High-durability quick-hardening concrete and preparation method thereof

Abstract

The invention discloses high-durability quick-hardening concrete and a preparation method thereof, and belongs to the technical field of building materials. The concrete is prepared from the following raw materials: aluminoferrite cement, vitreous calcium aluminate clinker, a coagulant nucleation agent, a nano hybrid siliceous material, a calcium-magnesium composite expanding agent, a self-healing agent, a hydration heat regulating agent, a water reducing agent, an early strength agent, a defoaming agent, a thickening agent, a retarder, an air entraining agent and aggregate. The coagulating nucleating agent is prepared from semi-hydrated gypsum, ferrous sulfate and aluminum potassium sulfate; the nano hybrid siliceous material is prepared by reacting acidic silica sol with sodium methyl silicate at 40-60 DEG C for 1-3 hours. According to the high-durability quick-hardening concrete and the preparation method thereof, the iron aluminate cement, the vitreous calcium aluminate clinker, the coagulant nucleation agent, the nano hybrid siliceous material, the calcium-magnesium composite expanding agent, the self-healing agent and the hydration heat regulating agent are utilized to form a brand-new high-durability and high-adaptability quick-hardening system. The mechanical property, the volume stability and the durability are comprehensively superior to those of the traditional quick-hardening concrete.

Description

Technical Field

[0001] This invention belongs to the field of building materials technology, specifically relating to a high-durability, fast-hardening concrete and its preparation method. Background Technology

[0002] Concrete pavements occupy an important position in my country's pavement structure due to their advantages such as high mechanical strength, strong load-bearing capacity, good durability, and good economy. However, with the extension of service time, pavements are exposed to the natural environment for a long time, suffering from sun and rain, as well as traffic impacts, resulting in varying degrees of damage. These damages mainly include minor cracks, subsidence, misalignment, exposed aggregate, pitting, spalling, and potholes, which seriously affect the functionality of concrete pavements and their structural load-bearing capacity. For municipal emergency repair projects, especially road repairs, the need for rapid completion and commissioning places high demands on rapid repair materials.

[0003] Concrete pavement repair materials should possess characteristics such as rapid hardening and early strength, low shrinkage, micro-expansion, good fluidity and cohesion, wear resistance, and stable performance in the later stages. Currently, commonly used repair materials on the market include: rapid-hardening silicate cement, aluminate cement, rapid-hardening sulfoaluminate cement, and magnesium phosphate cement. Rapid-hardening silicate cement has low early strength and large later shrinkage; aluminate cement is expensive, and its hydration products are unstable and prone to crystal transformation, leading to a decline in later strength; rapid-hardening sulfoaluminate cement has a difficult-to-control setting time, and its later strength often declines; magnesium phosphate cement has poor water resistance. None of these materials meet the requirements for rapid pavement repair.

[0004] Therefore, there is an urgent need for a high-durability, fast-hardening concrete that can quickly solidify and generate high early strength in a short time to meet the requirements of rapid repair, while also having excellent durability. Summary of the Invention

[0005] To address the shortcomings of the existing technologies, one objective of this invention is to provide a high-durability, rapid-hardening concrete. This invention utilizes aluminoferrite cement, vitreous calcium aluminate clinker, a crystallizing accelerator, nano-hybrid silica materials, a calcium-magnesium composite expansion agent, a self-healing agent, and a hydration heat regulator to form a novel, highly adaptable, and highly durable rapid-hardening system. Compared to traditional rapid-hardening concrete, the high-durability, rapid-hardening concrete of this invention, in addition to conventional mechanical properties, exhibits significantly superior volume stability, crack resistance, wear resistance, impact resistance, carbonation resistance, and freeze-thaw resistance.

[0006] To achieve the above objectives, the specific technical solution of the present invention is as follows: A high-durability, rapid-hardening concrete comprises the following raw materials in parts by weight: 30-40 parts of aluminoferrite cement, 2-5 parts of vitreous calcium aluminate clinker, 0.5-1.0 parts of a setting accelerator and nucleating agent, 3-8 parts of nano-hybrid silica material, 2-8 parts of calcium-magnesium composite expansion agent, 0.8-1.5 parts of a self-healing agent, 0.003-0.006 parts of a hydration heat regulator, 0.7-1.5 parts of a water-reducing agent, 0.2-0.6 parts of an early-strength agent, 0.2-0.5 parts of a defoamer, 0.10-0.20 parts of a thickener, 0.5-1.0 parts of a retarder, 0.01-0.02 parts of an air-entraining agent, and 32-60 parts of aggregate. The coagulation nucleating agent is composed of hemihydrate gypsum, ferrous sulfate and potassium aluminum sulfate; The nano-hybrid silicon material is prepared by reacting acidic silica sol with sodium methylsilicate at 40-60°C for 1-3 hours.

[0007] This invention uses aluminoferrite cement as the matrix for a rapid-hardening system. Compared to traditional sulfoaluminate cement, which is prone to durability problems such as pulverization and strength reduction, aluminoferrite cement has an iron oxide content >6%, increasing the iron phase content and significantly improving pulverization and strength reduction issues. However, aluminoferrite cement is primarily composed of crystalline minerals, and its hydration activity is significantly affected by temperature and humidity during actual use, leading to unstable setting time in the prepared rapid-hardening concrete and making construction control difficult. To address this problem, this invention innovatively introduces vitreous calcium aluminate clinker and a crystallizing agent to regulate performance. Vitreous calcium aluminate is amorphous, highly active, has a large specific surface area, and is less affected by temperature and humidity, thus improving the stability of the hardening time of rapid-hardening concrete. The coagulating nucleating agent used is β-type calcium sulfate hemihydrate modified with ferrous sulfate and potassium aluminum sulfate. It has a tiny lamellar structure. When this coagulating nucleating agent comes into contact with water, it reacts rapidly to form calcium sulfate dihydrate microcrystal nuclei (as a structural skeleton) and releases a large amount of heat of hydration. This provides a starting heat source for the hardening reaction of rapid-hardening concrete. It is effective in low-temperature environments and can ensure that rapid-hardening concrete can still harden rapidly at -20℃.

[0008] Nano-hybrid silica materials are hybrid materials prepared from organosilicon and inorganic silica at specific temperatures. Compared to traditional organosilicon (polysiloxane) and inorganic silica (silica fume), this material, with its nanoscale size and special hybrid structure, can significantly optimize the microstructure of concrete, improve its density and waterproof performance, and enhance its strength and durability. Calcium-magnesium composite expansive agents, through a certain proportion of compounding, can achieve an expansion rate that perfectly matches the shrinkage rate of rapid-hardening concrete, obtaining the best shrinkage compensation effect and solving the problems of mismatched expansion rates and short expansion cycles of traditional expansive agents. Self-healing agents can significantly improve the density and impermeability of rapid-hardening concrete. When cracks or defects occur in concrete due to internal or external factors, the self-healing agent can actively repair these cracks and defects, greatly improving the durability of rapid-hardening concrete and extending its service life. The core function of hydration heat regulators is to balance the heat of hydration in rapid-hardening concrete, ensuring its volume stability. Because rapid-hardening concrete reacts rapidly in a short time, it generates a large amount of heat of hydration, causing a sudden rise in temperature, which adversely affects the stability of the concrete. The addition of hydration heat regulators can effectively control the peak value of hydration heat release, ensuring uniform and stable heat release and avoiding the adverse effects of concentrated heat release. Air-entraining agents can introduce micro-bubbles into the interior of rapid-hardening concrete, improving its freeze-thaw resistance and enhancing its durability.

[0009] In summary, this invention utilizes aluminoferrite cement, vitreous calcium aluminate clinker, a setting accelerator, nano-hybrid silica materials, calcium-magnesium composite expansion agent, self-healing agent, and hydration heat regulator to form a novel highly adaptable, highly durable, and fast-hardening system. The resulting high-durability, fast-hardening concrete exhibits superior mechanical properties, volume stability, crack resistance, wear resistance, impact resistance, carbonation resistance, and freeze-thaw resistance compared to traditional fast-hardening concrete.

[0010] Preferably, the composition of the aluminoferrite cement is as follows: Al2O3 > 20%, SO3 > 15%, Fe2O3 > 6%.

[0011] Preferably, the vitreous calcium aluminate clinker is prepared by the following method: alumina and lime are calcined at 1500~1700℃ for 1~3 hours, and then ground to a specific surface area >300m². 2 / kg.

[0012] Preferably, the calcium-magnesium composite expander includes calcium sulfoaluminate expander and lightly calcined magnesium oxide expander.

[0013] Preferably, the self-healing agent is composed of disodium EDTA and sodium salt of maleic acid-acrylic acid copolymer.

[0014] Preferably, the hydration heat regulator is prepared by the following method: dissolving starch in an aqueous sulfuric acid solution, stirring and reacting, adjusting the pH of the solution to 7-8, filtering and taking the solid product, and drying to obtain the hydration heat regulator.

[0015] Preferably, the early strength agent includes at least one of lithium sulfate and lithium carbonate.

[0016] Preferably, the defoamer includes at least one of silicone defoamers, polyether defoamers, and polyether-modified silicone defoamers.

[0017] Preferably, the thickener includes at least one of hydroxymethyl cellulose ether and hydroxymethylpropyl cellulose ether.

[0018] Preferably, the retarder includes at least one of tartaric acid, sodium gluconate, and citric acid.

[0019] Preferably, the air-entraining agent includes at least one of triterpenoid saponins, tea saponins, and sodium rosinate.

[0020] Another objective of this invention is to provide a method for preparing high-durability, fast-hardening concrete, comprising the following steps: weighing each component according to the weight proportions, mixing each component evenly, and finally adding water and stirring evenly to obtain the high-durability, fast-hardening concrete.

[0021] Compared with the prior art, the advantages of the present invention are: (1) The present invention selects aluminoferrite cement, glassy calcium aluminate clinker, coagulating nucleating agent, nano-hybrid silica material, calcium-magnesium composite expansion agent, self-healing agent and hydration heat regulator to form a new fast hardening system with high adaptability and high durability. It can obtain concrete that can harden rapidly at low temperature, without powdering, with high early and late strength, good volume stability and excellent durability.

[0022] (2) The high-durability, fast-hardening concrete of the present invention has a stable and adjustable hardening speed. It can achieve an adjustable working time of 10 to 40 minutes in an ambient temperature range of -20 to 40℃. The initial slump can reach 220 mm, the compressive strength after 1 hour can reach more than 30 MPa, the compressive strength after 2 hours can reach more than 43 MPa, the strength ratio of Rc56d / Rc28 can reach more than 1.15, the bond strength with the reference concrete after 1 day can reach 2.1 MPa, and the drying shrinkage rate after 28 days is as low as 0.001%. Regarding the durability of the concrete, in the standard abrasion test, the abrasion depth can be as low as 0.6 mm, in the 28-day accelerated carbonation test, the carbonation depth is only 0.5 mm, the resistance to chloride ion penetration is only 560C after 28 days, and the frost resistance can reach F200. Detailed Implementation

[0023] The technical solution of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] The high-durability, rapid-hardening concrete of the present invention comprises the following raw materials in parts by weight: 30-40 parts of aluminoferrite cement, 2-5 parts of vitreous calcium aluminate clinker, 0.5-1.0 parts of a setting accelerator and nucleating agent, 3-8 parts of nano-hybrid silica material, 2-8 parts of calcium-magnesium composite expansion agent, 0.8-1.5 parts of a self-healing agent, 0.003-0.006 parts of a hydration heat regulator, 0.7-1.5 parts of a water-reducing agent, 0.2-0.6 parts of an early-strength agent, 0.2-0.5 parts of a defoamer, 0.10-0.20 parts of a thickener, 0.5-1.0 parts of a retarder, 0.01-0.02 parts of an air-entraining agent, and 32-60 parts of aggregate; The coagulation nucleating agent is composed of hemihydrate gypsum, ferrous sulfate and potassium aluminum sulfate; The nano-hybrid silicon material is prepared by reacting acidic silica sol with sodium methylsilicate at 40-60°C for 1-3 hours.

[0025] In some embodiments, the composition of the aluminoferrite cement is as follows: Al2O3 > 20%, SO3 > 15%, Fe2O3 > 6%.

[0026] In some embodiments, the vitreous calcium aluminate clinker is prepared by the following method: alumina and lime are calcined at 1500~1700℃ for 1~3 hours, and then ground to a specific surface area >300m². 2 / kg. For example, it can be calcined at 1600℃ for 2.5h, at 1500℃ for 2h, or at 1700℃ for 1h.

[0027] In some embodiments, the calcium-magnesium composite expander comprises a calcium sulfoaluminate expander and a light-burned magnesium oxide expander. In some specific embodiments, the calcium-magnesium composite expander is a mixture of a calcium sulfoaluminate expander and a light-burned magnesium oxide expander in a mass ratio of 45:55.

[0028] In some embodiments, the self-healing agent comprises disodium EDTA and sodium salt of maleic acid-acrylic acid copolymer.

[0029] In some embodiments, the hydration heat regulator is prepared by the following method: dissolving starch in an aqueous sulfuric acid solution, stirring and reacting, adjusting the pH of the solution to 7-8, filtering and taking the solid product, and drying to obtain the hydration heat regulator.

[0030] In some embodiments, the early-strength agent includes at least one of lithium sulfate and lithium carbonate; the defoamer includes at least one of organosilicon defoamer, polyether defoamer, and polyether-modified silicone defoamer; the thickener includes at least one of hydroxymethyl cellulose ether and hydroxymethylpropyl cellulose ether; the retarder includes at least one of tartaric acid, sodium gluconate, and citric acid; and the air-entraining agent includes at least one of triterpenoid saponins, tea saponins, and sodium rosinate. Any of the above additives selected within the above range can achieve the effects of the present invention.

[0031] The specific composition of the aluminoferrite cement is as follows: CaO content is 46.1%, Al2O3 content is 21.1%, SO3 content is 17.6%, and Fe2O3 content is 6.6%; the water-reducing agent is a powdered polycarboxylate water-reducing agent with a water reduction rate of ≥30%.

[0032] Unless otherwise specified, the high-durability, rapid-hardening concretes in the following examples and comparative examples were prepared using the following methods: S1. Weigh each component according to the parts by weight; S2. Add aluminoferrite cement, vitreous calcium aluminate clinker, accelerator crystal nucleating agent, nano-hybrid silica material, calcium-magnesium composite expansion agent, self-healing agent, hydration heat regulator, water-reducing agent, early strength agent, defoamer, thickener, retarder, air-entraining agent and aggregate to a concrete mixer and mix evenly to obtain dry mix. S3. After mixing the dry mix and water at a weight ratio of 100:(8~12), high-durability, fast-hardening concrete is obtained. Example 1

[0033] This embodiment provides a high-durability, fast-hardening concrete, comprising the following raw materials in parts by weight: 35 parts of aluminoferrite cement, 3 parts of vitreous calcium aluminate clinker, 0.7 parts of a setting accelerator, 5 parts of nano-hybrid silica material, 5 parts of calcium-magnesium composite expansion agent, 1.1 parts of a self-healing agent, 0.004 parts of a hydration heat regulator, 1.1 parts of a water-reducing agent, 0.4 parts of lithium carbonate, 0.3 parts of an organosilicon defoamer, 0.15 parts of hydroxymethyl cellulose ether, 0.7 parts of sodium gluconate, 0.015 parts of triterpenoid saponins, and 48.4 parts of continuously graded aggregate; The vitreous calcium aluminate clinker is produced by calcining industrial alumina and lime at a molar ratio of 7:3 at 1600℃ for 2.5 hours, followed by rapid cooling to below 80℃ using a grate cooler, and finally grinding in a ball mill to achieve a specific surface area >300 m². 2 / kg was obtained; The coagulation nucleating agent is composed of β-type hemihydrate gypsum, ferrous sulfate and potassium aluminum sulfate in a mass ratio of 85:7:8; The nano-hybrid silicon material was prepared by reacting acidic silica sol and sodium methylsilicate at a molar ratio of 5.8:4.2 at 50°C under normal pressure for 1.5 h, resulting in a hybrid structure of crosslinked methylsiloxane and silica sol. The calcium-magnesium composite expander is a mixture of calcium sulfoaluminate expander and R-type lightly calcined magnesium oxide expander at a mass ratio of 45:55.

[0034] The self-healing agent is composed of disodium EDTA and sodium maleate-acrylic acid copolymer at a mass ratio of 25:75, wherein the molecular weight of sodium maleate-acrylic acid copolymer is 800~1500 Da; The hydration heat regulator is modified starch, and the preparation process of the modified starch is as follows: 70 parts of deionized water and 3.6 parts of sulfuric acid are added to 30 parts of industrial starch, stirred and reacted at 60℃ for 16 hours, 4 parts of sodium carbonate are added to neutralize, the pH value is controlled at 7~8, 300 parts of water are added, stirred and allowed to settle naturally, the supernatant is discarded, the water washing is repeated 4 times, and then vacuum pressure filtered to control the water content ≤10%, thus obtaining the modified starch hydration heat regulator; The proportions of continuously graded aggregates are as follows: 2~8 mesh quartzite crushed stone: 8~16 mesh quartz sand: 16~30 mesh quartz sand: 30~50 mesh quartz sand: 50~80 mesh quartz sand: 80~120 mesh quartz sand = 3:2:1.5:1.5:1:1. Example 2

[0035] The high-durability, rapid-hardening concrete of Example 2 is basically the same as that of Example 1, except that it includes the following raw materials in parts by weight: 30 parts of aluminoferrite cement, 4 parts of vitreous calcium aluminate clinker, 0.5 parts of setting accelerator, 4 parts of nano-hybrid silica material, 3 parts of calcium-magnesium composite expansion agent, 0.8 parts of self-healing agent, 0.003 parts of hydration heat regulator, 0.7 parts of water-reducing agent, 0.2 parts of lithium carbonate, 0.2 parts of organosilicon defoamer, 0.1 parts of hydroxymethyl cellulose ether, 0.5 parts of sodium gluconate, 0.01 parts of triterpenoid saponins, and 56 parts of continuously graded aggregate. Example 3

[0036] The high-durability, rapid-hardening concrete of Example 3 is basically the same as that of Example 1, except that it includes the following raw materials in parts by weight: 40 parts of aluminoferrite cement, 5 parts of vitreous calcium aluminate clinker, 1.0 part of setting accelerator, 8 parts of nano-hybrid silica material, 8 parts of calcium-magnesium composite expansion agent, 1.5 parts of self-healing agent, 0.006 parts of hydration heat regulator, 1.5 parts of water-reducing agent, 0.6 parts of lithium carbonate, 0.5 parts of organosilicon defoamer, 0.2 parts of hydroxymethyl cellulose ether, 1.0 part of sodium gluconate, 0.02 parts of triterpenoid saponins, and 32.7 parts of continuously graded aggregate. Comparative Example 1

[0037] The high-durability, fast-hardening concrete in this comparative example is basically the same as that in Example 1, except that the aluminoferrate cement is replaced with an equal amount of sulfoaluminate cement. Comparative Example 2

[0038] The high-durability, fast-hardening concrete in this comparative example is basically the same as that in Example 1, except that the glassy calcium aluminate clinker is replaced with an equal amount of S95 mineral powder. Comparative Example 3

[0039] The high-durability, fast-hardening concrete in this comparative example is basically the same as that in Example 1, except that the setting nucleating agent is replaced with an equal amount of calcium sulfate. Comparative Example 4

[0040] The high-durability, fast-hardening concrete in this comparative example is basically the same as that in Example 1, except that the nano-hybrid silica material is replaced with silica fume and organosilicon waterproofing agent. The total weight of silica fume and organosilicon waterproofing agent is 5 parts, and the mass ratio of silica fume to organosilicon waterproofing agent is 1:1. Comparative Example 5

[0041] The high-durability, fast-hardening concrete in this comparative example is basically the same as that in Example 1, except that the calcium-magnesium composite expansion agent is replaced with an equal amount of ordinary calcium expansion agent. Comparative Example 6

[0042] The high-durability, fast-hardening concrete in this comparative example is basically the same as that in Example 1, except that the self-healing agent is omitted and the weight percentage of the continuously graded aggregate is adjusted to 49.5 parts. Comparative Example 7

[0043] The high-durability, fast-hardening concrete in this comparative example is basically the same as that in Example 1, except that the heat of hydration regulator is omitted and the weight percentage of the continuously graded aggregate is adjusted to 48.404 parts.

[0044] The high-durability, rapid-hardening concrete prepared in the examples and comparative examples was subjected to performance tests. The 1-day bond strength with the reference concrete was tested according to the method specified in Appendix G of GB50728-2021; the 28-day drying shrinkage rate was tested according to the method specified in JTG E30 T0511; the abrasion depth was tested according to the steel ball method in GB / T16925-1997 Test Method for Abrasion Resistance of Concrete and its Products; the 28-day carbonation depth was measured according to the accelerated carbonation test method in GB / T50082-2024; the chloride ion penetration resistance was measured according to the electric flux method in GB / T50082-2024; and the frost resistance was tested according to the rapid freezing method in GB / T50082-2024. The test results are shown in Table 1.

[0045] Table 1 Performance test results of high-durability rapid-hardening concrete

[0046] As shown in Table 1, the high-durability, rapid-hardening concrete prepared in Examples 1-3 of this invention has an initial slump of up to 220 mm, a compressive strength of over 30 MPa at 1 hour, a compressive strength of over 43 MPa at 2 hours, an age-strength ratio (Rc56d / Rc28) of over 1.15, a bond strength with the reference concrete at 1 day of up to 2.1 MPa, and a drying shrinkage rate as low as 0.001% at 28 days. Regarding the concrete's durability, in the standard abrasion test, the abrasion depth is as low as 0.6 mm; in the 28-day accelerated carbonation test, the carbonation depth is only 0.5 mm; in terms of chloride ion penetration resistance, the minimum electrical flux at 28 days can reach 560°C; and the frost resistance can reach F200. Therefore, it can be seen that the various performance indicators of the concrete prepared by this invention meet or even far exceed the requirements of the standard in JT / T1211.1-2018, exhibiting excellent rapid-hardening, high-strength, and high-durability properties.

[0047] Compared with Example 1, Comparative Example 1 replaced the ferroaluminate cement with an equal amount of sulfoaluminate cement. The concrete showed obvious problems of strength reduction and durability decline, specifically manifested in a strength ratio of <1, increased drying shrinkage, increased wear, increased carbonation, and decreased frost resistance.

[0048] Compared with Example 1, Comparative Example 2 replaced the glassy calcium aluminate clinker with an equal amount of S95 mineral powder, and the 1h and 2h compressive strength of the concrete and the 1d bond strength with the reference concrete were significantly reduced.

[0049] Compared with Example 1, Comparative Example 3 replaced the crystallizing agent with an equal amount of calcium sulfate, and the 1-hour and 2-hour compressive strength of the concrete decreased significantly.

[0050] Compared to Example 1, Comparative Example 4, which replaced the nano-hybrid silica material with silica fume and organosilicon waterproofing agent, showed a significant decrease in both the strength and durability of the concrete.

[0051] Compared with Example 1, Comparative Example 5 replaced the calcium-magnesium composite expansive agent with an equal amount of ordinary calcium expansive agent. The concrete's age-strength ratio and the bond strength with the reference concrete at 1 day were significantly reduced, the 28-day drying shrinkage rate was significantly increased, wear increased, carbonation increased, and frost resistance decreased.

[0052] Compared with Example 1, Comparative Example 6 omitted the self-healing agent, and the 1-hour and 2-hour compressive strength of the concrete was significantly reduced, the drying shrinkage rate increased, the wear rate increased, the carbonation rate increased, and the frost resistance was significantly reduced.

[0053] Compared with Example 1, Comparative Example 7 omitted the heat of hydration regulator, resulting in increased drying shrinkage, increased wear, increased carbonation, and significantly decreased frost resistance of the concrete.

[0054] In summary, this invention utilizes aluminoferrite cement, vitreous calcium aluminate clinker, setting accelerator, nano-hybrid silica materials, calcium-magnesium composite expansion agent, self-healing agent, and hydration heat regulator to form a novel highly adaptable, highly durable, and fast-hardening system. Under the synergistic effect of each component, the concrete simultaneously possesses excellent mechanical properties, volume stability, crack resistance, and durability.

[0055] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-durability, fast-hardening concrete, characterized by comprising: The composition comprises the following components by weight: 30-40 parts of ferrum aluminate cement, 2-5 parts of glassy calcium aluminate clinker, 0.5-1.0 parts of coagulation crystal nucleus agent, 3-8 parts of nano hybrid siliceous material, 2-8 parts of calcium-magnesium composite expansion agent, 0.8-1.5 parts of self-healing agent, 0.003-0.006 parts of hydration heat regulating agent, 0.7-1.5 parts of water reducing agent, 0.2-0.6 parts of early strength agent, 0.2-0.5 parts of defoaming agent, 0.10-0.20 parts of thickening agent, 0.5-1.0 parts of retarding agent, 0.01-0.02 parts of air entraining agent, and 32-60 parts of aggregate. The coagulation crystal nucleus agent is composed of hemihydrate gypsum, ferrous sulfate and potassium aluminum sulfate. The nano hybrid siliceous material is prepared by reacting acid silicasol with sodium methyl silicate at 40-60℃ for 1-3h.

2. The high-durability, high-early-strength concrete according to claim 1, characterized in that, The ferrum aluminate cement has the following composition: Al2O3>20%, SO3>15%, Fe2O3>6%.

3. The high-durability, high-early-strength concrete according to claim 1, wherein The glassy calcium aluminate clinker is prepared by calcining alumina and lime at 1500-1700°C for 1-3 hours and then grinding to a specific surface area > 300 m 2 / kg.

4. The high-durability, high-early-strength concrete according to claim 1, wherein The calcium-magnesium composite expansion agent comprises calcium sulphoaluminate expansion agent and light-burned magnesium oxide expansion agent.

5. The high-durability, high-early-strength concrete of claim 1, wherein The self-healing agent is composed of disodium EDTA and maleic acid-acrylic acid copolymer sodium salt.

6. The high-durability, high-early-strength concrete of claim 1, wherein The hydration heat regulating agent is prepared by the following method: dissolving starch in aqueous sulfuric acid solution, adjusting the pH value of the solution to 7-8 after stirring reaction, filtering the solid product, and drying to obtain the hydration heat regulating agent.

7. The high-durability, high-early-strength concrete of claim 1, wherein The early strength agent comprises at least one of lithium sulfate and lithium carbonate.

8. The high-durability, high-early-strength concrete of claim 1, wherein, The defoaming agent comprises at least one of organosilicon defoaming agent, polyether defoaming agent, and polyether-modified silicon defoaming agent. The thickening agent comprises at least one of hydroxymethyl cellulose ether and hydroxymethyl propyl cellulose ether.

9. The high-durability, high-early-strength concrete of claim 1, wherein, The retarding agent comprises at least one of tartaric acid, sodium gluconate and citric acid. The air entraining agent comprises at least one of triterpene saponin, tea saponin and sodium abietate.

10. The method of producing high-durability rapid-hardening concrete according to any one of claims 1 to 9, characterized by, The method comprises the following steps: weighing each component by weight, mixing each component uniformly, and finally adding water and stirring uniformly to obtain the product.

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