CN105236792A - Composite reinforcement rust-resistant agent and application thereof - Google Patents
Composite reinforcement rust-resistant agent and application thereof Download PDFInfo
- Publication number
- CN105236792A CN105236792A CN201510528109.7A CN201510528109A CN105236792A CN 105236792 A CN105236792 A CN 105236792A CN 201510528109 A CN201510528109 A CN 201510528109A CN 105236792 A CN105236792 A CN 105236792A
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- steel bar
- corrosion inhibitors
- nitrite
- compound corrosion
- concrete
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- Curing Cements, Concrete, And Artificial Stone (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention discloses a composite reinforcement rust-resistant agent. The composite reinforcement rust-resistant agent is characterized by being prepared by uniformly mixing nitrite and ethanolamine in a mass ratio of (5-15):1, and purities of the nitrite and the ethanolamine are more than or equal to 99 percent. The composite reinforcement rust-resistant agent has the advantages of performing repairing, forming a compact passive film on an anode to stop the corrosion reaction of the anode, acting on a cathode and forming an insoluble film on a cathode to stop the corrosion reaction of the cathode. The composite reinforcement rust-resistant agent has a relatively good rust-resistant effect on reinforcing steel bars and has a relatively low cost.
Description
Technical field
The present invention relates to the reinforcing steel bar corrosion inhibitor for skeleton construction, particularly relate to a kind of compound corrosion inhibitors for steel bar and application thereof.
Background technology
Skeleton construction is current field of civil engineering purposes structured material the most widely, but the existence of chlorion can make reinforcing bar get rusty, concrete cracking.Chlorion in skeleton construction enters mainly through two kinds of approach: one is from concrete raw material, and as mixing water, extra large sand, deicer salts, salt fog and villaumite admixture etc., two is from environment for use, as bridge harbour is in ocean environment etc.Reinforcing steel bar corrosion inhibitor kind is in the market more, but great majority are anode rust inhibitor or negative electrode rust inhibitor, and not only action effect is single, and price comparison is expensive.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of resistance and embroiders effect better and lower-cost compound corrosion inhibitors for steel bar and application thereof.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of compound corrosion inhibitors for steel bar, the ratio uniform that it is 5 ~ 15:1 by nitrite and ethanolamines in mass ratio mixes, and the purity of described nitrite and described ethanolamines is all more than or equal to 99%.
Described nitrite is calcium nitrite, Sodium Nitrite, potassium nitrite or lithium nitrite.
Described ethanolamines is Monoethanolamine MEA BASF, diethanolamine or trolamine.
Described a kind of compound corrosion inhibitors for steel bar, the ratio uniform being 9.25 ~ 12.35:1 in mass ratio by described Sodium Nitrite and described diethanolamine mixes, and the purity of described Sodium Nitrite and described diethanolamine is all more than or equal to 99%.
The described application of a kind of compound corrosion inhibitors for steel bar in concrete, described compound corrosion inhibitors for steel bar adds in concrete by inner blending method, and the incorporation of described compound corrosion inhibitors for steel bar is 4 ~ 5% of the quality of gelatinous material in concrete.
The described application of a kind of compound corrosion inhibitors for steel bar in concrete, enters in skeleton construction on the outer surface being coated in skeleton construction or by low-pressure injection after described compound corrosion inhibitors for steel bar is dissolved into rust inhibitor saturated aqueous solution.
Compared with prior art, advantage of the present invention is that this compound corrosion inhibitors for steel bar can be repaired and at the closely knit passive film of anodic formation, block the corrosion reaction of anode, negative electrode can be acted on again, by forming the film of indissoluble at negative electrode, block the corrosion reaction of negative electrode, its resistance to reinforcing bar rust effect is better, and cost is lower.
Accompanying drawing explanation
Fig. 1 is the resistance rust design sketch of compound corrosion inhibitors for steel bar of the present invention to the reinforcing bar in concrete.
Embodiment
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
Embodiment one: a kind of compound corrosion inhibitors for steel bar, the ratio uniform that it is 15:1 by calcium nitrite and Monoethanolamine MEA BASF in mass ratio mixes, and wherein, the purity of calcium nitrite and Monoethanolamine MEA BASF is all more than or equal to 99%.
Embodiment two: a kind of compound corrosion inhibitors for steel bar, the ratio uniform that it is 7:1 by potassium nitrite and trolamine in mass ratio mixes, and wherein, the purity of potassium nitrite and trolamine is all more than or equal to 99%.
Embodiment three: a kind of compound corrosion inhibitors for steel bar, the ratio uniform that it is 10:1 by lithium nitrite and diethanolamine in mass ratio mixes, and wherein, the purity of lithium nitrite and diethanolamine is all more than or equal to 99%.
Embodiment four: a kind of compound corrosion inhibitors for steel bar, the ratio uniform being 9.25:1 in mass ratio by Sodium Nitrite and diethanolamine mixes, and the purity of its Sodium Nitrite and diethanolamine is all more than or equal to 99%.
Embodiment five: a kind of compound corrosion inhibitors for steel bar, the ratio uniform being 12.35:1 in mass ratio by Sodium Nitrite and diethanolamine mixes, and the purity of its Sodium Nitrite and diethanolamine is all more than or equal to 99%.
Embodiment six: a kind of compound corrosion inhibitors for steel bar, the ratio uniform being 11.5:1 in mass ratio by Sodium Nitrite and diethanolamine mixes, and the purity of its Sodium Nitrite and diethanolamine is all more than or equal to 99%.
Add in concrete by the compound corrosion inhibitors for steel bar of above-described embodiment four and embodiment five respectively by inner blending method, it is specifically filled a prescription and is: gelling material 20 weight part, river sand 40 weight part, water 17.1 weight part, compound corrosion inhibitors for steel bar 1 weight part; Respectively the test of resistance rust is carried out to the reinforcing bar in concrete, obtain inhibition figure as shown in Figure 1, as can be seen from the figure, when the mass ratio of Sodium Nitrite and diethanolamine is 9.25:1, compound corrosion inhibitors for steel bar almost suppresses corrosion completely, and when the mass ratio of Sodium Nitrite and diethanolamine is 12.35:1, compound corrosion inhibitors for steel bar can be completely antirust at 12 weeks, resistance rust effect reaches best.
Above-mentioned compound corrosion inhibitors for steel bar in actual applications, except inner blending method, also first compound corrosion inhibitors for steel bar can be dissolved into rust inhibitor saturated aqueous solution, then enter in skeleton construction on the outer surface being coated in skeleton construction or by low-pressure injection.
Claims (6)
1. a compound corrosion inhibitors for steel bar, it is characterized in that the ratio uniform that it is 5 ~ 15:1 by nitrite and ethanolamines in mass ratio mixes, the purity of described nitrite and described ethanolamines is all more than or equal to 99%.
2. a kind of compound corrosion inhibitors for steel bar as claimed in claim 1, is characterized in that described nitrite is calcium nitrite, Sodium Nitrite, potassium nitrite or lithium nitrite.
3. a kind of compound corrosion inhibitors for steel bar as claimed in claim 2, is characterized in that described ethanolamines is Monoethanolamine MEA BASF, diethanolamine or trolamine.
4. a kind of compound corrosion inhibitors for steel bar as claimed in claim 3, the ratio uniform that to it is characterized in that by described Sodium Nitrite and described diethanolamine be 9.25 ~ 12.35:1 in mass ratio mixes, and the purity of described Sodium Nitrite and described diethanolamine is all more than or equal to 99%.
5. the application of a kind of compound corrosion inhibitors for steel bar as claimed in claim 1 in concrete, it is characterized in that described compound corrosion inhibitors for steel bar adds in concrete by inner blending method, the incorporation of described compound corrosion inhibitors for steel bar is 4 ~ 5% of the quality of gelatinous material in concrete.
6. the application of a kind of compound corrosion inhibitors for steel bar as claimed in claim 1 in concrete, enters in skeleton construction on the outer surface being coated in skeleton construction or by low-pressure injection after it is characterized in that described compound corrosion inhibitors for steel bar is dissolved into rust inhibitor saturated aqueous solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510528109.7A CN105236792A (en) | 2015-08-25 | 2015-08-25 | Composite reinforcement rust-resistant agent and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510528109.7A CN105236792A (en) | 2015-08-25 | 2015-08-25 | Composite reinforcement rust-resistant agent and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105236792A true CN105236792A (en) | 2016-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201510528109.7A Pending CN105236792A (en) | 2015-08-25 | 2015-08-25 | Composite reinforcement rust-resistant agent and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113200699A (en) * | 2021-05-24 | 2021-08-03 | 中山大学 | Composite migration rust inhibitor applied to surface and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2170495A (en) * | 1984-12-14 | 1986-08-06 | Nissan Chemical Ind Ltd | Cement accelerator |
| CN101289293A (en) * | 2008-06-13 | 2008-10-22 | 北京工业大学 | Polycarboxylic acids anti-freeze agent for cement concrete and method for preparing same |
| CN102320771A (en) * | 2010-08-04 | 2012-01-18 | 浙江五龙化工股份有限公司 | Reinforced concrete rust inhibitor |
| CN103708761A (en) * | 2013-12-23 | 2014-04-09 | 宁波中水科化工科技有限公司 | Early-strength type polycarboxylate superplasticizer and preparation method thereof |
-
2015
- 2015-08-25 CN CN201510528109.7A patent/CN105236792A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2170495A (en) * | 1984-12-14 | 1986-08-06 | Nissan Chemical Ind Ltd | Cement accelerator |
| CN101289293A (en) * | 2008-06-13 | 2008-10-22 | 北京工业大学 | Polycarboxylic acids anti-freeze agent for cement concrete and method for preparing same |
| CN102320771A (en) * | 2010-08-04 | 2012-01-18 | 浙江五龙化工股份有限公司 | Reinforced concrete rust inhibitor |
| CN103708761A (en) * | 2013-12-23 | 2014-04-09 | 宁波中水科化工科技有限公司 | Early-strength type polycarboxylate superplasticizer and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 柳俊哲等: "亚硝酸根在混凝土中扩散及防锈年限预测", 《武汉理工大学学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113200699A (en) * | 2021-05-24 | 2021-08-03 | 中山大学 | Composite migration rust inhibitor applied to surface and preparation method thereof |
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Application publication date: 20160113 |