Green and high-efficiency rust inhibitor for reinforced concrete

Abstract

The invention discloses a green and high-efficiency rust inhibitor for reinforced concrete. The green and high-efficiency rust inhibitor is characterized by being prepared from the following components: 0.15g / L to 0.25g / L of sodium molybdate, 0.8g / L to 1.2g / L of sulfourea, 4ml / L to 6mL / L of tetraethylenepentamine and 12mL / L to 17mL / L of phytic acid. The sodium molybdate and the sulfourea have a corrosion inhibition effect after being compounded; further, a formed precipitation film can make up a defect that the sodium molybdate forms a passive film; thus, a complete and compact protecting filmlayer is formed on the surface of a steel bar; generation and continuing of corrosion are inhibited; sulfur existing in a molecule of the sulfourea is combined with an atom Fe; the corrosion of the Fe is directly inhibited; a covered area of the surface of carbon steel is increased; the corrosion inhibition effect is enhanced. The tetraethylenepentamine can form an adsorption film on the surfaceof metal; the erosion of a chloride ion is inhibited, and meanwhile, a molybdate-radical ion can be used for enabling the passive film to become more compact.

Description

technical field [0001] This invention studies the corrosion of steel bars in reinforced concrete. It is a kind of anti-corrosion agent mixed into the concrete simulation liquid, and then the influence of the anti-corrosion agent on the corrosion of steel bars is studied, and the best formula of molybdenum series anti-corrosion agent is obtained by compound optimization, and the research of molybdate, thiourea and tetraethylene It is a kind of green and high-efficiency reinforced concrete rust inhibitor with antirust effect of pentamine system. Background technique [0002] The steel bars in reinforced concrete form an organic whole by holding and anchoring with the concrete, give full play to their respective mechanical properties, and bear the skeleton structure of the entire building. Normally, steel bars in reinforced concrete structures are not susceptible to corrosion due to the protective effect of concrete on the steel bars. However, when the protective layer of con...

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Problems solved by technology

However, when the protective layer of concrete is damaged and some steel bars are exposed or due to incomplete derusting of steel bars during construction, steel bar corrosion is very likely to occur, resulting in hidden dangers of accidents.

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