Chemically-activated silica-alumina self-sensing material composition, self-sensing material, and preparation method and application thereof

Abstract

The present application relates to the technical field of chemical activation material, and discloses a composition for chemical activation silico-aluminate self-sensing material, a self-sensing material, a preparation method and application thereof.The composition contains a main agent and an auxiliary agent;the main agent is a first component, aggregate, a second component and a chemical activation agent;45-60wt% of slag, 5-35wt% of metakaolin and 5-20wt% of silica fume are contained in the first component based on the total weight of the first component;the second component is carbon black and steel fiber;and the specific surface area of the carbon black is 50-70m 2 / g, and the average particle size is 40-50nm.The chemical activation silico-aluminate self-sensing material obtained by using the composition for chemical activation silico-aluminate self-sensing material has high strength and toughness, high sensitivity, low carbon and low cost, and has excellent application prospect in the field of building materials and engineering.

Description

Technical Field

[0001] This invention relates to the field of chemically excited materials technology, specifically to compositions for chemically excited silicon-aluminum self-sensing materials, self-sensing materials, their preparation methods, and applications. Background Technology

[0002] Buildings and infrastructure often suffer from aging and deterioration during long-term service, facing potential risks to structural safety and integrity, especially those high-value assets that are nearing the end of their design life.

[0003] For critical components in a structure, accurate structural health monitoring is essential for assessing potential defects and health status. The accuracy of the assessment and prediction is crucial for determining whether infrastructure or structural components need to be modified or replaced.

[0004] Self-sensing concrete has advantages such as low cost, good durability, and strong adaptability. It can monitor damage and deformation such as stress, strain, cracks, and fatigue in the structure by changing the resistivity of the concrete.

[0005] Traditional self-sensing concrete typically uses silicate cement as the binder and carbon-based materials as conductive fillers. Chemically activated aluminosilicate materials are a novel type of green building structural material, primarily made from aluminosilicate minerals (such as metallurgical slag, coal-fired power plant waste, and municipal solid waste) through a chemical reaction with an alkaline activator. These materials, formed under ambient or high-temperature curing conditions, possess a unique microporous structure and high alkaline ion content, thus endowing them with excellent ionic conductivity and multifunctional properties. Furthermore, chemically activated aluminosilicate materials exhibit high early strength and significant corrosion resistance, making them ideal binders for self-sensing concrete. Nevertheless, chemically activated aluminosilicate materials still have some shortcomings in terms of mechanical properties, particularly low flexural strength and poor toughness.

[0006] CN109081643A discloses a carbon fiber / alkali-activated composite pressure-sensitive material and its preparation method. This composite pressure-sensitive material comprises the following components by weight: 0-80 parts fly ash, 20-100 parts slag, 0.23-1.13 parts carbon fiber, 118-153 parts sand, 45-55 parts alkaline activator, 0.3-0.5 parts dispersant, and 0.1-0.2 parts defoamer. However, such concrete often faces problems such as decreased conductivity, insufficient workability, and excessive cost, limiting its long-term performance and large-scale application. Simultaneously, single carbon fiber materials often suffer from low strength, low elastic modulus, and high brittleness, whose application adversely affects structural safety and sensor sensitivity. Summary of the Invention

[0007] The purpose of this invention is to provide a chemically excited aluminosilicate self-sensing material that is high in strength and toughness, high in conductivity and sensitivity, and low in cost.

[0008] To achieve the above objectives, a first aspect of the present invention provides a composition for chemically activated aluminosilicate self-sensing materials, the composition comprising a main agent and an auxiliary agent; wherein the main agent comprises a first component, an aggregate, a second component, and a chemical activator;

[0009] The content of the aggregate is 90-110 parts by weight relative to 100 parts by weight of the first component, the content of the second component is 18-36 parts by weight, and the content of the chemical activator is 35-45 parts by weight.

[0010] Based on the total weight of the first component, the first component contains 45-60 wt% slag, 5-35 wt% metakaolin and 5-20 wt% silica fume.

[0011] The second component consists of carbon black and steel fiber in a mass ratio of 1:2.5-6.5; and the specific surface area of ​​the carbon black is 50-70 m². 2 / g, conductivity 10-15S / cm, average particle size 40-50nm;

[0012] The modulus of the chemical activator is <0.8, and the content of alkali metal oxide in the chemical activator is 3-4 wt%.

[0013] A second aspect of the present invention provides a method for preparing a chemically excited aluminosilicate self-sensing material, the method comprising using the components of the chemically excited aluminosilicate self-sensing material composition described in the first aspect above, comprising:

[0014] (1) Mix and contact the components in the main agent and the components in the auxiliary agent to obtain a slurry;

[0015] (2) The slurry is cured to obtain the chemically excited silicon-aluminum self-sensing material.

[0016] A third aspect of the present invention provides a chemically excited aluminosilicate self-sensing material prepared by the method described in the second aspect above.

[0017] The fourth aspect of the present invention provides the application of the chemically activated aluminosilicate self-sensing material described in the third aspect above in the field of building materials.

[0018] The chemically excited silicon-aluminum self-sensing material obtained by using the composition of the chemically excited silicon-aluminum self-sensing material provided by the present invention has excellent flexural strength and good toughness. Moreover, the raw materials in this self-sensing material are low-carbon, environmentally friendly, and low-cost. It is suitable for intelligent health monitoring of key structures such as bridges, large concrete beams, and beam-column joints under bending stress. It can also be applied to cast-in-place joints of prefabricated buildings, thereby playing a role in real-time monitoring of key parts.

[0019] The method for preparing chemically excited silicon-aluminum self-sensing materials provided by this invention is simple to operate and conducive to large-scale production. Detailed Implementation

[0020] The endpoints and any values ​​of the ranges disclosed herein are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of the various ranges, the endpoint values ​​of the various ranges and individual point values, and individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed herein.

[0021] As previously described, a first aspect of the present invention provides a composition for chemically activated aluminosilicate self-sensing materials, the composition comprising a main agent and an auxiliary agent; the main agent being a first component, an aggregate, a second component, and a chemical activator;

[0022] The content of the aggregate is 90-110 parts by weight relative to 100 parts by weight of the first component, the content of the second component is 18-36 parts by weight, and the content of the chemical activator is 35-45 parts by weight.

[0023] Based on the total weight of the first component, the first component contains 45-60 wt% slag, 5-35 wt% metakaolin and 5-20 wt% silica fume.

[0024] The second component consists of carbon black and steel fiber in a mass ratio of 1:2.5-6.5; and the specific surface area of ​​the carbon black is 50-70 m². 2 / g, conductivity 10-15S / cm, average particle size 40-50nm;

[0025] The modulus of the chemical activator is <0.8, and the content of alkali metal oxide in the chemical activator is 3-4 wt%.

[0026] This invention provides exemplary examples to illustrate the meaning of the content of alkali metal oxides in this invention. Exemplarily, when the chemical activator is a sodium-based activator (Na₂O·nSiO₂), the content of alkali metal oxides in the sodium-based activator is the ratio of the mass of Na₂O to the total mass of Na₂O and SiO₂ in the chemical activator; when the chemical activator is a potassium-based activator (K₂O·nSiO₂), the content of alkali metal oxides in the potassium-based activator is the ratio of the mass of K₂O to the total mass of K₂O and SiO₂ in the chemical activator.

[0027] In a preferred embodiment, the chemical activator is a potassium-based activator.

[0028] According to a preferred embodiment, the potassium-based activator is prepared by a method comprising the following steps:

[0029] Potassium silicate, potassium hydroxide, and water are mixed to obtain a potassium-based activator.

[0030] The present invention does not have any particular requirements for the mixing method; it is sufficient to ensure that potassium silicate, potassium hydroxide, and water are mixed evenly. Those skilled in the art can choose the appropriate method as needed. For example, mixing is carried out at 20-25°C and 200-400 rpm for 10-20 minutes.

[0031] It should be noted that the present invention does not have any particular requirements on the type of water. For example, it can be deionized water or ultrapure water. Those skilled in the art can choose according to their needs. The present invention is described only once in one aspect and is not described repeatedly. Those skilled in the art should not understand this as a limitation of the present invention.

[0032] Preferably, the mass ratio of straight fibers to hooked fibers in the steel fibers is 1:0.25-1. The inventors of this invention have discovered that, under this preferred condition, the chemically excited aluminosilicate self-sensing material exhibits the best enhancement effect on flexural strength and toughness.

[0033] In a preferred embodiment, the steel fiber has a diameter of 0.18-0.23 mm and a length of 12-14 mm.

[0034] Preferably, the modulus of the chemical activator is 0.6-0.7. The inventors of this invention have discovered that, under this preferred condition, the obtained chemically activated aluminosilicate self-sensing material exhibits excellent workability and mechanical strength.

[0035] Preferably, based on the total weight of the first component, the first component contains 50-60 wt% slag, 25-35 wt% metakaolin, and 5-15 wt% silica fume.

[0036] Preferably, the silica fume has an average particle size of 5-9 μm and a specific surface area of ​​1.75 × 10⁻⁶. 5 -1.80×10 5 m 2 / g, silica content ≥96wt%.

[0037] According to a preferred embodiment, the slag contains 30-45 wt% silica, 10-20 wt% alumina, and 35-50 wt% calcium oxide.

[0038] According to another preferred embodiment, the metakaolin contains 45-60 wt% silica, 35-50 wt% alumina, and <2 wt% ferric oxide.

[0039] In a preferred embodiment, the aggregate is quartz sand.

[0040] Preferably, the average particle size of the quartz sand is 0.1-1.0 mm.

[0041] It should be noted that the average particle size in this invention refers to the particle size corresponding to the cumulative particle size distribution fraction in the powder sample reaching 50% when tested using a laser particle size analyzer.

[0042] It should be noted that, in this invention, the modulus of the chemical activator is the ratio of the molar amount of SiO2 to the molar amount of the alkali metal oxide in the chemical activator. For example, when the chemical activator is a potassium-based activator (K2O·nSiO2), the modulus of the chemical activator is the ratio of the molar amount of SiO2 to the molar amount of K2O.

[0043] Preferably, the additives include dispersants and defoamers;

[0044] The content of the dispersant is 0.01-6 parts by weight relative to 100 parts by weight of the first component, and the content of the defoamer is 0.005-3 parts by weight.

[0045] In a preferred embodiment, the dispersant is selected from at least one of polyvinylpyrrolidone, polyacrylate, polyacrylamide, polyvinylidene fluoride, and sodium dodecylbenzenesulfonate.

[0046] Preferably, the defoamer is selected from at least one of tributyl phosphate, polydimethylsiloxane, polypropylene glycol, and polyoxyethylene.

[0047] As previously described, a second aspect of the present invention provides a method for preparing a chemically excited aluminosilicate self-sensing material, the method comprising applying the components of the chemically excited aluminosilicate self-sensing material composition described in the first aspect, including:

[0048] (1) Mix and contact the components in the main agent and the components in the auxiliary agent to obtain a slurry;

[0049] (2) The slurry is cured to obtain the chemically excited silicon-aluminum self-sensing material.

[0050] According to a preferred embodiment, step (1), the step of mixing and contacting the components in the main agent and the components in the auxiliary agent, includes:

[0051] S1: The additives, chemical activators, and carbon black in the second component are first stirred and mixed to obtain mixed slurry I;

[0052] S2: The mixed slurry I and the mixture I containing the first component are mixed by a second stirring to obtain mixed slurry II;

[0053] S3: The steel fibers in the second component and the mixture II containing the mixed slurry II and aggregates are mixed in a third stirring to obtain the slurry.

[0054] Preferably, in step S1, the conditions for the first stirring and mixing include: a rotation speed of 500-1000 rpm and a time of 20-60 min.

[0055] In a preferred embodiment, in step S2, the conditions for the second stirring and mixing include: stirring at 120-140 rpm for 0.5-1 min, and then stirring at 260-300 rpm for 0.5-1.5 min.

[0056] Preferably, in step S3, the conditions for the third stirring and mixing include: a rotation speed of 260-300 rpm and a time of 0.5-1.5 min.

[0057] According to a preferred embodiment, in step S3, the mixture II is prepared by a method comprising the following steps:

[0058] The mixture II and the aggregate are first stirred at 120-140 rpm for 0.5-1 min, and then stirred at 260-300 rpm for 0.5-1.5 min to obtain the mixture II.

[0059] Preferably, in step (2), the conditions for the maintenance treatment include: a temperature of 15-25°C and a humidity of 60-90%.

[0060] According to a preferred embodiment, in step (2), before the curing treatment, the slurry is first cast into shape and covered with plastic wrap. It is then left to stand for 18-30 hours in an environment of 18-22°C and relative humidity ≥90% before the curing treatment is carried out.

[0061] In a preferred embodiment, the curing treatment is carried out in a constant temperature and humidity curing chamber.

[0062] As previously described, the third aspect of the present invention provides a chemically excited silicon-aluminum self-sensing material prepared by the method described in the second aspect above.

[0063] As previously stated, the fourth aspect of the present invention provides the application of the chemically activated aluminosilicate self-sensing material described in the third aspect above in the field of building materials.

[0064] The present invention will be described in detail below through examples. In the following examples, unless otherwise specified, the raw materials are all commercially available or self-made.

[0065] Potassium silicate: purchased from Shanghai Maclean Biochemical Technology Co., Ltd., grade P850160.

[0066] Slag: The content of silicon dioxide is 32.09 wt%, the content of aluminum oxide is 16.55 wt%, and the content of calcium oxide is 37.65 wt%, purchased from Jiyuan Guotai Micro Powder Technology Co., Ltd.

[0067] Metakaolin: containing 47.19 wt% silica, 49.11 wt% alumina, and 0.79 wt% ferric oxide, purchased from Inner Mongolia Chaoneng New Materials Co., Ltd.

[0068] Silica fume: SiO2 content is 97.42 wt%, average particle size is 7.73 μm, and specific surface area is 1.80 × 10⁻⁶. 5 m 2 / g, purchased from Shanghai Tiankai Building Materials Technology Co., Ltd., grade 970 silica powder.

[0069] Aggregate: Quartz sand with an average particle size of 0.4mm. Grade 5, 6 and 7 quartz sand purchased from Anhui Jingyou Sand and Gravel Sales Co., Ltd. are mixed in a mass ratio of 1:1:1 before use.

[0070] Carbon black:

[0071] Carbon Black I: Specific surface area is 62m² 2 / g, conductivity 12S / cm, average particle size 45nm, purchased from Dongguan Kelude Innovation Technology Co., Ltd., brand name Super P Li.

[0072] Carbon black DI: specific surface area is 420m² 2 The material has a resistivity of approximately 0.67 S / cm and an average particle size of 23-28 nm. It was purchased from Suqian Nakaite New Material Technology Co., Ltd., and its grade is Super-P.

[0073] Steel fiber:

[0074] Steel Fiber I: The mass ratio of straight steel fiber to hooked steel fiber is 1:1. The diameter of the steel fiber is 0.2 mm and the length is 13 mm. The straight steel fiber is purchased from Shanghai Shenxiang Concrete Fiber Co., Ltd., with the grade SAP0213SW. The hooked steel fiber is purchased from Shanghai Shenxiang Concrete Fiber Co., Ltd., with the grade SAP0213SWH.

[0075] Steel Fiber II: Straight steel fiber with a diameter of 0.2 mm and a length of 13 mm, purchased from Shanghai Shenxiang Concrete Fiber Co., Ltd., grade SAP0213SW.

[0076] Additives:

[0077] Dispersant: Polyvinylpyrrolidone, purchased from Shanghai Maclean Biochemical Technology Co., Ltd., brand name P816205.

[0078] Defoamer: Tributyl phosphate, purchased from Shanghai McLean Biochemical Technology Co., Ltd., brand name T818517.

[0079] The following preparation examples and comparative preparation examples are used to illustrate the preparation of potassium-based activators.

[0080] Preparation Example 1

[0081] Potassium silicate, potassium hydroxide and water were mixed (at 25°C and 300 rpm for 15 min) to obtain a potassium-based activator, which was named chemical activator I.

[0082] The specific formula is shown in Table 1.

[0083] Unless otherwise specified, Preparation Example 2 was carried out using a method similar to that of Preparation Example 1, except that the raw material formulation is as shown in Table 1.

[0084] Comparative Preparation Example 1

[0085] This preparation example was carried out using a method similar to that of Preparation Example 1, except that the formulation was different from that in Preparation Example 1; a potassium-based activator was prepared and named chemical activator DI, and the specific formulation is shown in Table 1.

[0086] Table 1

[0087] Preparation Example 1 Preparation Example 2 Comparative Preparation Example 1 Potassium silicate / g 3.39 2.82 4.52 potassium hydroxide / g 5.85 6.07 5.42 Deionized water / g 35.71 36.76 33.61 Modulus of potassium-based activator 0.6 0.5 0.8 Content of alkali metal oxides in potassium-based activators / wt% 3.39 3.39 3.39 Nomenclature of potassium-based activators Chemical activator I Chemical activator II Chemical activator DI

[0088] Example 1

[0089] This embodiment illustrates the preparation of chemically excited silicon-aluminum self-sensing materials according to the formulation and process parameters shown in Table 2, following the steps below:

[0090] (1) The additives, chemical activators and carbon black in the second component are first stirred and mixed to obtain mixed slurry I;

[0091] (2) The mixed slurry I and the mixture I containing the first component are mixed by a second stirring to obtain mixed slurry II;

[0092] (3) The mixed slurry II and the aggregate are first stirred at 140 rpm for 1 min, and then stirred at 285 rpm for 1 min to obtain the mixed material II; the steel fiber in the second component and the mixed material II containing the mixed slurry II and the aggregate are mixed in a third stirring to obtain the slurry;

[0093] (4) The slurry is cured to obtain the chemically excited aluminosilicate self-sensing material;

[0094] The first mixing speed is 800 rpm and the time is 40 min;

[0095] Second mixing: first mix at 140 rpm for 1 minute, then mix at 285 rpm for 1 minute;

[0096] The third mixing speed is 285 rpm, and the time is 1 min;

[0097] The curing temperature is 20℃ and the humidity is 90%.

[0098] Unless otherwise specified, Example 2 was carried out using a method similar to that of Example 1, except for the raw material formulation, as shown in Table 2, to prepare the chemically excited silicon-aluminum self-sensing material.

[0099] Example 3

[0100] This embodiment uses a method similar to that of Embodiment 1, except that in this embodiment, steel fiber II is used to replace steel fiber I in Embodiment 1 with an equal amount. All parts not listed are the same as in Embodiment 1, and the chemically excited silicon-aluminum self-sensing material is prepared.

[0101] Example 4

[0102] This embodiment uses a method similar to that of Example 1, except that: in this embodiment, chemical activator II of equal weight is used to replace chemical activator I in Example 1. All parts not listed are the same as in Example 1, and the chemically activated silicon-aluminum self-sensing material is prepared.

[0103] Comparative Example 1

[0104] This comparative example was conducted using a method similar to that of Example 1, except that an equal amount of carbon black DI was used to replace carbon black I in Example 1. All parts not listed were the same as in Example 1, and the chemically excited aluminosilicate self-sensing material was prepared.

[0105] Comparative Example 2

[0106] This comparative example was conducted using a method similar to that of Example 1, except that the mass ratio of carbon black to steel fiber in the second component was adjusted to 1:0.65 while keeping the amount of the second component unchanged. All other parts not listed are the same as in Example 1, and the chemically excited aluminosilicate self-sensing material was prepared.

[0107] Comparative Example 3

[0108] This comparative example was conducted using a method similar to that of Example 1, except that: in this comparative example, an equal amount of chemical activator DI was used to replace chemical activator I in Example 1. All parts not listed are the same as in Example 1, and the chemically activated silicon-aluminum self-sensing material was prepared.

[0109] Table 2

[0110]

[0111] Test case

[0112] (1) The flexural strength (flexural strength after 28 days of curing treatment) of the chemically excited silicon-aluminum self-sensing material prepared in the above example was tested using the method specified in GB / T 17671-2021.

[0113] (2) The flexural toughness coefficient of the chemically excited silicon-aluminum self-sensing material prepared in the above example was tested using the method specified in JSCE SF-4. Toughness T b δ represents the area under the load-displacement curve when the deflection is δ; L represents the span of the specimen; b represents the width of the specimen; h represents the height of the specimen.

[0114] (3) The compressive strength (compressive strength after 28 days of curing treatment) of the chemically excited silicon-aluminum self-sensing material prepared in the above example was tested using the method specified in GB / T 17671-2021.

[0115] (4) The resistance of the chemically excited silicon-aluminum self-sensing material prepared in the above example was tested using the method specified in https: / / doi.org / 10.1016 / j.jobe.2022.105022 (resistance after 28 days of curing treatment).

[0116] (5) The bending strain sensitivity GF (strain sensitivity after 28 days of curing treatment, GF=|FCR| / ε, where FCR is the resistivity change rate and ε is the strain under bending stress) of the chemically excited silicon-aluminum self-sensing material prepared in the above example was tested using the method specified in https: / / doi.org / 10.1021 / acsami.7b00419.

[0117] The results of the above performance tests are shown in Table 3.

[0118] Table 3

[0119]

[0120] The results above show that the chemically excited silicon-aluminum self-sensing material prepared by the composition provided by the present invention has good flexural strength and compressive strength, good electrical conductivity and high bending strain sensitivity, and is especially suitable for intelligent health monitoring of key structures such as bridges, large concrete beams and beam-column joints under bending stress.

[0121] The preferred embodiments of the present invention have been described in detail above; however, the present invention is not limited thereto. Within the scope of the inventive concept, various simple modifications can be made to the technical solutions of the present invention, including combinations of various technical features in any other suitable manner. These simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A composition for use in chemically excited silicon-aluminum self-sensing materials, characterized in that, The composition contains a main agent and an adjuvant; the main agent is a first component, aggregate, a second component, and a chemical activator; The content of the aggregate is 90-110 parts by weight relative to 100 parts by weight of the first component, the content of the second component is 18-36 parts by weight, and the content of the chemical activator is 35-45 parts by weight. Based on the total weight of the first component, the first component contains 45-60 wt% slag, 5-35 wt% metakaolin and 5-20 wt% silica fume. The second component consists of carbon black and steel fiber in a mass ratio of 1:2.5-6.5; and the specific surface area of ​​the carbon black is 50-70 m². 2 / g, conductivity 10-15 S / cm, average particle size 40-50nm; the steel fiber has a diameter of 0.18-0.23mm and a length of 12-14mm; The modulus of the chemical activator is <0.8, and the content of alkali metal oxide in the chemical activator is 3-4 wt%.

2. The composition according to claim 1, characterized in that, The mass ratio of straight fibers to hooked fibers in the steel fibers is 1:0.25-1.

3. The composition according to claim 1 or 2, characterized in that, The modulus of the chemical activator is 0.6-0.

7.

4. The composition according to claim 1 or 2, characterized in that, Based on the total weight of the first component, the first component contains 50-60 wt% slag, 25-35 wt% metakaolin and 5-15 wt% silica fume. And / or, the silica fume has an average particle size of 5-9 μm and a specific surface area of ​​1.75 × 10⁻⁶. 5 -1.80×10 5 m 2 / g, silica content ≥96wt%.

5. The composition according to claim 1 or 2, characterized in that, The slag contains 30-45 wt% silica, 10-20 wt% alumina, and 35-50 wt% calcium oxide. And / or, the metakaolin contains 45-60 wt% silica, 35-50 wt% alumina, and <2 wt% ferric oxide; And / or, the aggregate is quartz sand.

6. The composition according to claim 1 or 2, characterized in that, The additives include dispersants and defoamers; The content of the dispersant is 0.01-6 parts by weight relative to 100 parts by weight of the first component, and the content of the defoamer is 0.005-3 parts by weight.

7. A method for preparing chemically excited aluminosilicate self-sensing materials, characterized in that, This method utilizes the components of the chemically excited aluminosilicate self-sensing material composition according to any one of claims 1-6, comprising: (1) Mix and contact the components in the main agent and the components in the auxiliary agent to obtain a slurry; (2) The slurry is cured to obtain the chemically excited silicon-aluminum self-sensing material.

8. The method according to claim 7, characterized in that, In step (1), the step of mixing and contacting the components in the main agent and the components in the auxiliary agent includes: S1: The additives, chemical activators, and carbon black in the second component are first stirred and mixed to obtain mixed slurry I; S2: The mixed slurry I and the mixture I containing the first component are mixed by a second stirring to obtain mixed slurry II; S3: The steel fibers in the second component and the mixture II containing the mixed slurry II and aggregates are mixed in a third stirring to obtain the slurry.

9. A chemically excited aluminosilicate self-sensing material prepared by the method of claim 7 or 8.

10. The application of the chemically activated aluminosilicate self-sensing material according to claim 9 in the field of building materials.

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