CN119019109B - Hydrated calcium carbonate aluminate early strength agent for concrete and preparation method and application thereof - Google Patents
Hydrated calcium carbonate aluminate early strength agent for concrete and preparation method and application thereof Download PDFInfo
- Publication number
- CN119019109B CN119019109B CN202411515137.0A CN202411515137A CN119019109B CN 119019109 B CN119019109 B CN 119019109B CN 202411515137 A CN202411515137 A CN 202411515137A CN 119019109 B CN119019109 B CN 119019109B
- Authority
- CN
- China
- Prior art keywords
- early strength
- calcium carbonate
- concrete
- strength agent
- hydrated calcium
- 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.)
- Active
Links
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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
本发明公开了一种混凝土用水合碳铝酸钙早强剂及其制备方法和应用，属于建筑材料混凝土外加剂技术领域，将含胶凝材料X的碱性混合液和碳酸盐溶液混合，依次进行高速搅拌水化、过滤、烘干和研磨，制备得到所述水合碳铝酸钙早强剂。本发明公开的制备方法简单易行，原材料种类少且便宜易得，制备得到的早强剂早强效果优异，且不影响混凝土后期抗压强度。
The invention discloses a hydrated calcium aluminate carbonate early strength agent for concrete and a preparation method and application thereof, belonging to the technical field of building material concrete admixtures. An alkaline mixed solution containing a cementitious material X and a carbonate solution are mixed, and high-speed stirring hydration, filtering, drying and grinding are performed in sequence to prepare the hydrated calcium aluminate carbonate early strength agent. The preparation method disclosed in the invention is simple and easy to implement, the raw materials are few in variety and cheap and easy to obtain, the prepared early strength agent has excellent early strength effect, and does not affect the later compressive strength of concrete.
Description
Technical Field
The invention belongs to the technical field of building material concrete additives, and particularly relates to a hydrated calcium carbonate aluminate early strength agent for concrete, a preparation method and application thereof.
Background
The early strength agent is a concrete additive which can be used for accelerating the hydration hardening of cement and effectively improving the early strength of concrete. The admixture is generally adopted in winter construction, emergency repair or engineering needing to reach strength quickly, has indispensable important roles in certain building engineering and cement concrete product production, can bring economic benefit and engineering benefit for the building engineering, and improves the efficiency and economic benefit for the cement concrete product production.
The early strength agent can achieve the effects of low dosage and high early strength, is simple and convenient to use, and is beneficial to improving the production efficiency. However, the traditional early strength agent can mostly cause later strength collapse and concrete working performance reduction while improving the early strength of the concrete.
The early strength agent has various kinds, different early strength agents can have different influences on concrete, for example, chloride is an early strength agent with the best early strength effect at present, but chloride ions are introduced to accelerate corrosion of reinforcing steel bars, so that the durability of the concrete is reduced, the early strength agent is forbidden to be used in reinforced concrete, sulfate early strength agents are easy to cause concrete frosting, alkali aggregate reaction, sulfate corrosion and the like, and can possibly cause coarsening of a later-stage pore structure of the concrete, and organic early strength agents, such as calcium formate, triethanolamine, early strength polycarboxylate water reducer and the like, have small doping amount and are not easy to control, and excessive doping can cause concrete retarder and are not suitable for steam curing concrete. In addition, many researches are carried out at present on organic-inorganic composite early strength agents, the early strength effect of the composite early strength agent is remarkable, the early strength agent has the effect of supplementing the two types of early strength agents, but the early strength agent has the advantages of complex action mechanism, unstable components and difficult control of the doping amount in practical application.
The hydrated calcium carbonate (3 CaO. Al 2O3·CaCO3·11H2 O, HCAC) exists stably in the form of single calcium carbonate crystal, and the early strength of the concrete can be obviously improved by adding the hydrated calcium carbonate into the cement concrete. The hydrated calcium carbonate has better insolubility and stability, can stably exist in concrete, is not easy to decompose or convert, and is helpful for maintaining the early strength of the concrete. Few studies on the hydrated calcium carbonate as a concrete early strength agent show that the addition of the calcium carbonate fine powder in cement concrete can promote the generation of the hydrated calcium carbonate in the concrete and can improve the compressive strength of the concrete in all ages. Chinese patent CN117303835A proposes a calcium carbonate cementing material, a preparation method and application thereof, which mainly utilizes calcium carbonate solid waste and aluminum-containing phase active minerals to prepare hydrated calcium carbonate, and is added with alkali-exciting agent and coagulation regulating component, belonging to a treatment method of calcium carbonate solid waste, wherein the prepared hydrated calcium carbonate cementing material has higher content of inactive calcium carbonate, can be presumed that if the calcium carbonate cementing material is used as an early strength agent, the effect can be greatly reduced, and the calcium carbonate solid waste can meet the required calcium carbonate fineness through procedures of crushing, drying, grinding and the like, and has higher energy consumption.
Therefore, there is a need to provide a hydrated calcium carbonate early strength agent which has simple process, excellent early strength effect and does not affect the later compressive strength of concrete.
Disclosure of Invention
Aiming at the technical problems, the invention provides a hydrated calcium carbonate aluminate early strength agent for concrete, and a preparation method and application thereof. The early strength agent of the hydrated calcium carbonate aluminate has the advantages of few raw material types, low cost, easy obtainment, simple preparation process, less equipment requirement, capability of carrying out industrialized mass production, excellent early strength effect of the prepared early strength agent and no influence on the later compressive strength of concrete.
In order to achieve the above purpose, the present invention provides the following technical solutions:
one of the technical schemes of the invention is as follows:
the preparation method of the hydrated calcium carbonate aluminate early strength agent for concrete comprises the following steps:
Mixing the alkaline mixed solution containing the gelling material X with a carbonate solution, and sequentially carrying out high-speed stirring hydration, filtering, drying and grinding to prepare the hydrated calcium carbonate early strength agent;
Wherein the cementing material X is aluminate cement, and the volume ratio of the alkaline mixed solution containing the cementing material X to the carbonate solution is 1:0.2-1.
The method has the beneficial effects that the hydrated calcium carbonate aluminate prepared in the volume ratio range has high content and less impurities, if the adding amount of the carbonate is small, enough hydrated calcium carbonate aluminate is not generated, if the adding amount of the carbonate is large, more calcium carbonate impurities are generated, and the early strength effect of the early strength agent is reduced.
Preferably, the cementing material X is aluminate cement conforming to GB/T201-2015.
Further, the cementing material X comprises one or more of CA50, CA60, CA70, and CA 80.
Preferably, the mass concentration of the alkaline mixed solution containing the gelling material X is 10% -50%;
The pH of the alkaline mixed solution containing the gelling material X is 13+/-1.
The early strength agent prepared under the pH value condition defined by the invention has the advantages that the early strength agent has better strength, and if the pH value is lower than the early strength agent, byproducts such as aluminum hydroxide gel and the like can appear to influence the cement strength.
Preferably, the alkaline mixed solution containing the gel material X is prepared by dissolving the gel material X in water, adding a pH regulator and uniformly mixing;
The pH regulator is a soluble alkaline substance.
Further, the soluble alkaline substance includes an alkali metal hydroxide (preferably sodium hydroxide, potassium hydroxide) or sodium metaaluminate.
Preferably, the mass concentration of the carbonate solution is 10% -50%.
The method has the beneficial effects that the normal operation of the reaction can be ensured and the yield of the hydrated calcium carbonate aluminate can be improved under the mass concentration of the carbonate solution defined by the invention. The problems of low yield of hydrated calcium carbonate aluminate, high cost, precipitation of a large amount of ions due to the excessively high concentration, slow reaction progress and the like are avoided.
Further, the carbonate in the carbonate solution includes potassium carbonate, sodium carbonate, or ammonium carbonate.
Preferably, the rotating speed in the high-speed stirring hydration process is 100-2000r/min, and the high-speed stirring hydration time is 5-10h.
The rotating speed range has the beneficial effects that the reactants can be stirred and mixed uniformly and react fully in the rotating speed range, and the excessively high production energy consumption and the steep increase of the cost are avoided.
Preferably, the drying temperature in the drying process is 40-100 ℃, and the drying is carried out to constant weight.
Preferably, the grinding process is that the dried product is ground to have an average particle size of 200-2500 meshes.
The particle size range is matched with the particle size range of the concrete cementing material, the hydration reaction process can be influenced if the powder is too coarse, and the energy consumption is too large although the early strength effect is partially improved if the powder is too fine.
The second technical scheme of the invention is as follows:
The early strength agent of hydrated calcium carbonate aluminate for concrete is prepared by the preparation method.
The third technical scheme of the invention:
the application of the hydrated calcium carbonate early strength agent for concrete in improving the early strength of concrete.
Preferably, the folding and solidifying doping amount of the hydrated calcium carbonate early strength agent is 1-5wt.% of the cementing material Y;
The cementing material Y is a raw material in the concrete.
Compared with the prior art, the invention has the following advantages and technical effects:
1. the hydrated calcium carbonate early strength agent prepared by the method has the advantages of few production raw material types, simple preparation process, less required production equipment and easy industrial production;
2. According to the preparation method of the early strength agent of the hydrated calcium carbonate aluminate, disclosed by the invention, the early strength agent with excellent early strength effect is prepared by adjusting the proportion and grinding fineness of raw materials, and the early strength agent has good adaptability to cementing materials;
3. the hydrated calcium carbonate early strength agent prepared by the method has simple use method and can be directly used in the concrete stirring process
The additive has better dispersing effect in a concrete system;
4. The hydrated calcium carbonate early strength agent prepared by the method has the advantages of small dosage, obvious early strength effect and capability of improving the later strength of concrete by a small margin.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 is an XRD pattern of the hydrated calcium carbonate early strength agent powders prepared in examples 1-5;
FIG. 2 is a graph showing the particle size distribution of the early strength agent powder of hydrated calcium carbonate obtained in examples 1 to 5.
Detailed Description
Various exemplary embodiments of the invention will now be described in detail, which should not be considered as limiting the invention, but rather as more detailed descriptions of certain aspects, features and embodiments of the invention.
It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In addition, for numerical ranges in this disclosure, it is understood that each intermediate value between the upper and lower limits of the ranges is also specifically disclosed. Every smaller range between any stated value or stated range, and any other stated value or intermediate value within the stated range, is also encompassed within the invention. The upper and lower limits of these smaller ranges may independently be included or excluded in the range.
Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Although only preferred methods and materials are described herein, any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention. All documents mentioned in this specification are incorporated by reference for the purpose of disclosing and describing the methods and/or materials associated with the documents. In case of conflict with any incorporated document, the present specification will control.
It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the invention described herein without departing from the scope or spirit of the invention. Other embodiments will be apparent to those skilled in the art from consideration of the specification of the present invention. The specification and examples of the present invention are exemplary only.
As used herein, the terms "comprising," "including," "having," "containing," and the like are intended to be inclusive and mean an inclusion, but not limited to.
The invention discloses a hydrated calcium carbonate aluminate early strength agent for concrete, a preparation method and application thereof, wherein the early strength agent comprises raw materials of carbonate, pH regulator and cementing material, through high-speed mechanical stirring by adding water, filtering, drying and grinding, the concrete early strength agent containing a large amount of hydrated calcium carbonate aluminate is finally prepared.
The carbonate is soluble carbonate, including potassium carbonate, sodium carbonate, ammonium carbonate and other soluble carbonate, and the purity of the soluble carbonate should reach above industrial level.
The pH regulator is soluble alkaline matters including alkali metal hydroxide (sodium hydroxide and potassium hydroxide), sodium metaaluminate and other soluble alkaline matters, and the purity of the alkaline materials should reach above industrial grade.
The cementing material is aluminate cement of the types of CA50, CA60, CA70, CA80 and the like which accord with GB/T201-2015 aluminate cement.
The preparation method of the hydrated calcium carbonate aluminate early strength agent for concrete comprises the following steps:
Dissolving a cementing material in tap water, wherein the mass percentage concentration is 10% -50%, and regulating the pH value of the mixed solution to 13+ -1 by using a pH regulator to obtain a mixed solution A;
dissolving carbonate into tap water, wherein the mass percentage concentration is 10% -50%, and obtaining a solution B;
Mixing the mixed solution A and the solution B according to the volume ratio of 1:0.2-1, and stirring and hydrating for 5-10h at a high speed in a high-speed stirrer, wherein the stirring speed is 100-2000 r/min;
step four, filtering the mixed solution after stirring and hydrating to obtain a hydrated calcium carbonate cake, and drying the cake in a drying oven at a drying temperature of 40-100 ℃;
grinding the dried hydrated calcium carbonate aluminate by a ball mill until the average particle size is 200-2500 meshes, and obtaining the hydrated calcium carbonate aluminate early strength agent powder for concrete.
The mixing amount of the hydrated calcium carbonate early strength agent in the concrete is 1-5% of the mass of the cementing material.
As used herein, the term "room temperature" refers to 20-30℃unless otherwise specified.
The "parts" in the present invention refer to parts by mass unless otherwise specified.
The raw materials used in the invention are all purchased in the market.
The technical scheme of the invention is further described by the following examples.
Example 1
The preparation method of the hydrated calcium carbonate aluminate early strength agent for concrete comprises the following steps:
Dissolving cementing material CA50 aluminate cement in tap water with the mass percentage concentration of 10%, and regulating the pH value of the mixed solution to 13+/-1 by using a pH regulator sodium hydroxide to obtain mixed solution A;
dissolving sodium carbonate into tap water, wherein the mass percentage concentration is 10%, so as to obtain a solution B;
Mixing the mixed solution A and the solution B according to the volume ratio of 1:0.2, and stirring and hydrating for 5 hours at a high speed in a high-speed stirrer, wherein the stirring speed is 100r/min;
Step four, filtering the mixed solution after stirring and hydrating to obtain a hydrated calcium carbonate cake, and drying the cake in a drying oven at a temperature of 40 ℃;
Grinding the dried hydrated calcium carbonate aluminate to 2500 meshes in average particle size by using a ball mill to obtain the hydrated calcium carbonate aluminate early strength agent powder for concrete.
Example 2
The preparation method of the hydrated calcium carbonate aluminate early strength agent for concrete comprises the following steps:
Dissolving cementing material CA60 aluminate cement in tap water, wherein the mass percentage concentration is 20%, and adjusting the pH value of the mixed solution to 13+/-1 by using a pH regulator sodium metaaluminate to obtain mixed solution A;
dissolving sodium carbonate into tap water, wherein the mass percentage concentration is 20%, so as to obtain a solution B;
mixing the mixed solution A and the solution B according to the volume ratio of 1:0.4, and stirring and hydrating for 6 hours at a high speed in a high-speed stirrer, wherein the stirring speed is 500r/min;
step four, filtering the mixed solution after stirring and hydrating to obtain a hydrated calcium carbonate cake, and drying the cake in a drying oven at a drying temperature of 55 ℃;
Grinding the dried hydrated calcium carbonate aluminate to an average particle size of 1500 meshes by using a ball mill to obtain the hydrated calcium carbonate aluminate early strength agent powder for concrete.
Example 3
The preparation method of the hydrated calcium carbonate aluminate early strength agent for concrete comprises the following steps:
Step one, dissolving a cementing material CA70 in tap water, wherein the mass percentage concentration is 30%, and regulating the pH value of the mixed solution to 13+/-1 by using a pH regulator potassium hydroxide to obtain a mixed solution A;
step two, potassium carbonate is taken and dissolved in tap water, and the mass percentage concentration is 30%, so that a solution B is obtained;
Mixing the mixed solution A and the solution B according to the volume ratio of 1:0.6, and stirring and hydrating for 7 hours at a high speed in a high-speed stirrer, wherein the stirring speed is 1000r/min;
Step four, filtering the mixed solution after stirring and hydrating to obtain a hydrated calcium carbonate cake, and drying the cake in a drying oven at the temperature of 70 ℃;
grinding the dried hydrated calcium carbonate aluminate to an average particle size of 1000 meshes by using a ball mill to obtain the hydrated calcium carbonate aluminate early strength agent powder for concrete.
Example 4
The preparation method of the hydrated calcium carbonate aluminate early strength agent for concrete comprises the following steps:
step one, dissolving a cementing material CA70 in tap water, wherein the mass percentage concentration is 40%, and regulating the pH value of the mixed solution to 13+/-1 by using a pH regulator potassium hydroxide to obtain a mixed solution A;
step two, potassium carbonate is taken and dissolved in tap water, and the mass percentage concentration is 40% to obtain a solution B;
mixing the mixed solution A and the solution B according to the volume ratio of 1:0.8, and stirring and hydrating for 8 hours at a high speed in a high-speed stirrer, wherein the stirring speed is 1500r/min;
Step four, filtering the mixed solution after stirring and hydrating to obtain a hydrated calcium carbonate cake, and drying the cake in a drying oven at a temperature of 85 ℃;
grinding the dried hydrated calcium carbonate aluminate to an average particle size of 500 meshes by using a ball mill to obtain the hydrated calcium carbonate aluminate early strength agent powder for concrete.
Example 5
The preparation method of the hydrated calcium carbonate aluminate early strength agent for concrete comprises the following steps:
Dissolving a cementing material CA80 in tap water, wherein the mass percentage concentration is 50%, and regulating the pH value of the mixed solution to 13+/-1 by using a pH regulator sodium hydroxide to obtain a mixed solution A;
step two, ammonium carbonate is taken and dissolved in tap water, and the mass percentage concentration is 50% to obtain a solution B;
mixing the mixed solution A and the solution B according to the volume ratio of 1:1, and stirring and hydrating for 10 hours at a high speed in a high-speed stirrer, wherein the stirring speed is 2000r/min;
step four, filtering the mixed solution after stirring and hydrating to obtain a hydrated calcium carbonate cake, and drying the cake in a drying oven at a temperature of 100 ℃;
Grinding the dried hydrated calcium carbonate aluminate to an average particle size of 200 meshes by using a ball mill to obtain the hydrated calcium carbonate aluminate early strength agent powder for concrete.
Blank group (without any early strength agent in concrete)
Comparative example 1 (not within the volume ratio defined by the present invention)
The preparation method of the hydrated calcium carbonate aluminate early strength agent for concrete comprises the following steps:
Dissolving cementing material CA60 aluminate cement in tap water, wherein the mass percentage concentration is 20%, and adjusting the pH value of the mixed solution to 13+/-1 by using a pH regulator sodium metaaluminate to obtain mixed solution A;
dissolving sodium carbonate into tap water, wherein the mass percentage concentration is 20%, so as to obtain a solution B;
mixing the mixed solution A and the solution B according to the volume ratio of 1:0.05, and stirring and hydrating for 6 hours at a high speed in a high-speed stirrer, wherein the stirring speed is 500r/min;
step four, filtering the mixed solution after stirring and hydrating to obtain a hydrated calcium carbonate cake, and drying the cake in a drying oven at a drying temperature of 55 ℃;
Grinding the dried hydrated calcium carbonate aluminate to an average particle size of 1500 meshes by using a ball mill to obtain the hydrated calcium carbonate aluminate early strength agent powder for concrete.
Comparative example 2 (not within the range of abrasive particle size defined by the present invention)
The preparation method of the hydrated calcium carbonate aluminate early strength agent for concrete comprises the following steps:
Dissolving cementing material CA60 aluminate cement in tap water, wherein the mass percentage concentration is 20%, and adjusting the pH value of the mixed solution to 13+/-1 by using a pH regulator sodium metaaluminate to obtain mixed solution A;
dissolving sodium carbonate into tap water, wherein the mass percentage concentration is 20%, so as to obtain a solution B;
mixing the mixed solution A and the solution B according to the volume ratio of 1:0.4, and stirring and hydrating for 6 hours at a high speed in a high-speed stirrer, wherein the stirring speed is 500r/min;
step four, filtering the mixed solution after stirring and hydrating to obtain a hydrated calcium carbonate cake, and drying the cake in a drying oven at a drying temperature of 55 ℃;
grinding the dried hydrated calcium carbonate aluminate to an average particle size of 50 meshes by using a ball mill to obtain the hydrated calcium carbonate aluminate early strength agent powder for concrete.
FIG. 1 shows XRD patterns of early strength calcium carbonate hydrate powder prepared in examples 1-5, and obvious calcium carbonate hydrate phases can be seen from the XRD patterns of the early strength calcium carbonate hydrate powder in each example in FIG. 1, but due to different proportions of raw materials, a small amount of impurities such as calcium carbonate, calcium hydroxide and the like are generated.
As can be seen from FIG. 2, the average particle size of the early strength agent powder of hydrated calcium carbonate prepared in examples 1-5 is 5 μm, the average particle size of example 2 is 9 μm, the average particle size of example 3 is 14 μm, the average particle size of example 4 is 33 μm, and the average particle size of example 5 is 74. Mu.m.
The early strength agents prepared in examples 1 to 5 and comparative examples 1 to 2 were added to C40 concrete in an admixture amount of 2% by mass of the cementing materials (cement and fly ash in Table 1) in the concrete, and the C40 concrete was blended as shown in Table 1. Wherein G represents coarse aggregate, and the lower corner mark is the particle size range of the coarse aggregate. The mechanical property test is carried out according to GB/T50081-2019 of the test method Standard of physical and mechanical properties of concrete.
TABLE 1C 40 concrete mix (kg/m 3)
Table 2 data for compressive strength test of concrete at different ages of standard
As can be seen from Table 2, examples 1-5 had a significant early strength effect at the ages of 8h and 1d compared to the blank without the early strength agent, and the compressive strengths of 7d and 28d were also slightly improved compared to the blank without the early strength agent. The compressive strength of each age of comparative examples 1-2 is greater than that of the blank group, but is obviously lower than that of each example group, and the early strength effect is weaker.
The present application is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present application are intended to be included in the scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims (6)
1. The preparation method of the hydrated calcium carbonate early strength agent for concrete is characterized by comprising the following steps of:
Mixing an alkaline mixed solution containing a gelling material X with a carbonate solution, and then sequentially carrying out high-speed stirring hydration, filtering, drying and grinding to prepare the hydrated calcium carbonate early strength agent;
Wherein the cementing material X is aluminate cement, the volume ratio of the alkaline mixed solution containing the cementing material X to the carbonate solution is 1:0.2-1, and the mass concentration of the carbonate solution is 10% -50%;
the gel-containing material X comprises one or more of CA50, CA60, CA70 and CA 80;
the mass percentage concentration of the alkaline mixed solution containing the gelling material X is 10% -50%;
The pH value of the alkaline mixed solution containing the gelling material X is 13+/-1;
The grinding process is that the dried product is ground into fine powder with the average grain diameter of 200-2500 meshes.
2. The preparation method of the early strength agent of hydrated calcium carbonate for concrete according to claim 1, which is characterized in that the preparation process of the alkaline mixed solution containing the gelling material X comprises the steps of dissolving the gelling material X in water, adding a pH regulator and uniformly mixing;
The pH regulator is a soluble alkaline substance.
3. The method for preparing the early strength agent of calcium carbonate hydrate for concrete according to claim 1, wherein the rotating speed in the high-speed stirring and hydration process is 100-2000r/min, and the high-speed stirring and hydration time is 5-10h.
4. A hydrated calcium carbonate aluminate early strength agent for concrete, characterized by being prepared by the preparation method of any one of claims 1 to 3.
5. The use of a hydrated calcium carbonate early strength agent for concrete according to claim 4 for improving early strength of concrete.
6. The use of a calcium carbonate hydrate early strength agent for concrete according to claim 5, wherein the folding and solidifying amount of the calcium carbonate hydrate early strength agent is 1-5wt.% of the cementing material Y;
The cementing material Y is a raw material in the concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411515137.0A CN119019109B (en) | 2024-10-29 | 2024-10-29 | Hydrated calcium carbonate aluminate early strength agent for concrete and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411515137.0A CN119019109B (en) | 2024-10-29 | 2024-10-29 | Hydrated calcium carbonate aluminate early strength agent for concrete and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN119019109A CN119019109A (en) | 2024-11-26 |
| CN119019109B true CN119019109B (en) | 2025-01-24 |
Family
ID=93540486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411515137.0A Active CN119019109B (en) | 2024-10-29 | 2024-10-29 | Hydrated calcium carbonate aluminate early strength agent for concrete and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN119019109B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118290062A (en) * | 2024-05-29 | 2024-07-05 | 石家庄市长安育才建材有限公司 | Nano hydrated calcium carbonate aluminate early strength agent and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110040990B (en) * | 2019-05-16 | 2021-07-06 | 重庆大学 | A kind of preparation method of carbonoaluminate cement and product thereof |
| CN113998916A (en) * | 2021-10-29 | 2022-02-01 | 四川华西绿舍建材有限公司 | Composite early strength agent for cement material in low-temperature environment and application thereof |
-
2024
- 2024-10-29 CN CN202411515137.0A patent/CN119019109B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118290062A (en) * | 2024-05-29 | 2024-07-05 | 石家庄市长安育才建材有限公司 | Nano hydrated calcium carbonate aluminate early strength agent and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 碳酸钙—铝酸盐矿物复合体系水化反应的影响因素;郑宇;《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》;20221015;B015-229 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN119019109A (en) | 2024-11-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110606722B (en) | A kind of building wall panel and preparation method thereof | |
| CN111978061A (en) | A kind of preparation method of high water resistance anhydrous phosphogypsum cementitious material | |
| CN111747672B (en) | Superfine modified phosphorus slag powder and superfine composite admixture for concrete | |
| CN113620672B (en) | Partially calcined limestone-calcined clay cement-based material and preparation method thereof | |
| CN118290062B (en) | Nano hydrated calcium carbonate aluminate early strength agent and preparation method thereof | |
| CN113735481B (en) | A kind of composite early-strength mineral admixture and its preparation method and application | |
| CN116874223A (en) | Powdery alkali-free accelerator and preparation method thereof | |
| CN116409948A (en) | Low-carbon composite cementing material based on regenerated micro powder, and preparation method and application thereof | |
| CN116283037B (en) | A commercial mixing station carbon-fixing admixture, and preparation method and application thereof | |
| CN110563369A (en) | Modified limestone powder, preparation method thereof and concrete | |
| CN106698988B (en) | A kind of phosphogypsum modified with carbonate rock and preparation method thereof | |
| CN115650628A (en) | Synergist for remarkably increasing mixing amount of low-activity mixed material in cement and application | |
| CN104016607A (en) | A liquid activator dedicated to a composite admixture and a preparing method thereof | |
| CN110255943A (en) | A kind of wet-milling barium slag admixture and its preparation method and application | |
| CN119019109B (en) | Hydrated calcium carbonate aluminate early strength agent for concrete and preparation method and application thereof | |
| CN115057635B (en) | High-strength cement clinker and production process thereof | |
| CN117735933A (en) | Baking-free phosphogypsum low-carbon gelling material, and preparation method and application thereof | |
| CN115259709B (en) | Modified glass bead and preparation method thereof, coagulation-accelerating early strength agent and preparation method thereof | |
| CN117585920A (en) | Low clinker cementitious material and its preparation method and application | |
| CN114988738B (en) | Modified dolomite powder, preparation method thereof and concrete | |
| CN114349455B (en) | A raw material of titanium gypsum composite roadbed material and its preparation method and titanium gypsum composite roadbed material | |
| CN114573318B (en) | Special mixture for aerated concrete and preparation method thereof | |
| CN115321937A (en) | Laterite-calcium carbonate-cement-based composite material and preparation method thereof | |
| CN114573269A (en) | Calcium silicate hydrate crystal nucleus early strength agent and preparation method thereof | |
| CN112500015A (en) | Nano aluminum hydroxide accelerator and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |