CN116496021A - Marine corrosion inhibitor and preparation method thereof - Google Patents
Marine corrosion inhibitor and preparation method thereof Download PDFInfo
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- CN116496021A CN116496021A CN202310564754.9A CN202310564754A CN116496021A CN 116496021 A CN116496021 A CN 116496021A CN 202310564754 A CN202310564754 A CN 202310564754A CN 116496021 A CN116496021 A CN 116496021A
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- corrosion inhibitor
- marine corrosion
- marine
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- concrete
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- 230000007797 corrosion Effects 0.000 title claims abstract description 74
- 238000005260 corrosion Methods 0.000 title claims abstract description 74
- 239000003112 inhibitor Substances 0.000 title claims abstract description 59
- 238000002360 preparation method Methods 0.000 title description 49
- 239000004567 concrete Substances 0.000 claims abstract description 34
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 29
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 14
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 14
- 239000010881 fly ash Substances 0.000 claims abstract description 14
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229920001778 nylon Polymers 0.000 claims abstract description 14
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims abstract description 14
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims abstract description 14
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims abstract description 14
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims description 30
- 238000002156 mixing Methods 0.000 claims description 20
- 239000004568 cement Substances 0.000 claims description 18
- 239000011259 mixed solution Substances 0.000 claims description 16
- 239000011575 calcium Substances 0.000 claims description 12
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 11
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 11
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 11
- 229910052791 calcium Inorganic materials 0.000 claims description 11
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 11
- 239000000395 magnesium oxide Substances 0.000 claims description 11
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 11
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 11
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 11
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 11
- BYDRTKVGBRTTIT-UHFFFAOYSA-N 2-methylprop-2-en-1-ol Chemical compound CC(=C)CO BYDRTKVGBRTTIT-UHFFFAOYSA-N 0.000 claims description 9
- SONHXMAHPHADTF-UHFFFAOYSA-M sodium;2-methylprop-2-enoate Chemical compound [Na+].CC(=C)C([O-])=O SONHXMAHPHADTF-UHFFFAOYSA-M 0.000 claims description 4
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract description 2
- 239000004566 building material Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 13
- 239000013535 sea water Substances 0.000 description 10
- SZHIIIPPJJXYRY-UHFFFAOYSA-M sodium;2-methylprop-2-ene-1-sulfonate Chemical compound [Na+].CC(=C)CS([O-])(=O)=O SZHIIIPPJJXYRY-UHFFFAOYSA-M 0.000 description 7
- 230000006378 damage Effects 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- WCASXYBKJHWFMY-UHFFFAOYSA-N crotyl alcohol Chemical compound CC=CCO WCASXYBKJHWFMY-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- YLUIKWVQCKSMCF-UHFFFAOYSA-N calcium;magnesium;oxygen(2-) Chemical group [O-2].[O-2].[Mg+2].[Ca+2] YLUIKWVQCKSMCF-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000003090 exacerbative effect Effects 0.000 description 1
- 230000002431 foraging effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 235000015170 shellfish Nutrition 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
Classifications
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/60—Agents for protection against chemical, physical or biological attack
- C04B2103/61—Corrosion inhibitors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention belongs to the field of building material production, and relates to a marine corrosion inhibitor. The marine corrosion inhibitor is characterized by comprising 5-30% of an expanding agent, 0.5-2% of a water reducing agent, 20-50% of nylon fiber, 5-20% of polyvinylpyrrolidone, 5-15% of kaolin, 15-40% of fly ash and 0.5-5% of barium carbonate. The marine corrosion inhibitor can obviously improve the performances of marine concrete such as sulfate resistance, chloride ion corrosion resistance, impermeability and the like, and enhance the corrosion resistance of the concrete.
Description
Technical Field
The invention belongs to the field of building material production, and relates to a marine corrosion inhibitor.
Background
The multiple complex factors such as salinity, climate, biology and the like in the marine environment are mutually overlapped, so that the marine environment is a service environment with the most severe materials, and is especially suitable for the cement concrete which is a main material for constructing marine foundation facilities.
The average salt content in the seawater is 3.5 percent, mainly Na+, mg2+, cl-, SO 42-and the like. On the one hand, the salt in the seawater can react with the main component of the cement hardened body, such as Mg2+ reacts with C-S-H (II) gel in the cement hardened body, so that the cement hardened body becomes M-S-H with weak or even no gelation; on the other hand, the long-term soaking in seawater causes dissolution of relatively easily soluble components such as calcium hydroxide Ca (OH) 2 in the cement hardened body, thereby causing reduction in the alkalinity of the hardened body and destruction of the dense structure. These are chemical corrosion of cement concrete by the marine environment.
Marine environments have physical and biological corrosion in addition to chemical corrosion to the cement concrete in service therein. The physical corrosion is mainly physical damage to the cement concrete caused by the combined action of dynamic seawater and environment, such as scouring action of seawater, sediment and other impurities in the seawater on the cement concrete along with sea waves and tides for a long time; the cement concrete in the water level fluctuation area and the splash area under the action of tides and sea waves repeatedly undergoes the process of soaking by seawater, evaporating and drying by water, and the salt is continuously concentrated and separated out and grows by crystallization to cause the damage of the cement concrete; freezing seawater in winter causes freeze thawing damage of cement concrete and the like. Bioerosion is the attachment of marine organisms such as shellfish, algae and microorganisms to the surface of cement concrete and the generation of acidic substances that cause corrosion to cement concrete. These corrosive effects of the marine environment tend to all occur simultaneously and mutually promote, greatly exacerbating the damage, and ocean engineering and seaside construction present significant challenges.
The problem of corrosion of marine engineering structures is a worldwide problem, and marine structures are severely lost due to marine corrosion worldwide. Along with the progress of concrete and additive technology, the corrosion resistance of ocean engineering is greatly improved, but the seawater corrosion problem still exists, and the problem needs to be solved.
Disclosure of Invention
The invention mainly aims to provide the marine concrete corrosion inhibitor, which can obviously improve the corrosion resistance of concrete after being added in the concrete production process.
The invention adopts the following technical scheme to realize the purposes:
a marine corrosion inhibitor comprises the following components:
5-30% of expanding agent
Water reducer 0.5-2%
20-50% of nylon fiber
5-20% of polyvinylpyrrolidone
Kaolin 5-15%
15-40% of fly ash
0.5-5% of barium carbonate;
further, the marine corrosion inhibitor comprises the following components:
10-20% of expanding agent
1-2% of water reducer
30-40% of nylon fiber
5-10% of polyvinylpyrrolidone
10-15% of kaolin
25-35% of fly ash
1-3% of barium carbonate.
The expanding agent in the marine corrosion inhibitor is a magnesium oxide-calcium sulfoaluminate composite expanding agent; specifically, the expanding agent contains 2-10% of magnesium oxide expanding agent and 3-20% of calcium sulfoaluminate expanding agent; further, the expanding agent contains 5-10% of magnesium oxide expanding agent and 5-10% of calcium sulfoaluminate expanding agent.
The marine corrosion inhibitor comprises 0.1-0.5% of methyl allyl alcohol polyoxyethylene ether, 0.2-0.8% of acrylic acid, 0.1-0.5% of sodium lignin sulfonate and 0.1-0.2% of sodium methacrylate sulfonate; further, the water reducer contains 0.3-0.5% of methyl allyl alcohol polyoxyethylene ether, 0.4-0.5% of acrylic acid, 0.2-0.8% of sodium lignin sulfonate and 0.1-0.2% of sodium methacrylate sulfonate.
The invention also aims to provide a preparation method of the marine corrosion inhibitor, which specifically comprises the following steps:
step A, adding a water reducer and polyvinylpyrrolidone into water to obtain a mixed solution;
step B, mixing an expanding agent, kaolin and fly ash to obtain a mixture 1;
step C: mixing the mixture 1 obtained in the step B, nylon fiber and barium carbonate to obtain a premix;
and D, adding the mixture obtained in the step C into the mixed solution obtained in the step A, and drying to obtain the marine corrosion inhibitor.
The invention also provides a specific application of the marine corrosion inhibitor, namely the marine corrosion inhibitor can be used as an additive for concrete production.
The addition amount of the marine corrosion inhibitor provided by the invention is 3-8% of the mass of cement in concrete when the marine corrosion inhibitor is used as an additive for concrete production; further, the addition amount of the marine corrosion inhibitor is 5%.
The invention has the following beneficial effects:
the marine corrosion inhibitor can block gaps in cement particles, so that marine concrete expands, the structure of the concrete is more foraging, and the water blocking effect of the concrete is improved; meanwhile, the components are matched and formed into a film, so that the invasion of harmful substances such as chloride ions in the seawater can be effectively prevented, the effect of preventing the harmful substances from corroding is achieved, the performances of the marine concrete such as sulfate resistance, chloride ion corrosion resistance and impermeability can be remarkably improved, the corrosion resistance of the concrete is enhanced, the service life of the marine concrete is prolonged, and good economic benefits are achieved.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The present invention is further illustrated below with reference to specific examples, which are to be construed as merely illustrative of the invention and not limiting of its scope, as various equivalent modifications to the invention will fall within the scope of the claims of the application after reading the invention.
Example 1 marine corrosion inhibitor preparation
The preparation method comprises the following steps:
step A, adding methallyl alcohol polyoxyethylene ether, acrylic acid, sodium lignin sulfonate, sodium methallyl sulfonate and polyvinylpyrrolidone into water to obtain a mixed solution;
step B, mixing a magnesium oxide expanding agent, a calcium sulfoaluminate expanding agent, kaolin and fly ash to obtain a mixture 1;
step C: mixing the mixture 1 obtained in the step B, nylon fiber and barium carbonate to obtain a premix;
and D, adding the mixture obtained in the step C into the mixed solution obtained in the step A, and drying to obtain the marine corrosion inhibitor.
Example 2 preparation of marine corrosion inhibitor
The preparation method comprises the following steps: the preparation was as described in reference example 1.
Example 3 preparation of marine corrosion inhibitor
The preparation method comprises the following steps: the preparation was as described in reference example 1.
Example 4 marine Corrosion inhibitor preparation
The preparation method comprises the following steps: the preparation was as described in reference example 1.
Example 5 preparation of marine corrosion inhibitor
The preparation method comprises the following steps: the preparation was as described in reference example 1.
Example 6 preparation of marine corrosion inhibitor
The preparation method comprises the following steps: the preparation was as described in reference example 1.
Comparative example 1 marine corrosion inhibitor preparation
The preparation method comprises the following steps:
step A, adding methallyl alcohol polyoxyethylene ether, acrylic acid, sodium lignin sulfonate, sodium methallyl sulfonate and polyvinylpyrrolidone into water to obtain a mixed solution;
step B, mixing kaolin and fly ash to obtain a mixture 1;
step C: mixing the mixture 1 obtained in the step B, nylon fiber and barium carbonate to obtain a premix;
and D, adding the mixture obtained in the step C into the mixed solution obtained in the step A, and drying to obtain the marine corrosion inhibitor.
Comparative example 2 marine corrosion inhibitor preparation
The preparation method comprises the following steps:
step A, adding polyvinylpyrrolidone into water to obtain a solution;
step B, mixing a magnesium oxide expanding agent, a calcium sulfoaluminate expanding agent, kaolin and fly ash to obtain a mixture 1;
step C: mixing the mixture 1 obtained in the step B, nylon fiber and barium carbonate to obtain a premix;
and D, adding the mixture obtained in the step C into the solution obtained in the step A, and drying to obtain the marine corrosion inhibitor. Comparative example 3 marine corrosion inhibitor preparation
The preparation method comprises the following steps:
step A, adding methallyl alcohol polyoxyethylene ether, acrylic acid, sodium lignin sulfonate, sodium methallyl sulfonate and polyvinylpyrrolidone into water to obtain a mixed solution;
step B, mixing a magnesium oxide expanding agent, a calcium sulfoaluminate expanding agent, kaolin and fly ash to obtain a mixture 1;
step C: mixing the mixture 1 obtained in the step B and barium carbonate to obtain a premix;
and D, adding the mixture obtained in the step C into the mixed solution obtained in the step A, and drying to obtain the marine corrosion inhibitor.
Comparative example 4 marine corrosion inhibitor preparation
The preparation method comprises the following steps:
step A, adding methallyl alcohol polyoxyethylene ether, acrylic acid, sodium lignin sulfonate and sodium methallyl sulfonate into water to obtain a water reducer solution;
step B, mixing a magnesium oxide expanding agent, a calcium sulfoaluminate expanding agent, kaolin and fly ash to obtain a mixture 1;
step C: mixing the mixture 1 obtained in the step B, nylon fiber and barium carbonate to obtain a premix;
and D, adding the mixture obtained in the step C into the water reducer solution obtained in the step A, and drying to obtain the marine corrosion inhibitor.
Comparative example 5 marine corrosion inhibitor preparation
The preparation method comprises the following steps:
step A, adding methallyl alcohol polyoxyethylene ether, acrylic acid, sodium lignin sulfonate, sodium methallyl sulfonate and polyvinylpyrrolidone into water to obtain a mixed solution;
step B, mixing a magnesium oxide expanding agent, a calcium sulfoaluminate expanding agent and fly ash to obtain a mixture 1;
step C: mixing the mixture 1 obtained in the step B, nylon fiber and barium carbonate to obtain a premix;
and D, adding the mixture obtained in the step C into the mixed solution obtained in the step A, and drying to obtain the marine corrosion inhibitor.
Comparative example 6 marine corrosion inhibitor preparation
The preparation method comprises the following steps:
step A, adding methallyl alcohol polyoxyethylene ether, acrylic acid, sodium lignin sulfonate, sodium methallyl sulfonate and polyvinylpyrrolidone into water to obtain a mixed solution;
step B, mixing a magnesium oxide expanding agent, a calcium sulfoaluminate expanding agent and kaolin to obtain a mixture 1;
step C: mixing the mixture 1 obtained in the step B, nylon fiber and barium carbonate to obtain a premix;
and D, adding the mixture obtained in the step C into the mixed solution obtained in the step A, and drying to obtain the marine corrosion inhibitor.
Comparative example 7 marine corrosion inhibitor preparation
The preparation method comprises the following steps:
step A, adding methallyl alcohol polyoxyethylene ether, acrylic acid, sodium lignin sulfonate, sodium methallyl sulfonate and polyvinylpyrrolidone into water to obtain a mixed solution;
step B, mixing a magnesium oxide expanding agent, a calcium sulfoaluminate expanding agent, kaolin and fly ash to obtain a mixture 1;
step C: mixing the mixture 1 obtained in the step B and nylon fibers to obtain a premix;
and D, adding the mixture obtained in the step C into the mixed solution obtained in the step A, and drying to obtain the marine corrosion inhibitor.
Comparative example 8 marine corrosion inhibitor preparation
The preparation method comprises the following steps: the preparation was as described in reference example 1. Comparative example 9 marine corrosion inhibitor preparation
The preparation method comprises the following steps: the preparation was as described in reference example 1. Comparative example 10 marine corrosion inhibitor preparation
The preparation method comprises the following steps: the preparation was as described in reference example 1. Comparative example 11 marine corrosion inhibitor preparation
The preparation method comprises the following steps: the preparation was as described in reference example 1. Comparative example 12 marine corrosion inhibitor preparation
The preparation method comprises the following steps: the preparation was as described in reference example 1.
Performance testing
The flexural/compressive strength of the marine corrosion inhibitor-added concrete prepared in examples 1 to 6 and comparative examples 1 to 12 was tested according to GB/T50081 Standard for test method of physical mechanical Properties of concrete in a common Environment and immersed in sodium sulfate solution (mass concentration: 5%).
Experiment one, influence of different marine corrosion inhibitors on the flexural/compressive properties of concrete
Experiment II, influence of addition amount of marine corrosive on flexural/compressive properties of concrete
Claims (10)
1. The marine corrosion inhibitor is characterized by comprising the following components:
5-30% of expanding agent
Water reducer 0.5-2%
20-50% of nylon fiber
5-20% of polyvinylpyrrolidone
Kaolin 5-15%
15-40% of fly ash
0.5-5% of barium carbonate.
2. The marine corrosion inhibitor of claim 1, comprising the following:
10-20% of expanding agent
1-2% of water reducer
30-40% of nylon fiber
5-10% of polyvinylpyrrolidone
10-15% of kaolin
25-35% of fly ash
1-3% of barium carbonate.
3. A marine corrosion inhibitor according to claim 1 or claim 2, wherein the expander comprises 2-10% magnesium oxide expander and 3-20% calcium sulfoaluminate expander. .
4. A marine corrosion inhibitor according to claim 3, wherein the expander comprises 5-10% magnesium oxide expander and 5-10% calcium sulfoaluminate expander.
5. The marine corrosion inhibitor according to claim 1 or 2, wherein the water reducer comprises 0.1-0.5% of methallyl alcohol polyoxyethylene ether, 0.2-0.8% of acrylic acid, 0.1-0.5% of sodium lignin sulfonate and 0.1-0.2% of sodium methacrylate sulfonate.
6. The marine corrosion inhibitor according to claim 5, wherein the water reducer comprises 0.3-0.5% of methallyl alcohol polyoxyethylene ether, 0.4-0.5% of acrylic acid, 0.2-0.8% of sodium lignin sulfonate and 0.1-0.2% of sodium methacrylate sulfonate.
7. The marine corrosion inhibitor according to claim 1 or 2, wherein the method for preparing the marine corrosion inhibitor comprises the steps of:
step A, adding a water reducer and polyvinylpyrrolidone into water to obtain a mixed solution;
step B, mixing an expanding agent, kaolin and fly ash to obtain a mixture 1;
step C: mixing the mixture 1 obtained in the step B, nylon fiber and barium carbonate to obtain a premix;
and D, adding the mixture obtained in the step C into the mixed solution obtained in the step A, and drying to obtain the marine corrosion inhibitor.
8. Use of a marine corrosion inhibitor in the production of marine concrete, wherein the marine corrosion inhibitor is as claimed in any one of claims 1 to 7.
9. The use according to claim 8, wherein the marine corrosion inhibitor is added in an amount of 3-8% of the mass of cement in the concrete during the production of the concrete.
10. The use according to claim 9, wherein the marine corrosion inhibitor is added in an amount of 5% of the mass of cement in the concrete during the production of the concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202310564754.9A CN116496021A (en) | 2023-05-19 | 2023-05-19 | Marine corrosion inhibitor and preparation method thereof |
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| CN202310564754.9A CN116496021A (en) | 2023-05-19 | 2023-05-19 | Marine corrosion inhibitor and preparation method thereof |
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| CN116496021A true CN116496021A (en) | 2023-07-28 |
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