CN112408838A - Fluidized concrete powder quick-drying agent and use method thereof - Google Patents
Fluidized concrete powder quick-drying agent and use method thereof Download PDFInfo
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- CN112408838A CN112408838A CN202011301341.4A CN202011301341A CN112408838A CN 112408838 A CN112408838 A CN 112408838A CN 202011301341 A CN202011301341 A CN 202011301341A CN 112408838 A CN112408838 A CN 112408838A
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- 239000004567 concrete Substances 0.000 title claims abstract description 143
- 239000002274 desiccant Substances 0.000 title claims abstract description 70
- 239000000843 powder Substances 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims description 19
- 239000012530 fluid Substances 0.000 claims abstract description 35
- 238000002156 mixing Methods 0.000 claims abstract description 29
- 238000001035 drying Methods 0.000 claims abstract description 22
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 21
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 18
- 238000004064 recycling Methods 0.000 claims abstract description 14
- 150000004645 aluminates Chemical class 0.000 claims abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 7
- -1 aluminum ion Chemical class 0.000 claims abstract description 7
- 150000001408 amides Chemical class 0.000 claims abstract description 7
- 150000001875 compounds Chemical class 0.000 claims abstract description 7
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims abstract description 4
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims abstract description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 4
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 4
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000000292 calcium oxide Substances 0.000 claims abstract description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 4
- 150000003839 salts Chemical class 0.000 claims abstract description 4
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910001948 sodium oxide Inorganic materials 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 30
- 150000002505 iron Chemical class 0.000 claims description 3
- 238000009463 water soluble packaging Methods 0.000 claims description 3
- 239000004615 ingredient Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 239000002002 slurry Substances 0.000 description 10
- 239000004575 stone Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 238000012545 processing Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000001186 cumulative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011085 pressure filtration Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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
- C04B40/0042—Powdery mixtures
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The invention relates to the field of quick-drying agents for building concrete, in particular to a quick-drying agent for fluidized concrete powder, which comprises quick-drying components, dispersing and modifying components and stabilizing components, wherein: the quick-drying component is at least two of aluminate, aluminum ion-containing compound and carbonate; the dispersing and modifying components are at least two of amides, polymeric ferric salts and polymeric aluminum salts; the stabilizing component is at least one of sodium hydroxide, sodium oxide, calcium oxide and calcium hydroxide. The powder quick-drying agent can convert the remaining and returned fluid concrete in a mixing station into dry concrete granulated aggregate in a short time, and the concrete powder quick-drying agent can achieve the aim of recycling and utilizing the fluid concrete after commercial mixing and returning.
Description
Technical Field
The invention relates to the field of building concrete quick-drying agents, in particular to a fluid concrete powder quick-drying agent and a using method thereof.
Background
With the continuous acceleration of urbanization process in China, the construction industry, building material industry and other industries enter a high-speed development stage, the number of commodity mixing stations and the amount of premixed concrete suppliers increase year by year, and the corresponding premixed concrete remains and returns. Along with the requirement and the management and control strength of the state on the environment of the mixing plant are greatly improved, the problems of recycling and utilizing the grout water, which are derived from the traditional rollback concrete treatment mode, bring more economic loss and technical problems to the mixing plant. At present, the commercial mixing plant in China has the following modes for processing the returned concrete: 1. the retrograded concrete is subjected to sand, stone and waste slurry separation through a sand-stone separator and is recycled, so that the technical problem of secondary recovery and utilization of slurry and water is solved, and the economic cost is increased; 2. the retrograded concrete is subjected to field material transfer or concrete grade reduction, the processing mode is limited to certain limitation on time and space when a construction party has commodity requirements lower than those of the residual and retrograded concrete grades, the product value conversion rate is high, and the economic loss is less; 3. the special unit is used for recycling building backfilling or manufacturing additional concrete products, the treatment mode only solves the problem that the returned concrete cannot be discharged and treated, the product value of the concrete cannot be recycled, the recycling cost is high, and the product market is small. The concrete powder quick-drying agent can uniformly stir fluid concrete for a short time to convert the fluid concrete into dry granulated concrete aggregate, and the novel treatment mode has the advantages of high efficiency, low cost and small using amount, fully utilizes the superior conditions of the existing mixing plant to carry out secondary recycling, and achieves the purposes of recycling the fluid concrete residue and returned materials.
At present, the existing recovery modes aiming at the backing concrete of the mixing plant have the following three types: 1. separating the rest and the returned materials from sand, stone and waste slurry by a sand-stone separator, wherein the obtained sand and stone aggregate can be recycled for the second time, and the obtained slurry can be subjected to filter pressing by a filter press or the slurry can be directly applied to premixed concrete in a small amount; 2. the surplus and returned materials are subjected to engineering field material transfer or concrete grade reduction for use; 3. there are special units to recycle for building backfill or make concrete add-on products.
The existing traditional backspacing concrete processing mode has respective technical defects:
and (3) sand-stone separator treatment: 1. the treatment method has high equipment cost, and a large amount of cost needs to be invested in a short time; 2. the slurry water produced after being separated by the sand-stone separator is difficult to treat and use, the slurry water treated by the traditional sand-stone treatment separator is subjected to pressure filtration by a pressure filter to obtain mud cakes, and the mud cakes need to be transported outside or further treated by a technology, so that the economic cost is greatly increased; the slurry water treated by the existing sand-stone separator can be used in the ready-mixed concrete instead of tap water in a small amount, but the use of the slurry water can cause the reduction of the performance of the concrete and the improvement of the comprehensive cost.
Field transferring and label reducing treatment: the processing mode has certain limitation on time and space when the similar project has the same grade requirement in a short time or the construction party has the commodity requirement lower than the grade of the residual and returned concrete.
And (3) recovering and treating the specially-assigned people: the treatment mode only solves the problem that the returned concrete cannot be discharged and treated, cannot recover the product value of the concrete, and has low product value conversion rate, small product market and high recovery cost.
Disclosure of Invention
In order to solve the problems, the fluidized concrete powder quick-drying agent provided by the invention solves the difficult problem of recycling and utilizing the retrograded concrete, can convert the fluidized concrete in a mixing station into dry concrete granulated aggregate in a short time after the material is left and returned, and can achieve the aim of recycling and utilizing the commercial stirring retrograded fluidized concrete.
In order to achieve the purpose, the invention adopts the technical scheme that:
in a first technical scheme, the fluid concrete powder quick-drying agent comprises a quick-drying component, a dispersing and modifying component and a stabilizing component, wherein:
the quick-drying component is at least two of aluminate, aluminum ion-containing compound and carbonate;
the dispersing and modifying components are at least two of amides, polymeric ferric salts and polymeric aluminum salts;
the stabilizing component is at least one of sodium hydroxide, sodium oxide, calcium oxide and calcium hydroxide.
In the first embodiment, the quick-drying component is preferably a composition of an aluminate and an aluminum ion-containing compound.
In the first aspect, the dispersing and modifying component is preferably a combination of an amide and a polymeric iron salt.
In the first embodiment, the stabilizing component is preferably sodium hydroxide.
In the first technical means, preferably, the quick-drying component, the dispersing and modifying component and the stabilizing component are added in the amount of 1 cubic meter of concrete:
two of the quick-drying components are respectively added with 1.0kg-3.0kg and 0.2kg-1.0 kg;
0.5kg-3.0kg and 0.2kg-1.0kg of two dispersing and modifying components are respectively added;
the stable component is 0kg-1.0 kg.
In the first technical solution, preferably, the fluid concrete powder quick-drying agent is stored in a water-soluble packaging bag in a sealed manner, and each bag of the fluid concrete powder quick-drying agent is suitable for 1 cubic meter of fluid concrete.
In the second technical scheme, the method for using the fluidized concrete powder quick-drying agent comprises the steps of using the fluidized concrete powder quick-drying agent provided in the first technical scheme, throwing the fluidized concrete powder quick-drying agent with the number corresponding to the mixing amount of bags into a stirring vehicle, uniformly stirring for 3-8 min to obtain dry granulated concrete aggregate, then paving the granulated aggregate on the ground, naturally curing for at least 8h, and applying the partial mixing amount of the granulated aggregate to fresh concrete instead of the natural aggregate so as to achieve the purpose of secondary recycling.
In a third technical scheme, the method for using the fluidized concrete powder quick-drying agent comprises the steps of using the fluidized concrete powder quick-drying agent provided in the first technical scheme, throwing the fluidized concrete powder quick-drying agent with the number corresponding to the mixing bag number into a stirring truck, uniformly stirring for 3-8 min, then flatly paving the granulated aggregate on the ground for natural standing and curing for at least 8h, and turning over and stirring once by using a forklift for standing and natural curing for about 6-8 h to prevent the granulated aggregate from caking so as to facilitate secondary utilization of the granulated aggregate
In a fourth technical scheme, the method for using the fluid concrete powder quick-drying agent uses the fluid concrete powder quick-drying agent provided in the first technical scheme, and the fluid concrete powder quick-drying agent is used when fluid concrete is left and returned in a mixing plant.
The beneficial effects of the invention are as follows:
the fluidized concrete powder quick-drying agent comprises quick-drying components, dispersing and modifying components and stabilizing components, is low in short-term investment, simple in operation process and flexible and convenient to use, can realize zero emission of retrograded concrete and avoid the difficult problem of recycling of slurry, has the lowest cost compared with other treatment modes when the retrograded concrete is treated, has considerable comprehensive income and occupies a small area.
The concrete powder quick-drying agent can convert the remaining and returned fluid concrete in the mixing plant into dry concrete granulated aggregate in a short time, can achieve the aim of recycling and utilizing the commercial mixing returned fluid concrete, redefines the fluid concrete recycling process, and greatly relieves the pressure of the mixing plant on the ecological environment caused by the remaining and returned material problems.
Detailed Description
In order to make the purpose, technical solution and advantages of the present technical solution more clear, the present technical solution is further described in detail below with reference to specific embodiments. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present teachings.
A fluidized concrete powder quick-drying agent comprises quick-drying components, dispersing and modifying components and stabilizing components, wherein: the quick-drying component is at least two of aluminate, aluminum ion-containing compound and carbonate; the dispersing and modifying components are at least two of amides, polymeric ferric salts and polymeric aluminum salts; the stabilizing component is at least one of sodium hydroxide, sodium oxide, calcium oxide and calcium hydroxide.
Preferably, the quick drying component is a composition of an aluminate and an aluminum ion-containing compound. The dispersing and modifying component is preferably a combination of an amide and a polymeric iron salt. The stabilizing component is preferably sodium hydroxide.
Preferably, the quick-drying component, the dispersing and modifying component and the stabilizing component are respectively added into 1 cubic meter of concrete, wherein the addition amount of each concrete is 1.0kg-3.0kg and 0.2kg-1.0kg of each concrete in the quick-drying component; 0.5kg-3.0kg and 0.2kg-1.0kg of two dispersing and modifying components are respectively added; the stable component is 0kg-1.0 kg.
The fluid concrete powder quick-drying agent is stored in a water-soluble packaging bag in a sealed manner, and each bag of the fluid concrete powder quick-drying agent is suitable for 1 cubic meter of fluid concrete. The storage mode is convenient for the use of the fluidized concrete powder quick-drying agent.
A method for using the fluidized concrete powder quick-drying agent comprises the steps of using the fluidized concrete powder quick-drying agent, throwing the fluidized concrete powder quick-drying agent with the number corresponding to the number of the doped bags into a stirring vehicle, uniformly stirring for 3-8 min to obtain dry granulated concrete aggregate, paving the granulated aggregate on the ground, naturally curing for at least 8h, and applying the partial doping amount of the granulated aggregate to newly-mixed concrete instead of the natural aggregate to achieve the purpose of secondary recycling.
A using method of a fluidized concrete powder quick-drying agent comprises the steps of using the fluidized concrete powder quick-drying agent, throwing the fluidized concrete powder quick-drying agent with the number corresponding to the number of doped bags into a stirring truck, uniformly stirring for 3-8 min, then paving the granulated aggregate on the ground for natural standing and curing for at least 8h, and turning over and stirring once by using a forklift at the natural standing and curing for about 6-8 h to prevent the granulated aggregate from caking, so that the granulated aggregate can be secondarily utilized
The application method of the fluid concrete powder quick-drying agent is characterized in that the fluid concrete powder quick-drying agent is used when fluid concrete is left and returned in a mixing plant.
The formulation and the method of use of the concrete powder quick-drying agent will be described in detail below with reference to examples.
Example 1
A concrete powder quick-drying agent comprises two quick-drying components with respective addition amounts of 1m in unit cubic mass3The concrete is doped with 0kg-1kg and 0kg-0.2kg of two dispersing and modifying components, the addition amount of each component is 0kg-0.5kg and 0kg-0.2kg, and the stable component is 0kg-1.0 kg. 20L of newly mixed C35 concrete for controlling the slump of the concrete<210mm, extension<And 550mm, putting the powder quick-drying agent with the corresponding mixing amount into a container, uniformly stirring the powder quick-drying agent, uniformly mixing the powder quick-drying agent into a concrete mixer, stirring for 1min-3min, and detecting related indexes of the granulated concrete aggregate after stirring.
Example 2
A concrete powder quick-drying agent comprises two quick-drying components with respective addition amount of 1.0m in unit cubic mass31.0kg-3.0kg and 0.2kg-1.0kg of concrete are added into the concrete, and the two of the dispersing and modifying components are respectively added with 0kg-0.5kg and 0kg-0.2kg, and the stabilizing component is 0kg-1.0 kg. 20L of newly mixed C35 concrete for controlling the slump of the concrete<210mm, extension<And 550mm, putting the powder quick-drying agent with the corresponding mixing amount into a container, uniformly stirring the powder quick-drying agent, uniformly mixing the powder quick-drying agent into a concrete mixer, stirring for 1min-3min, and detecting related indexes of the granulated concrete aggregate after stirring.
Example 3
A concrete powder quick-drying agent comprises two quick-drying components with respective addition amount of 1.0m in unit cubic mass31.0kg-3.0kg and 0.2kg-1.0kg of concrete are added into the concrete, and the two of the dispersing and modifying components are respectively added with 0.5kg-3.0kg and 0.2kg-1.0kg, and the stabilizing component is 0kg-1.0 kg. 20L of newly mixed C35 concrete for controlling the slump of the concrete<210mm, extension<550mm, putting the powder quick-drying agent with corresponding mixing amount into a container, uniformly stirring the powder quick-drying agent, and then uniformly mixing the medicine into the stirring container and stirring for 1min-3And min, after stirring, carrying out relevant index detection on the granulated concrete aggregate.
Example 4
A concrete powder quick-drying agent comprises two quick-drying components with respective addition amount of 1.0m in unit cubic mass31.0kg-3.0kg and 0.2kg-1.0kg of concrete are added into the concrete, and the two of the dispersing and modifying components are respectively added with 0.5kg-3.0kg and 0.2kg-1.0kg, and the stabilizing component is 0kg-1.0 kg. 20L of newly mixed C35 concrete for controlling the slump of the concrete<210mm, extension<And 550mm, putting the powder quick-drying agent with the corresponding mixing amount into a container, uniformly stirring the powder quick-drying agent, uniformly mixing the powder quick-drying agent into a concrete mixer, stirring for 3min, 5min and 8min respectively, and detecting related indexes of the granulated concrete aggregate after stirring.
Example 1 is a basal control group and other examples are trial improvement groups and are cross-referenced to previous trials.
Table 1: relationship between accumulated screen underflow and standing natural curing time
Table 2: relationship between physical water content and standing natural curing time
| Serial number | Out of machine/wt% | 6h/wt％ | 8h/wt％ | 10h/wt％ |
| Example 1 | 7.7 | 6.8 | 6.3 | 5.7 |
| Example 2 | 8.2 | 7.3 | 6.8 | 6.1 |
| Example 3 | 8.6 | 7.8 | 7.2 | 6.9 |
| Example 4 | 9.0 | 8.5 | 8.3 | 7.7 |
As can be seen from tables 1 and 2, the concrete powder quick-drying agent prepared by the invention can convert fluid concrete into granulated concrete aggregate, the accumulated screen underflow amount and the physical water content can be used for representing the application effect of the powder quick-drying agent in the fluid concrete, the larger the accumulated screen underflow amount percentage is, the better the effect of the embodiment thereof is, and the higher the physical water content is, the better the embodiment thereof is.
The test methods used in the above examples were as follows, cumulative undersize analysis: 2.0kg of C35 fluid concrete treated by the concrete powder quick-drying agent of different embodiments is placed in a sieve shaker and shaken for 10 minutes to obtain the cumulative undersize proportion of the granulated concrete passing through a square hole sieve of 25mm, 16mm and 5mm when the granulated concrete is discharged from the machine, and is kept for natural curing time of 3h, 6h, 9h and the like, wherein the numerical value is accurate to 0.1 percent, and the higher the undersize proportion or the cumulative undersize proportion is, the better the embodiment is.
Physical moisture content method: 1.0kg of C35 fluid concrete treated by the concrete powder quick-drying agent of different embodiments is dried for 3 hours at the temperature of 70 ℃ to obtain the physical water content of the granulated concrete aggregate when the granulated concrete aggregate is taken out of the machine, 3 hours, 6 hours, 9 hours and other different standing natural curing times, the numerical value is accurate to 0.1 percent, the higher the physical water content of the embodiment is, the lower the bound water is proved, the better the effect of the dispersion component is exerted, the better the embodiment is, and the index can be jointly characterized by combining with the accumulated undersize analysis method.
The foregoing is only a preferred embodiment of the present invention, and many variations in the specific embodiments and applications of the invention may be made by those skilled in the art without departing from the spirit of the invention, which falls within the scope of the claims of this patent.
Claims (9)
1. A fluidized concrete powder quick-drying agent is characterized in that: comprises quick-drying components, dispersing and modifying components and stabilizing components, wherein:
the quick-drying components are at least two of aluminate, aluminum ion-containing compound and carbonate;
the dispersing and modifying components are at least two of amides, polymeric ferric salts and polymeric aluminum salts;
the stabilizing component is at least one of sodium hydroxide, sodium oxide, calcium oxide and calcium hydroxide.
2. The fluidized concrete powder quick-drying agent according to claim 1, wherein: the quick drying ingredient is preferably a combination of an aluminate and an aluminum ion containing compound.
3. The fluidized concrete powder quick-drying agent according to claim 1, wherein: the dispersing and modifying component is preferably a combination of an amide and a polymeric iron salt.
4. The fluidized concrete powder quick-drying agent according to claim 1, wherein: the stabilizing component is preferably sodium hydroxide.
5. The fluidized concrete powder quick-drying agent according to claim 1, wherein: the quick-drying component, the dispersing and modifying component and the stabilizing component are respectively added into 1 cubic meter of concrete in unit cubic mass:
two of the quick-drying components are respectively added with 1.0kg-3.0kg and 0.2kg-1.0 kg;
0.5kg-3.0kg and 0.2kg-1.0kg of two dispersing and modifying components are respectively added;
the stable component is 0kg-1.0 kg.
6. A fluidized concrete powder quick-drying agent according to any one of claims 1 to 5, wherein: the fluid concrete powder quick-drying agent is stored in a water-soluble packaging bag in a sealed mode, and each bag of fluid concrete powder quick-drying agent is suitable for 1 cubic meter of fluid concrete.
7. A method for using the fluid concrete powder quick-drying agent of claim 6, which is characterized in that: throwing the fluidized concrete powder quick-drying agent with the number corresponding to the mixing bag number into a stirring vehicle, uniformly stirring for 3-8 min to obtain dry granulated concrete aggregate, paving the granulated aggregate on the ground, naturally curing for at least 8h, and applying the partial mixing amount of the granulated aggregate to newly-mixed concrete instead of natural aggregate to achieve the purpose of secondary recycling.
8. A method for using the fluid concrete powder quick-drying agent of claim 6, which is characterized in that: throwing the fluidized concrete powder quick-drying agent with the number corresponding to the number of the mixing bags into a stirring vehicle, uniformly stirring for 3-8 min, then flatly paving the granulated aggregate on the ground, naturally standing and maintaining for at least 8h, and turning and stirring once by using a forklift for standing and naturally maintaining for about 6-8 h to prevent the granulated aggregate from caking so as to facilitate secondary utilization of the granulated aggregate.
9. A method for using the fluid concrete powder quick-drying agent of claim 6, which is characterized in that: the fluid concrete powder quick-drying agent is used in the process of recovering the residual and returned fluid concrete in a mixing plant.
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| CN113582573A (en) * | 2021-09-01 | 2021-11-02 | 多氟多新材料股份有限公司 | Accelerating agent and preparation method and application thereof |
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Application publication date: 20210226 |