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CN119059783A - A cement adhesive and its preparation method and application - Google Patents

A cement adhesive and its preparation method and application Download PDF

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Publication number
CN119059783A
CN119059783A CN202411569803.9A CN202411569803A CN119059783A CN 119059783 A CN119059783 A CN 119059783A CN 202411569803 A CN202411569803 A CN 202411569803A CN 119059783 A CN119059783 A CN 119059783A
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China
Prior art keywords
cement
water
titanium oxide
agent
mass
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CN202411569803.9A
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Chinese (zh)
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CN119059783B (en
Inventor
岳永刚
范永强
王黎明
曹彬
孟祥光
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Inner Mongolia Ultra High Voltage Power Supply Branch Of Inner Mongolia Electric Power Group Co ltd
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Inner Mongolia Ultra High Voltage Power Supply Branch Of Inner Mongolia Electric Power Group Co ltd
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Priority to CN202411569803.9A priority Critical patent/CN119059783B/en
Publication of CN119059783A publication Critical patent/CN119059783A/en
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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
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/06—Aluminous cements
    • 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
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/16—Sulfur-containing compounds
    • 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
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/16—Sulfur-containing compounds
    • C04B24/20—Sulfonated aromatic compounds
    • 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
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/24—Macromolecular compounds
    • C04B24/34—Natural resins, e.g. rosin
    • 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
    • C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
    • C04B2103/304—Air-entrainers
    • 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
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00637—Uses not provided for elsewhere in C04B2111/00 as glue or binder for uniting building or structural materials
    • 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
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

The invention provides a cement adhesive, a preparation method and application thereof, and belongs to the technical field of cement adhesives. The cement adhesive comprises the following components of aluminate cement, artificial porcelain sand, titanium oxide, silica micropowder, an external admixture and water, wherein the cement adhesive has a water cement ratio of 0.1-0.2, the external admixture comprises an air entraining agent, a water reducing agent, an antifreezing agent, an reinforcing agent and a steep wave performance improving agent, the water reducing agent is a high-efficiency polycarboxylate water reducing agent, and the mass of the reinforcing agent is 0.1-0.3% of the total mass of the aluminate cement, the artificial porcelain sand, the titanium oxide and the silica micropowder. The air entraining agent can absorb frost heaving stress in cold areas, reduce damage degree of cement adhesive, reduce formation of pores and cracks, absorb partial stress during shrinkage of cement adhesive in drying process, improve cold resistance, and reduce cold resistance by limiting water-cement ratio to control water consumption.

Description

Cement adhesive and preparation method and application thereof
Technical Field
The invention belongs to the technical field of cement cements, and particularly relates to a cement, a preparation method and application thereof.
Background
In severe cold areas, the extremely low temperature may adversely affect the properties of the porcelain insulator cement binder. The quality of the cement adhesive is improved, the cold resistance of the cement adhesive can be enhanced, and good cohesiveness and durability can be ensured to be maintained under the extremely low temperature condition. Thus, the adhesive can be prevented from cracking, failing or degrading due to temperature change, thereby ensuring the normal operation and reliability of the insulator.
The components of the existing cement adhesive mainly comprise aluminate cement, artificial porcelain sand, halloysite, titanium oxide and an external admixture, but the cold resistance is poor, and when the cement adhesive is used in a severe cold area, the cement adhesive can crack or peel due to temperature change. Therefore, how to improve the cement binder to improve the cold resistance thereof is a technical problem to be solved in the art.
Disclosure of Invention
The invention aims to provide a cement adhesive, a preparation method and application thereof. The cement adhesive provided by the invention can improve the cold resistance of the cement adhesive.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a cement adhesive, which comprises the following components of aluminate cement, artificial porcelain sand, titanium oxide, silica micropowder, external admixture and water;
the cement adhesive has a water-cement ratio of 0.1-0.2;
the external admixture comprises an air entraining agent, a water reducing agent, an antifreezing agent, an enhancer and a steep wave performance improving agent;
the water reducer is a high-efficiency polycarboxylate water reducer;
the mass of the reinforcing agent is 0.1-0.3% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and silicon micropowder.
Preferably, the mass of the aluminate cement is 45-60% of the total mass of the aluminate cement, the artificial porcelain sand, the titanium oxide and the silicon micropowder.
Preferably, the mass of the artificial porcelain sand is 35-50% of the total mass of aluminate cement, the artificial porcelain sand, titanium oxide and the silicon micro powder.
Preferably, the mass of the titanium oxide is 1-3% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and silicon micropowder.
Preferably, the particle size of the titanium oxide is 20-80 nm.
Preferably, the mass of the air entraining agent is 0.005-0.01% of the mass of aluminate cement.
Preferably, the air entraining agent comprises at least one of rosin resins, alkyl sulphonic acids, alkyl aromatic sulphonic acids and fatty alcohol sulphonates.
The invention also provides a preparation method of the cement adhesive, which comprises the following steps:
Mixing aluminate cement, artificial porcelain sand, titanium oxide, silica micropowder, external admixture and water to obtain the cement adhesive.
The invention also provides application of the cement adhesive in the technical scheme or the cement adhesive prepared by the preparation method in the alpine region in the antifouling porcelain insulator.
Preferably, the application comprises pouring cement glue into the antifouling porcelain insulator in alpine regions, and then steaming and water curing sequentially.
The invention provides a cement adhesive, which comprises the following components of aluminate cement, artificial porcelain sand, titanium oxide, silica micropowder, an external admixture and water, wherein the cement adhesive has a water cement ratio of 0.1-0.2, the external admixture comprises an air entraining agent, a water reducing agent, an antifreezing agent, an reinforcing agent and a steep wave performance improving agent, the water reducing agent is a high-efficiency polycarboxylate water reducing agent, and the mass of the reinforcing agent is 0.1-0.3% of the total mass of the aluminate cement, the artificial porcelain sand, the titanium oxide and the silica micropowder. The air entraining agent is added, air bubbles formed by the air entraining agent can absorb frost heaving stress in cold areas to reduce the damage degree of cement adhesive, the air bubbles can also prevent water penetration and reduce the formation of pores and cracks, meanwhile, in the drying process, the air bubbles can absorb a part of stress when the cement adhesive contracts to reduce the contraction degree and reduce the occurrence probability of cracks, so that the cold resistance of the cement adhesive is improved, the water consumption can be controlled by limiting the range of the water-cement ratio, the excessive content of the freezeable water in the cement adhesive, the too high freezing speed, the deterioration of the air bubble structure, the excessive average air bubble spacing and the reduction of the cold resistance are avoided. Experimental results show that the cement adhesive provided by the invention can obviously improve the cold resistance while guaranteeing the working performance and strength.
Drawings
FIG. 1 shows the compressive strength of the cements prepared in example 1 and comparative examples 1-2;
FIG. 2 shows the flexural strength of the cements prepared in example 1 and comparative examples 1-2;
FIG. 3 shows the compressive strength of the cement paste prepared in example 2;
FIG. 4 shows the flexural strength of the cement paste prepared in example 2;
FIG. 5 shows the compressive strength of application example 1 and comparative application example 1;
FIG. 6 shows flexural strength of application example 1 and comparative application example 1;
fig. 7 shows the elastic modulus of the cement cements prepared in examples 4 to 5 and comparative examples 4 to 5 after the freezing resistance test for 28 days.
Detailed Description
The invention provides a cement adhesive, which comprises the following components of aluminate cement, artificial porcelain sand, titanium oxide, silica micropowder, external admixture and water;
the cement adhesive has a water-cement ratio of 0.1-0.2;
the external admixture comprises an air entraining agent, a water reducing agent, an antifreezing agent, an enhancer and a steep wave performance improving agent;
the water reducer is a high-efficiency polycarboxylate water reducer;
the mass of the reinforcing agent is 0.1-0.3% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and silicon micropowder.
The source of each raw material is not particularly limited, and commercially available products known to those skilled in the art may be used.
In the present invention, the cement binder includes aluminate cement. In the invention, the aluminate cement is a matrix material.
As an embodiment, the aluminate cement may be CA50-II aluminate cement.
In the invention, the cement adhesive further comprises artificial porcelain sand, wherein the grain size of the artificial porcelain sand is preferably 30-80 meshes. In the invention, the artificial porcelain sand has good wear resistance, corrosion resistance and high temperature resistance, and can effectively improve the fluidity of cement adhesive.
In the invention, the cement adhesive further comprises titanium oxide, and the particle size of the titanium oxide is preferably 20-80 nm. In the invention, the titanium oxide can obviously improve the mechanical property and cold resistance of the cement adhesive in the cement adhesive, and the nano-size can accelerate the hydration of the cement, reduce the setting time and enhance the mechanical property.
In the invention, the cement adhesive further comprises silica micropowder, the particle size of the silica micropowder is preferably 0.1-0.2 mu m, and the content of SiO 2 in the silica micropowder is preferably more than or equal to 90.0wt%. In the invention, the silicon micropowder can obviously improve the mechanical property and cold resistance of the cement adhesive.
The total mass of the aluminate cement, the artificial porcelain sand, the titanium oxide and the silicon micro powder is 100%, the mass content of the aluminate cement is preferably 45-60%, the mass content of the artificial porcelain sand is preferably 35-50%, the mass content of the titanium oxide is preferably 1-3%, and the mass of the silicon micro powder is preferably the rest. The invention limits the content of aluminate cement, artificial porcelain sand, titanium oxide and silicon micropowder in the above range, and can further improve the cold resistance of the cement adhesive.
As an implementation mode, the total mass of the aluminate cement, the artificial porcelain sand, the titanium oxide and the silicon micro powder is 100%, the mass content of the aluminate cement can be 50-55%, the mass content of the artificial porcelain sand can be 43-45%, the mass content of the titanium oxide can be 2%, and the mass content of the silicon micro powder can be 5%.
In the invention, the cement adhesive also comprises an external admixture, and the external admixture comprises an air entraining agent. In cold areas, the air bubbles formed by the air entraining agent can absorb frost heaving stress and reduce the damage degree of the cement adhesive, the air bubbles can also prevent water penetration and reduce the formation of pores and cracks, and meanwhile, in the drying process, the air bubbles can also absorb part of stress when the cement adhesive contracts, so that the contraction degree is reduced, the occurrence probability of the cracks is reduced, and the cold resistance of the cement adhesive is improved.
In the invention, the mass of the air entraining agent is preferably 0.005-0.01% of that of aluminate cement, and the air entraining agent preferably comprises at least one of rosin resin, alkyl sulfonic acid, alkyl aromatic sulfonic acid and fatty alcohol sulfonate. The invention limits the mass of the air entraining agent in the above range, and can further improve the cold resistance of the cement adhesive.
As an implementation mode, the mass of the air entraining agent can be 0.006-0.008% of that of aluminate cement, and the air entraining agent can be AE330 air entraining agent.
In the present invention, the external admixture further includes a water reducing agent, an antifreezing agent, an enhancer and a steep wave performance improving agent.
In the invention, the water reducer is a high-efficiency polycarboxylate water reducer, and the mass of the water reducer is preferably 0.1-0.3% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and silica micropowder. In the preparation process of the cement adhesive, the high-efficiency polycarboxylate water reducer can be used for remarkably improving the performance of the cement adhesive, and the water reducer can be used for effectively reducing the void ratio in the cement paste, so that the compactness of the paste is improved, the strength of the cement adhesive is improved, the compression resistance of the cement adhesive is also improved, and the high-efficiency polycarboxylate water reducer can be used for improving the overall performance of the cement adhesive while ensuring the construction performance, so that the cement adhesive is more suitable for various engineering requirements.
In the present invention, the water reducing agent is preferably a polycarboxylic acid water reducing agent having acrylic acid/methacrylic acid as a main chain or a polycarboxylic acid water reducing agent having maleic anhydride as a main chain. The source of the water reducer is not particularly limited, and the water reducer is a high-efficiency polycarboxylate water reducer well known to those skilled in the art.
As an implementation mode, the mass of the water reducing agent can be 0.1-0.2% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and silicon micropowder.
In the invention, the antifreezing agent is preferably organic alcohol, and the mass of the antifreezing agent is preferably 0.1-0.3% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and silicon micropowder. In the invention, the antifreezing agent can improve the antifreezing effect of the cement adhesive.
As an implementation mode, the mass of the antifreezing agent can be 0.2-0.25% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and silicon micropowder.
In the invention, the reinforcing agent is preferably polypropylene fiber, the diameter of the polypropylene fiber is preferably 0.02-0.04 mm, the length of the polypropylene fiber is preferably 2-3 mm, and the mass of the reinforcing agent is 0.1-0.3% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and silica micropowder. The reinforcing agent has the characteristics of high strength, high modulus and the like, can effectively improve the fracture resistance of the cement adhesive, can prevent the fracture resistance from decreasing along with the increase of age, thereby ensuring the stability of the cement adhesive in different use stages, and can keep good performance of the cement adhesive in the long-term use process by adopting polypropylene fibers as the reinforcing agent so as to meet various engineering requirements.
As an implementation mode, the mass of the reinforcing agent can be 0.2-0.25% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and silicon micropowder.
In the invention, the steep wave performance improver is preferably sodium chloride, and the mass of the steep wave performance improver is preferably 0.02-0.05% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and silicon micropowder. In the present invention, the steep wave performance improver can improve the steep wave performance of cement binder.
As an implementation mode, the quality of the steep wave performance improver can be 0.03-0.04% of the total quality of aluminate cement, artificial porcelain sand, titanium oxide and silicon micropowder.
In the present invention, the cement paste further comprises water. In the present invention, the water is a solvent.
In the invention, the cement binder has a water-cement ratio of 0.1 to 0.2, preferably 0.14 to 0.19, more preferably 0.15 to 0.18. In the invention, the water consumption can be controlled by limiting the range of the water-cement ratio, so that excessive content of the water capable of freezing in the cement adhesive is avoided, the freezing speed is too high, the bubble structure is poor, the average bubble spacing is too large, and the cold resistance is reduced.
The air entraining agent is added, air bubbles formed by the air entraining agent can absorb frost heaving stress in cold areas to reduce the damage degree of cement adhesive, the air bubbles can also prevent water penetration and reduce the formation of pores and cracks, meanwhile, in the drying process, the air bubbles can absorb a part of stress when the cement adhesive contracts to reduce the contraction degree and reduce the occurrence probability of cracks, so that the cold resistance of the cement adhesive is improved, the water consumption can be controlled by limiting the range of the water-cement ratio, the excessive content of the freezeable water in the cement adhesive, the too high freezing speed, the deterioration of the air bubble structure, the excessive average air bubble spacing and the reduction of the cold resistance are avoided.
The invention also provides a preparation method of the cement adhesive, which comprises the following steps:
Mixing aluminate cement, artificial porcelain sand, titanium oxide, silica micropowder, external admixture and water to obtain the cement adhesive.
The invention is not particularly limited in the operation of mixing the aluminate cement, the artificial porcelain sand, the titanium oxide, the silica micropowder, the external admixture and the water, and adopts the technical scheme for preparing the mixed materials which is well known to the person skilled in the art.
The preparation method provided by the invention has simple process and is suitable for industrial production.
The invention also provides application of the cement adhesive in the technical scheme or the cement adhesive prepared by the preparation method in the alpine region in the antifouling porcelain insulator.
In the invention, the cement adhesive is preferably coated with a buffer layer on the surface of the antifouling porcelain insulator in the alpine region before application, and the buffer layer is preferably made of asphalt. The thickness of the buffer layer is not particularly limited in the present invention, and an operation well known to those skilled in the art is adopted. According to the invention, the buffer layer is coated on the surface of the antifouling porcelain insulator in the alpine region, so that the electrical performance of the cement adhesive can be improved.
In the present invention, the application preferably comprises casting cement glue into the antifouling porcelain insulator in alpine regions, and then steam curing and water curing in sequence.
The operation of pouring the cement binder into the antifouling porcelain insulator in the alpine region is not particularly limited, and the operation well known to those skilled in the art can be adopted.
In the invention, the steam curing temperature is preferably 45-55 ℃, the steam curing time is preferably 5-6 h, the water curing temperature is preferably 20-30 ℃, and the water curing time is preferably 5-6 h. The invention adopts a composite curing mode of steam curing and water curing in sequence, in which the cement adhesive is cured by steam to quickly reach a certain strength, and then the water curing is carried out to ensure the stability of the cement adhesive in the later use process, and the reduction of the flexural strength of the cement adhesive in the middle and later stages can be effectively reduced by the composite curing mode, so that the integral performance of the cement adhesive is improved.
As an implementation mode, the steam curing temperature can be 50-55 ℃, and the water curing temperature can be 25-30 ℃.
The technical solutions of the present invention will be clearly and completely described in the following in connection with the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The cement adhesive comprises aluminate cement, artificial porcelain sand, titanium oxide, silica micropowder, external admixture and water;
The external admixture is an air entraining agent, a water reducing agent, an antifreezing agent, an enhancer and a steep wave performance improving agent;
The mass of the aluminate cement is 50% of the total mass of the aluminate cement, the artificial porcelain sand, the titanium oxide and the silicon micropowder, and the model is CA50-II type aluminate cement;
The mass of the artificial porcelain sand is 43% of the total mass of aluminate cement, the artificial porcelain sand, titanium oxide and silicon micropowder, and the particle size is 30-80 meshes;
The mass of the titanium oxide is 2% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and silicon micropowder, and the particle size is 20-80 nm;
The mass of the silicon micro powder is 5% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and the silicon micro powder, the particle size of the silicon micro powder is 0.1-0.2 mu m, and the content of SiO 2 in the silicon micro powder is 98wt%;
the mass of the air entraining agent is 0.008% of that of aluminate cement, and the air entraining agent is AE330 air entraining agent;
the water reducer is an XCA-100 polycarboxylic acid high-performance water reducer, and the mass of the water reducer is 0.2% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and silica micropowder;
the antifreezing agent is organic alcohol, and the mass is 0.1% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and silicon micropowder;
The reinforcing agent is polypropylene fiber, the diameter is 0.02-0.04 mm, the length is 2.5mm, and the mass is 0.2% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and silicon micropowder;
The steep wave performance improver is sodium chloride, and the mass of the steep wave performance improver is 0.04% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and silicon micropowder;
The cement adhesive has a water-cement ratio of 0.13;
The preparation method of the cement adhesive comprises the following steps:
Mixing aluminate cement, artificial porcelain sand, titanium oxide, silica micropowder, external admixture and water to obtain the cement adhesive.
Comparative example 1
The titanium oxide is omitted on the basis of the embodiment 1, the quality of the artificial porcelain sand is modified to 45 percent of the total mass of aluminate cement, the artificial porcelain sand, the titanium oxide and the silica micropowder, the water cement ratio is modified to 0.19, and other conditions are unchanged.
Comparative example 2
The artificial porcelain sand is modified into river sand on the basis of the embodiment 1, the water cement ratio is modified into 0.14, and other conditions are unchanged.
The cement cements prepared in example 1 and comparative examples 1 to 2 were subjected to performance test after being subjected to water curing at 25 ℃ for 5 hours, flexural strength, compressive strength, dry shrinkage test and the like were tested according to JB/T4307-2004 "cement Cement Adhesives for insulator", the fluidity of the cement Adhesives was tested according to GB/T2419-2005 "cement mortar fluidity measurement method", the results are shown in tables 1 to 2, FIG. 1 and FIG. 2, FIG. 1 is the compressive strength of the cement Adhesives prepared in example 1 and comparative examples 1 to 2, and FIG. 2 is the flexural strength of the cement Adhesives prepared in example 1 and comparative examples 1 to 2.
TABLE 1 Performance data of the cements prepared in example 1 and comparative examples 1-2
TABLE 2 Performance data of the cements prepared in example 1 and comparative examples 1-2
As can be seen from tables 1-2, fig. 1 and fig. 2, the flexural strength of the cement adhesive of the invention can be improved by 14.5MPa, the compressive strength can be improved by 34MPa, and the problem of the reduction of the flexural strength in the middle and later stages of the cement adhesive can be remarkably improved.
Example 2
The mass content of the reinforcing agent was modified to 0.1% on the basis of example 1, with the other conditions unchanged.
The cement paste prepared in example 2 was subjected to a performance test after being subjected to water curing at 25 ℃ for 5 hours according to the test method of example 1, and the results are shown in table 3, fig. 3 and fig. 4, fig. 3 being the compressive strength of the cement paste prepared in example 2, and fig. 4 being the flexural strength of the cement paste prepared in example 2.
TABLE 3 Performance data of the cements prepared in example 2
As can be seen from table 3, fig. 3 and fig. 4, the present invention can significantly improve the strength of cement cements and effectively prevent the decrease of flexural strength with the increase of age.
Example 3
The mass content of the reinforcing agent was modified to 0.3% on the basis of example 1, with the other conditions unchanged.
Application example 1
The cement adhesive prepared in example 3 was poured into an antifouling porcelain insulator in alpine regions, and then steam-cured at 48 ℃ and water-cured at 25 ℃ for 3 hours in sequence.
Comparative example 3
The type of the water reducer is modified into naphthalene water reducer based on the embodiment 3, the model is SBTJM-B naphthalene high-efficiency water reducer, and other conditions are unchanged.
Comparative application example 1
The cement adhesive prepared in the comparative example 3 was poured into an antifouling porcelain insulator in a alpine region, and then steam curing at 48 ℃ and water curing at 25 ℃ were sequentially performed for 3 hours.
The test method of example 1 was used to test the performance of application 1 and comparative application 1, and the results are shown in tables 4 to 5, fig. 5 and fig. 6, wherein fig. 5 shows the compressive strength of application 1 and comparative application 1, and fig. 6 shows the flexural strength of application 1 and comparative application 1.
Table 4 performance data of application example 1 and comparative application example 1
TABLE 5 Performance data for application example 1 and comparative application example 1
As can be seen from tables 4-5, fig. 5 and fig. 6, the mechanical properties of the cement adhesive can be greatly improved by adopting the high-efficiency polycarboxylate superplasticizer, the compression strength is improved by 44.4MPa at the highest, and the flexural strength is improved by 11.5MPa at the highest.
Comparative example 4
The air entraining agent was omitted on the basis of example 1 and the water cement ratio was modified to 0.2, the other conditions being unchanged.
Example 4
The water cement ratio was modified to 0.2 based on example 1, with the other conditions unchanged.
Comparative example 5
The air entraining agent was omitted on the basis of example 1 and the water cement ratio was modified to 0.15, the other conditions being unchanged.
Example 5
The water cement ratio was modified to 0.15 based on example 1, with the other conditions unchanged.
The cement cements prepared in examples 1 to 5 and comparative examples 4 to 5 were subjected to performance test after being cured in water at 25 ℃ for 6 hours, the antifreeze performance of the cement cements was tested according to the national standard "method for antifreeze Property test of Cement mortar" (GB/T41060-2021), the antifreeze performance data after curing the cement cements prepared in examples 1 to 3 are shown in Table 6, and the elastic moduli of the cement cements prepared in examples 4 to 5 and comparative examples 4 to 5 after curing for 28 days are shown in FIG. 7.
TABLE 6 antifreeze data after curing the cement cements prepared in examples 1-3
As can be seen from Table 6, the cement adhesive provided by the invention has excellent freezing resistance.
As can be seen from fig. 7, by adjusting the water-cement ratio and the mixing amount of the air entraining agent, the cold resistance of the cement adhesive can be remarkably improved while the working performance and strength of the cement adhesive are ensured.
Example 6
The cement adhesive comprises aluminate cement, artificial porcelain sand, titanium oxide, silica micropowder, external admixture and water;
The external admixture is an air entraining agent, a water reducing agent, an antifreezing agent, an enhancer and a steep wave performance improving agent;
The mass of the aluminate cement is 60% of the total mass of the aluminate cement, the artificial porcelain sand, the titanium oxide and the silicon micropowder, and the model is CA50-II type aluminate cement;
the mass of the artificial porcelain sand is 35% of the total mass of aluminate cement, the artificial porcelain sand, titanium oxide and silicon micropowder, and the particle size is 30-80 meshes;
the mass of the titanium oxide is 1% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and silicon micropowder, and the particle size is 20-80 nm;
The mass of the silicon micro powder is 4% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and the silicon micro powder, the particle size of the silicon micro powder is 0.1-0.2 mu m, and the content of SiO 2 in the silicon micro powder is 98wt%;
the mass of the air entraining agent is 0.01% of that of aluminate cement, and the air entraining agent is AE330 air entraining agent;
The water reducer is an XCA-100 polycarboxylic acid high-performance water reducer, and the mass of the water reducer is 0.3% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and silica micropowder;
the antifreezing agent is organic alcohol, and the mass is 0.2% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and silicon micropowder;
The reinforcing agent is polypropylene fiber, the diameter is 0.02-0.04 mm, the length is 2.5mm, and the mass is 0.1% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and silicon micropowder;
The steep wave performance improver is sodium chloride, and the mass of the steep wave performance improver is 0.02% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and silicon micropowder;
The cement adhesive has a water-cement ratio of 0.13;
The preparation method of the cement adhesive comprises the following steps:
Mixing aluminate cement, artificial porcelain sand, titanium oxide, silica micropowder, external admixture and water to obtain the cement adhesive.
Example 7
The cement adhesive comprises aluminate cement, artificial porcelain sand, titanium oxide, silica micropowder, external admixture and water;
The external admixture is an air entraining agent, a water reducing agent, an antifreezing agent, an enhancer and a steep wave performance improving agent;
the mass of the aluminate cement is 45% of the total mass of the aluminate cement, the artificial porcelain sand, the titanium oxide and the silicon micropowder, and the model is CA50-II type aluminate cement;
the mass of the artificial porcelain sand is 50% of the total mass of aluminate cement, the artificial porcelain sand, titanium oxide and silicon micropowder, and the particle size is 30-80 meshes;
the mass of the titanium oxide is 3% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and silicon micropowder, and the particle size is 20-80 nm;
the mass of the silicon micro powder is 2% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and the silicon micro powder, the particle size of the silicon micro powder is 0.1-0.2 mu m, and the content of SiO 2 in the silicon micro powder is 98wt%;
The mass of the air entraining agent is 0.005% of that of aluminate cement, and the air entraining agent is AE330 air entraining agent;
The water reducer is an XCA-100 polycarboxylic acid high-performance water reducer, and the mass of the water reducer is 0.1% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and silica micropowder;
the antifreezing agent is organic alcohol, and the mass is 0.3% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and silicon micropowder;
The reinforcing agent is polypropylene fiber, the diameter is 0.02-0.04 mm, the length is 2.5mm, and the mass is 0.3% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and silicon micropowder;
the steep wave performance improver is sodium chloride, and the mass of the steep wave performance improver is 0.05% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and silicon micropowder;
The cement adhesive has a water-cement ratio of 0.13;
The preparation method of the cement adhesive comprises the following steps:
Mixing aluminate cement, artificial porcelain sand, titanium oxide, silica micropowder, external admixture and water to obtain the cement adhesive.
The cement cements prepared in examples 6 to 7 were subjected to a performance test according to the test method of example 1 after being subjected to water curing at 25 ℃ for 5 hours, and the results are shown in tables 7 to 8.
TABLE 7 Performance data of the cements prepared in examples 6-7
Table 8 Performance data of the cements prepared in examples 6-7
As can be seen from tables 7 to 8, the cement cements of the present invention have excellent mechanical strength.
The cement cements prepared in examples 6-7 were subjected to water curing at 25 ℃ for 6 hours, and then tested for their anti-freezing properties according to the national standard "test method for anti-freezing Properties of Cement mortar" (GB/T41060-2021), and the anti-freezing properties after curing of the cement cements prepared in examples 6-7 were tested and the data obtained are shown in Table 9.
TABLE 9 data on the antifreeze performance of the cements prepared in examples 6-7 after curing
As can be seen from table 9, the cement glue provided by the invention has excellent freezing resistance.
From the above examples and comparative examples, it can be seen that the cement cements provided by the present invention can improve cold resistance.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims (10)

1. The cement adhesive is characterized by comprising the following components of aluminate cement, artificial porcelain sand, titanium oxide, silica micropowder, an external doping agent and water;
the cement adhesive has a water-cement ratio of 0.1-0.2;
the external admixture comprises an air entraining agent, a water reducing agent, an antifreezing agent, an enhancer and a steep wave performance improving agent;
the water reducer is a high-efficiency polycarboxylate water reducer;
the mass of the reinforcing agent is 0.1-0.3% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and silicon micropowder.
2. The cement binder of claim 1, wherein the mass of the aluminate cement is 45-60% of the total mass of the aluminate cement, the artificial porcelain sand, the titanium oxide and the silica micropowder.
3. The cement binder of claim 1 wherein the mass of the artificial porcelain sand is 35-50% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and silica micropowder.
4. The cement binder of claim 1 wherein the mass of titanium oxide is 1-3% of the total mass of aluminate cement, artificial porcelain sand, titanium oxide and silica micropowder.
5. The cement binder of claim 1 or 4, wherein the titanium oxide has a particle size of 20-80 nm.
6. The cement binder of claim 1 wherein the air entraining agent is 0.005-0.01% by mass of the aluminate cement.
7. The cement binder of claim 1 or 6 wherein the air entraining agent comprises at least one of rosin resins, alkyl sulfonic acids, alkyl aromatic sulfonic acids, and fatty alcohol sulfonic acid salts.
8. The method for preparing the cement binder according to any one of claims 1 to 7, comprising the steps of:
Mixing aluminate cement, artificial porcelain sand, titanium oxide, silica micropowder, external admixture and water to obtain the cement adhesive.
9. The cement binder according to any one of claims 1 to 7 or the cement binder prepared by the preparation method according to claim 8, and the application of the cement binder in antifouling porcelain insulators in alpine regions.
10. The use according to claim 9, characterized in that it comprises pouring cement glue into the antifouling porcelain insulator in alpine regions, followed by steam curing and water curing in sequence.
CN202411569803.9A 2024-11-06 2024-11-06 A cement adhesive and its preparation method and application Active CN119059783B (en)

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Publication number Priority date Publication date Assignee Title
CN107500651A (en) * 2017-09-01 2017-12-22 国网内蒙古东部电力有限公司电力科学研究院 A kind of extremely cold type cement glue
CN111018485A (en) * 2019-12-12 2020-04-17 江西高强电瓷集团有限公司 High-cold-resistance porcelain insulator and preparation method thereof
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CN107500651A (en) * 2017-09-01 2017-12-22 国网内蒙古东部电力有限公司电力科学研究院 A kind of extremely cold type cement glue
CN111018485A (en) * 2019-12-12 2020-04-17 江西高强电瓷集团有限公司 High-cold-resistance porcelain insulator and preparation method thereof
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