CN101007717A - Reinforced concrete anti-rusting agent - Google Patents
Reinforced concrete anti-rusting agent Download PDFInfo
- Publication number
- CN101007717A CN101007717A CNA2007100368210A CN200710036821A CN101007717A CN 101007717 A CN101007717 A CN 101007717A CN A2007100368210 A CNA2007100368210 A CN A2007100368210A CN 200710036821 A CN200710036821 A CN 200710036821A CN 101007717 A CN101007717 A CN 101007717A
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- China
- Prior art keywords
- acid
- rust inhibitor
- concrete
- steel bar
- bar rust
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/26—Corrosion of reinforcement resistance
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
the invention discloses a concrete bar anti-rust agent, which comprises the following parts: 10-20% amido alcohol, 10-30% acid and 60-70% water. The invention possesses high rust-proof property, which is fit for harbor engineering and civil concrete structure.
Description
Technical field
The present invention relates to a kind of material of construction, relate in particular to a kind of rust inhibitor that is used for Steel Concrete.
Background technology
Steel bar corrosion becomes the principal element that the world today influences concrete durability, and particularly in bar in chlorine salt solution, reinforcement corrosion is a first cause.USBS investigation in 1975 shows: the annual various corrosion loss of the U.S. are 70,000,000,000 dollars, and wherein the Rust of Rebar in Concrete loss accounts for 40% (28,000,000,000 dollars).Recently, U.S.'s highway research strategic plan discloses: to the end of this century, for changing or repair the highway concrete decking that spreading of cold day cryosel causes, estimation will expend 4,000 hundred million dollars, and wherein major part is that steel bar corrosion causes.In northern China, the Steel Concrete viaduct of picture Beijing, Tianjin, even also do not want normal salting ice and snow as U.S.'s north cold day, duration of service is yet not long, but extensively show steel bar corrosion and concrete destruction sign along the muscle spalling, and the development that increasingly sharpens.And for example China's southeastern coast be in wave spatter the district or the time when doing the steel bar corrosion of the sea port dock concrete beam plate on wet top, tidal range district destroy its popularity and severity and not second to the vehicular bridge of the above-mentioned U.S. spreading of cold day cryosel.
In those early years, American Concrete Institute (ACI) is recommended the corrosion of three kinds of addition thereto control concrete reinforcements: the recommended new construction that is used for of epoxy-coated reinforcement and reinforcing bar rust inhibitor; Electro-chemical protection is mainly used in recovery project.After 1986, occur the corrosion failure problem (bridge that has only used 6 years) of the bridge of employing epoxy-coated reinforcement successively, the conclusion of report of survey is: " epoxy-coated reinforcement can not reach protection over a long time ".Reason is many-sided, and wherein, the cohesive force of epoxy coat and reinforcing bar descends rapidly and peels off is one of the main reasons.Report is pointed out: " in view of epoxy-coated reinforcement can not reach permanently effective protection purpose, the better hyposmosis concrete steel of development turning efficiency bar rust inhibitor aspect ".Therefore, in the last few years, the Research And Engineering of reinforcing bar rust inhibitor was used and had been obtained fast development.Mixing the reinforcing bar rust inhibitor becomes method in common, and is the simplest, economical and effective technical measures.There is statistics to show that 1993, the whole world had 0.2 hundred million m approximately
3Concrete used the reinforcing bar rust inhibitor, and, have 500,000,000 m at least by 1998
3Concrete used the reinforcing bar rust inhibitor, increase more than 20 times in 5 years, visible reinforcing bar rust inhibitor development trend is very swift and violent.The reinforcing bar rust inhibitor has become a worldwide current techique as one of important method that improves concrete durability.
The U.S. brings into use the reinforcing bar rust inhibitor in late 1970s, the popularization that is applied gradually of the middle and later periods eighties.Early stage reinforcing bar rust inhibitor product mainly comprises various nitrite, chromic salt and Sodium Benzoate etc.But these rust inhibitors all have in various degree negative impact to concrete time of coagulation, early strength and later strength etc.U.S. Grace company from the mid-1970s to studies show that in a large number that calcium nitrite carries out, the resistance rust effect of calcium nitrite is better than inorganic rust inhibitors such as borate, molybdate and phosphoric acid salt, but owing to the health harmful (carinogenicity) of calcium nitrite to human body, countries such as Switzerland and Germany ban use of.
Domestic research starting to the reinforcing bar rust inhibitor is later relatively, up to now, mainly concentrate on investigation and the Analysis on Mechanism, the research aspect repair process also seldom, and the research of material and structure repair disconnection.The beginning of the nineties, the reinforcing bar rust inhibitor just began to be applied.Use maximum nitrites rust inhibitors that remain.And there is the problem with quantity not sufficient meeting accelerated corrosion in the nitrites rust inhibitor, and domestic it is used also compared cautiously.
Summary of the invention
At the deficiency that prior art exists, the purpose of this invention is to provide a kind of concrete steel bar rust inhibitor that concrete coagulating time, intensity etc. is not had negative impact and has efficient resistance rust character.
The technical scheme that realizes objects of the present invention is as follows:
A kind of concrete steel bar rust inhibitor comprises amido alcohol, acid and water, and the per-cent of the shared gross weight of each component is:
Amido alcohol: 10~20%
Acid: 10~30%
Water: 60~70%
The used amido alcohol of the present invention comprises: thanomin, N-Mono Methyl Ethanol Amine, N, N-dimethylethanolamine, trolamine, to the hydroxyl hexahydroaniline, to the hydroxyl N-methylcyclohexylamine, to hydroxyl N, N-dimethylcyclohexylamines etc. can be any one or more than one mixture.
The used acid of the present invention comprises: hydrochloric acid, nitric acid, sulfuric acid, phosphoric acid, acetic acid, phenylformic acid, citric acid, tartrate etc. can be any one or more than one mixture.
The used water of the present invention is tap water.
According to the above ratio amido alcohol, acid and water are carried out mixing and stirring, promptly get concrete steel bar rust inhibitor of the present invention.
The concrete steel bar rust inhibitor that the present invention makes does not have any negative impact to concrete character, and has reinforcing bar anticorrosion performance efficiently, can be widely used in harbour engineering, coastal building, covil construction etc. and newly mix skeleton construction.
Description of drawings
Fig. 1 is rust inhibitor anticorrosion performance of the present invention and existing rust inhibitor anticorrosion performance comparison diagram.
Embodiment
How further specify the present invention below in conjunction with specific embodiment realizes:
Embodiment 1
Take by weighing the thanomin of 10kg, the hydrochloric acid of 30kg, the tap water that adds 60kg again stirs, and promptly makes concrete steel bar rust inhibitor of the present invention after stirring.
Embodiment 2
Take by weighing the N-Mono Methyl Ethanol Amine of 15kg, the sulfuric acid of 20kg, the tap water that adds 65kg again stirs, and promptly makes concrete steel bar rust inhibitor of the present invention after stirring.
Embodiment 3
Take by weighing the trolamine of 20kg, the phenylformic acid of 20kg, the tap water that adds 60kg again stirs, and promptly makes concrete steel bar rust inhibitor of the present invention after stirring.
Take by weighing the trolamine of 10kg and 10kg to the phenylformic acid of hydroxyl N-methylcyclohexylamine, 10kg and the nitric acid of 10kg, the tap water that adds 60kg again stirs, and promptly makes concrete steel bar rust inhibitor of the present invention after stirring.
Take by weighing the trolamine of thanomin, 5kg of 5kg and 5kg to hydroxyl N, the citric acid of the sulfuric acid of N-dimethylcyclohexylamine, 10kg, the acetic acid of 5kg and 5kg, the tap water that adds 65kg again stirs, and promptly makes concrete steel bar rust inhibitor of the present invention after stirring.
Embodiment 6
Take by weighing thanomin, the 3kg of 3kg trolamine, 5kg to hydroxyl N, the N-Mono Methyl Ethanol Amine of N-dimethylcyclohexylamine and 4kg, the citric acid of the sulfuric acid of 8kg, the acetic acid of 3kg and 4kg and the tartrate of 6kg, the tap water that adds 64kg again stirs, and promptly makes concrete steel bar rust inhibitor of the present invention after stirring.
In Steel Concrete, add respectively 2.0% embodiment of the invention 1 (among the figure with "
" expression), embodiment 3 (among the figure with "
" expression) and embodiment 4 (use among the figure "
" expression) prepared rust inhibitor (gel material content), in Steel Concrete, add again 2.0% commercially available rust inhibitor (among the figure with "
" expression) and (gel material content) and with the benchmark test specimen (among the figure with "
" expression) and anticorrosion performance compare, the Steel Concrete proportioning sees Table 1.Other conditions are: NaCl concentration 5%, voltage 6V.
Table 1 test Steel Concrete proportioning (kg/m
3)
Cement | Sand | Flyash | Rubble | Water | Admixture | Rust inhibitor |
350 | 714 | 50 | 1164 | 180 | 5.4 | 8 |
As can be seen from Figure 1, punch-through appearred in the benchmark test specimen at the tenth day, and after adding 2.0% commercially available rust inhibitor, the current value development trend is similar to the benchmark test specimen, and add 2.0% rust inhibitor of the present invention, current value remains on lower level always, illustrates that the Steel Concrete behind the adding rust inhibitor of the present invention has anticorrosion performance preferably.
Claims (3)
1, a kind of concrete steel bar rust inhibitor, its composition and proportioning are:
Amido alcohol: 10~20%
Acid: 10~30%
Water: 60~70%
Above-mentioned per-cent all is weight percentage.
2, concrete steel bar rust inhibitor according to claim 1, it is characterized in that: described amido alcohol is thanomin, N-Mono Methyl Ethanol Amine, N, N-dimethylethanolamine, trolamine, to the hydroxyl hexahydroaniline, to the hydroxyl N-methylcyclohexylamine, to hydroxyl N, the mixture of one or more in the N-dimethylcyclohexylamine.
3, concrete steel bar rust inhibitor according to claim 1 is characterized in that: described acid is one or more the mixture in hydrochloric acid, nitric acid, sulfuric acid, phosphoric acid, acetic acid, phenylformic acid, citric acid, the tartrate.
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CNA2007100368210A CN101007717A (en) | 2007-01-25 | 2007-01-25 | Reinforced concrete anti-rusting agent |
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Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101787534A (en) * | 2010-04-02 | 2010-07-28 | 南京艾米伦斯科技开发有限公司 | BE rust inhibitor based method and device for restoring electroosmotic salt polluted buildings |
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 |
CN101407385B (en) * | 2008-11-04 | 2011-03-30 | 南京瑞迪高新技术公司 | Alkali-free non-nitrite concrete reinforcement antirust |
CN102079640A (en) * | 2010-12-14 | 2011-06-01 | 李丽 | High corrosion resistance reinforced concrete corrosion inhibitor |
CN102167537A (en) * | 2011-01-27 | 2011-08-31 | 南京瑞迪高新技术公司 | Reinforced concrete antirust agent with sulfate corrosion resistant function |
CN102180627A (en) * | 2011-02-25 | 2011-09-14 | 北京工业大学 | Reinforced concrete material with high corrosion resistance and preparation method thereof |
CN101412601B (en) * | 2008-04-08 | 2011-09-28 | 北京冶建新技术有限公司 | Composite anti-corrosive rust inhibitor for preparing high-durability concrete |
CN102219431A (en) * | 2011-05-06 | 2011-10-19 | 上海大学 | Composite reinforcement bar rust inhibitor containing nano copper oxide |
CN102295426A (en) * | 2011-09-05 | 2011-12-28 | 甘肃土木工程科学研究院 | Organic composite nano-diameter sepiolite fiber reinforced concrete corrosion inhibitor, and preparation method and application thereof |
CN102295427A (en) * | 2011-09-05 | 2011-12-28 | 兰州大学 | Organic composite nano-diameter chrysotile fiber reinforced concrete corrosion inhibitor, and preparation method and application thereof |
CN102295425A (en) * | 2011-09-05 | 2011-12-28 | 甘肃土木工程科学研究院 | Organic composite nano-diameter palygorskite fiber reinforced concrete corrosion inhibitor, and preparation method and application thereof |
CN102295424A (en) * | 2011-09-05 | 2011-12-28 | 兰州大学 | Organic composite nano-diameter amphibole fiber reinforced concrete corrosion inhibitor, and preparation method and application thereof |
CN102320771A (en) * | 2010-08-04 | 2012-01-18 | 浙江五龙化工股份有限公司 | Reinforced concrete rust inhibitor |
CN101759390B (en) * | 2009-12-25 | 2012-03-07 | 北京工业大学 | Organic reinforced concrete corrosion resistant agent |
CN102491668A (en) * | 2011-11-18 | 2012-06-13 | 泰山医学院 | Environment-friendly high temperature activated water-based rebar rust inhibitor |
CN102503237A (en) * | 2011-11-09 | 2012-06-20 | 上海大学 | Method for preparing novel steel bar rust resistant agent |
CN102584077A (en) * | 2012-01-16 | 2012-07-18 | 中国建筑科学研究院 | Loading-type reinforcing steel bar corrosion inhibitor and preparation method thereof |
CN101844889B (en) * | 2009-03-26 | 2012-09-05 | 中冶建筑研究总院有限公司 | Composite organic reinforcing steel bar rust inhibitor for reinforced concrete |
CN102757197A (en) * | 2012-06-26 | 2012-10-31 | 江苏博特新材料有限公司 | Surface coating type reinforced concrete corrosion inhibitor and preparation method thereof |
CN101844890B (en) * | 2009-03-26 | 2013-01-02 | 北京冶建新技术有限公司 | Organic reinforcing steel bar rust inhibitor for reinforced concrete |
CN103364526A (en) * | 2012-03-27 | 2013-10-23 | 中冶建筑研究总院有限公司 | Anticorrosion mortar rust prevention performance testing method |
CN104529218A (en) * | 2014-11-24 | 2015-04-22 | 江苏苏博特新材料股份有限公司 | Multifunctional organic rust inhibitor and preparation method thereof |
CN105152559A (en) * | 2015-11-01 | 2015-12-16 | 刘应才 | Method for preparing corrosion inhibitor for reinforced concrete |
CN107352830A (en) * | 2017-07-24 | 2017-11-17 | 洛阳理工学院 | A kind of resistance rust composition and environment-friendly type corrosion inhibitor, the preparation method and application of environment-friendly type corrosion inhibitor |
WO2017197711A1 (en) * | 2016-05-20 | 2017-11-23 | 蔡琴 | Antirust agent for concrete reinforcing bars |
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2007
- 2007-01-25 CN CNA2007100368210A patent/CN101007717A/en active Pending
Cited By (33)
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CN101412601B (en) * | 2008-04-08 | 2011-09-28 | 北京冶建新技术有限公司 | Composite anti-corrosive rust inhibitor for preparing high-durability concrete |
CN101407385B (en) * | 2008-11-04 | 2011-03-30 | 南京瑞迪高新技术公司 | Alkali-free non-nitrite concrete reinforcement antirust |
CN101844890B (en) * | 2009-03-26 | 2013-01-02 | 北京冶建新技术有限公司 | Organic reinforcing steel bar rust inhibitor for reinforced concrete |
CN101844889B (en) * | 2009-03-26 | 2012-09-05 | 中冶建筑研究总院有限公司 | Composite organic reinforcing steel bar rust inhibitor for reinforced concrete |
CN101759390B (en) * | 2009-12-25 | 2012-03-07 | 北京工业大学 | Organic reinforced concrete corrosion resistant agent |
CN101787534A (en) * | 2010-04-02 | 2010-07-28 | 南京艾米伦斯科技开发有限公司 | BE rust inhibitor based method and device for restoring electroosmotic salt polluted buildings |
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 |
CN102320771B (en) * | 2010-08-04 | 2013-01-23 | 浙江五龙新材股份有限公司 | Reinforced concrete rust inhibitor |
CN102320771A (en) * | 2010-08-04 | 2012-01-18 | 浙江五龙化工股份有限公司 | Reinforced concrete rust inhibitor |
CN102079640A (en) * | 2010-12-14 | 2011-06-01 | 李丽 | High corrosion resistance reinforced concrete corrosion inhibitor |
CN102167537A (en) * | 2011-01-27 | 2011-08-31 | 南京瑞迪高新技术公司 | Reinforced concrete antirust agent with sulfate corrosion resistant function |
CN102180627A (en) * | 2011-02-25 | 2011-09-14 | 北京工业大学 | Reinforced concrete material with high corrosion resistance and preparation method thereof |
CN102180627B (en) * | 2011-02-25 | 2013-01-09 | 北京工业大学 | Reinforced concrete material with high corrosion resistance and preparation method thereof |
CN102219431A (en) * | 2011-05-06 | 2011-10-19 | 上海大学 | Composite reinforcement bar rust inhibitor containing nano copper oxide |
CN102219431B (en) * | 2011-05-06 | 2012-12-19 | 上海大学 | Composite reinforcement bar rust inhibitor containing nano copper oxide |
CN102295426A (en) * | 2011-09-05 | 2011-12-28 | 甘肃土木工程科学研究院 | Organic composite nano-diameter sepiolite fiber reinforced concrete corrosion inhibitor, and preparation method and application thereof |
CN102295424A (en) * | 2011-09-05 | 2011-12-28 | 兰州大学 | Organic composite nano-diameter amphibole fiber reinforced concrete corrosion inhibitor, and preparation method and application thereof |
CN102295427A (en) * | 2011-09-05 | 2011-12-28 | 兰州大学 | Organic composite nano-diameter chrysotile fiber reinforced concrete corrosion inhibitor, and preparation method and application thereof |
CN102295425A (en) * | 2011-09-05 | 2011-12-28 | 甘肃土木工程科学研究院 | Organic composite nano-diameter palygorskite fiber reinforced concrete corrosion inhibitor, and preparation method and application thereof |
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CN102295424B (en) * | 2011-09-05 | 2012-05-23 | 兰州大学 | Organic composite nano-diameter amphibole fiber reinforced concrete corrosion inhibitor, and preparation method and application thereof |
CN102295427B (en) * | 2011-09-05 | 2012-05-23 | 兰州大学 | Organic composite nano-diameter chrysotile fiber reinforced concrete corrosion inhibitor, and preparation method and application thereof |
CN102503237A (en) * | 2011-11-09 | 2012-06-20 | 上海大学 | Method for preparing novel steel bar rust resistant agent |
CN102491668A (en) * | 2011-11-18 | 2012-06-13 | 泰山医学院 | Environment-friendly high temperature activated water-based rebar rust inhibitor |
CN102584077A (en) * | 2012-01-16 | 2012-07-18 | 中国建筑科学研究院 | Loading-type reinforcing steel bar corrosion inhibitor and preparation method thereof |
CN103364526A (en) * | 2012-03-27 | 2013-10-23 | 中冶建筑研究总院有限公司 | Anticorrosion mortar rust prevention performance testing method |
CN103364526B (en) * | 2012-03-27 | 2015-06-10 | 中冶建筑研究总院有限公司 | Anticorrosion mortar rust prevention performance testing method |
CN102757197A (en) * | 2012-06-26 | 2012-10-31 | 江苏博特新材料有限公司 | Surface coating type reinforced concrete corrosion inhibitor and preparation method thereof |
CN104529218A (en) * | 2014-11-24 | 2015-04-22 | 江苏苏博特新材料股份有限公司 | Multifunctional organic rust inhibitor and preparation method thereof |
CN105152559A (en) * | 2015-11-01 | 2015-12-16 | 刘应才 | Method for preparing corrosion inhibitor for reinforced concrete |
WO2017197711A1 (en) * | 2016-05-20 | 2017-11-23 | 蔡琴 | Antirust agent for concrete reinforcing bars |
CN107352830A (en) * | 2017-07-24 | 2017-11-17 | 洛阳理工学院 | A kind of resistance rust composition and environment-friendly type corrosion inhibitor, the preparation method and application of environment-friendly type corrosion inhibitor |
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