CN110845197A - Concrete cracking repairing agent - Google Patents
Concrete cracking repairing agent Download PDFInfo
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- CN110845197A CN110845197A CN201911222757.4A CN201911222757A CN110845197A CN 110845197 A CN110845197 A CN 110845197A CN 201911222757 A CN201911222757 A CN 201911222757A CN 110845197 A CN110845197 A CN 110845197A
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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
- C04B28/04—Portland 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
- 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
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/23—Acid resistance, e.g. against acid air or rain
-
- 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
- C04B2111/60—Flooring materials
- C04B2111/62—Self-levelling compositions
-
- 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
- C04B2111/72—Repairing or restoring existing buildings or building 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
-
- 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
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a concrete cracking repairing agent, which relates to the technical field of concrete materials and is prepared from the following raw materials in parts by weight: 30-40 parts of cement, 50-65 parts of river sand, 10-15 parts of fly ash, 15-20 parts of carboxylic styrene-butadiene latex, 5-10 parts of asphalt carbon fiber powder, 10-15 parts of sodium bentonite, 2-4 parts of sodium alginate, 0.3-0.5 part of defoaming agent, 3-5 parts of talcum powder, 4-7 parts of shell powder, 0.4-0.6 part of calcium lignosulfonate and 1-1.5 parts of UEA expanding agent. The concrete repairing agent has the advantages of good self-leveling property, high strength, acid and alkali resistance, corrosion resistance, low cost, long service life and the like.
Description
Technical Field
The invention relates to the technical field of concrete materials, in particular to a concrete cracking repairing agent.
Background
Concrete, referred to as "concrete" for short, is usually prepared by mixing cement as a cementing material, sand and stone as aggregates, and water in a certain proportion, and stirring. The concrete has the characteristics of rich raw materials, low price and simple production process, has wide application range, is used in various civil engineering, namely shipbuilding industry, mechanical industry, ocean development, geothermal engineering and the like, and is also an important material.
Along with the time, the concrete can receive abominable natural environment in the use, and artificial destruction, excessive bearing and the influence of factors such as self chemical reaction lead to the sand production, the fracture phenomenon, if let its development, the crackle can grow gradually, influences the service function of concrete, can appear the serious consequence that the levee in thousand miles destroys in the ant cave even. The existing concrete repairing agent has low fluidity, cannot permeate into the fine part of a crack, cannot be tightly combined with concrete, is fused into a whole, and can generate a sand-forming cracking phenomenon again after a short time, and the re-cracked crack is larger than the original crack, the maintenance difficulty is increased, and the cost is higher. Today, the concrete is widely used, the scale of concrete facilities in China is large, the repair engineering is difficult, and the cost is high, so that a concrete repairing agent with low cost, high strength and excellent permeability is urgently needed.
Disclosure of Invention
In view of the above, the invention provides a concrete repairing agent with good self-leveling property, high strength, acid and alkali resistance, corrosion resistance and low cost.
In order to achieve the above object, the present invention provides the following technical solutions:
a concrete cracking healant is prepared from the following raw materials in parts by weight: 30-40 parts of cement, 50-65 parts of river sand, 10-15 parts of fly ash, 15-20 parts of carboxylic styrene-butadiene latex, 5-10 parts of asphalt carbon fiber powder, 10-15 parts of sodium bentonite, 2-4 parts of sodium alginate, 0.3-0.5 part of defoaming agent, 3-5 parts of talcum powder, 4-7 parts of shell powder, 0.4-0.6 part of calcium lignosulfonate and 1-1.5 parts of UEA expanding agent; the mesh number of the asphalt carbon fiber powder is 50-200 meshes, and the shell powder is formed by grinding after being sintered at the high temperature of 800-1100 ℃ for 30-40min and has the mesh number of 50-300 meshes.
The invention also has the following additional technical features:
preferably, the feed additive is prepared from the following raw materials in parts by weight: 30-37 parts of cement, 58-65 parts of river sand, 12-14 parts of fly ash, 15-18 parts of carboxylic styrene-butadiene latex, 6-9 parts of asphalt carbon fiber powder, 10-13 parts of sodium bentonite, 2-3 parts of sodium alginate, 0.3-0.5 part of defoaming agent, 3-5 parts of talcum powder, 5-6 parts of shell powder, 0.4-0.6 part of calcium lignosulfonate and 1.2-1.5 parts of UEA expanding agent.
Preferably, the feed additive is prepared from the following raw materials in parts by weight: 35 parts of cement, 60 parts of river sand, 13 parts of fly ash, 17 parts of carboxylic styrene-butadiene latex, 8 parts of asphalt carbon fiber powder, 12 parts of sodium bentonite, 2 parts of sodium alginate, 0.3 part of defoaming agent, 4 parts of talcum powder, 6 parts of shell powder, 0.4 part of calcium lignosulfonate and 1 part of UEA expanding agent.
Preferably, the feed additive is prepared from the following raw materials in parts by weight: 30 parts of cement, 58 parts of river sand, 14 parts of fly ash, 15 parts of carboxylic styrene-butadiene latex, 9 parts of asphalt carbon fiber powder, 10 parts of sodium bentonite, 3 parts of sodium alginate, 0.3 part of defoaming agent, 5 parts of talcum powder, 5 parts of shell powder, 0.4 part of calcium lignosulfonate and 1.2 parts of UEA expanding agent.
Preferably, the feed additive is prepared from the following raw materials in parts by weight: 40 parts of cement, 65 parts of river sand, 10 parts of fly ash, 20 parts of carboxylic styrene-butadiene latex, 5 parts of asphalt carbon fiber powder, 15 parts of sodium bentonite, 4 parts of sodium alginate, 0.5 part of defoaming agent, 3 parts of talcum powder, 7 parts of shell powder, 0.6 part of calcium lignosulfonate and 1.5 parts of UEA expanding agent.
Preferably, the pitch carbon fiber is a petroleum-based pitch carbon fiber.
Preferably, the pitch carbon fiber is a general-purpose pitch-based carbon fiber.
Further, the pitch carbon fiber powder is obtained by placing pitch carbon fibers into a pulverizer and grinding.
Preferably, the defoaming agent is a dry powder type organic silicon defoaming agent.
Further, the cement is portland cement.
Further, the strength of the cement is 42.5R, 52.5R and 52.5R.
Furthermore, the fineness of the river sand is 50-150 meshes.
The preparation method of the concrete repairing agent comprises the following steps: weighing the components according to the formula ratio, adding the components into a stirrer, and uniformly mixing to obtain the product.
The using method comprises the following steps: mixing a concrete repairing agent and water according to the ratio of 1: 0.4, uniformly mixing, shoveling the mixture at the part to be repaired, compacting and trowelling.
Compared with the prior art, the invention has the advantages that:
the concrete repairing agent has a reasonable formula, and the talcum powder, the carboxylic styrene-butadiene latex and the components supplement each other to improve the dispersibility of the slurry and the self-leveling property of the slurry, so that the slurry can penetrate into crack gaps of concrete and is tightly fused with the concrete;
the concrete repairing agent disclosed by the invention is excellent in cementing property, more compact in combination of particles, good in bending resistance, toughness, high in strength, resistant to acid and alkali corrosion, and capable of ensuring good compatibility of the repairing agent and old concrete so as to prolong the service life of the repairing agent, so that the later-stage repairing cost is greatly reduced, and the concrete repairing agent is more suitable for being used in road and bridge construction, is easy to purchase materials, is convenient to prepare, and is beneficial to production and popularization.
Detailed Description
Some embodiments of the invention are disclosed below, and those skilled in the art can appropriately modify the process parameters to achieve the invention according to the disclosure herein. It is expressly intended that all such similar substitutes and modifications which would be obvious to one skilled in the art are deemed to be included in the invention. While the methods and applications of this invention have been described in terms of preferred embodiments, it will be apparent to those of ordinary skill in the art that variations and modifications in the methods and applications described herein, as well as other suitable variations and combinations, may be made to implement and use the techniques of this invention without departing from the spirit and scope of the invention.
Example 1
The concrete repairing agent 1 comprises the following components: 35 parts of ordinary portland cement with the strength of 42.5, 60 parts of river sand (50-150 meshes), 13 parts of fly ash, 17 parts of carboxylic styrene-butadiene latex, 8 parts of asphalt carbon fiber (universal petroleum-based asphalt-based carbon fiber), 12 parts of sodium bentonite, 2 parts of sodium alginate, 0.3 part of an organic silicon defoamer (chemical sublimation), 4 parts of talcum powder, 6 parts of shell powder, 0.4 part of calcium lignosulfonate and 1 part of UEA expanding agent.
Example 2
The concrete repairing agent 2 comprises the following components: 30 parts of ordinary portland cement with the strength of 42.5, 58 parts of river sand (50-150 meshes), 14 parts of fly ash, 15 parts of carboxylic styrene-butadiene latex, 9 parts of asphalt carbon fiber (universal petroleum-based asphalt-based carbon fiber), 10 parts of sodium bentonite, 3 parts of sodium alginate, 0.3 part of an organic silicon defoamer (chemical sublimation), 5 parts of talcum powder, 5 parts of shell powder, 0.4 part of calcium lignosulfonate and 1.2 parts of UEA expanding agent.
Example 3
The concrete repairing agent 3 comprises the following components: 40 parts of ordinary portland cement with the strength of 42.5, 65 parts of river sand (50-150 meshes), 10 parts of fly ash, 20 parts of carboxylic styrene-butadiene latex, 5 parts of asphalt carbon fiber (universal petroleum-based asphalt-based carbon fiber), 15 parts of sodium bentonite, 4 parts of sodium alginate, 0.5 part of an organic silicon defoamer (chemical sublimation), 3 parts of talcum powder, 7 parts of shell powder, 0.6 part of calcium lignosulfonate and 1.5 parts of UEA expanding agent.
Comparative example 1
The concrete crack repairing agent is commercially available from Jinan Yitong building materials Co.
Comparative example 2
A commercially available concrete repair agent manufactured by suzhou oxxx building materials ltd.
Example 3
The concrete of the embodiments 1 to 3 of the invention is subjected to performance test and compared with the comparative examples 1 and 2, the fluidity is determined according to GB/T2419-; the abrasion resistance test refers to JC/T421-2004 cement mortar abrasion resistance test method; the antifreeze test refers to DL/T5151-2001, Hydraulic concrete test procedure, and adopts quick freezing method, the test beginning freeze-thaw age period adopts 28d, and the test piece begins the freeze-thaw test after being soaked in the aqueous solution with the temperature of 20 +/-3 ℃ for 4d before reaching the test age period. The test results are shown in Table 1.
TABLE 1 Performance test
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (7)
1. The concrete cracking healant is characterized by being prepared from the following raw materials in parts by weight: 30-40 parts of cement, 50-65 parts of river sand, 10-15 parts of fly ash, 15-20 parts of carboxylic styrene-butadiene latex, 5-10 parts of asphalt carbon fiber powder, 10-15 parts of sodium bentonite, 2-4 parts of sodium alginate, 0.3-0.5 part of defoaming agent, 3-5 parts of talcum powder, 4-7 parts of shell powder, 0.4-0.6 part of calcium lignosulfonate and 1-1.5 parts of UEA expanding agent; the mesh number of the asphalt carbon fiber powder is 50-200 meshes, and the shell powder is formed by grinding after being sintered at the high temperature of 800-1100 ℃ for 30-40min and has the mesh number of 50-300 meshes.
2. The concrete cracking healant of claim 1, which is prepared from the following raw materials in parts by weight: 30-37 parts of cement, 58-65 parts of river sand, 12-14 parts of fly ash, 15-18 parts of carboxylic styrene-butadiene latex, 6-9 parts of asphalt carbon fiber powder, 10-13 parts of sodium bentonite, 2-3 parts of sodium alginate, 0.3-0.5 part of defoaming agent, 3-5 parts of talcum powder, 5-6 parts of shell powder, 0.4-0.6 part of calcium lignosulfonate and 1.2-1.5 parts of UEA expanding agent.
3. The concrete cracking healant of claim 1, which is prepared from the following raw materials in parts by weight: 35 parts of cement, 60 parts of river sand, 13 parts of fly ash, 17 parts of carboxylic styrene-butadiene latex, 8 parts of asphalt carbon fiber powder, 12 parts of sodium bentonite, 2 parts of sodium alginate, 0.3 part of defoaming agent, 4 parts of talcum powder, 6 parts of shell powder, 0.4 part of calcium lignosulfonate and 1 part of UEA expanding agent.
4. The concrete cracking healant of claim 1, which is prepared from the following raw materials in parts by weight: 30 parts of cement, 58 parts of river sand, 14 parts of fly ash, 15 parts of carboxylic styrene-butadiene latex, 9 parts of asphalt carbon fiber powder, 10 parts of sodium bentonite, 3 parts of sodium alginate, 0.3 part of defoaming agent, 5 parts of talcum powder, 5 parts of shell powder, 0.4 part of calcium lignosulfonate and 1.2 parts of UEA expanding agent.
5. The concrete cracking healant of claim 1, which is prepared from the following raw materials in parts by weight: 40 parts of cement, 65 parts of river sand, 10 parts of fly ash, 20 parts of carboxylic styrene-butadiene latex, 5 parts of asphalt carbon fiber powder, 15 parts of sodium bentonite, 4 parts of sodium alginate, 0.5 part of defoaming agent, 3 parts of talcum powder, 7 parts of shell powder, 0.6 part of calcium lignosulfonate and 1.5 parts of UEA expanding agent.
6. The concrete crack healant of claim 1, wherein the pitch carbon fiber is a petroleum-based pitch carbon fiber.
7. The concrete crack repair agent according to claim 1, wherein the defoaming agent is a dry powder-based silicone defoaming agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911222757.4A CN110845197A (en) | 2019-12-03 | 2019-12-03 | Concrete cracking repairing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911222757.4A CN110845197A (en) | 2019-12-03 | 2019-12-03 | Concrete cracking repairing agent |
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| Publication Number | Publication Date |
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| CN110845197A true CN110845197A (en) | 2020-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911222757.4A Pending CN110845197A (en) | 2019-12-03 | 2019-12-03 | Concrete cracking repairing agent |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830671A (en) * | 2009-03-11 | 2010-09-15 | 上海惠邦特种涂料有限公司 | High-strength composite material for caulking, repair and water prevention of concrete/inorganic plate and preparation method thereof |
| CN107382229A (en) * | 2017-09-07 | 2017-11-24 | 江苏蓝圈新材料股份有限公司 | A kind of new mending mortar |
| CN108358577A (en) * | 2018-02-27 | 2018-08-03 | 周静坤 | Repairing freeway subgrade slurry and method for repairing and mending |
| CN109678437A (en) * | 2019-01-28 | 2019-04-26 | 甘肃省交通规划勘察设计院股份有限公司 | A kind of bi-component low viscosity type basic crack fast repairing material |
-
2019
- 2019-12-03 CN CN201911222757.4A patent/CN110845197A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830671A (en) * | 2009-03-11 | 2010-09-15 | 上海惠邦特种涂料有限公司 | High-strength composite material for caulking, repair and water prevention of concrete/inorganic plate and preparation method thereof |
| CN107382229A (en) * | 2017-09-07 | 2017-11-24 | 江苏蓝圈新材料股份有限公司 | A kind of new mending mortar |
| CN108358577A (en) * | 2018-02-27 | 2018-08-03 | 周静坤 | Repairing freeway subgrade slurry and method for repairing and mending |
| CN109678437A (en) * | 2019-01-28 | 2019-04-26 | 甘肃省交通规划勘察设计院股份有限公司 | A kind of bi-component low viscosity type basic crack fast repairing material |
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Application publication date: 20200228 |