CN104211317A - Reinforcing steel bar corrosion inhibiting agent for concrete - Google Patents
Reinforcing steel bar corrosion inhibiting agent for concrete Download PDFInfo
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- CN104211317A CN104211317A CN201410457016.5A CN201410457016A CN104211317A CN 104211317 A CN104211317 A CN 104211317A CN 201410457016 A CN201410457016 A CN 201410457016A CN 104211317 A CN104211317 A CN 104211317A
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- Prior art keywords
- steel bar
- reinforcing steel
- concrete
- bar corrosion
- corrosion inhibitor
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Abstract
The invention relates to a reinforcing steel bar corrosion inhibiting agent for concrete. The reinforcing steel bar corrosion inhibiting agent for the concrete is obtained by uniformly mixing 20-30% of silica fume, 64-78% of superfine coal ash, 1-3% of triethanolamine and 1-3% of N,N-dimethylethanolamine. The reinforcing steel bar corrosion inhibiting agent for the concrete has the advantages that silica fume with large specific surface area is used, compactness of the concrete is improved, pore diameter is reduced, and impermeability of the concrete is improved; meanwhile, triethanolamine is used, so that cement hydration is full, and a structure of an interface transition region is improved; and besides, N,N-dimethylethanolamine is also used, so that destruction of chloride ions on a reinforcing steel bar passivation film is effectively delayed.
Description
Technical field
The present invention relates to a kind of for concrete reinforcing steel bar corrosion inhibitor, belong to the reinforcement of concrete auxiliary agent technical field.
Background technology
Steel bar corrosion affects buildings weather resistance and security, causes the destruction of reinforced concrete structures to become worldwide problem.Cause the major cause of steel bar corrosion to be villaumite, villaumite on the one hand from concrete raw material, as mixing water, extra large sand, anti-cryosel, salt fog and villaumite (or containing villaumite) admixture etc.; On the other hand from environment for use, chlorion can arrive rebar surface through concrete, destroy rebar surface oxide passivation film, when reinforcing bar runs into sodium-chlor ion or sulfate ion corrodes time, reinforcing bar will corrosion aging rapidly, reinforcing bar will irregularly rupture, and concrete also ftractures simultaneously, have impact on the intensity of itself and the quality of whole buildings.
Rust inhibitor kind is in the market more, but the overwhelming majority is nitrite, and nitrite is the chemical that a kind of carinogenicity is strong, if be applied in the structures such as reservoir, and easy polluted-water.
Summary of the invention
The object of the invention is to provide a kind of for concrete reinforcing steel bar corrosion inhibitor.
For achieving the above object, the technical solution used in the present invention is: a kind of for concrete reinforcing steel bar corrosion inhibitor, and described reinforcing steel bar corrosion inhibitor is obtained after mixing by the material of following masses percentage composition;
Silicon ash 20 ~ 30%;
Superfined flyash 64 ~ 78%;
Trolamine 1 ~ 3%;
N, N-dimethylethanolamine 1 ~ 3%.
Preferred technical scheme is: described silicon ash is densified silica fume, and its specific surface area is more than or equal to 20000m
2/ Kg.
Preferred technical scheme is: described flyash is first level flour coal ash, and its surface-area is more than or equal to 700m
2.
Preferred technical scheme is: the purity of described trolamine is more than or equal to 99%.
Preferred technical scheme is: the purity of described N, N-dimethylethanolamine is more than or equal to 99%.
Preferred technical scheme is: described reinforcing steel bar corrosion inhibitor adopts inner blending method to mix in described concrete, and the incorporation of described reinforcing steel bar corrosion inhibitor is 6 ~ 10% of the quality of gelling material in concrete.
Because technique scheme is used, the present invention compared with prior art has following advantages and effect:
The silicon ash that the present invention uses specific surface area large is to improve concrete degree of compactness, refinement capillary aperture, improve concrete impermeability, use trolamine simultaneously, make hydrated cementitious more abundant, improve the structure of interfacial transition zone, in addition, also use N, N-dimethylethanolamine, effectively delay the destruction of chlorion to rebar passivation film.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
Embodiment one: a kind of for concrete reinforcing steel bar corrosion inhibitor
A kind of for concrete reinforcing steel bar corrosion inhibitor, described reinforcing steel bar corrosion inhibitor is obtained after mixing by the material of following masses percentage composition;
Silicon ash 20%;
Superfined flyash 78%;
Trolamine 1%;
N, N-dimethylethanolamine 1%.
Described silicon ash is densified silica fume, and its specific surface area is 20000m
2/ Kg.
Described flyash is first level flour coal ash, and its surface-area is 700m
2.
Described trolamine is industrial goods, and its purity is 99%.
Described N, N-dimethylethanolamine is industrial goods, and its purity is 99%.
Described reinforcing steel bar corrosion inhibitor adopts inner blending method to mix in described concrete, and the incorporation of described reinforcing steel bar corrosion inhibitor is 8% of the quality of gelling material in concrete.
Embodiment two: a kind of for concrete reinforcing steel bar corrosion inhibitor
A kind of for concrete reinforcing steel bar corrosion inhibitor, described reinforcing steel bar corrosion inhibitor is obtained after mixing by the material of following masses percentage composition;
Silicon ash 30%;
Superfined flyash 64%;
Trolamine 3%;
N, N-dimethylethanolamine 3%.
Described silicon ash is densified silica fume, and its specific surface area is 20100m
2/ Kg.
Described flyash is first level flour coal ash, and its surface-area is 705m
2.
Described trolamine is industrial goods, and its purity is 99.1%.
Described N, N-dimethylethanolamine is industrial goods, and its purity is 99%.
Described reinforcing steel bar corrosion inhibitor adopts inner blending method to mix in described concrete, and the incorporation of described reinforcing steel bar corrosion inhibitor is 10% of the quality of gelling material in concrete.
Embodiment three: a kind of for concrete reinforcing steel bar corrosion inhibitor
A kind of for concrete reinforcing steel bar corrosion inhibitor, described reinforcing steel bar corrosion inhibitor is obtained after mixing by the material of following masses percentage composition;
Silicon ash 25%;
Superfined flyash 70%;
Trolamine 2%;
N, N-dimethylethanolamine 3%.
Described silicon ash is densified silica fume, and its specific surface area is 20000m
2/ Kg.
Described flyash is first level flour coal ash, and its surface-area is 700m
2.
Described trolamine is industrial goods, and its purity is 99%.
Described N, N-dimethylethanolamine is industrial goods, and its purity is 99%.
Be added to by the reinforcing steel bar corrosion inhibitor of embodiment three in a concrete formulation, concrete concrete formulation is: gelling material 20 weight part; Rubber grain 20 weight part, particle size is 80 orders; Silane coupling agent 0.3 weight part; River sand 40 weight part; Water 17.1 weight part; Water reducer 0.6 weight part; Polymer fiber 2 weight part.In gelling material, cement is 70% of gelling material gross weight, and breeze is 10% of gelling material gross weight, and flyash is 10% of gelling material gross weight; Reinforcing steel bar corrosion inhibitor is 10% of gelling material gross weight.
Above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to spirit of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (6)
1. for a concrete reinforcing steel bar corrosion inhibitor, it is characterized in that: described reinforcing steel bar corrosion inhibitor is obtained after mixing by the material of following masses percentage composition;
Silicon ash 20 ~ 30%;
Superfined flyash 64 ~ 78%;
Trolamine 1 ~ 3%;
N, N-dimethylethanolamine 1 ~ 3%.
2. according to claim 1 for concrete reinforcing steel bar corrosion inhibitor, it is characterized in that: described silicon ash is densified silica fume, and its specific surface area is more than or equal to 20000m
2/ Kg.
3. according to claim 1 for concrete reinforcing steel bar corrosion inhibitor, it is characterized in that: described flyash is first level flour coal ash, and its surface-area is more than or equal to 700m
2.
4. according to claim 1 for concrete reinforcing steel bar corrosion inhibitor, it is characterized in that: the purity of described trolamine is more than or equal to 99%.
5. according to claim 1 for concrete reinforcing steel bar corrosion inhibitor, it is characterized in that: the purity of described N, N-dimethylethanolamine is more than or equal to 99%.
6. according to claim 1 for concrete reinforcing steel bar corrosion inhibitor, it is characterized in that: described reinforcing steel bar corrosion inhibitor adopts inner blending method to mix in described concrete, and the incorporation of described reinforcing steel bar corrosion inhibitor is 6 ~ 10% of the quality of gelling material in concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410457016.5A CN104211317A (en) | 2014-09-10 | 2014-09-10 | Reinforcing steel bar corrosion inhibiting agent for concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410457016.5A CN104211317A (en) | 2014-09-10 | 2014-09-10 | Reinforcing steel bar corrosion inhibiting agent for concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104211317A true CN104211317A (en) | 2014-12-17 |
Family
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| CN201410457016.5A Pending CN104211317A (en) | 2014-09-10 | 2014-09-10 | Reinforcing steel bar corrosion inhibiting agent for concrete |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104556789A (en) * | 2014-12-27 | 2015-04-29 | 北京工业大学 | Doped triethanolamine reinforced concrete corrosion inhibitor |
| CN106007538A (en) * | 2016-05-30 | 2016-10-12 | 江苏名和集团有限公司 | Anti-permeability concrete admixture |
| CN108689629A (en) * | 2018-05-30 | 2018-10-23 | 中国科学院海洋研究所 | A kind of organic reinforced concrete anti-corrosion admixture and its application |
| CN112279546A (en) * | 2020-10-13 | 2021-01-29 | 河南理工大学 | Reinforced concrete composite rust inhibitor based on natural gluten |
| CN115594436A (en) * | 2022-02-23 | 2023-01-13 | 贵州天威建材科技有限责任公司（Cn） | Chlorine-free concrete air sealing agent and preparation method thereof |
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| CN102992698A (en) * | 2012-11-20 | 2013-03-27 | 浙江合力新型建材有限公司 | Compound-doped mineral admixture for reinforced concrete structure of oceanographic engineering |
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2014
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Patent Citations (10)
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| US6174461B1 (en) * | 1998-02-27 | 2001-01-16 | Cortec Corporation | Concrete sealers with migrating corrosion inhibitors |
| US6342101B1 (en) * | 1999-10-11 | 2002-01-29 | Cortec Corporation | Migrating corrosion inhibitors combined with concrete and modifers |
| CN1403400A (en) * | 2002-10-14 | 2003-03-19 | 上海市建筑科学研究院 | Admixture specially for high-performance marine concrete |
| CN1792982A (en) * | 2005-11-25 | 2006-06-28 | 华南理工大学 | Silicate cement of precenting chlorate corrosion |
| CN101168480A (en) * | 2006-10-23 | 2008-04-30 | 浙江合力新型建材有限公司 | High-performance concrete corrosion-resistant anti-cracking agent and producing method thereof |
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| JP2010100472A (en) * | 2008-10-23 | 2010-05-06 | Denki Kagaku Kogyo Kk | Cement admixture and cement composition |
| CN101838120A (en) * | 2010-04-07 | 2010-09-22 | 江苏博特新材料有限公司 | Migration-type organic reinforced concrete anti-corrosion admixture |
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| CN102992698A (en) * | 2012-11-20 | 2013-03-27 | 浙江合力新型建材有限公司 | Compound-doped mineral admixture for reinforced concrete structure of oceanographic engineering |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104556789A (en) * | 2014-12-27 | 2015-04-29 | 北京工业大学 | Doped triethanolamine reinforced concrete corrosion inhibitor |
| CN106007538A (en) * | 2016-05-30 | 2016-10-12 | 江苏名和集团有限公司 | Anti-permeability concrete admixture |
| CN108689629A (en) * | 2018-05-30 | 2018-10-23 | 中国科学院海洋研究所 | A kind of organic reinforced concrete anti-corrosion admixture and its application |
| CN112279546A (en) * | 2020-10-13 | 2021-01-29 | 河南理工大学 | Reinforced concrete composite rust inhibitor based on natural gluten |
| CN115594436A (en) * | 2022-02-23 | 2023-01-13 | 贵州天威建材科技有限责任公司（Cn） | Chlorine-free concrete air sealing agent and preparation method thereof |
| CN115594436B (en) * | 2022-02-23 | 2023-11-03 | 贵州天威建材科技有限责任公司 | Chlorine-free concrete air-tight agent and preparation method thereof |
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Application publication date: 20141217 |