CN112299741A - Concrete surface retarder and application method thereof - Google Patents
Concrete surface retarder and application method thereof Download PDFInfo
- Publication number
- CN112299741A CN112299741A CN201910681858.1A CN201910681858A CN112299741A CN 112299741 A CN112299741 A CN 112299741A CN 201910681858 A CN201910681858 A CN 201910681858A CN 112299741 A CN112299741 A CN 112299741A
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- China
- Prior art keywords
- concrete
- surface retarder
- concrete surface
- parts
- salt
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/04—Producing shaped prefabricated articles from the material by tamping or ramming
- B28B1/045—Producing shaped prefabricated articles from the material by tamping or ramming combined with vibrating or jolting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/14—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/08—Apparatus or processes for treating or working the shaped or preshaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads
- B28B11/0818—Apparatus or processes for treating or working the shaped or preshaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads for roughening, profiling, corrugating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
The invention discloses a concrete surface retarder and an application method thereof, belonging to the technical field of cement concrete retarders. The concrete surface retarder comprises: one or more cement retarding active components, deionized water, rheological additives, humectants, antifreezing agents, preservatives, antirust agents, pigments or dye colorants and fillers.
Description
Technical Field
The invention relates to the technical field of cement concrete retarders, in particular to a surface retarding substance of a water-based concrete material and an application method thereof.
Background
Along with the development of lotus of national economy of China and the continuous improvement of the living standard of people, people have stronger and stronger consciousness on environmental protection, especially along with the rapid development of economy in recent years of China, the building industrialization is produced, the assembly type building is developed rapidly, and the assembly type building components are produced in factories, so that the dust pollution and the noise pollution on construction sites of construction sites are greatly reduced, the labor intensity of workers is reduced, a large number of templates are saved, and therefore, the assembly type building has great significance on environmental protection and energy conservation, and the development prospect is wide.
After the assembly type building components are produced in a factory, the assembly type building components are transported to a site to be hoisted, a plurality of post-cast strips can be reserved among the components, and after the hoisting is finished, the post-cast strips are poured. In order to ensure the bonding strength between the post-cast strip and the concrete member, the contact surface is subjected to surface roughening treatment during the production of the member so as to achieve the effect of mechanical engagement.
The traditional surface roughening treatment is implemented by adopting tools such as a steel brush, an electric hammer, an air pick, a steel chisel and the like, the construction mode has the defects of high labor intensity of workers, low working efficiency, uneven exposure of aggregates, elegant dust everywhere, environmental pollution, high construction cost and the like, time and labor are wasted, the environment is polluted, the efficiency is low, the cost is high, and potential safety hazards are caused because concrete cracks are easily generated due to vibration.
Chinese patent application CN200480030929.3 discloses an oil-based spray type surface retarder using vegetable oil and its derivatives or animal oil and its derivatives plus sugar or salt or acid, which is not environment-friendly when washed.
Chinese patent application CN104446642A discloses a concrete-applied surface time-delay retarder, which has poor sagging property, low construction efficiency (the retarder is coated when horizontally placed before formwork erecting, and formwork erecting can be performed after air drying), and is not environment-friendly, wherein borax in the components has strong toxicity to human body.
Therefore, the invention provides the water-based environment-friendly concrete surface retarder which can be prepared into a spraying type or a smearing type according to users.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides the water-based green environment-friendly concrete surface retarder which can improve the production efficiency and reduce the construction cost, and is particularly safe to human bodies and environment-friendly.
In order to achieve the purpose, the invention adopts the following technical scheme:
the concrete surface retarder comprises the following raw materials in parts by weight: 0.01-60 parts of at least one cement retarding active component, 5-99 parts of deionized water, 0.01-10 parts of rheological additive, 0.01-40 parts of humectant, 0.01-50 parts of antifreeze, 0.01-5 parts of preservative, 0.01-5 parts of antirust agent, 0.01-10 parts of pigment or dye colorant and 0.01-60 parts of filler; and weighing the raw materials in proportion, mixing the raw materials in a container, and uniformly stirring to obtain the concrete surface retarder.
Preferably, the at least one cement set retarding active component is a sugar, molasses and derivatives thereof, alcohol and derivatives thereof, acid or salts thereof and derivatives thereof.
Preferably, the sugar is sucrose, glucose, maltose, lactose, xylose, fructose, sorbose, mannose, and the like, and derivatives thereof.
Preferably, the alcohol and its derivatives are polyols and their derivatives such as sorbitol, ethylene glycol, propylene glycol and glycerol and their derivatives.
Preferably, the acid or its salt and its derivative are hydroxycarboxylic acid or its salt, aminocarboxylic acid or its salt, and the acid or its salt and its derivative is citric acid or its salt, gluconic acid or its salt, salicylic acid or its salt, tartaric acid or its salt, malic acid or its salt.
Preferably, the at least one cement set retarding active ingredient also comprises various types of starch, low molecular weight cellulose and its derivatives, dextrin, casein and its protein-containing substances.
Preferably, the rheological additive is a substance which has thickening, dispersing, emulsifying and stabilizing effects on silicon dioxide, cellulose, triethanolamine, xanthan gum and polyoxyethylene ether.
Preferably, the humectant is sorbitol, ethylene glycol, triethanolamine or glycerol moisture absorption and dryness prevention substance.
Preferably, the antifreezing agent is glycol, and the glycerol aqueous solution does not crystallize at low temperature.
Preferably, the preservative is a broad spectrum bactericide.
Preferably, the antirust agent is a benzotriazole flash rust inhibitor.
Preferably, the pigment or dye colorant is titanium dioxide, iron oxide, chromium oxide, cobalt oxide, zinc oxide, carbon black, or other pigment or colorant.
Preferably, the filler is calcium carbonate, silica, mica, talc, kaolin, barium sulfate.
An application method of a concrete surface retarder comprises the following steps,
s1, brushing a layer of surface retarder on the concrete template needing to be made into a rough surface by a brush;
s2, pouring concrete, vibrating to be dense, and immersing the surface retarder into the concrete of the contact surface;
s3, removing the formwork after the strength of the concrete reaches the strength required by the formwork removal;
and S4, washing the surface of the concrete by using a high-pressure water gun to expose the aggregate and reach the etching depth required by the design.
The concrete surface retarder has the advantages that:
the water-based environment-friendly product has no volatile harmful gas, is safe to human bodies and is environment-friendly.
The operation is simple, the labor intensity of workers is greatly reduced, and the construction cost is saved.
The wet film coating has good sagging property, and can be coated once without secondary coating.
Deep etching depth: the surface retarder has very good sagging property, so the coating thickness can be selected according to the actual engineering requirement, and the thicker the coating is, the deeper the etching depth is, and the highest etching depth can reach 20 mm.
The operability is good: the concrete can be poured immediately after being coated, and can also be poured after being placed for hours or even days after being coated, without influencing the retarding effect of the concrete surface retarder.
The steel form and the steel bar are not corroded, and the strength of the body on the concrete and the bond stress of the steel bar are not reduced.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
Example 1
This example illustrates the configuration of 100g of concrete surface retarder:
the invention provides a concrete surface retarder which is prepared from the following raw materials in parts by weight:
10g of sucrose, 5g of ethylene glycol, 8g of sorbitol, 2g of triethanolamine, 10g of glycerol, 0.5g of cellulose, 5g of titanium dioxide, 33g of silicon dioxide, 1g of ferric oxide, 0.2g of butylparaben, 0.3g of benzotriazole and 25g of deionized water. And weighing the raw materials in proportion, mixing the raw materials in a container, and uniformly stirring to obtain the coagulation upper surface retarder.
The invention provides a using method of a concrete surface retarder, which comprises the following steps,
s1, before concrete is poured (before or after formwork support), a layer of surface retarder is coated on the surface of the concrete formwork needing to be roughened by a brush or a roller, the coating thickness is determined according to the required depth of exposed aggregate, and the thicker the coating is, the deeper the etching is, the deeper the exposed aggregate is;
s2, pouring concrete, vibrating to be compact, immersing the surface retarder into the concrete on the contact surface, and naturally curing or steaming;
s3, removing the formwork after the strength of the concrete reaches the strength required by the formwork removal;
and S4, after the maintenance is finished, washing the surface of the concrete by using a high-pressure water gun to remove a smooth cement surface, exposing the rough surface of the aggregate and reaching the etching depth required by the design.
Example 2
This example illustrates the configuration of 100g of concrete surface retarder:
the invention provides a concrete surface retarder which is prepared from the following raw materials in parts by weight: 3g of sodium gluconate, 8g of sorbitol, 2g of triethanolamine, 15g of glycerol, 0.5g of cellulose, 2g of titanium dioxide, 35g of silicon dioxide, 1g of ferric oxide, 0.2g of butylparaben, 0.3g of benzotriazole and 33g of deionized water. And weighing the raw materials in proportion, mixing the raw materials in a container, and uniformly stirring to obtain the coagulation upper surface retarder.
The invention provides a using method of a concrete surface retarder, which comprises the following steps,
s1, before concrete is poured (before or after formwork support), a layer of surface retarder is coated on the surface of the concrete formwork needing to be roughened by a brush or a roller, the coating thickness is determined according to the required depth of exposed aggregate, and the thicker the coating is, the deeper the etching is, the deeper the exposed aggregate is;
s2, pouring concrete, vibrating to be compact, immersing the surface retarder into the concrete on the contact surface, and naturally curing or steaming;
s3, removing the formwork after the strength of the concrete reaches the strength required by the formwork removal;
and S4, after the maintenance is finished, washing the surface of the concrete by using a high-pressure water gun to remove a smooth cement surface, exposing the rough surface of the aggregate and reaching the etching depth required by the design.
The concrete surface retarder has the advantages that:
the water-based environment-friendly product has no volatile harmful gas, is safe to human bodies and is environment-friendly.
The operation is simple, the labor intensity of workers is greatly reduced, and the construction cost is saved.
The wet film coating has good sagging property, and can be coated once without secondary coating.
Deep etching depth: the surface retarder has very good sagging property, so the coating thickness can be selected according to the actual engineering requirement, and the thicker the coating is, the deeper the etching depth is, and the highest etching depth can reach 20 mm.
The operability is good: the concrete can be poured immediately after being coated, and can also be poured after being placed for hours or even days after being coated, without influencing the retarding effect of the concrete surface retarder.
The steel form and the steel bar are not corroded, and the strength of the body on the concrete and the bond stress of the steel bar are not reduced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (14)
1. The concrete surface retarder is characterized by comprising the following raw materials in parts by weight: 0.01-60 parts of at least one cement retarding active component, 5-99 parts of deionized water, 0.01-10 parts of rheological additive, 0.01-40 parts of humectant, 0.01-50 parts of antifreeze, 0.01-5 parts of preservative, 0.01-5 parts of antirust agent, 0.01-10 parts of pigment or dye colorant and 0.01-60 parts of filler; and weighing the raw materials in proportion, mixing the raw materials in a container, and uniformly stirring to obtain the concrete surface retarder.
2. A concrete surface retarder according to claim 1, wherein the at least one cement retarding active ingredient is a sugar, molasses and derivatives thereof, alcohol and derivatives thereof, acid or salts thereof and derivatives thereof.
3. The concrete surface retarder of claim 2, wherein the sugar is sucrose, glucose, maltose, lactose, xylose, fructose, sorbose, mannose, or a derivative thereof.
4. A concrete surface retarder according to claim 2, wherein the alcohol and its derivatives are polyols and their derivatives such as sorbitol, ethylene glycol, propylene glycol and glycerol and their derivatives.
5. The concrete surface retarder of claim 2, wherein the acid or its salt and its derivative is a hydroxycarboxylic acid or its salt, an aminocarboxylic acid or its salt, and the acid or its salt and its derivative is citric acid or its salt, gluconic acid or its salt, salicylic acid or its salt, tartaric acid or its salt, malic acid or its salt.
6. The concrete surface retarder of claim 1, wherein the at least one cement retarding active ingredient further comprises various types of starch, low molecular weight cellulose and derivatives thereof, dextrin, casein and protein-containing materials thereof.
7. The concrete surface retarder of claim 1, wherein the rheological aid is a thickening, dispersing, emulsifying and stabilizing substance selected from the group consisting of silica, cellulose, triethanolamine, xanthan gum and polyoxyethylene ether.
8. The concrete surface retarder of claim 1, wherein the humectant is sorbitol, ethylene glycol, triethanolamine, glycerol moisture absorption and dryness prevention substance.
9. The concrete surface retarder of claim 1, wherein the antifreeze is ethylene glycol, and the aqueous solution of glycerol does not crystallize at low temperatures.
10. The concrete surface retarder of claim 1, wherein the preservative is a broad spectrum bactericide.
11. The concrete surface retarder of claim 1, wherein the rust inhibitor is a benzotriazole flash rust inhibitor.
12. The concrete surface retarder of claim 1, wherein the pigment or dye colorant is titanium dioxide, iron oxide, chromium oxide, cobalt oxide, zinc oxide, carbon black, or other pigment or colorant.
13. The concrete surface retarder of claim 1, wherein the filler is calcium carbonate, silica, mica, talc, kaolin, barium sulfate.
14. A method of applying the concrete surface retarder of claim 1, comprising the steps of,
s1, brushing a layer of surface retarder on the concrete template needing to be made into a rough surface by a brush;
s2, pouring concrete, vibrating to be dense, and immersing the surface retarder into the concrete of the contact surface;
s3, removing the formwork after the strength of the concrete reaches the strength required by the formwork removal;
and S4, washing the surface of the concrete by using a high-pressure water gun to expose the aggregate and reach the etching depth required by the design.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910681858.1A CN112299741A (en) | 2019-07-26 | 2019-07-26 | Concrete surface retarder and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910681858.1A CN112299741A (en) | 2019-07-26 | 2019-07-26 | Concrete surface retarder and application method thereof |
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| CN112299741A true CN112299741A (en) | 2021-02-02 |
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| CN201910681858.1A Pending CN112299741A (en) | 2019-07-26 | 2019-07-26 | Concrete surface retarder and application method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113213872A (en) * | 2021-05-24 | 2021-08-06 | 杭州三中新型建材科技有限公司 | Super-retarding concrete and preparation method thereof |
| CN113831153A (en) * | 2021-09-14 | 2021-12-24 | 中建材中岩科技有限公司 | Concrete surface retarder and preparation method thereof |
| CN114853380A (en) * | 2022-06-21 | 2022-08-05 | 中建材中岩科技有限公司 | Concrete surface retarder and preparation method thereof |
| CN115215579A (en) * | 2021-04-21 | 2022-10-21 | 泰安市联强远大住宅工业有限公司 | Exposed aggregate agent for fabricated building and gypsum product and preparation method thereof |
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| CN103420687A (en) * | 2013-08-07 | 2013-12-04 | 中建商品混凝土成都有限公司 | Surface cleaning agent dedicated to exposed pervious concrete and preparation and application methods thereof |
| CN104446642A (en) * | 2014-12-03 | 2015-03-25 | 中国二十二冶集团有限公司 | Smeared concrete surface retarder and application method thereof |
| CN109336452A (en) * | 2018-11-20 | 2019-02-15 | 福建建工建材科技开发有限公司 | A kind of surface retarders for concrete prefabricated element |
-
2019
- 2019-07-26 CN CN201910681858.1A patent/CN112299741A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103420687A (en) * | 2013-08-07 | 2013-12-04 | 中建商品混凝土成都有限公司 | Surface cleaning agent dedicated to exposed pervious concrete and preparation and application methods thereof |
| CN104446642A (en) * | 2014-12-03 | 2015-03-25 | 中国二十二冶集团有限公司 | Smeared concrete surface retarder and application method thereof |
| CN109336452A (en) * | 2018-11-20 | 2019-02-15 | 福建建工建材科技开发有限公司 | A kind of surface retarders for concrete prefabricated element |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115215579A (en) * | 2021-04-21 | 2022-10-21 | 泰安市联强远大住宅工业有限公司 | Exposed aggregate agent for fabricated building and gypsum product and preparation method thereof |
| CN113213872A (en) * | 2021-05-24 | 2021-08-06 | 杭州三中新型建材科技有限公司 | Super-retarding concrete and preparation method thereof |
| CN113831153A (en) * | 2021-09-14 | 2021-12-24 | 中建材中岩科技有限公司 | Concrete surface retarder and preparation method thereof |
| CN114853380A (en) * | 2022-06-21 | 2022-08-05 | 中建材中岩科技有限公司 | Concrete surface retarder and preparation method thereof |
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Application publication date: 20210202 |
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