Digital aggregate as well as integrated pouring forming method and application thereof

Abstract

The invention relates to a digital aggregate and an integrated pouring forming method and application thereof. The digital aggregate comprises a packaging substrate and a radio frequency material embedded in the packaging substrate, the packaging substrate is prepared from the following raw materials: a carbon mineralization material, a carbonization auxiliary agent, a filling auxiliary agent, an anti-cracking auxiliary agent, a defoaming auxiliary agent and water according to the mass ratio of 1: (0.01 to 0.05): (0.01 to 0.03): (0.10 to 0.20): (0.0005 to 0.0015): (0.20 to 0.35). The carbonization auxiliary agent, the filling auxiliary agent, the anti-cracking auxiliary agent and the defoaming auxiliary agent are reasonably matched and used in proportion, the digital aggregate in any shape can be prepared through integrated pouring forming, the appearance is diversified, the mechanical property is excellent and stable, the signal transmission performance is good, and the application range in actual engineering is wide.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of intelligent building materials, and particularly relates to a digital aggregate and a method and application of integrally pouring and forming. BACKGROUND

[0002] At present, in the cement concrete prefabricated part industry, a two-dimensional code can be selected to be sprayed and printed in the prefabricated part production process to record the prefabricated part transportation state and the on-site reception. However, the two-dimensional code label is easy to be polluted, so that the label cannot be clearly identified. The radio frequency technology can also be used for identification and tracing of the concrete prefabricated part. However, due to the characteristics of the reverse reflectivity of the electronic tag, the signal transmission performance of the cement concrete prefabricated part is obviously reduced.

[0003] A team provides a scheme of making a radio frequency chip into a digital aggregate and pre-embedding the digital aggregate into the concrete for use, and provides a preparation method of digital aggregate compression molding. However, the pressure distribution may be uneven in the compression molding process, resulting in inconsistent pore distribution and density in the digital aggregate, and further affecting the mechanical property stability of the aggregate. The digital aggregate of compression molding is mostly regular in shape, and stress concentration phenomenon is easy to occur at the corner parts, which is easy to crack when bearing external force. Moreover, the appearance shape is relatively single, and the complex and diversified product shapes cannot be realized. In response to the diversified market demand, the digital aggregate of compression molding lacks advantages in shape. The design, manufacturing and maintenance cost of the mold of compression molding is high, and the process of replacing the mold is complex, the production cycle is relatively long, the production efficiency is not high, and the production flexibility is limited. In some application scenarios that require special shapes to realize specific functions, such as some complex structures that need to be embedded with each other, the regular and single shape and the poor production flexibility may not meet the demand, so that the application field of the digital aggregate in the actual engineering is limited. After changing the molding method of the digital aggregate, the signal transmission performance may be poor due to the mismatch of components.

[0004] Therefore, it is necessary to provide a scheme to prepare a digital aggregate of any shape while ensuring the signal transmission performance. SUMMARY

[0005] The application aims to overcome the above technical deficiencies, and provides a digital aggregate and a method and application of integrally pouring and forming, to solve the technical problems in the prior art that the digital aggregate needs compression molding, resulting in relatively single shape or poor signal transmission performance.

[0006] To achieve the above technical purposes, the technical scheme provided by the application is as follows: In a first aspect, the present application provides a digital aggregate, comprising an encapsulation matrix and a radio frequency material embedded in the encapsulation matrix; the raw materials of the encapsulation matrix comprise carbon mineralization material, carbonization aid, filling aid, anti-cracking aid, defoaming aid and water in a mass ratio of 1: (0.01-0.05): (0.01-0.03): (0.10-0.20): (0.0005-0.0015): (0.20-0.35).

[0007] In a second aspect, the present application provides a method for integrally pouring and forming the above-mentioned digital aggregate, comprising the following steps: S1, uniformly mixing the carbonization aid, filling aid, anti-cracking aid, defoaming aid and water in a proper proportion to form a mixed solution; uniformly mixing the carbon mineralization material and the mixed solution in a proper proportion to form a pouring slurry; S2, obtaining exhaust slurry by exhaust treatment of the pouring slurry; S3, pouring part of the exhaust slurry into a mold, placing the radio frequency material, and then continuously pouring the remaining exhaust slurry to completely coat the radio frequency material, and drying to obtain an aggregate blank; S4, obtaining the digital aggregate by carbonization curing and demolding of the aggregate blank.

[0008] In a third aspect, the present application provides an application of the above-mentioned digital aggregate in ancient building protection, road engineering monitoring, pipeline blockage positioning, identification management and traceability system of concrete prefabricated components.

[0009] Compared with the prior art, the present application has the following beneficial effects: The present application uses carbon mineralization material, carbonization aid, filling aid, anti-cracking aid, defoaming aid and radio frequency material as main raw materials, wherein the carbonization aid can accelerate the adsorption amount and diffusion speed of carbon dioxide, which is beneficial to the penetration of carbon dioxide and promotes the progress of carbonization reaction; the filling aid can fill the pores of the digital aggregate, making the structure of the digital aggregate more dense and strengthening the mechanical properties of the digital aggregate; the anti-cracking aid can enhance the adhesion of the digital aggregate, effectively absorb and disperse the stress caused by factors such as temperature change and drying shrinkage, and prevent the generation of cracks; the defoaming aid can reduce the surface tension of the liquid and the stability of the bubble film, so that the bubbles in the slurry are more likely to break when subjected to pressure or vibration. When the carbonization aid, filling aid, anti-cracking aid and defoaming aid are reasonably matched and used in a proper proportion, the integrally poured and formed digital aggregate of any shape can be prepared, and the carbonization enhancement, mechanical property strengthening and crack resistance functions can be better played through the synergistic effect, thereby improving the performance of the digital aggregate as a whole. The integrally poured and formed digital aggregate of the present application has diversified appearance, excellent and stable mechanical properties, good signal transmission performance and good production flexibility, and has a wide range of applications in practical engineering. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is a flowchart of the digital aggregate and the integrally poured and formed method of the present application; Figure 2 are photographs of the digital aggregate prepared by the present application; wherein (a) is a square shape, (b) is a spherical shape, and (c) is a leaf shape. DETAILED DESCRIPTION

[0011] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0012] In order to overcome the defect that it is difficult to prepare the digital aggregate of any shape while ensuring the signal transmission performance in the prior art, the present application provides a digital aggregate and an integrally cast forming method and application. The digital aggregate of the present application is integrally cast formed, has diversified shapes, stable mechanical properties, good production flexibility, and a wide application range in actual engineering.

[0013] In a first aspect, the present application provides a digital aggregate of any shape, which comprises an encapsulation matrix and a radio frequency material embedded in the encapsulation matrix; the raw materials of the encapsulation matrix comprise carbon mineralization material, carbonization aid, filling aid, anti-cracking aid, defoaming aid and water in a mass ratio of 1:(0.01-0.05):(0.01-0.03):(0.10-0.20):(0.0005-0.0015):(0.20-0.35).

[0014] In the present application, the main material of the raw materials of the encapsulation matrix is carbon mineralization material, which is convenient for carbon mineralization forming and has no limitation on the shape; the carbonization aid can accelerate the adsorption amount and diffusion speed of carbon dioxide, is conducive to the penetration of carbon dioxide, and promotes the carbonization reaction; the filling aid can fill the pores of the digital aggregate, makes the structure of the digital aggregate more dense, and strengthens the mechanical properties of the digital aggregate; the anti-cracking aid can enhance the adhesion of the inside of the digital aggregate, effectively absorbs and disperses the stress caused by factors such as temperature change and drying shrinkage, and prevents the generation of cracks; the defoaming aid can reduce the surface tension of the liquid, reduce the stability of the bubble film, and make the bubbles in the slurry more easily broken when subjected to pressure or vibration.

[0015] Preferably, the carbon mineralization material is one or more of tricalcium silicate, γ-dicalcium silicate, β-dicalcium silicate, monocalcium silicate, calcium hydroxide and calcium oxide.

[0016] Preferably, the carbonization aid comprises one or more of diethanolamine, triethanolamine and carbonic anhydrase; which can improve the pore structure of the digital aggregate, is conducive to the penetration of carbon dioxide, and promotes the carbonization reaction. However, when the carbonization aid is excessive, its promotion effect on the penetration of carbon dioxide and the carbonization reaction will tend to be saturated, and it is impossible to further improve the performance; on the contrary, it may lead to an imbalance in the internal structure of the matrix, affecting the mechanical properties of the aggregate.

[0017] Preferably, the filling aid includes one or more of acrylate polymers and fluorocarbon resins; the pores of the digital aggregate can be filled, so that the structure of the digital aggregate is more compact, and the mechanical properties of the digital aggregate are strengthened. However, too much filling aid will make the internal structure of the aggregate too compact, reduce its toughness and crack resistance, and make it more brittle when subjected to external force; it will also increase the viscosity of the pouring slurry and reduce its flowability, affecting the molding quality.

[0018] Preferably, the crack-resistant aid includes one or more of styrene-acrylic emulsion (preferably with a solid content of 50%±2%) and styrene-butadiene emulsion (preferably with a solid content of 50%±2%); it can enhance the internal adhesion of the digital aggregate, effectively absorb and disperse stress caused by factors such as temperature changes and drying shrinkage, and prevent cracks from occurring.

[0019] Preferably, the defoaming aid includes one or more of high-carbon alcohol fatty acid ester complex (acid value 27-31 mg / g, saponification value 24-42 mg / g, hydroxyl value 6-18 mg / g) and tributyl phosphate; it can reduce the surface tension of the liquid and the stability of the bubble film, so that the bubbles in the slurry are more likely to break when subjected to pressure or vibration.

[0020] Preferably, the radio frequency material is composed of a radio frequency chip and a radio frequency antenna, the radio frequency chip is connected to the radio frequency antenna, the radio frequency chip is used to store identification information, and the radio frequency antenna is used to send the identification information stored in the radio frequency chip to an external signal collector in the form of electromagnetic waves. Under the excitation of the external signal collector, the internal information of the radio frequency chip can be sent by the radio frequency antenna and received by the signal collector.

[0021] Preferably, the embedding depth of the radio frequency material in the packaging matrix is 4-10 mm.

[0022] Further preferably, the working frequency of the signal collector includes low frequency of 30-300 kHz, high frequency of 3-30 MHz, and ultra-high frequency of 433-950 MHz.

[0023] In a second aspect, referring to Figure 1 The present application provides a method for integrally pouring and forming the above-mentioned digital aggregate, comprising the following steps: S1, uniformly mixing the carbonization aid, the filling aid, the crack-resistant aid, the defoaming aid, and water in a certain proportion to form a mixed solution; uniformly mixing the carbon-mineralized material and the mixed solution in a certain proportion to form a pouring slurry; S2, obtaining an exhaust slurry by exhaust treatment of the pouring slurry; S3, pouring part of the exhaust slurry into a mold, placing a radio frequency material, and then continuing to pour the remaining exhaust slurry to completely coat the radio frequency material, and drying to obtain an aggregate blank; S4, carbonizing and curing the aggregate blank and demolding to obtain a digital aggregate.

[0024] Preferably, in step S1, the carbon-mineralized material is mixed with the mixed solution and stirred for 5-10 min to obtain a pouring slurry. Specifically, the stirring time includes but is not limited to 5 min, 6 min, 7 min, 8 min, 9 min, or 10 min, etc.

[0025] Preferably, in step S2, the exhaust treatment conditions include: under a negative pressure environment of -0.12 to -0.08 MPa, pressure maintaining for 10-20 min. In the present application, the container containing the pouring slurry is placed in a vacuum box, connected to a vacuum pump to create a negative pressure environment, so that the bubbles gradually rise and are discharged. Specifically, the negative pressure includes but is not limited to -0.12 MPa, -0.13 MPa, -0.14 MPa, -0.15 MPa, -0.16 MPa, -0.17 MPa, or -0.18 MPa, etc.; the pressure maintaining time includes but is not limited to 10 min, 12 min, 14 min, 15 min, 16 min, 18 min, or 20 min, etc.

[0026] It can be understood that, in order to ensure the exhaust effect, the pouring slurry in the exhaust treatment does not exceed 2 / 3 of the volume of the container.

[0027] Preferably, in step S3, the mold is a silica gel mold with a polysiloxane coating on the inner wall; the silica gel mold can be a regular shape such as a cylinder, a block, a sphere, etc., or an irregular shape such as a leaf, a shell, a pebble, a mineral, etc. Before pouring, a layer of polysiloxane is coated on the inner wall of the silica gel mold, the slurry after exhaust is poured to a position of half the height of the mold, 1 part of the radio frequency material is placed in the center of the mold, and the pouring is continued until the mold is filled.

[0028] Preferably, in step S3, the drying temperature is 40-50°C, and the drying is performed until the water-solid ratio is 0.13-0.16. Specifically, the drying temperature includes but is not limited to 40°C, 42°C, 43°C, 45°C, 46°C, 47°C, 48°C, 49°C, or 50°C, etc.; the water-solid ratio includes but is not limited to 0.13, 0.14, 0.15, or 0.16, etc.

[0029] Preferably, in step S4, the carbonization maintenance conditions include: a carbon dioxide volume concentration of 20-99.8%, a gas pressure of 0.2-0.5 MPa, and a carbonization duration of 2-36 h. Specifically, the carbon dioxide volume concentration includes but is not limited to 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 99.8%, etc.; the gas pressure includes but is not limited to 0.2 MPa, 0.25 MPa, 0.3 MPa, 0.35 MPa, 0.4 MPa, 0.45 MPa, or 0.5 MPa, etc.; and the carbonization duration includes but is not limited to 2 h, 4 h, 6 h, 8 h, 10 h, 15 h, 20 h, 24 h, 28 h, 32 h, or 36 h, etc.

[0030] In a third aspect, the present application provides an application of the above-mentioned digital aggregate in the protection of ancient buildings, the monitoring of road engineering, the positioning of pipeline blockage, the identification management and traceability system of concrete prefabricated components.

[0031] The present application will be further described in detail through specific examples.

[0032] Example 1 In this example, the carbon-mineralized material is γ-dicalcium silicate, the carbonization aid is carbonic anhydrase (molecular weight about 30 kDa) produced by Shanghai Yuan Ye Biological Technology Co., Ltd., the filling aid is fluorocarbon resin (number average molecular weight 40,000-80,000) produced by Zhonghao Chen Guang Chemical Research Institute Co., Ltd., the anti-cracking aid is butyl benzene emulsion with a solid content of 50%±2%, and the defoaming aid is tributyl phosphate.

[0033] Take 50 parts of γ-dicalcium silicate, 0.5 parts of carbonic anhydrase, 0.5 parts of fluorocarbon resin, 5 parts of butyl benzene emulsion, 0.075 parts of tributyl phosphate, and 13.5 parts of water by weight.

[0034] A method for integrally pouring and forming a digital aggregate of an arbitrary shape, comprising the following steps: S1, uniformly mixing a carbonization aid, a filling aid, an anti-cracking aid, a defoaming aid, and water in a proportion to form a mixed solution; mixing a carbon-mineralized material with the mixed solution in a proportion, and stirring for 8 min to form a pouring slurry; S2, obtaining an exhaust slurry by exhaust treatment of the pouring slurry: placing a container containing the pouring slurry in a vacuum box, connecting a vacuum pump, and creating a negative pressure environment with a gas pressure of-0.09 MPa and a pressure maintaining duration of 15 min, so that the gas bubbles gradually rise and are discharged; S3, coating a layer of polysiloxane on the inside of the cylindrical, square, spherical silica gel mold, pouring the exhaust slurry to the half height position of the mold respectively, placing 1 part of the radio frequency material in the center of the mold, and continuing to pour the exhaust slurry until the mold is filled, to obtain 3 samples of different shapes; placing the samples in an oven, drying at 45°C until the water solid ratio is 0.15, to obtain the aggregate blank body; S4, placing the aggregate blank body in a carbonization tank for carbonization curing, the carbon dioxide volume concentration is 99.8%, the gas pressure is 0.2MPa, and the carbonization time is 2h; finally demolding to obtain an integrally formed cylindrical, square, spherical digital aggregate.

[0035] Example 2 The difference from Example 1 is only that the carbonization aid is 1.5 parts of carbonic anhydrase, and the others are the same as Example 1.

[0036] Example 3 The difference from Example 1 is only that the carbonization aid is 2.5 parts of carbonic anhydrase, and the others are the same as Example 1.

[0037] Example 4 The difference from Example 1 is only that the filling aid is 1.5 parts of fluorocarbon resin, and the others are the same as Example 1.

[0038] Example 5 The difference from Example 1 is only that the filling aid is 2.5 parts of fluorocarbon resin, and the others are the same as Example 1.

[0039] Example 6 The difference from Example 1 is only that the anti-cracking aid is 7.5 parts of butyl benzene emulsion, and the others are the same as Example 1.

[0040] Example 7 The difference from Example 1 is only that the anti-cracking aid is 10 parts of butyl benzene emulsion, and the others are the same as Example 1.

[0041] Example 8 The difference from Example 1 is only that the carbonization aid is diethanolamine, and the others are the same as Example 1.

[0042] Comparative Example 1 The difference from Example 1 is only that no carbonization aid is used, and the other steps and conditions are the same as Example 1.

[0043] Comparative Example 2 The difference from Example 1 is only that no filling aid is used, and the other steps and conditions are the same as Example 1.

[0044] Comparative Example 3 The difference from Example 1 is only that no anti-cracking aid is used, and the other steps and conditions are the same as Example 1.

[0045] The signal transmission distance of the cylinder, block, and spherical digital aggregates prepared in the above examples and comparative examples in air was read, and the cylinder, block, and spherical digital aggregates were respectively embedded in concrete with a burial depth of 2 cm. The internal digital aggregates were read by a signal collector at an age of 28 days. The working frequency of the signal collector was 433-950 MHz super high frequency, and the maximum reading distance of the signal collector was recorded.

[0046] The maximum signal transmission distance of the digital aggregates prepared in the examples and comparative examples in air is shown in Table 1.

[0047] Table 1 Maximum signal transmission distance (m) of the examples and comparative examples in air

[0048] The maximum signal transmission distance of the digital aggregates prepared in the examples and comparative examples in concrete at an age of 28 days is shown in Table 2.

[0049] Table 2 Maximum signal transmission distance (m) of the examples and comparative examples in concrete at an age of 28 days

[0050] As can be seen from Comparative Examples 1-3 and Comparative Example 1, with the addition of carbonation aids, the signal transmission distance increases, because the carbonation aids increase the penetration rate of CO2, promote the occurrence of carbonation reaction, generate more calcium carbonate beneficial to signal transmission, and produce a synergistic effect with other aids, so that the respective effects are more significant.

[0051] As can be seen from Comparative Example 1, Examples 4-5, and Comparative Example 2, increasing the amount of filling aids can significantly enhance the signal transmission performance of the digital aggregates, because the addition of filling aids can fill the pores of the digital aggregates, reduce signal scattering, and increase the signal transmission distance.

[0052] As can be seen from Example 1, Examples 6-7, and Comparative Example 3, with the addition of crack-resistant aids, the signal transmission distance of the digital aggregates slightly increases, but further increasing the amount of crack-resistant aids does not significantly change the signal transmission distance of the digital aggregates.

[0053] As can be seen from Example 1 and Example 8, using carbonic anhydrase as a carbonation aid has a longer signal transmission distance than using diethanolamine, because the enhancement effect of carbonic anhydrase on carbonation is stronger than that of diethanolamine.

[0054] In summary, as shown in Table 1, the shape of the digital aggregate has little impact on its signal transmission distance in the air. The signal transmission distance of the digital aggregate is several meters, with most of the signal traveling through the air. Even if the shape changes, the ratio of the distance the signal travels through the encapsulation substrate material to the distance it travels through the air remains almost unchanged. Signal transmission is mainly affected by the encapsulation material; therefore, the signal transmission distance of digital aggregates with different shapes remains essentially the same.

[0055] Table 2 shows that the shape of the digital aggregate has little impact on its signal transmission distance in concrete. The signal transmission distance of the digital aggregate is still several meters, with most of the signal traveling through the concrete and air. Even with changes in shape, the ratio of the distance the signal travels through the encapsulation material to the distance it travels through the concrete and air remains almost unchanged. Signal transmission is mainly affected by the encapsulation material and the overall properties of the concrete. Therefore, the signal transmission distance of digital aggregates with different shapes remains essentially unchanged. Furthermore, no cracking due to storage time was observed at 28 days, which indirectly reflects the stability of the mechanical properties of the digital aggregate.

[0056] See Figure 2 The image shows a digital aggregate of different shapes obtained by the method of this invention. The shape of the aggregate is not limited and can be prepared as regular or irregular digital aggregate.

[0057] Unlike existing technologies, the carbonation aid, filler, crack-resistant agent, and defoamer of this invention, when used in a reasonable combination in a certain proportion, produce a synergistic effect, better leveraging the functions of carbonation enhancement, mechanical property strengthening, and crack resistance. Combined with the casting and carbonation curing processes, this improves the overall performance of the digital aggregate. Therefore, the digital aggregate prepared by this invention through integral casting exhibits excellent and stable mechanical properties, making it widely applicable in practical engineering. When used in fields such as ancient building protection, road engineering monitoring, and identification management and traceability systems for precast concrete components, digital aggregate better conforms to its original structure, effectively avoiding adverse effects on the mechanical properties of building structures. This invention is simple to operate, has significant effects, and offers higher production efficiency. It can be widely applied in fields such as ancient building protection, road engineering monitoring, pipeline blockage location, and identification management and traceability systems for precast concrete components, achieving diversification of digital aggregate shapes and improved mechanical property stability.

[0058] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A digital aggregate, characterized in that, It includes a packaging substrate and radio frequency materials embedded inside the packaging substrate; the raw materials of the packaging substrate include carbon mineralization materials, carbonization aids, filler aids, crack-resistant aids, defoaming aids and water in a mass ratio of 1:(0.01~0.05):(0.01~0.03):(0.10~0.20):(0.0005~0.0015):(0.20~0.35).

2. The digital aggregate according to claim 1, characterized in that, The carbon mineralization material is one or more of tricalcium silicate, dicalcium silicate γ-type, dicalcium silicate β-type, monocalcium silicate, calcium hydroxide, and calcium oxide.

3. The digital aggregate according to claim 1, characterized in that, The carbonization aid includes one or more of diethanolamine, triethanolamine, and carbonic anhydrase.

4. The digital aggregate according to claim 1, characterized in that, The filler includes one or more of acrylate polymers and fluorocarbon resins.

5. The digital aggregate according to claim 1, characterized in that, The crack-resistant additive includes one or more of styrene-acrylic emulsion and styrene-butadiene emulsion with a solid content of 45-55%.

6. The digital aggregate according to claim 1, characterized in that, The defoaming aid includes one or more of a high-carbon alcohol fatty acid ester complex and tributyl phosphate; and / or, The radio frequency material includes a connected radio frequency chip and a radio frequency antenna. The radio frequency chip is used to store identification information, and the radio frequency antenna is used to transmit the identification information stored in the radio frequency chip to an external signal acquisition device in the form of electromagnetic waves. And / or, The embedding depth of the radio frequency material in the packaging substrate is 4–10 mm.

7. The method for integral casting of digital aggregate as described in any one of claims 1-6, characterized in that, Includes the following steps: S1, mix carbonization aid, filler aid, crack-resistant aid, defoaming aid and water in proportion to form a mixed solution; mix carbon mineralization material and mixed solution in proportion to form a casting slurry; S2, the cast grout is vented to obtain vented grout after venting treatment; S3, pour a portion of the venting slurry into the mold, place the radio frequency material in it, and then continue pouring the remaining venting slurry until the radio frequency material is completely covered. Dry the material to obtain the aggregate blank. S4. After carbonization curing and demolding, the aggregate blanks are used to obtain digital aggregates.

8. The method for integral casting of digital aggregate according to claim 7, characterized in that, In step S1, the carbon mineralization material is mixed with the mixed solution and stirred for 5-10 minutes to obtain a casting slurry; and / or, In step S2, the conditions for the exhaust treatment include: maintaining a negative pressure of -0.12 to -0.08 MPa for 10 to 20 minutes; and / or, In step S3, the mold is a silicone mold with its inner wall coated with polysiloxane; and / or, The drying temperature is 40-50℃, and the water-to-solid ratio is dried to 0.13-0.

16.

9. The method for integral casting of digital aggregate according to claim 7, characterized in that, In step S4, the carbonization curing conditions include: a carbon dioxide volume concentration of 20-99.8%, an air pressure of 0.2-0.5 MPa, and a carbonization time of 2-36 h.

10. The application of digital aggregate as described in any one of claims 1-6 in the protection of ancient buildings, monitoring of road engineering, locating pipeline blockages, and identification management and traceability systems for precast concrete components.

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