A kind of environmentally friendly reinforced concrete rust inhibitor and its application

Abstract

The invention provides an environment-friendly reinforced concrete corrosion inhibitor and application thereof. The environment-friendly reinforced concrete corrosion inhibitor is prepared from, by mass, 0.05-2.0% of sodium molybdate, 0.1-1.0% of zinc sulfate, 0.1-1.5% of triethanolamine and the balance water. Inhibitors of different types are compounded, and the synergistic effect among the inhibitors of different types is brought into play. The environment-friendly reinforced concrete corrosion inhibitor mainly contains sodium molybdate, triethanolamine and zinc sulfate, has a good corrosion inhibition effect on rebars, and will not reduce compressive strength of concrete; the corrosion inhibitor is low in toxicity, free of pollution and suitable for reinforced concrete structures in water conservancy, railways and civil architecture and does not harm the human body or the environment.

Description

technical field [0001] The invention relates to a rust inhibitor, in particular to an environment-friendly reinforced concrete rust inhibitor and application thereof. Background technique [0002] The use of rust inhibitors to delay the corrosion of steel bars is an important measure to improve reinforced concrete structures. There are many varieties of rust inhibitors, including inorganic rust inhibitors such as nitrite and borate, and organic rust inhibitors such as fatty acid ammonium salts and phosphate esters. Although there are many varieties of rust inhibitors, the effects of different varieties of rust inhibitors are quite different. Inorganic nitrite rust inhibitors, currently occupying an important position in the mixed-type rust inhibitors, have good rust inhibitory effects, but when the dosage is insufficient, the corrosion of steel bars will be accelerated, and there is a great risk of use, and has obvious Carcinogenicity has considerable harm to the human bod...

AI Technical Summary

Problems solved by technology

The above research results show that molybdate, zinc salt, etc. have a certain corrosion inhibition effect on the corrosion of steel sheets, but these studies have not considered the influence of corrosion inhibitors on the performance of concrete, that is, they lack the effectiveness of corrosion inhibitors in reinforced concrete. Basis; Chinese patent (98104716.5) contains phosphate compounds, which can cause eutrophication of rivers and lakes, and are restricted during use

[0004] According to existing reports, some corrosion inhibitors for steel bars have obvious corrosion inhibition effect on steel bars, but they will cause a sharp drop in the compressive strength of concrete; some corrosion inhibitors have problems such as short action time, and it is difficult to obtain practical application

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