CN111138209A - Concrete external curing agent - Google Patents
Concrete external curing agent Download PDFInfo
- Publication number
- CN111138209A CN111138209A CN202010042040.8A CN202010042040A CN111138209A CN 111138209 A CN111138209 A CN 111138209A CN 202010042040 A CN202010042040 A CN 202010042040A CN 111138209 A CN111138209 A CN 111138209A
- Authority
- CN
- China
- Prior art keywords
- concrete
- curing agent
- agent
- emulsion
- external curing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5076—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with masses bonded by inorganic cements
- C04B41/5089—Silica sols, alkyl, ammonium or alkali metal silicate 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/61—Coating or impregnation
- C04B41/65—Coating or impregnation with inorganic materials
Abstract
The invention discloses a concrete external curing agent, which comprises modified polyolefin wax emulsion, organic emulsion, silane coupling agent, reinforcing agent and inorganic densification component. The concrete external curing agent prepared by the invention adopts the modified polyolefin wax emulsion as the main raw material and contains partial reinforcing agent, and the water is preserved through the film forming effect of the wax emulsion and the organic emulsion, and meanwhile, the reinforcing agent is added as a catalyst, so that the hydration of tricalcium aluminate content and the formation of ettringite in concrete are accelerated, and a certain reinforcing effect is achieved. The concrete external curing agent greatly saves the curing cost of concrete, greatly improves the water retention rate and the compressive strength, and does not cause secondary pollution to the surface of the concrete.
Description
Technical Field
The invention relates to a curing agent, in particular to an external curing agent for concrete.
Background
The cement concrete is the most widely used building material in the world at present, and has the advantages of strong bearing capacity, good durability and the like. Curing is a means of keeping the concrete in a water-saturated state so that the cementitious product can continuously fill the space with water in the fresh concrete. The curing is not timely, the water in capillary pores in the concrete rises to the surface due to the fact that the water on the surface of the concrete evaporates too fast, the powder falls off from the surface of the concrete, the overall strength is remarkably reduced, and finally the durability of the concrete is poor. The traditional concrete curing method comprises the following steps: water curing, steam curing and plastic film curing. The main problems of the traditional maintenance mode are as follows: large water consumption, time and labor waste, incomplete maintenance and high maintenance cost. The curing agents developed and produced in China at present can be divided into the following 4 types: water glass, emulsion, solvent type resin solution, organic-inorganic composite. The water glass has the defects of poor water retention property, and the emulsion curing agent has the advantages of safety, no toxicity and high water retention rate, but can greatly reduce the abrasion resistance and strength of the concrete surface. The organic solvents have the advantages of high water retention rate and high price, and can cause adverse effects and damage to the strength of concrete due to harmful substances entering the surface layer of the concrete.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides the concrete external curing agent which has a good water retention enhancing effect and reduces the internal water loss in the concrete hardening process, so that the strength of concrete is ensured, the surface cracking of concrete is avoided, and the secondary pollution to the surface of concrete is avoided.
The technical scheme adopted by the invention for solving the problems is as follows: the concrete external curing agent comprises the following raw material components in percentage by mass based on the total weight of the raw materials:
and mixing and uniformly stirring the modified polyolefin wax emulsion, the organic emulsion, the silane coupling agent, the reinforcing agent and the inorganic thickening component to obtain the concrete external curing agent.
In the concrete external curing agent, the organic emulsion is any one of pure acrylic emulsion, styrene-acrylic emulsion and acrylic emulsion.
The above concrete external curing agent, the silane coupling agent is any one of a vinyltriethoxysilane coupling agent, a vinyltrimethoxysilane coupling agent, and a vinyltris (β -methoxyethoxy) silane coupling agent.
The reinforcing agent is any one of triethanolamine and triisopropanolamine, and the inorganic densification component is sodium silicate.
Compared with the prior art, the invention has the following advantages:
the concrete external curing agent prepared by the invention adopts the modified polyolefin wax emulsion as the main raw material and contains partial reinforcing agent, and the product can retain water through the film forming effect of the wax emulsion and the organic emulsion, and simultaneously, the reinforcing agent is added as a catalyst, so that the hydration of tricalcium aluminate content in concrete and the formation of ettringite are accelerated to play a certain reinforcing role, and the concrete external curing agent can not cause secondary pollution to the surface of concrete. The concrete external curing agent has the dosage of 0.7-1.0Kg/m2, greatly saves the curing cost of concrete, has the water retention rate of 80-90 percent, and can improve the strength of 7d and 28d by 10-15 percent.
Detailed Description
Example 1
A preparation method of the concrete external curing agent comprises the following steps:
step 1: weighing the raw materials according to the weight percentage;
60 percent of modified polyolefin wax emulsion, 30 percent of pure acrylic emulsion, 0.02 percent of vinyl triethoxysilane coupling agent, 0.02 percent of triethanolamine, 3 percent of sodium silicate and 6.96 percent of tap water
Step 2: and (3) uniformly mixing the weighed raw materials in a forced mixer to obtain the concrete external curing agent.
Spraying the paint on the surfaces of a concrete member and a concrete compressive strength test piece according to the dosage of 1.0Kg/m2, placing the concrete member in an environment with the temperature of 40 ℃ and the wind speed of 5m/s, and observing the cracking condition after 3 days; and placing the concrete compressive strength test piece in an environment with the temperature of 20 +/-5 ℃ and the humidity of 50% to wait for testing the compressive strength for 7d and 28 d. (the test results are shown in Table 1)
Example 2
A preparation method of the concrete external curing agent comprises the following steps:
step 1: weighing the raw materials according to the weight percentage; 60 percent of modified polyolefin wax emulsion, 30 percent of styrene-acrylic emulsion, 0.02 percent of vinyl trimethoxy silane coupling agent, 0.02 percent of triisopropanolamine, 3 percent of sodium silicate and 6.96 percent of tap water
Step 2: and (3) uniformly mixing the weighed raw materials in a forced mixer to obtain the concrete external curing agent.
Spraying the paint on the surfaces of a concrete member and a concrete compressive strength test piece according to the dosage of 1.0Kg/m2, placing the concrete member in an environment with the temperature of 40 ℃ and the wind speed of 5m/s, and observing the cracking condition after 3 days; and placing the concrete compressive strength test piece in an environment with the temperature of 20 +/-5 ℃ and the humidity of 50% to wait for testing the compressive strength for 7d and 28 d. (the test results are shown in Table 1)
Example 3
A preparation method of the concrete external curing agent comprises the following steps:
step 1: weighing the raw materials according to the weight percentage; 60 percent of modified polyolefin wax emulsion, 30 percent of styrene-acrylic emulsion, 0.02 percent of vinyl trimethoxy silane coupling agent, 0.03 percent of triethanolamine, 5 percent of sodium silicate and 4.95 percent of tap water
Step 2: and (3) uniformly mixing the weighed raw materials in a forced mixer to obtain the concrete external curing agent.
Spraying the paint on the surfaces of a concrete member and a concrete compressive strength test piece according to the dosage of 1.0Kg/m2, placing the concrete member in an environment with the temperature of 40 ℃ and the wind speed of 5m/s, and observing the cracking condition after 3 days; and placing the concrete compressive strength test piece in an environment with the temperature of 20 +/-5 ℃ and the humidity of 50% to wait for testing the compressive strength for 7d and 28 d. (the test results are shown in Table 1)
Comparative example: the normal paraffin emulsion concrete external curing agent is produced by a certain building material science and technology limited company in Xuzhou city.
TABLE 1 concrete Property testing Table
The water retention rate of the concrete curing agent in the above embodiment is tested according to building material industry standard JC 901-2002.
The compressive strength test of the concrete curing agent in the embodiment is tested according to the building material industry standard JC 901-2002.
The results of the above examples show that the concrete external curing agent of the present invention can improve the compressive strength of concrete. In addition, the curing agent has better anti-cracking effect, and the test data can fully show that the curing agent has greatly improved anti-cracking, water retention and pressure resistance compared with the prior similar products, and has better application potential.
The protection scope of the present invention is not limited to the above-mentioned embodiments, and other technical solutions substantially the same as the present invention are all included in the scope of the present invention
Within the scope of the invention.
Claims (5)
1. The concrete external curing agent is characterized in that: the raw material components and the mass percentage of each component in the total amount of the raw materials are as follows:
and mixing and uniformly stirring the modified polyolefin wax emulsion, the organic emulsion, the silane coupling agent, the reinforcing agent and the inorganic thickening component to obtain the concrete external curing agent.
2. The external concrete curing agent of claim 1, wherein the organic emulsion is any one of a acrylic emulsion, a styrene-acrylic emulsion, and an acrylic emulsion.
3. The external curing agent for concrete according to claim 1, wherein the silane coupling agent is any one of a vinyltriethoxysilane coupling agent, a vinyltrimethoxysilane coupling agent and a vinyltris (β -methoxyethoxy) silane coupling agent.
4. The external concrete curing agent of claim 1, wherein the reinforcing agent is any one of triethanolamine and triisopropanolamine.
5. The external concrete curing agent of claim 1, wherein the inorganic thickening component is sodium silicate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010042040.8A CN111138209A (en) | 2020-01-15 | 2020-01-15 | Concrete external curing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010042040.8A CN111138209A (en) | 2020-01-15 | 2020-01-15 | Concrete external curing agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111138209A true CN111138209A (en) | 2020-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010042040.8A Pending CN111138209A (en) | 2020-01-15 | 2020-01-15 | Concrete external curing agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111138209A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112778022A (en) * | 2020-12-16 | 2021-05-11 | 武汉度美迪新能源科技有限公司 | Concrete curing agent and preparation method thereof |
| CN112960989A (en) * | 2021-02-23 | 2021-06-15 | 杭州华杰商品混凝土有限公司 | Concrete curing agent and preparation method thereof |
| CN114736565A (en) * | 2022-03-29 | 2022-07-12 | 上海保立佳新材料有限公司 | Hardening agent, raw material composition thereof, preparation method and application |
| CN114790090A (en) * | 2021-01-25 | 2022-07-26 | 重庆大学 | Curing agent for 3D printing concrete and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19735431C1 (en) * | 1997-08-15 | 1999-02-11 | Strabag Strasen Und Tiefbau Ag | Butyl acrylate] or methacrylate] copolymer dispersion-containing composition |
| CN1453244A (en) * | 2002-04-26 | 2003-11-05 | 上海三瑞化学有限公司 | Water-base liquid film-type concrete curing agent |
| CN106747645A (en) * | 2016-11-29 | 2017-05-31 | 广西大学 | A kind of enhanced sealing compound of concrete |
| CN110194678A (en) * | 2019-05-24 | 2019-09-03 | 万民晶 | A kind of curing compound and the maintenance process using the curing agent |
-
2020
- 2020-01-15 CN CN202010042040.8A patent/CN111138209A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19735431C1 (en) * | 1997-08-15 | 1999-02-11 | Strabag Strasen Und Tiefbau Ag | Butyl acrylate] or methacrylate] copolymer dispersion-containing composition |
| CN1453244A (en) * | 2002-04-26 | 2003-11-05 | 上海三瑞化学有限公司 | Water-base liquid film-type concrete curing agent |
| CN106747645A (en) * | 2016-11-29 | 2017-05-31 | 广西大学 | A kind of enhanced sealing compound of concrete |
| CN110194678A (en) * | 2019-05-24 | 2019-09-03 | 万民晶 | A kind of curing compound and the maintenance process using the curing agent |
Non-Patent Citations (2)
| Title |
|---|
| 姚映钦: "《有机化学 第3版》", 31 August 2011, 武汉理工大学出版社 * |
| 葛涛: "《功能性塑料母料生产技术》", 30 June 2006, 中国轻工业出版社 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112778022A (en) * | 2020-12-16 | 2021-05-11 | 武汉度美迪新能源科技有限公司 | Concrete curing agent and preparation method thereof |
| CN114790090A (en) * | 2021-01-25 | 2022-07-26 | 重庆大学 | Curing agent for 3D printing concrete and preparation method thereof |
| CN112960989A (en) * | 2021-02-23 | 2021-06-15 | 杭州华杰商品混凝土有限公司 | Concrete curing agent and preparation method thereof |
| CN112960989B (en) * | 2021-02-23 | 2022-06-24 | 杭州华杰商品混凝土有限公司 | Concrete curing agent and preparation method thereof |
| CN114736565A (en) * | 2022-03-29 | 2022-07-12 | 上海保立佳新材料有限公司 | Hardening agent, raw material composition thereof, preparation method and application |
| CN114736565B (en) * | 2022-03-29 | 2023-11-28 | 上海保立佳新材料有限公司 | Hardening agent and raw material composition, preparation method and application thereof |
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Application publication date: 20200512 |
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