Method for preparing high-strength concrete from gasified fly ash and high-strength concrete

Abstract

The invention discloses a method for preparing high-strength concrete from gasified fly ash and the high-strength concrete, the gasified fly ash is prepared into a slurry liquid state in advance, then the slurry liquid gasified fly ash is mixed with other raw materials according to a set ratio, and the high-strength concrete is prepared after curing. The gasified fly ash suspension is used as the admixture of the high-strength concrete, the performance of the high-strength concrete is fully excited by utilizing the characteristics of high activity and high early strength of the gasified fly ash, the suspension with the same mass fraction has a better effect than dry ash, the strength and compactness of the concrete are effectively improved, the workability of the concrete is improved, and the service life of the high-strength concrete is prolonged. And meanwhile, the material consumption cost is reduced, and the social benefit is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of building materials, and in particular to a method for preparing high-strength concrete by utilizing gasified fly ash and the high-strength concrete. Background Art

[0002] Gasified fly ash, also known as gasified ash, is a byproduct of coal gasification at high temperature. It has the characteristics of less impurities, high activity, and ball effect (gasified fly ash contains a large number of spherical particles of glass, with a smooth and dense surface, which plays a ball role in concrete and improves the workability of concrete). Research by technicians in this field has found that gasified fly ash has a very good effect on improving the early and late strength of concrete and the workability of concrete. It also plays a good role in reducing the total amount of adhesive, reducing energy consumption, reducing carbon emissions, and greatly saving the cost of single cubic meter of concrete. Gasified fly ash mainly plays a role in improving the workability of ordinary concrete, and does not contribute much to strength. However, the natural curing process adopted by pipe pile concrete is different from that adopted by ordinary concrete. Pipe pile concrete adopts a high-temperature curing process. In a high-temperature environment, gasified fly ash can react with alkaline substances in cement stone, which can not only fill the aggregate with dense amorphous CSH phase, significantly improve the interface transition zone between aggregate and cement stone, but also reduce the porosity in the slurry. Therefore, under high-temperature curing technology, the effect of gasified fly ash on improving the strength of concrete is very obvious.

[0003] At present, the method of using gasified fly ash to prepare concrete is to directly mix gasified fly ash with other aggregates and powders to prepare concrete. This direct mixing method requires more gasified fly ash to obtain high-strength concrete, and the raw materials are consumed more and the cost is higher. And when preparing concrete, the usual method of using gasified fly ash is to first pump the bulk gasified fly ash transported by the powder tank truck into the powder tank of the mixing plant, and then the gasified fly ash in the powder tank is transported to the powder scale by a spiral auger for weighing before entering the mixer to mix and configure the concrete. Since the top of the powder tank is generally about 30 meters above the ground, and the gasified fly ash has the characteristics of low density and suspension, in the process of raw material transportation, compared with other powders, there are problems of poor pumpability or even inability to pump; and the gasified fly ash particles are small, easy to adsorb and aggregate, which makes the spiral auger easy to clog; in addition, due to the short mixing time during concrete configuration, and the low density of powdered gasified fly ash, it is not easy to disperse. When the powdered gasified fly ash is directly involved in concrete mixing, it cannot ensure the uniform dispersion of the gasified fly ash, resulting in the inability to fully play the role of the gasified fly ash, resulting in waste of material costs, which further limits the application of gasified fly ash. At present, there are also attempts to convert it into liquid form for use research, but it has the problems of easy precipitation and uneven solute distribution during research and use, which has a serious impact on the quality stability of the pipe pile. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a method for preparing high-strength concrete using gasified fly ash, so as to solve the problem of high cost of the existing high-strength concrete preparation, and at the same time solve the problem that gasified fly ash is difficult to transport directly, and is easy to precipitate and has uneven solute distribution after liquefaction.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0006] A method for preparing high-strength concrete using gasified fly ash, wherein the gasified fly ash is pre-ground to form a slurry, and then the slurry gasified fly ash is mixed with other raw materials for preparing high-strength concrete according to a set ratio, and the high-strength concrete is prepared after curing.

[0007] Furthermore, the slurry-state gasified fly ash is a gasified fly ash suspension, in which the gasified fly ash accounts for 30-60% by weight, the emulsifier accounts for 0.1-0.5% by weight, and the rest is water.

[0008] Furthermore, the high-strength concrete is mixed with the following raw materials in proportion by mass, including: 350-420 parts of cement, 30-100 parts of gasified fly ash suspension, 20-50 parts of limestone powder, 750-850 parts of artificial sand, 1150-1300 parts of crushed stone, 7-8 parts of polycarboxylic acid water reducer, and 90-110 parts of water.

[0009] Further, the preparation steps include:

[0010] (1) dissolving gasified fly ash in water, stirring and mixing evenly, and then grinding into a gasified fly ash liquid with uniform fineness by a grinding device; then adding an emulsifier and stirring and mixing evenly to obtain a gasified fly ash suspension;

[0011] (2) adding artificial sand, crushed stone, cement and limestone powder into a container and stirring and mixing them uniformly to obtain a mixture of aggregate and powder;

[0012] (3) adding the gasified fly ash suspension, the polycarboxylate water reducer and water into another container and stirring and mixing them evenly to obtain a mixed liquid;

[0013] (4) adding the mixture of aggregate and powder obtained in step (2) and the mixed solution obtained in step (3) into a reaction device, stirring and mixing them uniformly to obtain high-strength concrete.

[0014] Furthermore, the prepared slurry-state gasified fly ash is pre-stored in a liquid storage tank, in which a liquid pump is provided. The liquid pump is connected to one end of a liquid infusion pipe, and the other end of the liquid infusion pipe passes through the lower side wall of the liquid storage tank and is connected to the application end; a stirring device is provided in the middle of the liquid storage tank.

[0015] Furthermore, the stirring device includes a stirring paddle, and the stirring paddle is driven by a motor installed on the top of the liquid storage tank.

[0016] Furthermore, an air blowing pipe is provided on the other side wall of the lower end of the liquid storage tank, one end of the air blowing pipe is connected to the liquid storage tank, and the other end is connected to the air compressor outside the liquid storage tank.

[0017] A high-strength concrete is prepared according to the method.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention uses a gasified fly ash suspension as an admixture for high-strength concrete, and utilizes the high activity, filling property, ball effect of the gasified fly ash and the high dispersibility and uniformity of the gasified fly ash suspension to promote a more complete hydration reaction, effectively improve the strength and density of the concrete, and improve the workability of the high-strength concrete, thereby improving the quality of the high-strength concrete. Compared with directly using a gasified fly ash as an admixture, the amount of a gasified fly ash per cubic meter of high-strength concrete produced is reduced by about half. Although the reduced half needs to be replaced by additional aggregate (artificial sand and crushed stone are collectively referred to as aggregate), the cost of the gasified fly ash is about 3-4 times that of the aggregate, and reducing the amount of the gasified fly ash used can significantly reduce the cost. At the same time, because the hydration reaction of the powder (cement, gasified fly ash and limestone powder are collectively referred to as powder) becomes more complete, a certain amount of limestone powder can be added to replace part of the cement in equal amounts, further reducing the amount of cement. The price of limestone powder is less than half of cement, which can significantly reduce the cost. At the same time, the carbon emissions per unit mass of limestone powder is less than 1 / 10 of that of cement, which accounts for more than 80% of the total carbon emissions of concrete, and can effectively reduce carbon emissions. Therefore, the use of gasified fly ash suspension as an admixture for high-strength concrete greatly saves the preparation cost of high-strength concrete, reducing the cost of concrete by more than 20 yuan per cubic meter, and carbon emissions by more than 14%.

[0020] 2. The present invention grinds the liquefied gasified fly ash into a gasified fly ash liquid with uniform fineness, and then mixes it with an emulsifier to obtain a gasified fly ash suspension. Compared with directly adding powdered gasified fly ash to prepare concrete, the present invention adds it in the form of slurry, which greatly increases the dispersibility of the gasified fly ash, and can be quickly and evenly stirred during the concrete mixing and configuration process to give full play to its role. And because the slurry is obtained, it can be directly put into the liquid storage tank in a ton bag when transporting, and there is no problem of pumping difficulty.

[0021] 3. The liquid storage device of the gasified fly ash suspension of the present invention can directly pump the gasified fly ash suspension to the application end for application through the liquid pump provided in the liquid storage tank, and the stirring device provided in the liquid storage tank can prevent the slurry from settling and stratifying, thus solving the problem that the gasified fly ash is difficult to transport directly, and is easy to precipitate and has uneven solute distribution after liquefaction. Moreover, the liquid delivery pipeline only needs to be flushed once a day to prevent blockage, which is simple to operate and convenient for popularization and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the storage device of the gasified fly ash suspension of the present invention;

[0023] In the figure, there are a liquid storage tank 1, a liquid pump 2, a liquid infusion pipeline 3, a stirring paddle 4, a motor 5, an air blowing pipe 6, and an air compressor 7. DETAILED DESCRIPTION

[0024] The specific implementation modes of the present invention are further described in detail below in conjunction with specific examples.

[0025] The numerical ranges in the present invention are understood to also specifically disclose each intermediate value between the upper and lower limits of the range. Each smaller range between any intermediate value in the stated value or stated range and any other stated value or intermediate value in the stated range is also included in the present invention. The upper and lower limits of these smaller ranges may be independently included or excluded in the range.

[0026] Unless otherwise stated, all technical and scientific terms used herein have the same meanings as those of ordinary skill in the art described in the present invention are generally understood. Although the present invention only describes preferred methods and materials, any methods and materials similar or equivalent to those described herein may also be used in the implementation or testing of the present invention. All documents mentioned in this specification are incorporated by reference to disclose and describe the methods and / or materials related to the documents. In the event of conflict with any incorporated document, the content of this specification shall prevail. Regarding "comprising", "including", "having", "containing", etc. used herein, they are all open terms, which means including but not limited to.

[0027] Unless otherwise specified, the experimental methods used in the present invention are all conventional methods.

[0028] Unless otherwise specified, the materials, reagents, etc. used in the present invention can be purchased or synthesized by known methods.

[0029] The quantitative tests in the present invention were all repeated three times, and the results were averaged.

[0030] Example 1

[0031] This embodiment provides a method for preparing high-strength concrete using gasified fly ash, the raw materials include 370kg of P.O42.5R cement, 40kg of gasified fly ash suspension, 40kg of limestone powder, 805kg of artificial sand, 1240kg of crushed stone, 7.2kg of polycarboxylate water reducer, and 98kg of water. The gasified fly ash suspension includes 20kg of gasified fly ash, 19.8kg of water, and 0.2kg of emulsifier.

[0032] The preparation steps of high-strength concrete using gasified fly ash include:

[0033] (1) Preparing a gasified fly ash suspension: dissolving the gasified fly ash in water, stirring and mixing evenly, and grinding it into a gasified fly ash liquid with uniform fineness using a grinding device; then adding an emulsifier and stirring and mixing evenly to obtain a gasified fly ash suspension; the mass ratio of the gasified fly ash, water and emulsifier is 50:49.5:0.5; the emulsifier has a dispersing effect and can make the slurry more uniform.

[0034] (2) Preparation of high-strength concrete: Weigh all materials in advance according to the mix ratio; add artificial sand and crushed stone into the test mixer, then add PO 42.5R cement and limestone powder, and stir for 20 seconds; add the gasified fly ash suspension, water and polycarboxylate water reducer into the transfer cylinder and mix them. After the test mixer completes the stirring for 20 seconds, add the mixed liquid in the transfer cylinder into the test mixer and stir together with the aggregate and powder for 120 seconds to obtain high-strength concrete.

[0035] Example 2

[0036] This embodiment provides a method for preparing high-strength concrete using gasified fly ash, the raw materials include 360kg of P.O42.5R cement, 50kg of gasified fly ash suspension, 45kg of limestone powder, 805kg of artificial sand, 1240kg of crushed stone, 7.2kg of polycarboxylate water reducer, and 93kg of water. The gasified fly ash suspension includes 25kg of gasified fly ash, 24.75kg of water, and 0.25kg of emulsifier.

[0037] The preparation steps of high-strength concrete using gasified fly ash include:

[0038] (1) Preparing a gasified fly ash suspension: dissolving the gasified fly ash in water, stirring and mixing evenly, and grinding it into a gasified fly ash liquid with uniform fineness using a grinding device; then adding an emulsifier and stirring and mixing evenly to obtain a gasified fly ash suspension; the mass ratio of the gasified fly ash, water and emulsifier is 50:49.5:0.5; the emulsifier has a dispersing effect and can make the slurry more uniform.

[0039] (2) Preparation of high-strength concrete: Weigh all materials in advance according to the mix ratio; add artificial sand and crushed stone into the test mixer, then add PO 42.5R cement and limestone powder, and stir for 20 seconds; add the gasified fly ash suspension, water and polycarboxylate water reducer into the transfer cylinder and mix them. After the test mixer completes the stirring for 20 seconds, add the mixed liquid in the transfer cylinder into the test mixer and stir together with the aggregate and powder for 120 seconds to obtain high-strength concrete.

[0040] Example 3

[0041] This embodiment provides a method for preparing high-strength concrete using gasified fly ash, the raw materials include 350kg of P.O42.5R cement, 60kg of gasified fly ash suspension, 50kg of limestone powder, 805kg of artificial sand, 1240kg of crushed stone, 7.2kg of polycarboxylate water reducer, and 88kg of water. The gasified fly ash suspension includes 30kg of gasified fly ash, 29.7kg of water, and 0.3kg of emulsifier.

[0042] The preparation steps of high-strength concrete using gasified fly ash include:

[0043] (1) Preparing a gasified fly ash suspension: dissolving the gasified fly ash in water, stirring and mixing evenly, and grinding it into a gasified fly ash liquid with uniform fineness using a grinding device; then adding an emulsifier and stirring and mixing evenly to obtain a gasified fly ash suspension; the mass ratio of the gasified fly ash, water and emulsifier is 50:49.5:0.5; the emulsifier has a dispersing effect and can make the slurry more uniform.

[0044] (2) Preparation of high-strength concrete: Weigh all materials in advance according to the mix ratio; add artificial sand and crushed stone into the test mixer, then add PO 42.5R cement and limestone powder, and stir for 20 seconds; add the gasified fly ash suspension, water and polycarboxylate water reducer into the transfer cylinder and mix them. After the test mixer completes the stirring for 20 seconds, add the mixed liquid in the transfer cylinder into the test mixer and stir together with the aggregate and powder for 120 seconds to obtain high-strength concrete.

[0045] Comparative Example 1

[0046] The comparative example provides a method for preparing high-strength concrete using gasified fly ash, wherein the raw materials include 440 kg of P.O42.5R cement, 40 kg of gasified fly ash, 756 kg of artificial sand, 1220 kg of crushed stone, 8.0 kg of polycarboxylic acid water reducer, and 136 kg of water.

[0047] The preparation steps of high-strength concrete using gasified fly ash include: weighing various materials in advance according to the mix ratio; adding artificial sand and crushed stone into the test mixer, and then adding PO 42.5R cement and gasified fly ash, and stirring for 20 seconds; adding water and polycarboxylic acid water reducer into the transfer measuring cylinder for mixing, and after the test mixer completes the stirring for 20 seconds, adding the mixed liquid in the transfer measuring cylinder into the test mixer, and stirring together with aggregate and powder for 120 seconds to complete the preparation.

[0048] Comparative Example 2

[0049] The comparative example provides a method for preparing high-strength concrete using gasified fly ash, wherein the raw materials include 400 kg of P.O42.5R cement, 40 kg of gasified fly ash, 40 kg of limestone powder, 756 kg of artificial sand, 1220 kg of crushed stone, 8.0 kg of polycarboxylic acid water reducer, and 136 kg of water.

[0050] The preparation steps of high-strength concrete using gasified fly ash include: weighing various materials in advance according to the mix ratio; adding artificial sand and crushed stone into the test mixer, and then adding PO 42.5R cement, gasified fly ash and limestone powder, and stirring for 20 seconds; adding water and polycarboxylic acid water reducer into the transfer measuring cylinder for mixing, and after the test mixer completes the stirring for 20 seconds, adding the mixed liquid in the transfer measuring cylinder into the test mixer, and stirring together with the aggregate and powder for 120 seconds to complete the preparation.

[0051] Comparative Example 3

[0052] This embodiment provides a method for preparing high-strength concrete using gasified fly ash, the raw materials include 440kg of P.O42.5R cement, 40kg of gasified fly ash suspension, 787kg of artificial sand, 1220kg of crushed stone, 7.4kg of polycarboxylate water reducer, and 106kg of water. The gasified fly ash suspension includes 20kg of gasified fly ash, 19.8kg of water, and 0.2kg of emulsifier.

[0053] The preparation steps of high-strength concrete using gasified fly ash include:

[0054] (1) Preparing a gasified fly ash suspension: dissolving the gasified fly ash in water, stirring and mixing evenly, and grinding it into a gasified fly ash liquid with uniform fineness using a grinding device; then adding an emulsifier and stirring and mixing evenly to obtain a gasified fly ash suspension; the mass ratio of the gasified fly ash, water and emulsifier is 50:49.5:0.5; the emulsifier has a dispersing effect and can make the slurry more uniform.

[0055] (2) Preparation of high-strength concrete: Weigh all materials in advance according to the mix ratio; add artificial sand and crushed stone into the test mixer, then add PO 42.5R cement and stir for 20 seconds; add the gasified fly ash suspension, water and polycarboxylate water reducer into the transfer cylinder and mix them. After the test mixer completes the stirring for 20 seconds, add the mixed liquid in the transfer cylinder into the test mixer and stir together with the aggregate and powder for 120 seconds to obtain high-strength concrete.

[0056] Comparative Example 4

[0057] This embodiment provides a method for preparing high-strength concrete using gasified fly ash, the raw materials include 400kg of P.O42.5R cement, 40kg of gasified fly ash suspension, 40kg of limestone powder, 787kg of artificial sand, 1220kg of crushed stone, 7.4kg of polycarboxylate water reducer, and 106kg of water. The gasified fly ash suspension includes 20kg of gasified fly ash, 19.8kg of water, and 0.2kg of emulsifier.

[0058] The preparation steps of high-strength concrete using gasified fly ash include:

[0059] (1) Preparing a gasified fly ash suspension: dissolving the gasified fly ash in water, stirring and mixing evenly, and grinding it into a gasified fly ash liquid with uniform fineness using a grinding device; then adding an emulsifier and stirring and mixing evenly to obtain a gasified fly ash suspension; the mass ratio of the gasified fly ash, water and emulsifier is 50:49.5:0.5; the emulsifier has a dispersing effect and can make the slurry more uniform.

[0060] (2) Preparation of high-strength concrete: Weigh all materials in advance according to the mix ratio; add artificial sand and crushed stone into the test mixer, then add PO 42.5R cement and limestone powder, and stir for 20 seconds; add the gasified fly ash suspension, water and polycarboxylate water reducer into the transfer cylinder and mix them. After the test mixer completes the stirring for 20 seconds, add the mixed liquid in the transfer cylinder into the test mixer and stir together with the aggregate and powder for 120 seconds to obtain high-strength concrete.

[0061] The raw material proportions of the high-strength concrete prepared in the embodiments of the present invention and the comparative examples are shown in Table 1.

[0062] Table 1: Raw material ratios of high-strength concrete prepared in the embodiments of the present invention and the comparative examples

[0063]

[0064] The unit price of each raw material and the carbon emission factor are shown in Table 2.

[0065] Table 2 Unit price of raw materials and carbon emission factors

[0066] Material Name Unit price (yuan / t) <![CDATA[Carbon emission factor (kgCO2e / kg)]]> cement 400 0.61953 Gasified fly ash 320 0.0345 Limestone powder 150 0.0345 Artificial sand 100 0.00776 gravel 100 0.00776 Polycarboxylate water reducer 2000 0.601 Slurry preparation 20 /

[0067] The performance comparison table of the high-strength concrete prepared in the embodiment of the present invention and the comparative example is shown in Table 3.

[0068] Table 3 Comparison of properties of high-strength concrete obtained in the embodiments of the present invention and the comparative examples

[0069] Example Compressive strength(MPa) Cost of concrete preparation per cubic meter (yuan) <![CDATA[Carbon emissions (kgCO2e)]]> Example 1 92.6 380.1 251.5 Example 2 90.9 378.7 245.6 Example 3 90.1 377.2 239.8 Comparative Example 1 89.2 402.4 294.1 Comparative Example 2 82.0 392.4 270.7 Comparative Example 3 98.4 398.7 293.3 Comparative Example 4 96.5 388.7 269.9

[0070] Note: The concrete prepared in the present invention is for high-strength prestressed concrete pipe piles, and the strength should reach at least 87MPa according to the specification.

[0071] From Table 3 we can conclude that:

[0072] 1. By comparing "Comparative Example 1" and "Comparative Example 3", it can be seen that when the slurry is used in equal amounts to replace the powder-type gasified fly ash, the strength is significantly increased.

[0073] 2. Comparison of "Comparative Example 1", "Comparative Example 2" and "Comparative Example 4" shows that it is feasible to replace a certain amount of cement with limestone powder in equal proportion only when using slurry, otherwise the strength will be seriously affected. The cost is significantly reduced after using limestone powder.

[0074] 3. The rich strength of "Comparative Example 4" is relatively high, so the amount of cement is reduced on the basis of "Comparative Example 4" to form "Example 1", the strength still meets the requirements, and the cost and carbon emissions are further reduced.

[0075] 4. Comparing "Example 1", "Example 2" and "Example 3", the proportion of gasification fly ash slurry and limestone powder is slightly adjusted to further reduce the cost.

[0076] The present invention also provides a liquid storage device for the gasified fly ash suspension, such as Figure 1 As shown, it includes a liquid storage tank 1, a liquid pump 2 is arranged on a side wall of the lower end of the liquid storage tank 1, the liquid pump 2 is connected to one end of an infusion pipe 3, and the other end of the infusion pipe 3 passes through the side wall of the lower end of the liquid storage tank 1 and is connected to the application end; a stirring device is arranged in the middle of the liquid storage tank 1.

[0077] In specific implementation, the stirring device includes a stirring paddle 4, and the stirring paddle 4 is driven by a motor 5 installed on the top of the liquid storage tank 1. Such a structure is simple and easy to implement.

[0078] In specific implementation, an air blowing pipe 6 is provided on the other side wall of the lower end of the liquid storage tank 1, one end of the air blowing pipe 6 is connected to the liquid storage tank 1, and the other end is connected to the air compressor 7 outside the liquid storage tank 1. The air blowing pipe 6 is provided at the bottom of the liquid storage tank 1 to disturb the slurry at the bottom, so that the slurry at the bottom that is not stirred by the stirring device can also move, thereby avoiding precipitation or stratification of the slurry at the bottom.

[0079] In a specific implementation, the application end is a weighing device, so that the gasified fly ash suspension can be weighed and used directly.

[0080] Working principle: When storing gasified fly ash suspension, put the prepared gasified fly ash suspension into the liquid storage tank, turn on the motor for stirring, so as to prevent the gasified fly ash suspension from settling and stratifying. At the same time, blow air into the liquid storage tank through the air pipe at the bottom of the liquid storage tank, which can further prevent the gasified fly ash suspension from settling at the bottom. When the gasified fly ash suspension is needed, the liquid in the liquid storage tank is pumped out by the liquid pump, and flows into the application end (such as the weighing system of the mixing building) through the liquid infusion pipeline for application.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the technical solution. Those skilled in the art should understand that those modifications or equivalent substitutions of the technical solution of the present invention that do not depart from the purpose and scope of the technical solution should be included in the scope of the claims of the present invention.

Claims

1. A method for preparing high-strength concrete using gasified fly ash, characterized in that: The gasified fly ash is pre-ground to form a slurry state, and then the slurry-state gasified fly ash is mixed with other raw materials for preparing high-strength concrete according to a set ratio, and the high-strength concrete is prepared after curing.

2. The method for preparing high-strength concrete using gasified fly ash according to claim 1, characterized in that: The slurry-state gasified fly ash is a gasified fly ash suspension, in which the gasified fly ash accounts for 30-60% by weight, the emulsifier accounts for 0.1-0.5% by weight, and the rest is water.

3. The method for preparing high-strength concrete using gasified fly ash according to claim 2, characterized in that: The high-strength concrete is mixed with the following raw materials in proportion by mass, including: 350-420 parts of cement, 30-100 parts of gasified fly ash suspension, 20-50 parts of limestone powder, 750-850 parts of artificial sand, 1150-1300 parts of crushed stone, 7-8 parts of polycarboxylic acid water reducer, and 90-110 parts of water.

4. The method for preparing high-strength concrete using gasified fly ash according to claim 3, characterized in that: The preparation steps include: (1) dissolving gasified fly ash in water, stirring and mixing evenly, and then grinding into a gasified fly ash liquid with uniform fineness by a grinding device; then adding an emulsifier and stirring and mixing evenly to obtain a gasified fly ash suspension; (2) adding artificial sand, crushed stone, cement and limestone powder into a container and stirring and mixing them uniformly to obtain a mixture of aggregate and powder; (3) adding the gasified fly ash suspension, the polycarboxylate water reducer and water into another container and stirring and mixing them evenly to obtain a mixed liquid; (4) adding the mixture of aggregate and powder obtained in step (2) and the mixed solution obtained in step (3) into a reaction device, stirring and mixing them uniformly to obtain high-strength concrete.

5. The method for preparing high-strength concrete using gasified fly ash according to claim 1, characterized in that: The prepared slurry-state gasified fly ash is pre-stored in a liquid storage tank, in which a liquid pump is provided. The liquid pump is connected to one end of a liquid infusion pipeline, and the other end of the liquid infusion pipeline passes through the lower side wall of the liquid storage tank and is connected to the application end; a stirring device is provided in the middle of the liquid storage tank.

6. The method for preparing high-strength concrete using gasified fly ash according to claim 5, characterized in that: The stirring device comprises a stirring paddle, and the stirring paddle is driven by a motor installed on the top of the liquid storage tank.

7. The method for preparing high-strength concrete using gasified fly ash according to claim 5, characterized in that: An air blowing pipe is arranged on the other side wall of the lower end of the liquid storage tank, one end of the air blowing pipe is connected with the liquid storage tank, and the other end is connected with the air compressor outside the liquid storage tank.

8. A high-strength concrete, characterized in that: Prepared by the method according to any one of claims 1 to 7.

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