CN113307536A - Anticorrosive and rust-resistant anti-cracking waterproof agent - Google Patents
Anticorrosive and rust-resistant anti-cracking waterproof agent Download PDFInfo
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- CN113307536A CN113307536A CN202110573498.0A CN202110573498A CN113307536A CN 113307536 A CN113307536 A CN 113307536A CN 202110573498 A CN202110573498 A CN 202110573498A CN 113307536 A CN113307536 A CN 113307536A
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 title claims abstract description 114
- 238000005336 cracking Methods 0.000 title claims abstract description 50
- 238000005260 corrosion Methods 0.000 claims abstract description 104
- 230000007797 corrosion Effects 0.000 claims abstract description 81
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 77
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 11
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 11
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 8
- 239000011707 mineral Substances 0.000 claims abstract description 8
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims abstract description 7
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims abstract description 7
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims abstract description 7
- 239000010881 fly ash Substances 0.000 claims abstract description 6
- SLINHMUFWFWBMU-UHFFFAOYSA-N Triisopropanolamine Chemical compound CC(O)CN(CC(C)O)CC(C)O SLINHMUFWFWBMU-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 4
- 235000019795 sodium metasilicate Nutrition 0.000 claims abstract description 4
- 229910021487 silica fume Inorganic materials 0.000 claims abstract description 3
- 230000036571 hydration Effects 0.000 claims description 30
- 238000006703 hydration reaction Methods 0.000 claims description 30
- 239000002994 raw material Substances 0.000 claims description 30
- 230000002401 inhibitory effect Effects 0.000 claims description 28
- 238000004078 waterproofing Methods 0.000 claims description 28
- 229910044991 metal oxide Inorganic materials 0.000 claims description 22
- 239000000203 mixture Substances 0.000 claims description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 19
- 230000033228 biological regulation Effects 0.000 claims description 19
- 238000002156 mixing Methods 0.000 claims description 19
- 239000010440 gypsum Substances 0.000 claims description 17
- 229910052602 gypsum Inorganic materials 0.000 claims description 17
- 235000019738 Limestone Nutrition 0.000 claims description 11
- 229910052742 iron Inorganic materials 0.000 claims description 11
- 239000006028 limestone Substances 0.000 claims description 11
- 239000005871 repellent Substances 0.000 claims description 10
- 230000008961 swelling Effects 0.000 claims description 10
- 238000001354 calcination Methods 0.000 claims description 9
- 229910052749 magnesium Inorganic materials 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 8
- 230000002940 repellent Effects 0.000 claims description 8
- 239000002893 slag Substances 0.000 claims description 8
- CBOCVOKPQGJKKJ-UHFFFAOYSA-L Calcium formate Chemical compound [Ca+2].[O-]C=O.[O-]C=O CBOCVOKPQGJKKJ-UHFFFAOYSA-L 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 7
- 229940044172 calcium formate Drugs 0.000 claims description 7
- 235000019255 calcium formate Nutrition 0.000 claims description 7
- 239000004281 calcium formate Substances 0.000 claims description 7
- 239000003638 chemical reducing agent Substances 0.000 claims description 7
- ONCZQWJXONKSMM-UHFFFAOYSA-N dialuminum;disodium;oxygen(2-);silicon(4+);hydrate Chemical compound O.[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Na+].[Na+].[Al+3].[Al+3].[Si+4].[Si+4].[Si+4].[Si+4] ONCZQWJXONKSMM-UHFFFAOYSA-N 0.000 claims description 7
- 150000001282 organosilanes Chemical class 0.000 claims description 7
- 229940080314 sodium bentonite Drugs 0.000 claims description 7
- 229910000280 sodium bentonite Inorganic materials 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000007873 sieving Methods 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 239000004567 concrete Substances 0.000 abstract description 77
- 230000003487 anti-permeability effect Effects 0.000 abstract description 23
- 238000006243 chemical reaction Methods 0.000 abstract description 19
- 230000000694 effects Effects 0.000 abstract description 19
- 239000000654 additive Substances 0.000 abstract description 15
- 230000000996 additive effect Effects 0.000 abstract description 10
- 230000009471 action Effects 0.000 abstract description 6
- 150000002500 ions Chemical class 0.000 abstract description 5
- 230000008602 contraction Effects 0.000 abstract description 3
- 230000003628 erosive effect Effects 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 26
- 238000012360 testing method Methods 0.000 description 23
- 238000002360 preparation method Methods 0.000 description 21
- 239000011575 calcium Substances 0.000 description 15
- 229910052791 calcium Inorganic materials 0.000 description 15
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 14
- 239000003112 inhibitor Substances 0.000 description 9
- 150000004706 metal oxides Chemical class 0.000 description 9
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 8
- 239000011777 magnesium Substances 0.000 description 8
- 229910052755 nonmetal Inorganic materials 0.000 description 8
- 206010042674 Swelling Diseases 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000002829 reductive effect Effects 0.000 description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 6
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 6
- 239000011083 cement mortar Substances 0.000 description 6
- 235000010755 mineral Nutrition 0.000 description 6
- 239000004568 cement Substances 0.000 description 5
- 239000004570 mortar (masonry) Substances 0.000 description 5
- 230000035515 penetration Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000010220 ion permeability Effects 0.000 description 4
- 239000000395 magnesium oxide Substances 0.000 description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- ZFXVRMSLJDYJCH-UHFFFAOYSA-N calcium magnesium Chemical compound [Mg].[Ca] ZFXVRMSLJDYJCH-UHFFFAOYSA-N 0.000 description 3
- 238000013329 compounding Methods 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000005536 corrosion prevention Methods 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 230000000979 retarding effect Effects 0.000 description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000003755 preservative agent Substances 0.000 description 2
- 230000002335 preservative effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 102100038694 DNA-binding protein SMUBP-2 Human genes 0.000 description 1
- 101000665135 Homo sapiens DNA-binding protein SMUBP-2 Proteins 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052925 anhydrite Inorganic materials 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical class [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004574 high-performance concrete Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 150000005837 radical ions Chemical class 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000002522 swelling effect Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
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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
- 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
-
- 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
- C04B2103/65—Water proofers or repellants
-
- 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
- C04B2103/67—Biocides
Abstract
The invention discloses a corrosion-resistant rust-resistant anti-cracking waterproof agent which comprises, by mass, 25-35% of a corrosion-resistant rust-resistant component, 35-55% of an expansion component and 20-30% of a waterproof and anti-permeability component; the anti-corrosion and anti-rust component comprises an anti-corrosion component and an anti-rust component in percentage by mass; the corrosion-resistant component is one or more of superfine mineral powder, superfine fly ash and superfine silica fume, and the rust-resistant component comprises one or more of sodium hexametaphosphate, triisopropanolamine, sodium carbonate and anhydrous sodium metasilicate. The invention compounds the corrosion-proof and rust-proof additive on the self-waterproof basis of the concrete structure which expands to compensate contraction and improves the waterproof and anti-permeability grade, adopts proper component proportion, can regulate and control the expansion reaction rate at 40-60 ℃, improves the waterproof and anti-permeability grade of the concrete, reduces the erosion action of harmful ions in the environment on the concrete structure, considers the three effects of corrosion resistance, rust resistance, water resistance, anti-permeability and crack resistance, and improves the engineering application effect.
Description
Technical Field
The invention relates to the field of concrete additives, in particular to a corrosion-resistant rust-resistant anti-cracking waterproof agent.
Background
At present, concrete is widely applied to various building engineering structures, and the anti-cracking and durable design of the concrete determines the safety and the service life of a building. On one hand, the shrinkage of the concrete can be compensated by adding the expanding agent, so that the crack resistance of the concrete is improved from the source, and cracks, particularly harmful cracks, can be effectively avoided; on the other hand, the waterproof and impervious component is added, so that the waterproof and impervious grade of the concrete can be improved; by combining the two improvement means, the primary factor of the structure of the concrete is crack resistance, and the waterproof and anti-permeability grade of the concrete is improved on the basis of crack resistance, so that the durability and the service life of the concrete structure are improved.
With the continuous application of concrete in special environments, such as oceans, saline-alkali, and peripheral areas with pollution risks, for example, chloride ions and sulfate ions exist, and these harmful ions can generate strong erosion action on the concrete and the internal reinforcing steel bars thereof. If not prevented, the concrete can be degraded rapidly, the service life of the building is seriously influenced, and engineering accidents and economic losses are caused. Therefore, the concrete structure under such conditions should adopt reasonable corrosion prevention and rust prevention measures on the basis of adopting the self-waterproof structure so as to slow down the corrosion action of harmful ions to the concrete under the special environment.
The general expansion agents are classified into two main types of calcium and magnesium according to expansion sources; the calcium expanding agent can be subdivided into calcium sulphoaluminates, calcium oxides and calcium sulphoaluminates-calcium oxides; magnesium expanding agents, namely magnesium oxide expanding agents; in addition, there are also some attempts to use calcium and magnesium in combination. The calcium-magnesium expanding agent has the advantages and disadvantages that: the calcium expanding agent has larger expansion energy, but the reaction rate is higher, particularly under the condition of 40-60 ℃, the reaction is finished within 1d, the temperature course of the concrete structure reaches the temperature peak within 1-2 d, the temperature peak is generally 40-60 ℃, part of high-strength grade and large volume can reach 70 ℃ or even higher, and the calcium expanding agent enters a rapid cooling and shrinking stage after 1-2 d reaches the temperature peak, at the moment, the expansion energy of the calcium expanding agent is already reacted, and the effect of compensating shrinkage matched with the shrinkage period of concrete cannot be generated; the magnesium expanding agent solves the problem that the reaction rate is too fast under the high-temperature condition of 40-60 ℃, but the expansion amount is small, and the expansion reaction can last for 1 month or even several months, so that the effective expansion energy between 2-7 d of the temperature reduction and shrinkage of concrete is limited, and the main calcined raw material magnesite resource of magnesium oxide is a national strategic resource, unlike limestone which is a calcium expanding agent, and the magnesium expanding agent has the problems that the viscosity of the concrete is increased and the workability is poor after being mixed into the concrete; the actual expansion reaction rate of the calcium-magnesium compounded expanding agent is not the average value of the calcium-magnesium reaction rates, but the calcium and the magnesium respectively keep the respective expansion reaction rates, and the expressed effects are relatively independent.
In addition, the concrete corrosion prevention and rust inhibition measures mainly include 3 types: 1) the admixture is mixed into the concrete mixture; 2) coating type external coating is carried out on the surface of concrete; 3) sulfate resistant cement is used. Wherein, the coating type is easily influenced by environmental factors, and the coating is easy to fall off; the sulfate-resistant cement has few manufacturers and higher cost; the research on the complex doping of the corrosion-resistant and rust-resistant additive and other additives, particularly the complex doping of the corrosion-resistant and rust-resistant additive and expanding agents and waterproof components has certain defects.
In the prior art, the chinese patent application CN109879630A provides a high-performance anti-corrosive concrete doped with a layered double hydroxide rust inhibitor, which is based on the principle of adsorbing acid radical ions to prevent the corrosion of the reinforced concrete. However, the application is not compounded with an expansive component, a waterproof impervious component, and a solution for preventing and controlling the crack generation of the concrete structure is not systematically considered.
For another example, the chinese patent application CN112194406A provides an HBSY-KL type temperature-inhibiting, crack-resistant, corrosion-resistant, and water-resistant additive for concrete, which can effectively improve the compactness, impermeability, corrosion resistance, and water resistance of concrete, inhibit hydration heat, and improve the early and late strength of concrete by using modified nano silica and modified polystyrene treated in a special modification manner. In terms of crack resistance, no consideration is given to compensating cracks caused by self-drying shrinkage of concrete; in terms of corrosion prevention and rust inhibition, the corrosion action on the steel bar is not explained.
For example, the Chinese granted patent CN102173637A provides a corrosion-proof and rust-proof high-performance concrete waterproofing agent, which is a multifunctional composite concrete additive, has obvious effects on self-waterproofing and rust-proof of a concrete structure, has the functions of reducing water, introducing air, preserving plastics and preventing corrosion and rust, and can be used as a concrete pumping agent, a waterproofing agent and a rust-proof agent; however, how to prevent and control concrete cracks is not specifically described in terms of self-waterproofing of concrete.
Therefore, although the prior arts respectively disclose the effects of additives doped with the corrosion-resistant and rust-inhibiting component, the expanding component and the waterproof and anti-permeability component, no means is provided for simultaneously considering the effects of corrosion resistance, rust resistance, water resistance, permeability resistance and crack resistance, and no suitable means is provided for solving the problem of the expansion reaction rate of the calcareous expanding agent at 40-60 ℃. Therefore, a new concrete additive solution is needed to solve the above technical problems.
Disclosure of Invention
The invention aims to provide a corrosion-resistant, anti-rust and anti-cracking waterproofing agent, which is used for solving the problems that the existing concrete additive cannot give consideration to the effects of corrosion resistance, rust resistance, water resistance, permeability resistance and cracking resistance and the expansion reaction rate of a calcareous expanding agent at 40-60 ℃.
In order to solve the technical problems, the solution provided by the invention is as follows: the anti-corrosion and rust-resistant type anti-cracking waterproof agent comprises, by mass, 25-35% of an anti-corrosion and rust-resistant component, 35-55% of an expansion component and 20-30% of a waterproof and anti-permeability component, and the anti-corrosion and rust-resistant type anti-cracking waterproof agent is prepared by compounding the three components in the ratio.
Wherein the anti-corrosion and anti-rust component comprises 80-98% of an anti-corrosion component and 2-20% of an anti-rust component in percentage by mass; the corrosion-resistant component is any one or a mixture of more of superfine mineral powder, superfine fly ash and superfine silica fume, and the rust-resistant component comprises any one or a mixture of more of sodium hexametaphosphate, triisopropanolamine, sodium carbonate and anhydrous sodium metasilicate; the expansion component comprises 70-95% of hydration regulation type calcareous expansion clinker and 5-30% of gypsum in percentage by mass; the waterproof and impervious component comprises, by mass, 35-70% of sodium bentonite, 8-25% of calcium formate, 10-25% of an organosilane water repellent, 2-10% of a polycarboxylic acid water reducing agent and 8-20% of sodium silicate.
Preferably, the specific surface area of the preservative component is greater than 650m2/kg。
Preferably, the anti-corrosion and rust-resistant type anti-cracking and waterproofing agent comprises 30 percent of anti-corrosion and rust-resistant component, 50 percent of expansion component and 20 percent of waterproof and anti-permeability component in percentage by mass; the anti-corrosion and rust-resisting component comprises 98 percent of anti-corrosion component and 2 percent of rust-resisting component in percentage by mass.
Preferably, the waterproof and impervious component comprises 50 percent of sodium bentonite, 15 percent of calcium formate, 15 percent of organosilane water repellent, 8 percent of polycarboxylic acid water reducer and 12 percent of sodium silicate in percentage by mass.
Preferably, the expansion component comprises 80 percent of hydration-controlled calcareous expansion clinker and 20 percent of gypsum in percentage by mass.
Preferably, the hydration regulation type calcareous expansion clinker is prepared by calcining raw materials, wherein the raw materials of the raw materials comprise, by mass, 70-80% of limestone, 5-15% of gypsum, 2-5% of iron slag, 6-15% of alumina, and 7-20% of a mixture of a non-metallic oxide or a non-metallic oxide and a metallic oxide.
Preferably, raw materials for preparing the hydration-controlled calcareous expansion clinker comprise, by mass, 72% of limestone, 7% of gypsum, 3% of iron slag, 9% of alumina, and 9% of a non-metallic oxide or a mixture of non-metallic oxide and metallic oxide.
Preferably, the specific surface areas of the raw materials for preparing the hydration-controlled calcareous expansion clinker are all more than or equal to 350m2/kg。
Preferably, the non-metal oxide is an oxide of P, and the metal oxide comprises a mixture of any one or more of Mg, Zn, Fe, Cu oxides.
Wherein, the preparation of the hydration regulation type calcareous expansion clinkerThe method comprises the following steps: uniformly mixing the raw materials for preparing the hydration regulation type calcareous expansion clinker, and adding water to prepare raw material balls; calcining the raw material balls at 1200-1400 ℃ for 25-60 min to prepare cooked material balls; grinding the clinker balls and then sieving the ground clinker balls by a sieve of 150 mu m, wherein the residue on the sieve is not more than 2 percent of the total mass, and the specific surface area is 230-330 m2Preparing hydration regulation type calcareous expansion clinker; the raw material of the raw material comprises limestone, gypsum, iron slag, alumina, and also comprises non-metal oxide or mixture of non-metal oxide and metal oxide.
The invention has the beneficial effects that: the invention provides a corrosion-resistant, anti-rust and anti-cracking waterproofing agent which is characterized in that a corrosion-resistant, anti-rust and anti-cracking additive is compounded on the basis of self-waterproofing of a concrete structure which expands to compensate contraction and improves the waterproof and anti-permeability grade, and the corrosion-resistant, anti-rust and anti-cracking component is adopted in a proper proportion, so that the expansion reaction rate can be reasonably regulated and controlled at 40-60 ℃, the waterproof and anti-permeability grade of concrete is improved, the corrosion action of a concrete structure caused by harmful ions in the environment is reduced, the three effects of corrosion resistance, rust resistance, water resistance, anti-permeability and anti-cracking are considered, and the engineering application effect is improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The invention specifically provides a corrosion-resistant and rust-resistant type anti-cracking waterproof agent which comprises, by mass, 25-35% of a corrosion-resistant and rust-resistant component, 35-55% of an expansion component and 20-30% of a waterproof and anti-permeability component, wherein the three components are compounded in the proportion to prepare the corrosion-resistant and rust-resistant type anti-cracking waterproof agent.
Wherein the anti-corrosion and anti-rust component comprises 80-98% of an anti-corrosion component and 2-20% of an anti-rust component in percentage by mass; the anticorrosive components are superfine mineral powder, superfine fly ash,The specific surface area of the anticorrosive component is more than 650m2The rust-resisting component comprises one or more of sodium hexametaphosphate, triisopropanolamine, sodium carbonate and anhydrous sodium metasilicate; the expansion component comprises 70-95% of hydration regulation type calcareous expansion clinker and 5-30% of gypsum in percentage by mass; the waterproof and impervious component comprises, by mass, 35-70% of sodium bentonite, 8-25% of calcium formate, 10-25% of an organosilane water repellent, 2-10% of a polycarboxylic acid water reducing agent and 8-20% of sodium silicate.
The further preferable mixture ratio is as follows: the anti-corrosion and rust-resistant type anti-cracking waterproof agent comprises 30% of anti-corrosion and rust-resistant component, 50% of expansion component and 20% of waterproof and anti-permeability component in percentage by mass; wherein, the anti-corrosion and anti-rust component comprises 98 percent of anti-corrosion component and 2 percent of anti-rust component; the waterproof and impervious component comprises 50% of sodium bentonite, 15% of calcium formate, 15% of organosilane water repellent, 8% of polycarboxylic acid water reducer and 12% of sodium silicate; the expansion component comprises 80% of hydration regulation type calcareous expansion clinker and 20% of gypsum.
Specifically, the hydration-regulated calcareous expansion clinker in the expansion component is prepared by calcining raw materials, wherein the raw materials of the raw materials comprise, by mass, 70-80% of limestone, 5-15% of gypsum, 2-5% of iron slag, 6-15% of alumina, and 7-20% of a mixture of a nonmetal oxide or a nonmetal oxide-metal oxide. The further preferable mixture ratio is that the raw materials for preparing the hydration regulation type calcareous expansion clinker comprise, by mass, 72% of limestone, 7% of gypsum, 3% of iron slag, 9% of alumina, and 9% of a mixture of a non-metal oxide or a non-metal oxide. Wherein the specific surface area of the raw materials for preparing the hydration-controlled calcareous expansion clinker is more than or equal to 350m2Per kg; the non-metal oxide is P oxide, and the metal oxide contains one or more of Mg, Zn, Fe and Cu oxide.
Specifically, the preparation method of the hydration regulation type calcareous expansion clinker comprises the following steps:
s1, uniformly mixing the raw materials for preparing the hydration-controlled calcium expansion clinker, and adding water to prepare raw material balls.
S2, calcining the raw material balls at 1200-1400 ℃ for 25-60 min to obtain cooked material balls; the preferred calcination temperature is 1300 ℃ and the calcination time is 30 min.
S3, grinding the clinker balls, and sieving the ground clinker balls through a 150-micron sieve, wherein the sieve residue is not more than 2 percent of the total mass, and the specific surface area is 230-330 m2And/kg, preparing the hydration regulation type calcareous expansion clinker.
The corrosion-resistant anti-cracking waterproofing agent has the advantages that the corrosion-resistant component can improve the corrosion resistance of concrete to sulfate ions and chloride ions; the expansion component can provide expansion energy required by compensation shrinkage, and the expansion reaction rate is controllable, so that the expansion component can better fit the temperature reduction shrinkage and drying shrinkage processes of concrete; the waterproof impervious component can improve the impervious pressure and the hydrophobic performance of the concrete, thereby improving the impervious grade of the concrete. The corrosion-resistant and rust-resistant type anti-cracking waterproof agent disclosed by the invention has a synergistic effect of reasonably compounding the corrosion-resistant and rust-resistant component, the expansion component and the waterproof and anti-permeability component, and can reasonably regulate and control the expansion reaction rate at 40-60 ℃ based on the calcareous expanding agent from the characteristics of the temperature history and the volume expansion shrinkage period of concrete, so that the requirements of the concrete on cracking resistance, permeability resistance, corrosion resistance and rust resistance are better met from the source.
The application effect and the advantages of the corrosion-resistant, rust-resistant, anti-cracking and waterproofing agent are described in detail by the following specific examples.
Example 1
The concrete preparation steps of the corrosion-resistant and rust-resistant anti-cracking waterproof agent in the embodiment are as follows:
(1) compounding 49 wt% of superfine mineral powder and 49 wt% of superfine fly ash into a superfine mineral admixture serving as an anticorrosive component; taking 2 wt% of sodium hexametaphosphate as an anti-rust component, and uniformly mixing with the superfine mineral admixture to obtain the anti-corrosion and anti-rust component.
(2) Uniformly mixing 72 wt% of limestone powder, 7 wt% of anhydrite, 3 wt% of iron slag powder, 9 wt% of bauxite powder and 9 wt% of mixture of non-metallic oxide and metallic oxide as raw material, and adding water to prepare raw material balls; raw materials are pelletized inCalcining at 1300 deg.C for 40min to obtain cooked pellets; grinding the clinker balls and then sieving the ground clinker balls by a sieve with the particle size of 150 mu m, wherein the sieve residue is not more than 2 percent of the total mass, and the specific surface area of the sieved material is 230-330 m2And/kg, obtaining the hydration regulation type calcareous expansion clinker. Wherein the mixture of the non-metallic oxide and the metallic oxide is compounded by phosphorus pentoxide and zinc oxide according to the mass ratio of 1:1, and the specific surface area of each raw material for preparing the hydration regulation type calcareous expansion clinker is more than or equal to 350m2Per kg; and then uniformly mixing 80 wt% of hydration regulation type calcareous expansion clinker with 20 wt% of gypsum to obtain the expansion component.
(3) Uniformly mixing 30 wt% of the corrosion-resistant and rust-resistant component, 50 wt% of the expansion component and 20 wt% of the waterproof and anti-permeability component with proper water to prepare the corrosion-resistant and rust-resistant type anti-cracking waterproof agent; the waterproof and impervious component specifically comprises 50 wt% of sodium bentonite, 15 wt% of calcium formate, 15 wt% of organosilane water repellent, 8 wt% of powdery polycarboxylic acid water reducer and 12 wt% of sodium silicate.
Example 2
In this example, based on the preparation procedure of example 1, the anticorrosive and rust-inhibiting type anti-cracking waterproofing agent was prepared by adjusting the blending ratio of anticorrosive and rust-inhibiting components to 50 wt%, the blending ratio of intumescent components to 30 wt%, and the blending ratio of waterproof and impervious components to 20 wt%, and other preparation processes and parameters were the same as those of example 1.
Example 3
In this example, based on the preparation procedure of example 1, the anticorrosive and rust-inhibiting type anti-cracking waterproofing agent was prepared by adjusting the blending ratio of anticorrosive and rust-inhibiting components to 10 wt%, the blending ratio of intumescent components to 70 wt%, and the blending ratio of waterproof and impervious components to 20 wt%, and other preparation processes and parameters were the same as those of example 1.
Example 4
In this example, based on the preparation steps of example 1, in the preparation process of the corrosion-resistant and rust-inhibiting type anti-cracking waterproof agent, the ratio of the ultrafine mineral powder is adjusted to 79 wt%, the ratio of the ultrafine fly ash is adjusted to 19 wt%, the ratio of the sodium hexametaphosphate is adjusted to 2 wt%, and other preparation processes and parameters are consistent with those in example 1.
Example 5
In this example, based on the preparation procedure of example 1, the anticorrosive and rust-inhibiting type anti-cracking waterproofing agent was prepared by adjusting the blending ratio of the anticorrosive and rust-inhibiting components to 30 wt%, the blending ratio of the intumescent components to 60 wt%, and the blending ratio of the waterproof and impervious components to 10 wt%, and other preparation processes and parameters were the same as those of example 1.
Example 6
In this example, based on the preparation procedure of example 1, the formulation ratio of the corrosion-resistant and rust-inhibiting type of anti-cracking waterproofing agent was adjusted to 30 wt%, the formulation ratio of the swelling component was adjusted to 30 wt%, the formulation ratio of the water-resistant and anti-permeability component was adjusted to 40 wt%, and other preparation processes and parameters were the same as those of example 1.
Example 7
In this example, based on the preparation steps of example 1, in the preparation process of the expansion component, the proportion of the hydration-controlled calcareous expansion clinker is adjusted to 90 wt%, the proportion of the gypsum is adjusted to 10 wt%, and other preparation processes and parameters are consistent with those of example 1.
Comparative example 1
The comparative example is based on the preparation steps of the example 1, and is different in that only the anticorrosive component is contained and the rust-inhibiting component is not contained, and the limestone powder accounting for 2 wt% of the rust-inhibiting component replaces the filling, and other preparation processes and parameters are consistent with those of the example 1.
Comparative example 2
When the anticorrosion and rust-resistant type anti-cracking waterproof agent is prepared by the comparative example, based on the preparation steps of the example 1, the difference is that only the anticorrosion component is contained but not the anticorrosion component, 98 wt% of limestone powder in the anticorrosion component is used for replacing the filling, the anticorrosion component still accounts for 2 wt% of the anticorrosion and rust-resistant component, and other preparation processes and parameters are consistent with those of the example 1.
Comparative example 3
In this comparative example, a commercially available calcium sulfoaluminate-calcium oxide (HCSA) concrete expansive agent was used.
Comparative example 4
This comparative example used a commercially available magnesium oxide expander at a calcination temperature of 1000 ℃.
Comparative example 5
The comparative example adopts a commercially available waterproof agent which meets the standard requirements of JC-474 mortar and concrete waterproof agents.
Comparative example 6
The comparative example adopts a commercially available expansion source which is a calcium sulphoaluminate-calcium oxide expansion anti-cracking waterproof agent, and simultaneously meets the requirements of type II products of GB/T-23439 concrete expanding agent and the standard requirements of JC-474 mortar and concrete waterproof agent.
Comparative example 7
The comparative example adopts the commercially available concrete corrosion and rust inhibitor, and meets the full performance index of AB type products in GB/T31296 corrosion and rust inhibitor.
The additives obtained in examples 1 to 7 and comparative examples 1 to 7 were subjected to the following three performance tests. The concrete mixing proportion is determined according to the regulations of GB/T-8076 concrete admixture, GB/T31296 anti-corrosion rust inhibitor and JC 474 mortar and concrete waterproof agent, and the concrete mixing proportion selected by tests is shown in Table 1. In the table 1, the cement uses reference cement, the fineness modulus of river sand is 2.68, the corrosion electric quantity ratio, the chloride ion permeability coefficient ratio and the sulfate corrosion coefficient ratio in the coarse aggregate are I-type broken stones with the thickness of 5-10 mm, and the water consumption of the concrete is a fixed value; the penetration height ratio, the water absorption capacity ratio and the compression strength ratio are 5-20 mm of continuously graded broken stones, and the water consumption of the concrete is based on the minimum consumption reaching the required slump.
TABLE 1 test concrete mix proportion table (kg/m)3)
Test experiment 1
The test experiment is mainly used for carrying out test analysis on the degree of the limited expansion rate of the cement mortar, the test is carried out according to the requirements in GB/T-23439 concrete expanding agent, and the additives of examples 1-7 and comparative examples 1-7 are respectively mixed into the cement mortar according to the proportion of 10%; the difference is that the limited expansion rates of cement mortar of different ages of test pieces under the water curing conditions of 20 ℃, 40 ℃ and 60 ℃ are tested simultaneously. When the test specimen reaches the test age, the test specimen is taken out of water at 40 and 60 ℃, placed in a standard culture room (box) meeting the GB/T-23439 requirement, cooled for 3 hours and measured. The results of checking the restricted expansion ratio of the cement mortars of the respective examples and comparative examples are shown in table 2.
TABLE 2 detection results of restricted expansion ratio of cement mortar
From the results of table 2, it can be seen that:
(1) comparative example 3 is a commercial calcareous expanding agent, comparative example 6 is a commercial calcareous expanding agent and waterproof agent dual-standard product, the limited expansion rates of the two products are not obviously different in 1d, 3d and 7d under the water curing conditions of 20 ℃, 40 ℃ and 60 ℃, but the expansion reactions of the two products are almost completely finished in 1d under the water curing conditions of 40 ℃ and 60 ℃; the comparative example 4 is a magnesium oxide expanding agent, and the expansion reaction development of 1d, 3d and 7d is obviously slowed down under the water curing conditions of 20 ℃, 40 ℃ and 60 ℃, but the expansion amount is obviously smaller; therefore, the calcium expanding agent sold in the market has the advantage of large expansion energy, but the early expansion reaction rate is too high under the condition of 40-60 ℃, so that the concrete is easy to shrink and crack under the condition of 40-60 ℃.
(2) The difference between examples 2-4 and example 1 is that the corrosion and rust inhibiting component and the expanding component are different, and the corrosion and rust inhibiting component is changed, especially in examples 2-3, the corrosion and rust inhibiting component has a certain retardation effect on the setting and the stripping of the cement, so that the expansion loss of the expanding component in the early plastic stage is larger when the ratio of the corrosion and rust inhibiting component is more. Example 4 compared to example 1, the only change was the preservative component, which was not retarding, had no significant effect on demold time and also on the development of swelling.
(3) The difference between the embodiment 7 and the embodiment 1 is that the proportion of the hydration-controlled calcareous expansion clinker and the gypsum in the expansion component is changed, and the clinker and the gypsum have better proportion, so that the restriction on the expansion rate and the expansion process thereof are influenced to a certain extent;
(4) the difference between the examples 5 and 6 and the example 1 is that the proportion of the expansion component and the waterproof component is adjusted, the content of the expansion component is increased, and the expansion rate is limited to be obviously increased; since the corrosion and rust inhibiting components and the swelling components contained in examples 5 and 6 are not in the proper ratio range, the early swelling reaction rate of example 5 is too high compared with that of example 1, the swelling amount of example 6 is lower compared with that of example 1, and the ratio of the swelling component to the water-proofing component in example 1 is proper under the condition of 40-60 ℃.
(5) Comparing comparative examples 1 and 2 with example 1, it can be found that when the rust inhibitive component having a retarding effect is eliminated, the expansion rate is remarkably improved, and the anticorrosive component does not affect the normal coagulation, so that the presence or absence thereof does not affect the limiting expansion rate; comparative examples 5 and 7 are a commercially available water repellent and corrosion and rust inhibitor, respectively, which have no significant swelling effect because they do not contain a swelling component.
In conclusion, the mortar doped with the corrosion-resistant and rust-resistant anti-cracking waterproof agent can generate volume expansion more uniformly and linearly at 20 ℃, 40 ℃ and 60 ℃, is more matched with the cooling stage (1-7 days and 40-60 ℃) of a concrete structure, and better plays a role in compensating shrinkage.
Test experiment 2
The test experiment mainly aims at the compression strength ratio, the water absorption ratio and the penetration height ratio of the concrete, the test is carried out according to the regulation of JC-474 'mortar and concrete waterproofing agent', cement mortar without any admixture is used as a blank control, and the test data of the compression strength ratio, the water absorption ratio and the penetration height ratio of the tested concrete are shown in the following table 3.
TABLE 3 test results of concrete compressive strength ratio, water absorption ratio and penetration height ratio
As can be seen from Table 5, comparative examples 3, 4 and 7 contain no water-repellent component, so the water absorption ratio and the permeation height ratio are high and no significant water-repellent effect is exhibited; the compressive strength of the corrosion-resistant rust-resistant anti-cracking waterproof agent doped in the invention is equivalent to that of a blank contrast, a commercially available expanding agent, a commercially available waterproof agent and a commercially available expanded waterproof double-standard product, and no obvious difference exists, so that the corrosion-resistant rust-resistant anti-cracking waterproof agent has better compressive strength; the test data of the water absorption capacity ratio and the penetration height ratio can represent the waterproof and anti-permeability performance of the additive when in application, and as can be seen from the table 5, except for the embodiment 5 that the waterproof component proportion is reduced from 20 wt% to 10 wt%, the waterproof and anti-permeability performance is reduced, the waterproof and anti-permeability performance of other embodiments can meet the requirement of JC-474 concrete waterproof agent, and the waterproof and anti-permeability performance of concrete is effectively improved.
Example 2 is to increase the amount of the rust inhibitor, and because the sodium hexametaphosphate as the rust inhibitor has a strong retarding effect when the mixing amount is high, the strength in the early 3d period is reduced, and the strength in the middle and later periods has no obvious influence on blank control.
Test experiment 3
The test experiment is mainly used for testing and analyzing the concrete corrosion electric quantity ratio, the chloride ion permeability coefficient ratio and the sulfate corrosion coefficient ratio, the test is carried out according to the regulation in GB/T31296 corrosion and rust inhibitor, and the test data is shown in the following table 4.
TABLE 4 concrete corrosion electric quantity ratio, chloride ion permeability coefficient ratio, sulfate corrosion coefficient ratio test results
From the above table 4, it can be seen that the concrete doped with the corrosion-resistant rust-resistant anti-cracking waterproofing agent meets the index requirements of AB type products in GB/T31296 anticorrosive rust-resistant agent in the corrosion electric quantity ratio, chloride ion permeability coefficient ratio and sulfate corrosion coefficient ratio.
In the embodiment 2, the proportion of the corrosion-resistant and rust-resistant components is increased, which is beneficial to further improving the effects of the three performance indexes; the proportion of the corrosion-resistant and rust-proof components is reduced in the embodiment 3, and the three performance indexes are obviously reduced; when the proportion of the two components in the anticorrosive component is changed in the embodiment 4, the three performance indexes are not obviously influenced; in examples 5 to 7, the change of other non-anticorrosive and rust-inhibiting components did not have any significant effect on the anticorrosive and rust-inhibiting properties.
The comparative examples 1 and 2 show that after one of the corrosion and rust preventing components is deleted, the corrosion and rust preventing performance of the corrosion and rust preventing component is obviously influenced; comparative examples 3 to 6 are commercially available admixtures containing no corrosion and rust preventing components, and have no corrosion and rust preventing performance; the corrosion and rust resistance of the concrete in the embodiments 1 to 7 are equivalent to that of the comparative example 7, the requirements of GB/T31296 corrosion and rust inhibitor are met, and the corrosion and rust resistance of the concrete is effectively improved.
The test experiments 1-3 show that the corrosion-resistant, rust-resistant and anti-cracking waterproof agent can reasonably regulate and control the expansion reaction rate at 40-60 ℃, and has the effects of corrosion resistance, rust resistance, water resistance, permeability resistance and cracking resistance.
The invention provides a corrosion-resistant, anti-rust and anti-cracking waterproofing agent which is characterized in that a corrosion-resistant, anti-rust and anti-cracking additive is compounded on the basis of self-waterproofing of a concrete structure which expands to compensate contraction and improves the waterproof and anti-permeability grade, and the corrosion-resistant, anti-rust and anti-cracking component is adopted in a proper proportion, so that the expansion reaction rate can be reasonably regulated and controlled at 40-60 ℃, the waterproof and anti-permeability grade of concrete is improved, the corrosion action of a concrete structure caused by harmful ions in the environment is reduced, the three effects of corrosion resistance, rust resistance, water resistance, anti-permeability and anti-cracking are considered, and the engineering application effect is improved.
It should be noted that the above embodiments belong to the same inventive concept, and the description of each embodiment has a different emphasis, and reference may be made to the description in other embodiments where the description in individual embodiments is not detailed.
The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. The corrosion-resistant rust-resistant anti-cracking waterproof agent is characterized by comprising, by mass, 25-35% of a corrosion-resistant rust-resistant component, 35-55% of an expansion component and 20-30% of a waterproof impervious component;
the anti-corrosion and anti-rust component comprises 80-98% of an anti-corrosion component and 2-20% of an anti-rust component in percentage by mass;
the corrosion-resistant component is any one or a mixture of more of superfine mineral powder, superfine fly ash and superfine silica fume, and the rust-resistant component comprises any one or a mixture of more of sodium hexametaphosphate, triisopropanolamine, sodium carbonate and anhydrous sodium metasilicate;
the expansion component comprises 70-95% of hydration regulation type calcareous expansion clinker and 5-30% of gypsum by mass percent;
the waterproof and impervious component comprises, by mass, 35-70% of sodium bentonite, 8-25% of calcium formate, 10-25% of an organosilane water repellent, 2-10% of a polycarboxylic acid water reducing agent and 8-20% of sodium silicate.
2. The anticorrosive, rust-inhibiting, anti-cracking and waterproofing agent according to claim 1, wherein the anticorrosive, rust-inhibiting, anti-cracking and waterproofing agent comprises, in mass percent, 30% of anticorrosive, rust-inhibiting component, 50% of swelling component, and 20% of waterproof and impervious component;
the anti-corrosion and rust-resistant component comprises 98 percent of anti-corrosion component and 2 percent of rust-resistant component in percentage by mass;
the specific surface area of the anticorrosion component is more than 650m2/kg。
3. The anticorrosive, rust-inhibiting, anti-cracking and waterproofing agent according to claim 2, wherein the water-proofing and impervious component comprises 50% by mass of sodium bentonite, 15% by mass of calcium formate, 15% by mass of an organosilane water repellent, 8% by mass of a polycarboxylic acid water reducing agent and 12% by mass of sodium silicate.
4. The anticorrosive, rust-inhibiting, anti-cracking and waterproofing agent according to claim 2, wherein the swelling component comprises 80% of hydration-controlled calcareous swelling clinker and 20% of gypsum in percentage by mass.
5. The anticorrosive, rust-inhibiting, anti-cracking and waterproofing agent according to claim 4, wherein the hydration-regulated calcareous expanded clinker is prepared by calcining raw materials comprising, by mass, 70 to 80% of limestone, 5 to 15% of gypsum, 2 to 5% of iron slag, 6 to 15% of alumina, and 7 to 20% of a mixture of a non-metallic oxide or a non-metallic oxide and a metallic oxide.
6. The anticorrosive, rust-inhibiting, anti-cracking and waterproofing agent according to claim 5, wherein the raw materials for preparing the raw material of the hydration-regulated calcareous expanded clinker comprise, in mass percent, 72% of limestone, 7% of gypsum, 3% of iron slag, 9% of alumina, and 9% of a non-metallic oxide or a mixture of a non-metallic oxide and a metallic oxide.
7. The anticorrosive, rust-inhibiting, anti-cracking and waterproofing agent according to claim 6, wherein the raw materials for preparing the hydration-regulated calcareous expansive clinker each have a specific surface area of 3 or more50m2/kg。
8. The corrosion-resistant, rust-resistant, anti-cracking and waterproofing agent according to claim 6, wherein the non-metallic oxide is an oxide of P, and the metallic oxide comprises a mixture of any one or more of oxides of Mg, Zn, Fe and Cu.
9. The corrosion-resistant rust-resistant anti-cracking waterproof agent according to claim 6, wherein the hydration-controlled calcareous expanded clinker is prepared by the steps of:
uniformly mixing the raw materials for preparing the hydration regulation type calcareous expansion clinker, and adding water to prepare raw material balls;
calcining the raw material balls at 1200-1400 ℃ for 25-60 min to prepare cooked material balls;
grinding the clinker balls and then sieving the ground clinker balls by a sieve of 150 mu m, wherein the residue on the sieve is not more than 2 percent of the total mass, and the specific surface area is 230-330 m2And/kg, preparing the hydration regulation type calcareous expansion clinker.
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