Method for preparing novel steel bar rust resistant agent

Abstract

The invention relates to a novel steel bar rust resistant agent, and belongs to the technical field of building materials. The steel bar rust resistant agent is characterized by comprising the following raw materials in percentage by weight: 10 to 20 percent of alkamine (ethanolamine and one of N-methyl ethanolamine, triethanolamine, p-hydroxy cyclohexylamine), 5 to 15 percent of ammonium benzoate, 10 to 15 percent of nanometer methyl potassium silicate, 1 to 5 percent of citric acid and the balance of water. A method for preparing the steel bar rust resistant agent comprises the following steps of: weighing the raw materials according to a formula, and mixing and stirring uniformly to obtain the novel steel bar rust resistant agent. The rust resistant agent with a rust resistant function and the nanometer methyl potassium silicate combine and are sprayed on the surface of steel bars directly on a steel bar production line to produce an anticorrosive oxidation film at high temperature, so the effective utilization rate of the rust resistant agent is improved, and a rust-resistant function is achieved while the performance of concrete is not influenced. Therefore, the steel bar rust resistant agent retards and blocks the corrosion of the steel bars in the reinforced concrete effectively and has the characteristics of environment friendliness, high adsorptive force and high corrosion resistance.

Description

technical field [0001] The invention relates to a novel rust inhibitor for steel bars, which belongs to the technical field of building materials. Background technique [0002] In the general atmospheric environment, the reduction of concrete alkalinity caused by carbonization is the main reason for the corrosion of steel bars in concrete. Concrete, when the surface of the steel bar reaches a certain concentration, even if the alkalinity of the concrete does not decrease, the steel bar will rust. [0003] The current antirust components are passivators and oxide protective film repair agents, which can promote the formation of a layer of γ-Fe on the surface of steel bars. 2 o 3 or Fe 3 o 4 It is mainly composed of oxide passivation film to repair the defects on the surface of the steel bar, so that the whole steel bar is wrapped by a layer of oxide passivation film, the density and stability are very good, it can prevent the penetration of chloride ions, and reduce the f...

AI Technical Summary

Problems solved by technology

But its cohesiveness is the key issue of this technology. When spalling and cracks occur, it will even speed up the pitting corrosion of steel bars

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