CN112266225A - Preparation method of extremely-fast-setting super-early-strength facade repair material - Google Patents
Preparation method of extremely-fast-setting super-early-strength facade repair material Download PDFInfo
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- CN112266225A CN112266225A CN202011212172.7A CN202011212172A CN112266225A CN 112266225 A CN112266225 A CN 112266225A CN 202011212172 A CN202011212172 A CN 202011212172A CN 112266225 A CN112266225 A CN 112266225A
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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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
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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
- C04B28/14—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 calcium sulfate cements
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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
- 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
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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
- 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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- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention relates to the technical field of building material preparation, in particular to a preparation method of an extremely-fast-setting ultra-early-strength facade repair material; the composite material consists of the following raw materials in parts by weight: 24-30 parts of high alumina cement, 5-8 parts of portland cement, 3-5 parts of fly ash, 2-4 parts of aluminum dihydroxy formate, 3-6 parts of gypsum, 32-36 parts of quartz sand coarse sand, 23-30 parts of quartz sand medium sand, 6.2-7.5 parts of quartz sand fine sand, 4.8-5.6 parts of coagulant aid, 0.15-0.2 part of water reducing agent, 0.1-0.16 part of tackifier, 0.14-0.18 part of early strength agent, 0.18-0.25 part of shrinkage reducer, 0.08-0.12 part of defoaming agent, 0.2-0.4 part of PP fiber and 0.23-0.28 part of anti-sagging agent; the vertical face repairing material prepared by the invention not only has higher solidification rate, but also has excellent compressive strength and breaking strength, and shows that the vertical face repairing material prepared by the invention has wider market prospect and is more suitable for popularization.
Description
Technical Field
The invention relates to the technical field of building material preparation, in particular to a preparation method of an extremely-fast-setting ultra-early-strength vertical face repairing material.
Background
Concrete, or cement concrete, is a composite material formed by binding fine and coarse aggregates with cement and hardening them over time, the most common of which in the past was lime-based cement, like lime paste, but hydraulic cements, such as calcium aluminate cement or portland cement, have also been used. Unlike other concretes, non-cement based concretes bond various aggregates directly.
Because the concrete has a plurality of excellent properties, the concrete is widely applied to the field of civil engineering. At present, a large amount of concrete is required to be used in the fields of roads, bridges and the like for building and repairing runways, bridge roads and epoxy terraces. At present, a plurality of vertical face repairing materials exist in the market, although the vertical face repairing materials can play a certain repairing role in the fields of roads, bridges and the like, the solidification rate of the vertical face repairing materials is relatively slow, and the compression strength and the breaking strength of the vertical face repairing materials are required to be improved. The vertical face repairing material prepared by the invention has wider market prospect and is more suitable for popularization.
Therefore, it is an urgent technical problem to be solved by those skilled in the art to provide a method for preparing a quick-setting super-early-strength vertical repair material.
Disclosure of Invention
Aiming at the technical problems in the background art, the invention provides a preparation method of a rapid-solidification ultra-early-strength vertical face repairing material. The vertical face repairing material prepared by the invention has wider market prospect and is more suitable for popularization.
Technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme:
the quick-setting super-early-strength vertical face repairing material consists of the following raw materials in parts by weight: 24-30 parts of high alumina cement, 5-8 parts of portland cement, 3-5 parts of fly ash, 2-4 parts of aluminum dihydroxy formate, 3-6 parts of gypsum, 32-36 parts of quartz sand coarse sand, 23-30 parts of quartz sand medium sand, 6.2-7.5 parts of quartz sand fine sand, 4.8-5.6 parts of coagulant aid, 0.15-0.2 part of water reducing agent, 0.1-0.16 part of tackifier, 0.14-0.18 part of early strength admixture, 0.18-0.25 part of shrinkage reducer, 0.08-0.12 part of defoaming agent, 0.2-0.4 part of PP fiber and 0.23-0.28 part of anti-sagging agent.
Further, the preparation method of the coagulant aid comprises the following steps:
according to the mass ratio of 7-10: 1, accurately weighing an appropriate amount of aluminum sulfate and polyacrylamide, placing the aluminum sulfate and the polyacrylamide in a reaction kettle, respectively adding 8-10 times of distilled water by mass of aluminum sulfate into the reaction kettle, uniformly mixing and stirring, adding 2.5-3.2% by mass of sodium dodecyl benzene sulfonate and 18-26% by mass of 3-aminopropyltriethoxysilane into the reaction kettle, ultrasonically dispersing for 5-10 min, adjusting the temperature in the reaction kettle to 60-75 ℃, reacting at the constant temperature for 10-15 h, naturally cooling to room temperature after the reaction is finished, filtering and washing the mixed components in the reaction kettle for 2-3 times by alcohol; and finally, placing the obtained solid powder in a constant-temperature drying box for drying treatment, wherein the obtained solid powder is the coagulant aid finished product.
Furthermore, the water reducing agent is any one of a polycarboxylic acid water reducing agent or a lignosulfonate water reducing agent.
Furthermore, the tackifier is any one of cellulose ether tackifier or polyvinyl alcohol tackifier.
Furthermore, the early strength agent is selected from any one of calcium formate and calcium acetate.
Furthermore, the shrinkage reducing agent is any one of sodium lauraminopropionate, sodium lauriminodipropionate or laurylamine polyoxyethylene ether.
Furthermore, the defoaming agent is selected from one of polyether defoaming agent and organic silicon defoaming agent.
Furthermore, the anti-sagging agent is any one of CrayvallacSL, CrayvallacSLX and Degussa fumed silica R972.
A preparation method of an extremely fast-setting ultra-early-strength vertical face repairing material comprises the following steps:
s1, accurately weighing the materials according to the weight ratio, respectively placing the solid raw materials into an ore crusher for crushing, respectively sieving each solid powder obtained after crushing through a sieve with the aperture of 0.2-0.5 mm, and respectively storing each solid fine powder obtained after sieving for later use;
s2, putting the solid fine powder obtained in the step S1 and raw materials except the coagulant aid, the water reducing agent, the tackifier, the early strength agent, the shrinkage reducing agent, the defoaming agent and the anti-sagging agent into a mixer, and mixing and stirring at the speed of 80-120 r/min for 5-8 min; and then adding the rest raw materials into a mixer, uniformly stirring at the speed of 180-300 r/min for 10-15 min, and finally obtaining the finished product of the ultra-fast setting and ultra-early strength vertical face repairing material in the mixing kettle.
Advantageous effects
Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:
1. in the invention, high alumina cement, portland cement, fly ash, coagulant aid, aluminum dihydroxy formate, gypsum and other raw materials are used as raw materials for preparing the quick-setting super-early-strength vertical repairing material; the aluminum sulfate is chemically modified by using acrylamide and 3-aminopropyltriethoxysilane, and under the coordination action of sodium dodecyl benzene sulfonate and ultrasonic dispersion treatment, the aluminum sulfate and other reactants can be uniformly dispersed into a mixed liquid phase, so that the possibility of contact between the aluminum sulfate and a silane coupling agent is effectively increased, and the aluminum sulfate and the 3-aminopropyltriethoxysilane are connected through a chemical bond under the action of the silane coupling agent, so that the chemical modification of the aluminum sulfate is realized. The modified aluminum sulfate, the fly ash, the aluminum dihydroxy formate, the gypsum, the water reducing agent and the early strength agent are mutually cooperated, so that the solidification rate of the vertical face repairing material prepared by the invention can be obviously improved, and the compressive strength and the flexural strength of the vertical face repairing material can be effectively improved.
2. The facade repair material prepared by the invention has extremely high early strength, and can resist pressure of more than 15Mpa after being aged for 1h in winter; the later strength is not reduced, and the 28-day compressive strength can be maintained at about 55 MPa. In addition, the flexural strength is excellent, the volume is very stable even when the flexural strength is about 8MPa after 28 days, and the shrinkage rate is below 0.06 percent after 28 days. In addition, it contains no chloride early strength agent, so it has no need of worrying about corrosion of steel bar. Convenient for field use, and can be added with a certain amount of quartz bone material and water.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention will be further described with reference to the following examples.
Example 1
The quick-setting super-early-strength vertical face repairing material consists of the following raw materials in parts by weight: 24 parts of high-alumina cement, 5 parts of portland cement, 3 parts of fly ash, 2 parts of aluminum dihydroxy formate, 3 parts of gypsum, 32 parts of quartz sand coarse sand, 23 parts of quartz sand medium sand, 6.2 parts of quartz sand fine sand, 4.8 parts of a coagulant aid, 0.15 part of a water reducing agent, 0.1 part of a tackifier, 0.14 part of an early strength agent, 0.18 part of a shrinkage reducing agent, 0.08 part of an antifoaming agent, 0.2 part of PP fiber and 0.23 part of a sagging inhibitor.
The preparation method of the coagulant aid comprises the following steps:
according to the mass ratio of 7: 1 accurately weighing an appropriate amount of aluminum sulfate and polyacrylamide, placing the aluminum sulfate and the polyacrylamide in a reaction kettle, respectively adding 8 times of distilled water by mass of the aluminum sulfate into the reaction kettle, uniformly mixing and stirring, then adding 2.5% by mass of sodium dodecyl benzene sulfonate and 18% by mass of aluminum sulfate 3-aminopropyltriethoxysilane into the reaction kettle, ultrasonically dispersing for 5min, adjusting the temperature in the reaction kettle to 60 ℃, reacting at the constant temperature for 10h, naturally cooling the temperature to room temperature after the reaction is finished, and filtering and washing the mixed components in the reaction kettle for 2 times by alcohol; and finally, placing the obtained solid powder in a constant-temperature drying box for drying treatment, wherein the obtained solid powder is the coagulant aid finished product.
The water reducing agent is polycarboxylic acid water reducing agent.
The tackifier is cellulose ether tackifier.
The early strength agent is calcium formate.
The shrinkage reducing agent is sodium laurylaminopropionate.
The defoaming agent is polyether defoaming agent.
The anti-sagging agent is CrayvallacSL.
A preparation method of an extremely fast-setting ultra-early-strength vertical face repairing material comprises the following steps:
s1, accurately weighing the materials according to the weight ratio, respectively placing the solid raw materials into an ore crusher to be crushed, respectively sieving the crushed solid powder with a sieve with the aperture of 0.2mm, and respectively storing the obtained solid fine powder for later use;
s2, putting the solid fine powder obtained in the step S1 and raw materials except the coagulant aid, the water reducing agent, the tackifier, the early strength agent, the shrinkage reducing agent, the defoaming agent and the anti-sagging agent into a mixer, and mixing and stirring at the speed of 80r/min for 5 min; and then adding the rest raw materials into a mixer, uniformly stirring for 10min at the speed of 180r/min, and finally obtaining the finished product of the ultra-fast-setting ultra-early-strength vertical repair material in the mixing kettle.
Example 2
The quick-setting super-early-strength vertical face repairing material consists of the following raw materials in parts by weight: 28 parts of high-alumina cement, 6 parts of portland cement, 4 parts of fly ash, 3 parts of aluminum dihydroxy formate, 5 parts of gypsum, 34 parts of quartz sand coarse sand, 25 parts of quartz sand medium sand, 6.8 parts of quartz sand fine sand, 5.2 parts of a coagulant aid, 0.18 part of a water reducing agent, 0.13 part of a tackifier, 0.16 part of an early strength agent, 0.2 part of a shrinkage reducing agent, 0.10 part of an antifoaming agent, 0.3 part of PP fiber and 0.25 part of a sagging inhibitor.
The preparation method of the coagulant aid comprises the following steps:
according to the mass ratio of 8: 1 accurately weighing an appropriate amount of aluminum sulfate and polyacrylamide, placing the aluminum sulfate and the polyacrylamide in a reaction kettle, respectively adding 9 times of distilled water by mass of aluminum sulfate into the reaction kettle, uniformly mixing and stirring, adding 3.0% by mass of sodium dodecyl benzene sulfonate and 22% by mass of aluminum sulfate 3-aminopropyltriethoxysilane into the reaction kettle, ultrasonically dispersing for 8min, adjusting the temperature in the reaction kettle to 70 ℃, reacting at the constant temperature for 12h, naturally cooling to room temperature after the reaction is finished, filtering and washing the mixed components in the reaction kettle with alcohol for 2 times; and finally, placing the obtained solid powder in a constant-temperature drying box for drying treatment, wherein the obtained solid powder is the coagulant aid finished product.
The water reducing agent is lignin sulfonate water reducing agent.
The tackifier is polyvinyl alcohol.
The early strength agent is calcium acetate.
The shrinkage reducing agent is sodium laurimidodipropionate.
The defoaming agent is an organic silicon defoaming agent.
The anti-sagging agent is CrayvallacSLX.
A preparation method of an extremely fast-setting ultra-early-strength vertical face repairing material comprises the following steps:
s1, accurately weighing the materials according to the weight ratio, respectively placing the solid raw materials into an ore crusher to be crushed, respectively sieving the crushed solid powder with a sieve with the aperture of 0.3mm, and respectively storing the obtained solid fine powder for later use;
s2, putting the solid fine powder obtained in the step S1 and raw materials except the coagulant aid, the water reducing agent, the tackifier, the early strength agent, the shrinkage reducing agent, the defoaming agent and the anti-sagging agent into a mixer, and mixing and stirring at the speed of 100r/min for 6 min; and then adding the rest raw materials into a mixer, uniformly stirring for 10min at the speed of 240r/min, and finally obtaining the finished product of the ultra-fast-setting ultra-early-strength vertical repair material in the mixing kettle.
Example 3
The quick-setting super-early-strength vertical face repairing material consists of the following raw materials in parts by weight: 30 parts of high-alumina cement, 8 parts of portland cement, 5 parts of fly ash, 4 parts of aluminum dihydroxy formate, 6 parts of gypsum, 36 parts of quartz sand coarse sand, 30 parts of quartz sand medium sand, 7.5 parts of quartz sand fine sand, 5.6 parts of a coagulant aid, 0.2 part of a water reducing agent, 0.16 part of a tackifier, 0.18 part of an early strength agent, 0.25 part of a shrinkage reducing agent, 0.12 part of an antifoaming agent, 0.4 part of PP fiber and 0.28 part of a sagging inhibitor.
The preparation method of the coagulant aid comprises the following steps:
according to the mass ratio of 10: 1 accurately weighing an appropriate amount of aluminum sulfate and polyacrylamide, placing the aluminum sulfate and the polyacrylamide in a reaction kettle, respectively adding distilled water with the mass being 10 times of that of the aluminum sulfate into the reaction kettle, uniformly mixing and stirring, then adding sodium dodecyl benzene sulfonate with the mass being 3.2% of that of the distilled water and 3-aminopropyltriethoxysilane with the mass being 26% of that of the aluminum sulfate into the reaction kettle, ultrasonically dispersing for 10min, adjusting the temperature in the reaction kettle to 75 ℃, carrying out constant-temperature reaction for 15h at the temperature, naturally cooling the temperature to room temperature after the reaction is finished, and filtering and washing the mixed components in the reaction kettle for 3 times; and finally, placing the obtained solid powder in a constant-temperature drying box for drying treatment, wherein the obtained solid powder is the coagulant aid finished product.
The water reducing agent is polycarboxylic acid water reducing agent.
The tackifier is cellulose ether tackifier.
The early strength agent is calcium formate.
The shrinkage reducing agent is laurylamine polyoxyethylene ether.
The defoaming agent is polyether defoaming agent.
The anti-sagging agent is selected from degussa fumed silica R972.
A preparation method of an extremely fast-setting ultra-early-strength vertical face repairing material comprises the following steps:
s1, accurately weighing the materials according to the weight ratio, respectively placing the solid raw materials into an ore crusher to be crushed, respectively sieving the crushed solid powder with a sieve with the aperture of 0.5mm, and respectively storing the obtained solid fine powder for later use;
s2, putting the solid fine powder obtained in the step S1 and raw materials except the coagulant aid, the water reducing agent, the tackifier, the early strength agent, the shrinkage reducing agent, the defoaming agent and the anti-sagging agent into a mixer, and mixing and stirring at the speed of 120r/min for 8 min; and then adding the rest raw materials into a mixer, uniformly stirring for 15min at the speed of 300r/min, and finally obtaining the finished product of the ultra-fast-setting ultra-early-strength vertical repairing material in the mixing kettle.
Performance testing
Comparative example: a facade repair material produced by a company Limited, produced by a concrete manufacturer in Huanan City, Anhui province;
comparative example: the vertical face repairing material prepared by the embodiments 1-3 in the invention;
the experimental process comprises the following steps: respectively weighing equal parts of the vertical face repairing materials prepared in the comparative example and the examples 1 to 3, respectively placing the parts in different mixing barrels, respectively weighing 1.5 to 2.5 times of the vertical face repairing materials, and mutually and uniformly mixing the high-quality quartz sand and the dry powder in the barrels. Then adding water: 1: weighing corresponding water consumption according to the water-material ratio of 0.15-0.17, uniformly stirring to obtain the cement material for repairing the inside, using the four groups of obtained cement materials for repairing the bridge road expansion joint, and measuring the performances of the four groups of prepared cement materials at different time intervals, wherein the obtained data are recorded in the following table:
from the relevant data in the above table, it can be seen that the facade repair material prepared by the present invention has not only a faster setting rate, but also excellent compressive strength and flexural strength, compared to the facade repair material provided by the comparative example. The vertical face repairing material prepared by the invention has wider market prospect and is more suitable for popularization.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (9)
1. The quick-setting super-early-strength facade repair material is characterized by comprising the following raw materials in parts by weight: 24-30 parts of high alumina cement, 5-8 parts of portland cement, 3-5 parts of fly ash, 2-4 parts of aluminum dihydroxy formate, 3-6 parts of gypsum, 32-36 parts of quartz sand coarse sand, 23-30 parts of quartz sand medium sand, 6.2-7.5 parts of quartz sand fine sand, 4.8-5.6 parts of coagulant aid, 0.15-0.2 part of water reducing agent, 0.1-0.16 part of tackifier, 0.14-0.18 part of early strength admixture, 0.18-0.25 part of shrinkage reducer, 0.08-0.12 part of defoaming agent, 0.2-0.4 part of PP fiber and 0.23-0.28 part of anti-sagging agent.
2. The ultra-rapid-setting and ultra-early-strength vertical repair material as claimed in claim 1, wherein the preparation method of the coagulant aid comprises the following steps:
according to the mass ratio of 7-10: 1, accurately weighing an appropriate amount of aluminum sulfate and polyacrylamide, placing the aluminum sulfate and the polyacrylamide in a reaction kettle, respectively adding 8-10 times of distilled water by mass of aluminum sulfate into the reaction kettle, uniformly mixing and stirring, adding 2.5-3.2% by mass of sodium dodecyl benzene sulfonate and 18-26% by mass of 3-aminopropyltriethoxysilane into the reaction kettle, ultrasonically dispersing for 5-10 min, adjusting the temperature in the reaction kettle to 60-75 ℃, reacting at the constant temperature for 10-15 h, naturally cooling to room temperature after the reaction is finished, filtering and washing the mixed components in the reaction kettle for 2-3 times by alcohol; and finally, placing the obtained solid powder in a constant-temperature drying box for drying treatment, wherein the obtained solid powder is the coagulant aid finished product.
3. The method for preparing the ultra-fast-setting and ultra-early-strength vertical repairing material according to claim 1, wherein the method comprises the following steps: the water reducing agent is any one of a polycarboxylic acid water reducing agent or a lignosulfonate water reducing agent.
4. The method for preparing the ultra-fast-setting and ultra-early-strength vertical repairing material according to claim 1, wherein the method comprises the following steps: the tackifier is any one of cellulose ether tackifiers or polyvinyl alcohol tackifiers.
5. The method for preparing the ultra-fast-setting and ultra-early-strength vertical repairing material according to claim 1, wherein the method comprises the following steps: the early strength agent is any one of calcium formate and calcium acetate.
6. The method for preparing the ultra-fast-setting and ultra-early-strength vertical repairing material according to claim 1, wherein the method comprises the following steps: the shrinkage reducing agent is any one of sodium lauraminopropionate, sodium laurimino dipropionate or laurylamine polyoxyethylene ether.
7. The method for preparing the ultra-fast-setting and ultra-early-strength vertical repairing material according to claim 1, wherein the method comprises the following steps: the defoaming agent is one of polyether defoaming agent or organic silicon defoaming agent.
8. The method for preparing the ultra-fast-setting and ultra-early-strength vertical repairing material according to claim 1, wherein the method comprises the following steps: the anti-sagging agent is any one of CrayvallacSL, CrayvallacSLX and Degussa fumed silica R972.
9. The method for preparing the ultra-fast-setting and ultra-early-strength vertical repairing material according to any one of claims 1 to 8, characterized by comprising the following steps:
s1, accurately weighing the materials according to the weight ratio, respectively placing the solid raw materials into an ore crusher for crushing, respectively sieving each solid powder obtained after crushing through a sieve with the aperture of 0.2-0.5 mm, and respectively storing each solid fine powder obtained after sieving for later use;
s2, putting the solid fine powder obtained in the step S1 and raw materials except the coagulant aid, the water reducing agent, the tackifier, the early strength agent, the shrinkage reducing agent, the defoaming agent and the anti-sagging agent into a mixer, and mixing and stirring at the speed of 80-120 r/min for 5-8 min; and then adding the rest raw materials into a mixer, uniformly stirring at the speed of 180-300 r/min for 10-15 min, and finally obtaining the finished product of the ultra-fast setting and ultra-early strength vertical face repairing material in the mixing kettle.
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| CN111377654A (en) * | 2018-12-29 | 2020-07-07 | 江苏苏博特新材料股份有限公司 | Hybrid alkali-free accelerator and preparation method thereof |
| CN110395939A (en) * | 2019-06-19 | 2019-11-01 | 科之杰新材料集团有限公司 | A kind of enhancement type waterproof alkali-free liquid accelerator and preparation method thereof |
| CN111018392A (en) * | 2019-11-27 | 2020-04-17 | 江苏苏博特新材料股份有限公司 | Method for synthesizing fluoride-free alkali-free accelerator at normal temperature |
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