type sensor comprises an acrylic plate layer, a comb-like electrode layer, a hot melt adhesive cover, an acrylic adhesive layer, a positive wire hole, a negative wire hole, a positive single-core copper wire and anegative single-core copper wire, the comb-like electrode layer is arranged on the upper end face of the acrylic plate layer, the hot melt adhesive cover is arranged outside the comb-like electrode layer, and the acrylic plate layer and the comb-like electrode layer are connected through the acrylic adhesive layer; and the comb-like electrode layer comprise a positive comb-like electrode and a negative comb-like electrode, and the positive comb-like electrode and the negative comb-like electrode penetrate through each other to constitute a cross structure. By adopting the technical scheme, theinterdigital capacitance-type sensor has the beneficial effects that the advantages that the situation of early corrosion of the Q235 carbon steel in concrete can be detected, and durability is goodare achieved, and large-scale production and multi-point arrangement of large-scale reinforced concrete structures are facilitated.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to an interdigitated capacitive sensor for detecting corrosion of Q235 carbon steel. Background technique [0002] Reinforced concrete has excellent tensile and compressive properties and is one of the most commonly used construction materials in civil engineering structures such as bridges, buildings, tunnels, and dams. These reinforced concrete structures are expected to be used safely for decades or even centuries. Unfortunately, due to the influence of internal material factors and external environmental factors, the durability of reinforced concrete structures is reduced, which eventually leads to serious safety risks and major economic losses. Among them, the corrosion of steel bars is one of the important factors leading to the performance degradation and destruction of reinforced concrete structures. [0003] In the past few decades, scholars at home and abroad have propos...

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Problems solved by technology

However, the absorption of guided wave energy by the concrete surface results in large attenuation and short propagation distances

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