Formula and preparation process of active siliceous self-repairing material

Abstract

The invention relates to a formula and a preparation process of an active siliceous self-repairing material in the technical field of concrete repairing, the formula comprises a siliceous base material, an active group package, a temperature-inhibiting group package, a reinforcing group package, a coagulation-inhibiting group package, an anti-cracking group package, a mud-inhibiting group package, a hydrophobic group package, a coagulation-accelerating group package and an assistant package, and the preparation process comprises the following steps: S1, preparing an active silicon self-repairing material; preparing an active group package; s2, preparing an anti-crack group packet; s3, preparing a temperature-inhibiting group packet; s4, preparing a hydrophobic group package; s5, preparing an enhanced group packet; s6, preparing a coagulation accelerating group bag; s7, preparing a coagulation inhibition group packet; s8, preparing a mud inhibition group packet; according to the concrete self-repairing agent, self-repairing of concrete structure microcracks is achieved by doping the concrete self-repairing agent in concrete or mortar, the anti-cracking and repairing purposes are achieved by enhancing the immunity of the concrete, and compared with a traditional mode, the concrete self-repairing agent has the advantages that the repairing capacity of the concrete is enhanced, the repairing effect of the concrete is improved, and the service life of the concrete is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete repair, and in particular to a formula and a preparation process of an active siliceous self-repairing material. Background Art

[0002] Concrete pouring refers to the process of pouring concrete into a mold until it is plasticized. In civil engineering projects, concrete and other materials are poured into a mold to form a predetermined shape. When pouring concrete, the free height of the concrete should not exceed 2m. When it exceeds 3m, corresponding measures should be taken.

[0003] Active siliceous self-healing materials imitate the healing function of biological tissue damage, forming an intelligent self-healing system inside the concrete. When cracks or damage appear in the concrete material, the repair reaction is automatically triggered under the action of water, making it densely healed.

[0004] Concrete cracks have always been considered the "cancer" of concrete. With the decline in the quality of sand and gravel in recent years, concrete cracks have become more and more common and serious, which has seriously threatened the life of buildings and has become the biggest shortcoming of the construction industry. The traditional method of dealing with cracks is to use grouting materials such as epoxy and polyurethane to repair cracks. However, the durability of repair materials is limited, and they often fall into a maintenance cycle, thereby increasing the cost of maintenance. Cracks are prone to occur for various reasons after concrete pouring. As the cracks develop, the performance of concrete decreases and its service life is shortened. New materials are urgently needed to change the status quo. In response to the above-mentioned problems, the present invention provides an internally added active siliceous concrete self-repairing material. The active siliceous self-repairing material and the self-repairing concrete can inhibit the cracking of concrete caused by temperature shrinkage, and even after cracking, they can self-repair cracks within 0.6mm, thereby improving the waterproof and anti-seepage properties of concrete as well as the seawater erosion performance and durability of concrete, thereby extending the service life of concrete. Summary of the Invention

[0005] The purpose of the present invention is to solve the above defects and provide a formulation and preparation process of an active siliceous self-healing material.

[0006] The object of the present invention is achieved in the following ways:

[0007] The active silicon self-healing material is formulated according to the following mass fractions:

[0008] 50-85 parts of siliceous base material, 10-30 parts of active group package, 3-8 parts of anti-cracking group package, 3-5 parts of temperature-inhibiting group package, 0.5-2 parts of hydrophobic group package, 5-10 parts of reinforcing group package, 1-6 parts of accelerating group package, 1-6 parts of inhibiting group package, 1-8 parts of mud-inhibiting group package and 3-10 parts of auxiliary agent package;

[0009] A preparation process for an active siliceous self-repairing material, the preparation process is used to prepare an active siliceous self-repairing material, and the preparation process comprises the following steps:

[0010] S1, preparing an active ingredient group package; mixing 1 part of the active substance with 3 parts of the nano-scale open-porous material, and thoroughly mixing and stirring in a stirrer at 1000-200 rpm for 15 minutes to form a sustained-release active ingredient group package;

[0011] S2, preparing an anti-cracking group bag; adding the composite expansion material, the anti-cracking fiber and the lubricant to the blender in sequence, and mixing them uniformly by high-speed stirring with a blender to obtain an anti-cracking group bag;

[0012] S3, preparing a temperature-inhibiting group package; grouping the temperature-inhibiting components, fully grinding the temperature-inhibiting components to 600 mesh, and then adding them to a blender and mixing them uniformly by high-speed stirring with a blender to obtain a temperature-inhibiting group package;

[0013] S4, preparing a hydrophobic group package; grouping the hydrophobic groups, fully grinding the hydrophobic groups to 400 mesh, adding them to a blender and mixing them uniformly by high-speed stirring with a blender to obtain a hydrophobic group package;

[0014] S5, preparing a reinforced group bag; grouping the reinforcing ingredients, fully grinding the reinforcing ingredients to 400 mesh, adding them to a blender and mixing them evenly with a blender at high speed to obtain a reinforced group bag;

[0015] S6, preparing a coagulant group package; grouping the coagulant components, fully grinding the coagulant components to 600 mesh, adding them to a blender and mixing them uniformly by high-speed stirring with a blender to obtain a coagulant group package;

[0016] S7, preparing a coagulation-inhibiting group package; grouping the coagulation-inhibiting components, fully grinding the coagulation-inhibiting components to 600 mesh, adding them to a blender and mixing them uniformly by high-speed stirring with a blender to obtain a coagulation-inhibiting group package;

[0017] S8, preparing a mud-inhibiting group package; grouping the mud-inhibiting components, fully grinding the mud-inhibiting components to 600 mesh, adding them to a blender and mixing them uniformly by high-speed stirring with a blender to obtain a mud-inhibiting group package;

[0018] S9, mixing and stirring; add the siliceous base material, active group package, temperature-inhibiting group package, reinforcing group package, anti-setting group package, anti-cracking group package and mud-inhibiting group package into the stirrer in turn and mix thoroughly for 15 minutes; then add the hydrophobic group package and stir evenly, then add the accelerating group package and stir evenly, finally add the auxiliary agent package and a small amount of graphene and stir evenly, and put the evenly stirred materials into the silo for packaging.

[0019] Furthermore, in S1, the active substance is one or a combination of two or more of active silicon dioxide, active aluminum oxide, active lignin and active magnesium oxide.

[0020] Furthermore, in said S2, the anti-cracking group package comprises a composite expansion material and anti-cracking fibers, the composite expansion material is magnesium oxide, and the anti-cracking fibers are nano-scale anti-cracking fibers.

[0021] Furthermore, in said S4, the hydrophobic group package comprises any one or a combination of two or more of potassium methyl silicate, sodium methyl silicate, and calcium stearate.

[0022] Furthermore, in said S6, the accelerating coagulant group package comprises a combination of two or more of lithium carbonate, calcium oxide, sodium silicate, sodium oxide, and potassium oxide.

[0023] The beneficial effects of the present invention are as follows: the present invention realizes self-repair of micro-cracks in concrete structure by adding it into concrete or mortar, and achieves the purpose of crack resistance and repair by enhancing the immunity of concrete itself. Compared with traditional methods, the present invention adds siliceous basic materials, active group packages, temperature-inhibiting group packages, reinforcing group packages, setting-inhibiting group packages, anti-cracking group packages, mud-inhibiting group packages, hydrophobic group packages, accelerating group packages and additive packages to enhance the self-repairing ability of concrete, thereby improving the self-repairing effect and service life of concrete.

[0024] The active siliceous self-healing material of the present invention is based on siliceous materials and is composed of an active group package, a temperature-suppressing group package, a hydrophobic group package, a reinforcing group package, a setting-promoting group package, a setting-inhibiting group package, a crack-resistant group package, a mud-inhibiting group package, and an additive package. When added to concrete or mortar at a dosage of 0.5% to 5% of the cement content, the active siliceous self-healing material can effectively inhibit the formation of concrete cracks, enhance concrete impermeability and strength, reduce the impact of unstable aggregate quality on concrete, and impart the concrete with the ability to self-repair microcracks.

[0025] The present invention can realize self-waterproofing of concrete structures, reduce the occurrence of concrete cracks, and even if cracks or fissures occur, they can automatically heal under the action of water, thereby achieving a long-lasting waterproofing effect of the concrete body or mortar body itself, greatly improving the durability of the structure, and improving economic and social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of a method flow in an embodiment of the present invention;

[0027] Figure 2 Reference diagram of the cracks measured on site in Example 2 of the present invention

[0028] Figure 3 This is a diagram showing the actual effect of crack self-repair measured on site according to the second embodiment of the present invention;

[0029] Figure 4 Another reference diagram of the cracks measured on site in Example 2 of the present invention

[0030] Figure 5 for Figure 4 A partial enlarged schematic diagram of the cracks measured on site;

[0031] Figure 6 This is another actual effect diagram of crack self-repair measured on site according to the second embodiment of the present invention. DETAILED DESCRIPTION

[0032] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0033] Example 1:

[0034] Reference Figure 1 The active silicon self-healing material is specifically formulated according to the following mass fractions:

[0035] 50-85 parts of siliceous base material, 10-30 parts of active group package, 3-8 parts of anti-cracking group package, 3-5 parts of temperature-inhibiting group package, 0.5-2 parts of hydrophobic group package, 5-10 parts of reinforcing group package, 1-6 parts of accelerating group package, 1-6 parts of inhibiting group package, 1-8 parts of mud-inhibiting group package and 3-10 parts of auxiliary agent package;

[0036] A preparation process for an active siliceous self-repairing material, the preparation process is used to prepare an active siliceous self-repairing material, and the preparation process comprises the following steps:

[0037] S1, preparing an active group package; mixing 1 part of the active substance with 3 parts of the nano-scale open-porous material, adding a small amount of graphene, and thoroughly mixing and stirring in a magnetic stirrer at 1000 rpm for 15 minutes to form a sustained-release active group package, wherein the active substance is one or a combination of two or more of activated silicon dioxide, activated aluminum oxide, activated lignin, and activated magnesium oxide;

[0038] S2, preparing an anti-cracking group package; adding a composite expansion material, an anti-cracking fiber, and a lubricant to a blender in sequence, and mixing them uniformly by high-speed stirring with a blender to obtain an anti-cracking group package, wherein the anti-cracking group package comprises a composite expansion material and an anti-cracking fiber, wherein the composite expansion material is magnesium oxide and the anti-cracking fiber is a nano-scale anti-cracking fiber;

[0039] S3, preparing a temperature-inhibiting group package; grouping the temperature-inhibiting components, fully grinding the temperature-inhibiting components to 600 mesh, and then adding them to a blender and mixing them uniformly by high-speed stirring with a blender to obtain a temperature-inhibiting group package;

[0040] S4, preparing a hydrophobic group package; grouping the hydrophobic groups, grinding the hydrophobic groups to 400 mesh, adding the hydrophobic groups to a blender, and mixing them uniformly by high-speed stirring with a blender to obtain a hydrophobic group package, wherein the hydrophobic group package comprises any one or a combination of two or more of potassium methyl silicate, sodium methyl silicate, and calcium stearate;

[0041] S5, preparing a reinforced group bag; grouping the reinforcing ingredients, fully grinding the reinforcing ingredients to 400 mesh, adding them to a blender and mixing them evenly with a blender at high speed to obtain a reinforced group bag;

[0042] S6, preparing a coagulant group package; grouping the coagulant components, fully grinding the coagulant components to 600 mesh, adding them to a blender and mixing them uniformly by high-speed stirring with a blender to obtain a coagulant group package, wherein the coagulant group package comprises a combination of two or more of lithium carbonate, calcium oxide, sodium silicate, sodium oxide, and potassium oxide;

[0043] S7, preparing a coagulation-inhibiting group package; grouping the coagulation-inhibiting components, fully grinding the coagulation-inhibiting components to 600 mesh, adding them to a blender and mixing them uniformly by high-speed stirring with a blender to obtain a coagulation-inhibiting group package;

[0044] S8, preparing a mud-inhibiting group package; grouping the mud-inhibiting components, fully grinding the mud-inhibiting components to 600 mesh, adding them to a blender and mixing them uniformly by high-speed stirring with a blender to obtain a mud-inhibiting group package;

[0045] S9, mixing and stirring; add the siliceous base material, active group package, temperature-inhibiting group package, reinforcing group package, anti-setting group package, anti-cracking group package and mud-inhibiting group package into the stirrer in turn and mix thoroughly for 15 minutes; then add the hydrophobic group package and stir evenly, then add the accelerating group package and stir evenly, finally add the auxiliary agent package and a small amount of graphene and stir evenly, and put the evenly stirred materials into the silo for packaging.

[0046] The self-repairing group cement is prepared from ordinary cement and active siliceous self-repairing materials.

[0047] The following mix ratios were used for the benchmark and self-repair groups in each group to prepare C35 concrete. The test was conducted in accordance with the requirements of GB 18445-2012, Cement-based Penetrating Crystalline Waterproof Materials (the benchmark concrete did not comply with the specification, but used the following standard mix ratios), as shown in the following table:

[0048] cement sand Pebbles water 386 643 1194 197

[0049] Experimental data:

[0050]

[0051]

[0052] Benchmark Group 1: Select a brand of PO42.5 ordinary Portland cement on the market.

[0053] Group 1: The raw materials used for self-healing ordinary Portland cement are 99 parts of the base group 1 cement and 1 part of the active siliceous self-healing material, which are fully stirred and mixed.

[0054] Benchmark Group 2: Select a brand of PL42.5 Portland cement on the market.

[0055] Group 2: The raw materials used for self-healing silicate cement are 99 parts of the benchmark group 2 cement and 1 part of the active siliceous self-healing material, which are fully stirred and mixed.

[0056] Benchmark Group 3: Select a brand of PP42.5 pozzolanic Portland cement on the market.

[0057] Group 3: The raw materials used for self-healing pozzolanic silicate cement are 99 parts of benchmark group 3 cement and 1 part of active siliceous self-healing material, which are fully stirred and mixed.

[0058] Benchmark Group 4: Select a brand of PS42.5 slag Portland cement on the market.

[0059] Group 4: Self-repairing slag silicate cement uses raw materials made by fully mixing 99 parts of benchmark group 1 cement and 1 part of active siliceous self-repairing material.

[0060] Active siliceous self-healing materials imitate the healing function of biological tissue damage, forming an intelligent self-healing system inside the concrete. When cracks or damage appear in the concrete material, the repair reaction is automatically triggered under the action of water, making it densely healed.

[0061] Example 2:

[0062] Reference Figures 1-6 The active silicon self-healing material is specifically formulated according to the following mass fractions:

[0063] 50-85 parts of siliceous base material, 10-30 parts of active group package, 3-8 parts of anti-cracking group package, 3-5 parts of temperature-inhibiting group package, 0.5-2 parts of hydrophobic group package, 5-10 parts of reinforcing group package, 1-6 parts of accelerating group package, 1-6 parts of inhibiting group package, 1-8 parts of mud-inhibiting group package and 3-10 parts of auxiliary agent package;

[0064] A preparation process for an active siliceous self-repairing material, the preparation process is used to prepare an active siliceous self-repairing material, and the preparation process comprises the following steps:

[0065] S1, preparing an active group package; mixing 1 part of the active substance with 3 parts of the nano-scale open-porous material, adding a small amount of graphene, and thoroughly mixing and stirring in a magnetic stirrer at 2000 rpm for 15 minutes to form a sustained-release active group package, wherein the active substance is one or a combination of two or more of activated silicon dioxide, activated aluminum oxide, activated lignin, and activated magnesium oxide;

[0066] S2, preparing an anti-cracking group package; adding a composite expansion material, an anti-cracking fiber, and a lubricant to a blender in sequence, and mixing them uniformly by high-speed stirring with a blender to obtain an anti-cracking group package, wherein the anti-cracking group package comprises a composite expansion material and an anti-cracking fiber, wherein the composite expansion material is magnesium oxide and the anti-cracking fiber is a nano-scale anti-cracking fiber;

[0067] S3, preparing a temperature-inhibiting group package; grouping the temperature-inhibiting components, fully grinding the temperature-inhibiting components to 600 mesh, and then adding them to a blender and mixing them uniformly by high-speed stirring with a blender to obtain a temperature-inhibiting group package;

[0068] S4, preparing a hydrophobic group package; grouping the hydrophobic groups, grinding the hydrophobic groups to 400 mesh, adding the hydrophobic groups to a blender, and mixing them uniformly by high-speed stirring with a blender to obtain a hydrophobic group package, wherein the hydrophobic group package comprises any one or a combination of two or more of potassium methyl silicate, sodium methyl silicate, and calcium stearate;

[0069] S5, preparing a reinforced group bag; grouping the reinforcing ingredients, fully grinding the reinforcing ingredients to 400 mesh, adding them to a blender and mixing them evenly with a blender at high speed to obtain a reinforced group bag;

[0070] S6, preparing a coagulant group package; grouping the coagulant components, fully grinding the coagulant components to 600 mesh, adding them to a blender and mixing them uniformly by high-speed stirring with a blender to obtain a coagulant group package, wherein the coagulant group package comprises a combination of two or more of lithium carbonate, calcium oxide, sodium silicate, sodium oxide, and potassium oxide;

[0071] S7, preparing a coagulation-inhibiting group package; grouping the coagulation-inhibiting components, fully grinding the coagulation-inhibiting components to 600 mesh, adding them to a blender and mixing them uniformly by high-speed stirring with a blender to obtain a coagulation-inhibiting group package;

[0072] S8, preparing a mud-inhibiting group package; grouping the mud-inhibiting components, fully grinding the mud-inhibiting components to 600 mesh, adding them to a blender and mixing them uniformly by high-speed stirring with a blender to obtain a mud-inhibiting group package;

[0073] S9, mixing and stirring; add the siliceous base material, active group package, temperature-inhibiting group package, reinforcing group package, anti-setting group package, anti-cracking group package and mud-inhibiting group package into the stirrer in turn and mix thoroughly for 15 minutes; then add the hydrophobic group package and stir evenly, then add the accelerating group package and stir evenly, finally add the auxiliary agent package and a small amount of graphene and stir evenly, and put the evenly stirred materials into the silo for packaging.

[0074] The on-site measured crack self-repair effect is shown in Table 1 below:

[0075]

[0076] Table 1. The repair effect of Table 1 is as follows Figure 2 and Figure 3 The field-measured crack self-repairing effect is shown in Table 2 below:

[0077]

[0078] Table 2. The repair effect of Table 2 is as follows Figure 4-Figure 6 shown.

[0079] Application direction:

[0080] Active silica self-healing materials, as a cement activation activator, can be widely used in many fields of building materials and have great social significance:

[0081] 1. Preparation of self-repairing cement:

[0082] Self-repairing cement can be prepared by uniformly stirring 95-99.5 parts of cement and 0.5-5 parts of active siliceous self-repairing material or cement-based penetrating crystallization waterproofing agent at high speed.

[0083] Concrete produced with self-repairing cement formulated with active siliceous self-repairing materials can compensate for the negative effects of unstable aggregate quality to a certain extent, allowing the concrete to have the functions of crack resistance, impermeability and self-repair of cracks, and greatly improve its performance in terms of waterproofing, freeze-thaw resistance, and seawater resistance, thereby achieving the purpose of extending the service life of the building.

[0084] The prepared self-repairing cements include: self-repairing ordinary Portland cement, self-repairing Portland cement, self-repairing pozzolanic Portland cement, self-repairing slag Portland cement, etc.

[0085] 2. Preparation of self-repairing concrete:

[0086] In a commercial mixing station, active silica self-healing materials or cement-based penetrating crystallization waterproofing agents are added to concrete raw materials at a rate of 0.5% to 5% of the cement dosage and mixed together to produce self-healing concrete. The strength grades of self-healing concrete are divided into C30, C35, C40, C45, etc. In addition, according to the durability requirements of concrete, various types of frost-resistant concrete, seawater-resistant concrete, and sulfate-resistant concrete can be produced through inspection and verification.

[0087] 3. Recycling of slag as building materials:

[0088] Slag is currently typically disposed of through backfill. When exposed to groundwater, various hazardous chemicals can easily leak out, posing a threat to the environment and humans. Using slag as an aggregate in concrete or cement products, by adding active siliceous self-healing materials or cement-based penetrating crystallizing waterproofing agents, can enhance concrete performance and maintain its density through high impermeability. This improves concrete quality while achieving the comprehensive utilization of slag.

[0089] 4. Recycling of construction waste as building materials:

[0090] Construction waste accounts for 40% of the total urban waste. The best way to dispose of it is undoubtedly recycling and processing it into concrete aggregate. However, the processed construction waste as concrete aggregate still has problems in terms of quality and strength. By adding active silica self-healing materials or cement-based penetrating crystallization waterproofing agents, the performance of concrete can be greatly improved, and the shortcomings of recycled construction waste materials can be compensated to the greatest extent to meet engineering application requirements.

[0091] Active siliceous self-healing materials imitate the healing function of biological tissue damage, forming an intelligent self-healing system inside the concrete. When cracks or damage appear in the concrete material, the repair reaction is automatically triggered under the action of water, making it densely healed.

[0092] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention should not be considered to be limited to these descriptions. For those skilled in the art of the present invention, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all of these should be considered as the scope of protection of the present invention.

Claims

1. The active siliceous self-healing material has the following characteristics: The formula is prepared according to the following mass fractions: 50-85 parts of siliceous base material, 10-30 parts of active group package, 3-8 parts of anti-cracking group package, 3-5 parts of temperature-inhibiting group package, 0.5-2 parts of hydrophobic group package, 5-10 parts of reinforcing group package, 1-6 parts of accelerating coagulation group package, 1-6 parts of coagulation-inhibiting group package, 1-8 parts of mud-inhibiting group package and 3-10 parts of auxiliary agent package.

2. A process for preparing an active siliceous self-healing material, characterized in that: The preparation process is used to prepare the active siliceous self-healing material according to claim 1, and the preparation process comprises the following steps: S1, preparing an active group package; mixing 1 part of the active substance with 3 parts of the nano-scale open-porous material, adding a small amount of graphene, and thoroughly mixing and stirring in a magnetic stirrer at 1000-2000 rpm for 15 minutes to form a sustained-release active group package; S2, preparing an anti-cracking group bag; adding the composite expansion material, the anti-cracking fiber and the lubricant to the blender in sequence, and mixing them uniformly by high-speed stirring with a blender to obtain an anti-cracking group bag; S3, preparing a temperature-inhibiting group package; grouping the temperature-inhibiting components, fully grinding the temperature-inhibiting components to 600 mesh, and then adding them to a blender and mixing them uniformly by high-speed stirring with a blender to obtain a temperature-inhibiting group package; S4, preparing a hydrophobic group package; grouping the hydrophobic groups, fully grinding the hydrophobic groups to 400 mesh, adding them to a blender and mixing them uniformly by high-speed stirring with a blender to obtain a hydrophobic group package; S5, preparing a reinforced group bag; grouping the reinforcing ingredients, fully grinding the reinforcing ingredients to 400 mesh, adding them to a blender and mixing them evenly with a blender at high speed to obtain a reinforced group bag; S6, preparing a coagulant group package; grouping the coagulant components, fully grinding the coagulant components to 600 mesh, adding them to a blender and mixing them uniformly by high-speed stirring with a blender to obtain a coagulant group package; S7, preparing a coagulation-inhibiting group package; grouping the coagulation-inhibiting components, fully grinding the coagulation-inhibiting components to 600 mesh, adding them to a blender and mixing them uniformly by high-speed stirring with a blender to obtain a coagulation-inhibiting group package; S8, preparing a mud-inhibiting group package; grouping the mud-inhibiting components, fully grinding the mud-inhibiting components to 600 mesh, adding them to a blender and mixing them uniformly by high-speed stirring with a blender to obtain a mud-inhibiting group package; S9, mixing and stirring; add the siliceous base material, active group package, temperature-inhibiting group package, reinforcing group package, anti-setting group package, anti-cracking group package and mud-inhibiting group package into the stirrer in turn and mix thoroughly for 15 minutes; then add the hydrophobic group package and stir evenly, then add the accelerating group package and stir evenly, finally add the auxiliary agent package and a small amount of graphene and stir evenly, and put the evenly stirred materials into the silo for packaging.

3. The process for preparing the active siliceous self-healing material according to claim 2, characterized in that: In S1, the active material is one or a combination of two or more of active silicon dioxide, active aluminum oxide, active lignin and active magnesium oxide.

4. The process for preparing the active siliceous self-healing material according to claim 2, wherein: In the above-mentioned S2, the anti-cracking group package comprises a composite expansion material and anti-cracking fibers, the composite expansion material is magnesium oxide, and the anti-cracking fibers are nano-scale anti-cracking fibers.

5. The process for preparing the active siliceous self-healing material according to claim 2, wherein: In the above-mentioned S4, the hydrophobic group package includes any one or a combination of two or more of potassium methyl silicate, sodium methyl silicate and calcium stearate.

6. The process for preparing the active siliceous self-healing material according to claim 2, characterized in that: In said S6, the accelerating coagulant group package comprises a combination of two or more of lithium carbonate, calcium oxide, sodium silicate, sodium oxide, and potassium oxide.

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