CN110683781A - Calcium fluoroaluminate concrete accelerator - Google Patents
Calcium fluoroaluminate concrete accelerator Download PDFInfo
- Publication number
- CN110683781A CN110683781A CN201810740806.2A CN201810740806A CN110683781A CN 110683781 A CN110683781 A CN 110683781A CN 201810740806 A CN201810740806 A CN 201810740806A CN 110683781 A CN110683781 A CN 110683781A
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- CN
- China
- Prior art keywords
- concrete
- calcium fluoroaluminate
- calcium
- accelerator
- fluoroaluminate
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- 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
- 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
-
- 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
- C04B2103/10—Accelerators; Activators
- C04B2103/12—Set accelerators
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a calcium fluoroaluminate concrete accelerator and a preparation method thereof, and the product belongs to the field of chemical building materials, and the raw material formula comprises the following components in percentage by weight: 10-15% of calcium fluoroaluminate, 5-10% of bauxite, 3% of quick lime, 2% of sodium carbonate, 1% of sprayed concrete thickening agent and 74% of water, and the finished product is prepared by crushing and mixing; the preparation method has simple process, low production cost and good product quality, can quickly coagulate concrete after being added into silicate concrete, has early strength, high strength, good frost resistance, impermeability and corrosion resistance, is nontoxic, and has no influence on the health of operators engaged in spraying concrete.
Description
Technical Field
The invention belongs to the field of chemical building materials, and particularly relates to a calcium fluoroaluminate concrete accelerator and a preparation method thereof.
Background
The concrete accelerator is an additive which can be doped into concrete and can make concrete quickly set and harden, and its appearance is powdered solid or liquid, and their action is to accelerate hydration and hardening of cement, and can form enough strength in a short time to ensure the requirements of special construction, and its doping quantity is 2% -3% of cement dosage, and it is an indispensable additive in concrete-spraying construction method. The calcium fluoroaluminate is one of raw materials for preparing the concrete accelerator, the calcium fluoroaluminate is a fluorine-containing calcium aluminate mineral, and has quick-hardening early-strength performance and refractive index of 1.601, the quick-hardening early-strength performance is particularly suitable for being used in portland cement, and the concrete prepared by the calcium fluoroaluminate accelerator is widely applied to rush repair and rush construction engineering, prefabricated parts and low-temperature construction engineering, and has the advantages that: quick setting, early strength and high strength; the coating has good freezing resistance; and (5) resisting seepage. The single calcium fluoroaluminate is a silicate concrete accelerator, and in order to make the accelerating effect better, partial materials are added to enhance the accelerating effect. The invention is a quick-setting admixture prepared from calcium fluoroaluminate as main raw material, the formulation is calcium fluoroaluminate, bauxite, quicklime, sodium carbonate, sprayed concrete dope, the concrete quick-setting admixture is prepared by blending process, the preparation method has simple process, low production cost and good product quality, after being added into silicate concrete, the quick-setting admixture can quickly coagulate concrete, has early strength, high strength, good frost resistance, impermeability and corrosion resistance, is nontoxic and has no influence on the health of operators engaged in spraying concrete.
Disclosure of Invention
The invention aims to solve the problem of providing a calcium fluoroaluminate concrete accelerator and a preparation method thereof, wherein the raw materials used for producing the product comprise the following components in parts by weight: 10-15% of calcium fluoroaluminate, 5-10% of bauxite, 3% of quicklime, 2% of sodium carbonate, 1% of sprayed concrete thickening agent and 74% of water.
The technical scheme adopted by the invention is as follows:
(1) respectively feeding the formula amounts of calcium fluoroaluminate, bauxite, quicklime, sodium carbonate and sprayed concrete thickening agent into a pulverizer to pulverize into powder;
(2) feeding the water with the formula ratio into a chemical reaction kettle, adjusting the temperature to 45-47 ℃ while stirring, slowly adding the crushed calcium fluoroaluminate powder, and stirring until the calcium fluoroaluminate powder is completely dissolved; and continuously stirring, controlling the temperature to be 22-24 ℃, sequentially adding the crushed bauxite, the quick lime, the sodium carbonate and the sprayed concrete viscous agent into the chemical reaction kettle, and uniformly stirring to obtain a finished product.
(3) The application method of the calcium fluoroaluminate concrete accelerator comprises the following steps: the calcium fluoroaluminate concrete accelerator is injected and mixed 2-3% of the calcium fluoroaluminate concrete accelerator in the position 2 meters in front of a concrete spraying nozzle, the concrete is mixed in the moving process of 2 meters, and then the mixed concrete accelerator is quickly sprayed out of the spraying nozzle for pouring.
Preferably, the purity of the calcium fluoroaluminate is 85%.
The invention has the beneficial effects that: the calcium fluoroaluminate concrete accelerator and the preparation method thereof are provided, the preparation method has simple process, low production cost and good product quality, and after the calcium fluoroaluminate concrete accelerator is added into silicate concrete, the concrete can be quickly condensed, is early-strength and high-strength, has good frost resistance, impermeability and corrosion resistance, is nontoxic, and has no influence on the health of operators engaged in spraying concrete.
Detailed Description
Example 1
Respectively feeding 10% of calcium fluoroaluminate, 10% of bauxite, 3% of quick lime, 2% of sodium carbonate and 1% of sprayed concrete thickening agent into a pulverizer to pulverize into powder; feeding 74% of water into a chemical reaction kettle, adjusting the temperature to 45 ℃ while stirring, slowly adding the crushed calcium fluoroaluminate powder, and stirring until the calcium fluoroaluminate powder is completely dissolved; continuously stirring, controlling the temperature at 22 ℃, sequentially adding the crushed bauxite, the quick lime, the sodium carbonate and the sprayed concrete viscous agent into the chemical reaction kettle, and uniformly stirring to obtain a finished product; the application method of the calcium fluoroaluminate concrete accelerator comprises the following steps: the calcium fluoroaluminate concrete accelerator is injected and mixed 2 meters in front of a concrete spraying nozzle according to the proportion of 2 percent, the concrete is mixed in the moving process of 2 meters, and then the mixture is quickly sprayed and poured from the spraying nozzle.
Example 2
Respectively feeding 12.5 percent of calcium fluoroaluminate, 7.5 percent of bauxite, 3 percent of quicklime, 2 percent of sodium carbonate and 1 percent of sprayed concrete thickening agent into a crusher to be crushed into powder; feeding 74% of water into a chemical reaction kettle, adjusting the temperature to 46 ℃ while stirring, slowly adding the crushed calcium fluoroaluminate powder, and stirring until the calcium fluoroaluminate powder is completely dissolved; continuously stirring, controlling the temperature at 23 ℃, sequentially adding the crushed bauxite, the quick lime, the sodium carbonate and the sprayed concrete viscous agent into the chemical reaction kettle, and uniformly stirring to obtain a finished product; the application method of the calcium fluoroaluminate concrete accelerator comprises the following steps: the calcium fluoroaluminate concrete accelerator is injected and mixed 2.5 percent of the calcium fluoroaluminate concrete accelerator in the position 2 meters in front of a concrete spraying nozzle, the concrete is mixed in the moving process of 2 meters, and then the calcium fluoroaluminate concrete accelerator is quickly sprayed and poured from the spraying nozzle.
Example 3
Respectively feeding 15% of calcium fluoroaluminate, 5% of bauxite, 3% of quick lime, 2% of sodium carbonate and 1% of sprayed concrete thickening agent into a pulverizer to pulverize into powder; feeding 74% of water into a chemical reaction kettle, adjusting the temperature to 47 ℃ while stirring, slowly adding the crushed calcium fluoroaluminate powder, and stirring until the calcium fluoroaluminate powder is completely dissolved; continuously stirring, controlling the temperature at 24 ℃, sequentially adding the crushed bauxite, the quick lime, the sodium carbonate and the sprayed concrete viscous agent into the chemical reaction kettle, and uniformly stirring to obtain a finished product; the application method of the calcium fluoroaluminate concrete accelerator comprises the following steps: the calcium fluoroaluminate concrete accelerator is injected and blended 2 meters in front of a concrete spraying nozzle according to the proportion of 3 percent, the concrete is blended in the moving process of 2 meters, and then the mixture is quickly sprayed and poured from the spraying nozzle.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and are intended to be included within the scope of the invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. The calcium fluoroaluminate concrete accelerator comprises the following raw materials in percentage by weight: 10-15% of calcium fluoroaluminate, 5-10% of bauxite, 3% of quicklime, 2% of sodium carbonate, 1% of sprayed concrete thickening agent and 74% of water; the method is characterized in that:
(1) respectively feeding the formula amounts of calcium fluoroaluminate, bauxite, quicklime, sodium carbonate and sprayed concrete thickening agent into a pulverizer to pulverize into powder;
(2) feeding the water with the formula ratio into a chemical reaction kettle, adjusting the temperature to 45-47 ℃ while stirring, slowly adding the crushed calcium fluoroaluminate powder, and stirring until the calcium fluoroaluminate powder is completely dissolved; and continuously stirring, controlling the temperature to be 22-24 ℃, sequentially adding the crushed bauxite, the quick lime, the sodium carbonate and the sprayed concrete viscous agent into the chemical reaction kettle, and uniformly stirring to obtain a finished product.
2. The calcium fluoroaluminate concrete accelerator as set forth in claim 1, wherein: the purity of the calcium fluoroaluminate is 85%.
3. The use method of the calcium sulphoaluminate silicate concrete accelerator as set forth in claim 1 is as follows: the calcium fluoroaluminate concrete accelerator is injected and mixed 2-3% of the calcium fluoroaluminate concrete accelerator in the position 2 meters in front of a concrete spraying nozzle, the concrete is mixed in the moving process of 2 meters, and then the mixed concrete accelerator is quickly sprayed out of the spraying nozzle for pouring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810740806.2A CN110683781A (en) | 2018-07-08 | 2018-07-08 | Calcium fluoroaluminate concrete accelerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810740806.2A CN110683781A (en) | 2018-07-08 | 2018-07-08 | Calcium fluoroaluminate concrete accelerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110683781A true CN110683781A (en) | 2020-01-14 |
Family
ID=69107390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810740806.2A Withdrawn CN110683781A (en) | 2018-07-08 | 2018-07-08 | Calcium fluoroaluminate concrete accelerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110683781A (en) |
-
2018
- 2018-07-08 CN CN201810740806.2A patent/CN110683781A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200114 |