Cement-based capillary crystalline waterproof material as well as preparation method and application thereof

Abstract

The invention relates to a cement-based capillary crystalline waterproof material as well as a preparation method and application thereof. The cement-based permeable crystallization type waterproof material is prepared from 20 to 50 parts of cement, 3 to 8 parts of calcium formate, 2 to 10 parts of sodium methylsilanolate, 1 to 5 parts of sodium fluosilicate, 1 to 3 parts of magnesium lithium silicate, 0.5 to 0.8 part of tartaric acid, 1 to 5 parts of sodium glutamate diacetate, 0.5 to 2 parts of methyl acrylate, 0.1 to 1 part of expanding agent, 0.1 to 0.5 part of sodium bentonite and 0.1 to 0.5 part of polycarboxylate superplasticizer. The cement-based permeable crystallization type waterproof material provided by the invention is internally doped in concrete, has the advantages of low doping amount, high waterproof repairing efficiency and the like, can improve the strength and durability of the concrete, can realize the same service life as the concrete, and achieves the self-repairing purpose of permanent waterproofing.

Description

Technical Field

[0001] This application relates to, but is not limited to, the field of building materials technology, specifically to cement-based penetrating crystalline waterproofing materials, their preparation methods, and applications. Background Technology

[0002] Cement-based penetrating crystalline waterproofing materials (CCCW) possess numerous advantages such as good durability, excellent waterproofing effect, and environmental friendliness. They are widely used to prevent water seepage and steel corrosion in concrete structures, achieving significant waterproofing results. Cement-based penetrating crystalline waterproofing materials include cement-based penetrating crystalline waterproofing coatings and cement-based penetrating crystalline waterproofing agents. Currently, cement-based penetrating crystalline waterproofing coatings are more widely used, while research on cement-based penetrating crystalline waterproofing agents is limited. Furthermore, commercially available internally adsorbed cement-based penetrating crystalline materials suffer from problems such as high admixture dosage and low repair efficiency, hindering concrete self-waterproofing and preventing self-repair. Summary of the Invention

[0003] The following is an overview of the subject matter described in detail herein. This overview is not intended to limit the scope of protection of this application.

[0004] This application provides a cement-based penetrating crystalline waterproofing material and its preparation method. The cement-based penetrating crystalline waterproofing material provided in this application requires a low dosage when added to concrete and exhibits high repair efficiency. Using water as a carrier, the active components of the cement-based penetrating crystalline waterproofing material undergo physicochemical reactions to form water-insoluble crystals, creating a closed waterproof layer with the concrete itself. This provides a waterproof and dense layer, effectively blocking external moisture or other liquid erosion, achieving long-lasting waterproofing and corrosion resistance, while also protecting the reinforcing steel from corrosion. The active components in the cement-based penetrating crystalline waterproofing material also promote the hydration of unhydrated cement particles, increasing the overall strength of the concrete. Furthermore, the precipitate products of the cement-based penetrating crystalline waterproofing material have micro-expansion properties, which can compensate for shrinkage during the plastic stage, reducing cracks caused by the plastic stage. When cracks appear in the concrete, the cement-based penetrating crystalline waterproofing material reacts with water to form precipitates, which also have micro-expansion properties, blocking the cracks and exhibiting a high degree of adhesion to the concrete matrix.

[0005] In one aspect, this application provides a cement-based penetrating crystalline waterproofing material, comprising the following components by weight: 20-50 parts cement, 3-8 parts calcium formate, 2-10 parts sodium methylsilyl alcohol, 1-5 parts sodium fluorosilicate, 1-3 parts lithium magnesium silicate, 0.5-0.8 parts tartaric acid, 1-5 parts sodium diacetate of glutamic acid, 0.5-2 parts methyl acrylate, 0.1-1 part expanding agent, 0.1-0.5 parts sodium bentonite, and 0.1-0.5 parts polycarboxylate superplasticizer.

[0006] In the embodiments of this application, the cement-based penetrating crystalline waterproof material comprises, by weight: 20-50 parts cement, 5-8 parts calcium formate, 5-10 parts sodium methylsilyl alcohol, 2-5 parts sodium fluorosilicate, 1-3 parts lithium magnesium silicate, 0.5-0.8 parts tartaric acid, 2-5 parts sodium diacetate of glutamic acid, 0.5-2 parts methyl acrylate, 0.1-1 parts expanding agent, 0.1-0.5 parts sodium bentonite, and 0.1-0.5 parts polycarboxylate superplasticizer.

[0007] In the embodiments of this application, the cement-based penetrating crystalline waterproof material is composed of the following raw materials in parts by weight: 20-50 parts cement, 3-8 parts calcium formate, 2-10 parts sodium methylsilyl alcohol, 1-5 parts sodium fluorosilicate, 1-3 parts lithium magnesium silicate, 0.5-0.8 parts tartaric acid, 1-5 parts sodium diacetate of glutamic acid, 0.5-2 parts methyl acrylate, 0.1-1 parts expanding agent, 0.1-0.5 parts sodium bentonite, and 0.1-0.5 parts polycarboxylate superplasticizer.

[0008] In the embodiments of this application, the cement-based penetrating crystalline waterproof material is composed of the following raw materials in parts by weight: 20-50 parts cement, 5-8 parts calcium formate, 5-10 parts sodium methylsilyl alcohol, 2-5 parts sodium fluorosilicate, 1-3 parts lithium magnesium silicate, 0.5-0.8 parts tartaric acid, 2-5 parts sodium diacetate of glutamic acid, 0.5-2 parts methyl acrylate, 0.1-1 parts expanding agent, 0.1-0.5 parts sodium bentonite, and 0.1-0.5 parts polycarboxylate superplasticizer.

[0009] In the embodiments of this application, the expanding agent is a plastic expanding agent.

[0010] On the other hand, this application provides a method for preparing the cement-based penetrating crystalline waterproof material as described above, comprising: 1) Weigh out the following components by weight: 20-50 parts cement, 3-8 parts calcium formate, 2-10 parts sodium methylsilyl alcohol, 1-5 parts sodium fluorosilicate, 1-3 parts lithium magnesium silicate, 0.5-0.8 parts tartaric acid, 1-5 parts sodium diacetate of glutamic acid, 0.5-2 parts methyl acrylate, 0.1-1 parts expansion agent, 0.1-0.5 parts sodium bentonite, and 0.1-0.5 parts polycarboxylate superplasticizer. 2) Place cement, expansion agent, and sodium bentonite into a mixer and mix. Gradually add polycarboxylate superplasticizer during the mixing process and mix for 10-30 minutes. Then add calcium formate, sodium methylsiloxane, sodium fluorosilicate, lithium magnesium silicate, tartaric acid, sodium diacetate of glutamic acid, and methyl acrylate, and continue mixing for 20-30 minutes. The mixer speed is 60 r / min-120 r / min. 3) Then the mixed materials are ball-milled into powder in a ball mill for 30-40 minutes to obtain cement-based penetrating crystalline waterproof material.

[0011] In the embodiments of this application, the expanding agent is a plastic expanding agent.

[0012] In an embodiment of this application, in step 3), the mixed material is prevented from coming into contact with water during ball milling.

[0013] On the other hand, this application provides the application of the cement-based penetrating crystalline waterproofing material as described above in the preparation of concrete.

[0014] The cement-based penetrating crystalline waterproofing material provided in this application requires a low dosage in concrete and exhibits high repair efficiency. The active components in this material promote the hydration of unhydrated cement particles, increasing the overall strength of the concrete. The precipitate products of this material have micro-expansion properties, which can compensate for shrinkage during the plastic stage, reducing cracks caused by this process. When cracks appear in the concrete, the material reacts with water to form precipitates, which also exhibit micro-expansion properties, sealing the cracks and demonstrating high bonding strength with the concrete matrix.

[0015] Other features and advantages of this application will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the application. Other advantages of this application may be realized and obtained by means of the methods described in the description. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in detail below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be arbitrarily combined with each other.

[0017] This application provides a cement-based penetrating crystalline waterproofing material, comprising, by weight: 20-50 parts cement, 3-8 parts calcium formate, 2-10 parts sodium methylsilyl alcohol, 1-5 parts sodium fluorosilicate, 1-3 parts lithium magnesium silicate, 0.5-0.8 parts tartaric acid, 1-5 parts sodium diacetate of glutamic acid, 0.5-2 parts methyl acrylate, 0.1-1 part expanding agent, 0.1-0.5 parts sodium bentonite, and 0.1-0.5 parts polycarboxylate superplasticizer.

[0018] In the embodiments of this application, the cement-based penetrating crystalline waterproof material comprises, by weight: 20-50 parts cement, 5-8 parts calcium formate, 5-10 parts sodium methylsilyl alcohol, 2-5 parts sodium fluorosilicate, 1-3 parts lithium magnesium silicate, 0.5-0.8 parts tartaric acid, 2-5 parts sodium diacetate of glutamic acid, 0.5-2 parts methyl acrylate, 0.1-1 parts expanding agent, 0.1-0.5 parts sodium bentonite, and 0.1-0.5 parts polycarboxylate superplasticizer.

[0019] In the embodiments of this application, the cement-based penetrating crystalline waterproof material is composed of the following raw materials in parts by weight: 20-50 parts cement, 3-8 parts calcium formate, 2-10 parts sodium methylsilyl alcohol, 1-5 parts sodium fluorosilicate, 1-3 parts lithium magnesium silicate, 0.5-0.8 parts tartaric acid, 1-5 parts sodium diacetate of glutamic acid, 0.5-2 parts methyl acrylate, 0.1-1 parts expanding agent, 0.1-0.5 parts sodium bentonite, and 0.1-0.5 parts polycarboxylate superplasticizer.

[0020] In the embodiments of this application, the cement-based penetrating crystalline waterproof material is composed of the following raw materials in parts by weight: 20-50 parts cement, 5-8 parts calcium formate, 5-10 parts sodium methylsilyl alcohol, 2-5 parts sodium fluorosilicate, 1-3 parts lithium magnesium silicate, 0.5-0.8 parts tartaric acid, 2-5 parts sodium diacetate of glutamic acid, 0.5-2 parts methyl acrylate, 0.1-1 parts expanding agent, 0.1-0.5 parts sodium bentonite, and 0.1-0.5 parts polycarboxylate superplasticizer.

[0021] In the embodiments of this application, the expanding agent is a plastic expanding agent.

[0022] This application also provides a method for preparing the cement-based penetrating crystalline waterproof material as described above, comprising: 1) Weigh out the following components by weight: 20-50 parts cement, 3-8 parts calcium formate, 2-10 parts sodium methylsilyl alcohol, 1-5 parts sodium fluorosilicate, 1-3 parts lithium magnesium silicate, 0.5-0.8 parts tartaric acid, 1-5 parts sodium diacetate of glutamic acid, 0.5-2 parts methyl acrylate, 0.1-1 parts expansion agent, 0.1-0.5 parts sodium bentonite, and 0.1-0.5 parts polycarboxylate superplasticizer. 2) Place cement, expansion agent, and sodium bentonite into a mixer and mix. Gradually add polycarboxylate superplasticizer during the mixing process and mix for 10-30 minutes. Then add calcium formate, sodium methylsiloxane, sodium fluorosilicate, lithium magnesium silicate, tartaric acid, sodium diacetate of glutamic acid, and methyl acrylate, and continue mixing for 20-30 minutes. The mixer speed is 60 r / min-120 r / min. 3) Then, the mixed materials are ball-milled into powder in a ball mill for 30-40 minutes. Avoid contact with water during ball milling to obtain cement-based penetrating crystalline waterproof material.

[0023] In the embodiments of this application, the expanding agent is a plastic expanding agent.

[0024] In an embodiment of this application, in step 3), the mixed material is prevented from coming into contact with water during ball milling.

[0025] This application also provides the application of the cement-based penetrating crystalline waterproofing material as described above in the preparation of concrete.

[0026] In the cement-based penetrating crystalline waterproofing material of this application, calcium formate is used as a calcium ion supplement, which can replenish calcium ions in the concrete, causing a common ion effect in the concrete and promoting the crystal growth process. The purpose of forming calcium ion complexes is to ensure that the generated calcium ion complexes can form stable precipitates with SiO3, which readily reacts with calcium ions. 2- After the calcium ions are removed, these substances are released to reform free radicals, which then combine with other calcium ions to begin a new complexation cycle.

[0027] In the cement-based penetrating crystalline waterproofing material of this application, sodium methylsiloxane, sodium fluorosilicate, and lithium magnesium silicate have similar functions. They are all siliceous materials. When they come into contact with water or CO2, they can generate a network of organosilicon resin film to form a hydrophobic layer. At the same time, when the silicone resin comes into contact with water, it undergoes a hydration reaction to fill the micropores of the mortar, thereby improving the density and impermeability.

[0028] In the cement-based penetrating crystalline waterproofing material of this application, tartaric acid and sodium glutamate diacetate are co-solubilizing complexing components that can form complexes with calcium ions.

[0029] The method of using the cement-based penetrating crystalline waterproofing material provided in this application is as follows: Add the cement-based penetrating crystalline waterproofing material to the coarse aggregate and fine aggregate, mix thoroughly in a concrete mixer for 2-3 minutes until evenly mixed, and then add cement and water and mix evenly.

[0030] The materials used in the embodiments and comparative examples of this application are sourced from the following sources: Ordinary Portland cement was purchased from Southern Cement, type PO42.5; Calcium formate was purchased from Shanghai Yuanye Biotechnology Co., Ltd., model T20934-5g; Sodium methylsilanolate was purchased from Shandong Xinmaoyuan Chemical Co., Ltd., model ZS-002; Sodium fluorosilicate was purchased from Wuhan Jiyesheng Chemical Co., Ltd., model number 16893-85-9; Lithium magnesium silicate was purchased from Shanghai Yuanye Biotechnology Co., Ltd., model S24861-500; Tartaric acid was purchased from Zhejiang Lanxi Shengda Tartaric Acid Co., Ltd., model number 147-71-7; Sodium diacetate of glutamate was purchased from Shandong Taihe Technology Co., Ltd., model number 51981-21-6; Methyl acrylate was purchased from Adamas Ltd., model number 91667A; The expanding agent is a plastic expanding agent, purchased from Nanjing Chuhai New Material Technology Co., Ltd., model EP-2; Sodium-based bentonite was purchased from Hebei Mingzhe Mineral Products Co., Ltd., model MZ-022; The polycarboxylate superplasticizer was purchased from Suzhou Xingbang Chemical Co., Ltd., model PC-1051.

[0031] Example 1 This embodiment provides a cement-based penetrating crystalline waterproof material. The raw materials for preparing the cement-based penetrating crystalline waterproof material are: 20 parts cement, 3 parts calcium formate, 2 parts sodium methylsiloxane, 1 part sodium fluorosilicate, 1 part lithium magnesium silicate, 0.5 parts tartaric acid, 1 part sodium diacetate of glutamic acid, 0.5 parts methyl acrylate, 0.1 parts expansion agent, 0.1 parts sodium bentonite, and 0.1 parts polycarboxylate superplasticizer.

[0032] The cement-based penetrating crystalline waterproofing material of this embodiment is prepared by the following method: 1) Weigh out the following components according to the above weight proportions: cement, calcium formate, sodium methylsilanolate, sodium fluorosilicate, lithium magnesium silicate, tartaric acid, sodium diacetate of glutamic acid, methyl acrylate, expanding agent, sodium bentonite, and polycarboxylate superplasticizer. 2) Place cement, expansion agent, and sodium bentonite into a mixer and mix. Gradually add polycarboxylate superplasticizer during the mixing process and mix for 10 minutes. Then add calcium formate, sodium methylsiloxane, sodium fluorosilicate, lithium magnesium silicate, tartaric acid, sodium diacetate of glutamate, and methyl acrylate, and continue mixing for 20 minutes. The mixer speed is 60 r / min-120 r / min. 3) Then, the mixture is ball-milled into powder in a ball mill for 30 minutes. Avoid contact with water during ball milling to obtain cement-based penetrating crystalline waterproof material.

[0033] Example 2 This embodiment provides a cement-based penetrating crystalline waterproof material. The raw materials for preparing the cement-based penetrating crystalline waterproof material are: 30 parts cement, 5 parts calcium formate, 6 parts sodium methylsilyl alcohol, 4 parts sodium fluorosilicate, 2 parts lithium magnesium silicate, 0.7 parts tartaric acid, 3 parts sodium diacetate of glutamic acid, 1.2 parts methyl acrylate, 0.3 parts expansion agent, 0.1 parts sodium bentonite, and 0.25 parts polycarboxylate superplasticizer.

[0034] The preparation method of the cement-based penetrating crystalline waterproof material in this embodiment is the same as that in Embodiment 1.

[0035] Example 3 This embodiment provides a cement-based penetrating crystalline waterproof material. The raw materials for preparing the cement-based penetrating crystalline waterproof material are: 30 parts cement, 3 parts calcium formate, 4 parts sodium methylsilyl alcohol, 2 parts sodium fluorosilicate, 3 parts lithium magnesium silicate, 0.6 parts tartaric acid, 2 parts sodium diacetate of glutamic acid, 1.5 parts methyl acrylate, 0.1 parts expansion agent, 0.3 parts sodium bentonite, and 0.3 parts polycarboxylate superplasticizer.

[0036] The preparation method of the cement-based penetrating crystalline waterproof material in this embodiment is the same as that in Embodiment 1.

[0037] Comparative Example 1 The only difference between this comparative example and Example 1 is that the raw materials for preparing the cement-based penetrating crystalline waterproofing material do not contain calcium formate, and the remaining components and preparation method are the same as in Example 1.

[0038] Comparative Example 2 The only difference between this comparative example and Example 1 is that the raw materials for preparing the cement-based penetrating crystalline waterproofing material do not contain sodium fluorosilicate or lithium magnesium silicate, and the remaining components and preparation method are the same as in Example 1.

[0039] Comparative Example 3 The only difference between this comparative example and Example 1 is that the raw materials for preparing the cement-based penetrating crystalline waterproofing material do not contain sodium diacetate of glutamate, and the remaining components and preparation method are the same as in Example 1.

[0040] Comparative Example 4 The only difference between this comparative example and Example 1 is that the raw materials for preparing the cement-based penetrating crystalline waterproofing material do not contain tartaric acid, and the remaining components and preparation method are the same as in Example 1.

[0041] Comparative Example 5 It uses commercially available cement-based penetrating crystalline waterproofing materials.

[0042] Application Example 1-3 and Comparative Application Example 1-5 The cement-based penetrating crystalline waterproofing materials prepared in Examples 1-3 and Comparative Examples 1-5 of this application were used in a commercial concrete plant. Specifically, the cement-based penetrating crystalline waterproofing materials were added to coarse and fine aggregates, and then thoroughly mixed in a concrete mixer for 2-3 minutes. After that, cement and water were added and mixed evenly.

[0043] Performance testing The performance of concrete in Examples 1-3 and Comparative Examples 1-5 using the cement-based penetrating crystalline waterproofing materials described in Examples 1-3 and Comparative Examples 1-5 was tested according to the methods specified in Chinese National Standard GB18445 "Cement-based Penetrating Crystalline Waterproofing Materials", GB / T 50082 "Standard for Test Methods of Long-term Performance and Durability of Ordinary Concrete" and GB / T 8077 "Test Method for Homogeneity of Concrete Admixtures".

[0044] The test results are shown in Tables 1 and 2.

[0045] Table 1

[0046] Table 2

[0047] The test results, as shown in Table 1, indicate that compared with the concrete in Comparative Application Examples 1-5 using the cement-based penetrating crystalline waterproofing material of Comparative Examples 1-5, the concrete in Application Examples 1-3 using the cement-based penetrating crystalline waterproofing material of Examples 1-3 of this application exhibits better crack repair ability, higher sediment strength, and resistance to high water pressure, thereby improving the overall strength of the concrete.

[0048] As shown in Table 2, compared with the dosages of 0.8%, 1.2% and 1.8% used in Comparative Example 5, similar effects can be achieved in concrete using only 0.4%, 0.8% and 1.2% dosages in Examples 1-3 of this application. This indicates that the cement-based penetrating crystalline waterproofing material of this application can achieve long-term waterproofing and corrosion resistance in concrete with a lower dosage, while also saving costs and facilitating material application.

[0049] By comparing the performance of the cement-based penetrating crystalline waterproofing materials in Application Examples 1-5 and 1-3, it can be seen that calcium formate, sodium methylsilanolate, sodium fluorosilicate, tartaric acid, and sodium glutamate diacetate all affect the repair ability and strength of concrete using the cement-based penetrating crystalline waterproofing material. The low dosage and good repair ability of the cement-based penetrating crystalline waterproofing materials in Examples 1 to 3 of this application are due to the simultaneous addition of calcium formate, sodium methylsilanolate, sodium fluorosilicate, tartaric acid, and sodium glutamate diacetate.

[0050] As shown in Table 1, the absence of one or more of calcium formate, sodium methylsilanolate, sodium fluorosilicate, tartaric acid, and sodium glutamate diacetate in Comparative Examples 1-4 negatively impacts the improvement of the repair performance, including strength, impermeability, and durability, of the cement-based penetrating crystalline waterproofing materials. For example, compared to concrete using the cement-based penetrating crystalline waterproofing material of Comparative Example 1 (which does not contain calcium formate), concrete using the cement-based penetrating crystalline waterproofing materials of Examples 1-3 (which contain calcium formate) showed a significant decrease in impermeability, strength, and electrical conductivity.

[0051] Although the embodiments disclosed in this application are as described above, the content described is merely for the purpose of understanding this application and is not intended to limit this application. Any person skilled in the art to which this application pertains may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in this application; however, the scope of patent protection of this application shall still be determined by the scope defined in the appended claims.

Claims

1. A cement-based penetrating crystalline waterproofing material, comprising the following components by weight: 20-50 parts cement, 3-8 parts calcium formate, 2-10 parts sodium methylsilyl alcohol, 1-5 parts sodium fluorosilicate, 1-3 parts lithium magnesium silicate, 0.5-0.8 parts tartaric acid, 1-5 parts sodium diacetate of glutamic acid, 0.5-2 parts methyl acrylate, 0.1-1 part expanding agent, 0.1-0.5 parts sodium bentonite, and 0.1-0.5 parts polycarboxylate superplasticizer.

2. The cement-based penetrating crystalline waterproofing material according to claim 1, wherein, The cement-based penetrating crystalline waterproofing material comprises, by weight: 20-50 parts cement, 5-8 parts calcium formate, 5-10 parts sodium methylsilyl alcohol, 2-5 parts sodium fluorosilicate, 1-3 parts lithium magnesium silicate, 0.5-0.8 parts tartaric acid, 2-5 parts sodium diacetate of glutamic acid, 0.5-2 parts methyl acrylate, 0.1-1 parts expanding agent, 0.1-0.5 parts sodium bentonite, and 0.1-0.5 parts polycarboxylate superplasticizer.

3. The cement-based penetrating crystalline waterproofing material according to claim 1, wherein, The cement-based penetrating crystalline waterproofing material is composed of the following raw materials in parts by weight: 20-50 parts cement, 3-8 parts calcium formate, 2-10 parts sodium methylsilyl alcohol, 1-5 parts sodium fluorosilicate, 1-3 parts lithium magnesium silicate, 0.5-0.8 parts tartaric acid, 1-5 parts sodium diacetate of glutamic acid, 0.5-2 parts methyl acrylate, 0.1-1 parts expanding agent, 0.1-0.5 parts sodium bentonite, and 0.1-0.5 parts polycarboxylate superplasticizer.

4. The cement-based penetrating crystalline waterproofing material according to claim 1, wherein, The cement-based penetrating crystalline waterproofing material is composed of the following raw materials in parts by weight: 20-50 parts cement, 5-8 parts calcium formate, 5-10 parts sodium methylsilyl alcohol, 2-5 parts sodium fluorosilicate, 1-3 parts lithium magnesium silicate, 0.5-0.8 parts tartaric acid, 2-5 parts sodium diacetate of glutamic acid, 0.5-2 parts methyl acrylate, 0.1-1 parts expanding agent, 0.1-0.5 parts sodium bentonite, and 0.1-0.5 parts polycarboxylate superplasticizer.

5. The cement-based penetrating crystalline waterproofing material according to any one of claims 1-4, wherein, The expanding agent is a plastic expanding agent.

6. A method for preparing a cement-based penetrating crystalline waterproofing material according to any one of claims 1-5, comprising: 1) Weigh out the following components by weight: 20-50 parts cement, 3-8 parts calcium formate, 2-10 parts sodium methylsilyl alcohol, 1-5 parts sodium fluorosilicate, 1-3 parts lithium magnesium silicate, 0.5-0.8 parts tartaric acid, 1-5 parts sodium diacetate of glutamic acid, 0.5-2 parts methyl acrylate, 0.1-1 parts expansion agent, 0.1-0.5 parts sodium bentonite, and 0.1-0.5 parts polycarboxylate superplasticizer. 2) Place cement, expansion agent, and sodium bentonite into a mixer and mix. Gradually add polycarboxylate superplasticizer during the mixing process and mix for 10-30 minutes. Then add calcium formate, sodium methylsiloxane, sodium fluorosilicate, lithium magnesium silicate, tartaric acid, sodium diacetate of glutamic acid, and methyl acrylate, and continue mixing for 20-30 minutes. The mixer speed is 60 r / min-120 r / min. 3) Grind the mixed materials into powder in a ball mill for 30-40 minutes to obtain a cement-based penetrating crystalline waterproof material.

7. The method according to claim 6, wherein, The expanding agent is a plastic expanding agent.

8. The method according to claim 6, wherein, In step 3), the mixed material is prevented from coming into contact with water during ball milling.

9. The application of the cement-based penetrating crystalline waterproofing material according to any one of claims 1-6 in the preparation of concrete.

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