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High corrosion resistance reinforced concrete corrosion inhibitor

A technology of reinforced concrete and rust inhibitor, which is applied in the field of steel rust inhibitor, and can solve the problems of small adsorption force and insufficient binding force

Inactive Publication Date: 2011-06-01
李丽
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Studies have shown that the adsorption force between small molecule amino alcohols and steel bars is relatively small, and further experimental studies have shown that both diethylenetriamine and 1,4-butynediol have small adsorption forces between steel bars, and combined force is not strong enough

Method used

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  • High corrosion resistance reinforced concrete corrosion inhibitor
  • High corrosion resistance reinforced concrete corrosion inhibitor
  • High corrosion resistance reinforced concrete corrosion inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: a kind of high anti-corrosion reinforced concrete anticorrosion agent, the optimal combination weight percentage of each composition is

[0015] Sodium molybdate 0.08%, sodium dodecylsulfonate 0.12%, thiourea 0.3%, cerium nitrate 0.04%, and the rest is water.

[0016] All components are soluble in water. When mixing and making concrete, add them to the mixer according to the order of adding raw materials, but when adding water, add each rust inhibitor component into water to dissolve according to the requirements in the formula.

Embodiment 2

[0017] Embodiment 2: a kind of high anti-corrosion reinforced concrete anticorrosion agent, the optimal combination weight percentage of each composition is

[0018] Sodium molybdate 0.06%, sodium dodecylsulfonate 0.03%, thiourea 0.45%, cerium nitrate 0.12%, and the rest is water.

[0019] All components are soluble in water. When mixing and making concrete, add them to the mixer according to the order of adding raw materials, but when adding water, add each rust inhibitor component into water to dissolve according to the requirements in the formula.

Embodiment 3

[0020] Embodiment 3: a kind of high anti-corrosion reinforced concrete anticorrosion agent, the optimal combination weight percentage of each composition is

[0021] Sodium molybdate 0.10%, sodium dodecylsulfonate 0.12%, thiourea 0.45%, cerium nitrate 0.12%, and the rest is water.

[0022] All components are soluble in water. When mixing and making concrete, add them to the mixer according to the order of adding raw materials, but when adding water, add each rust inhibitor component into water to dissolve according to the requirements in the formula.

[0023] The present invention adopts four-factor three-level orthogonal test formula, selects four-factor three-level orthogonal test. The tables are as follows. Table 1 shows the rust-inhibiting components of the four factors, and their respective three addition levels.

[0024] Table 1 Factor level table

[0025]

[0026] The left side of Table 2 reflects the design of the four-factor three-level orthogonal experiment, an...

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Abstract

The invention relates to a high corrosion resistance reinforced concrete corrosion inhibitor added with rare earth cerium ion, which comprises the following components in percentages by weight: 0.06-0.10% of sodium molybdate, 0.03-0.12% of sodium dodecyl sulfate, 0.25-0.45% of thiocarbamide, 0.03-0.12% of cerous nitrate and the balance of water. Each component is soluble in water, when the concrete is stirred, each component is added into a stirring device sequentially according to the adding sequence of the raw materials, but when water is added, each component is added in water to dissolve according to the requirement in the formulation. According to the invention, the corrosion of reinforcement in the reinforced concrete can be slowed down or restricted, the high corrosion resistance reinforced concrete corrosion inhibitor has the characteristics of high absorption force of the corrosion inhibitor and high corrosion inhibiting property, and is environment-friendly, the corrosion of reinforcement in the reinforced concrete can be inhibited effectively, especially the high corrosion resistance reinforced concrete corrosion inhibitor has great significance on the coastal reinforced concrete structures and the reinforced concrete structures having higher requirements on chloridion ion corrosion resistance.

Description

technical field [0001] The invention relates to a steel bar rust inhibitor, in particular to a highly anti-corrosion steel bar concrete rust inhibitor added with rare earth cerium ions. Background technique [0002] Reinforced concrete structure has the characteristics of easy material source, low price, strong and durable, and has become the most commonly used building structure in modern life. With the rapid development of my country's economic construction, the problems brought by it are becoming more and more obvious, especially the corrosion of reinforced concrete. The damage caused by chemical changes and electrochemical interactions between the metal surface and the surrounding medium is called metal corrosion. If this damage occurs on the steel bar, it is steel bar corrosion. When the cement clinker particles are hydrated, a large amount of calcium hydroxide will be formed, so the concrete has a protective effect on the steel bars. In this highly alkaline environm...

Claims

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Application Information

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IPC IPC(8): C04B24/16
CPCC04B40/0039
Inventor 李丽邢士波许斌李晓刚董超芳王建民王胜海王英臣王庆东
Owner 李丽
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