Cement-based polymer permeable crystalline waterproof coating and construction method thereof

Abstract

The present application belongs to the technical field of concrete waterproof coating, and particularly relates to a cement-based polymer penetrating crystalline waterproof coating and a construction method thereof. The waterproof coating comprises component one and component two. The component one comprises 50-60 parts by weight of Portland cement, 20-30 parts by weight of quartz sand, 2-10 parts by weight of silica fume, 2-8 parts by weight of sodium silicate, 0.3-5 parts by weight of tartaric acid, 1-5 parts by weight of calcium formate, 0.1-0.3 parts by weight of water reducing agent, 0.5-1 parts by weight of dispersible latex powder and 0.2-0.4 parts by weight of cellulose ether. The component two comprises paraffin wax. During construction, the component two is first sprayed on the surface of the concrete base, and then the slurry formed by mixing the component one with water is coated on the surface of the concrete base sprayed with the component two.

Description

A cement-based polymer penetrating crystalline waterproof coating and its application method Technical Field

[0001] This invention belongs to the field of concrete waterproof coating technology, and specifically relates to a cement-based polymer penetrating crystalline waterproof coating and its construction method. Background Technology

[0002] Concrete has advantages such as high strength and good durability in practical applications, and is widely used in construction, bridges, roads, water conservancy and hydropower, underground engineering, mine tunnels and other fields. However, concrete contains pores, and the calcium hydroxide produced after cement hydration and the ettringite produced after cement and gypsum hydration cause expansion and contraction, resulting in cracks. These pores and cracks can cause water seepage and dampness, thus affecting the durability of concrete structures and shortening their lifespan.

[0003] After being mixed with water, cement-based polymer-based penetrating waterproofing materials exhibit a reaction between active substances and cement components, generating various insoluble crystals that block water seepage. Simultaneously, the active substances penetrate the concrete and react with calcium hydroxide within it, forming crystals that fill the concrete and seal internal pores and cracks, thus preventing water transport, reducing permeability, and improving waterproofing and seepage resistance. However, since the active substances spontaneously penetrate and diffuse into the concrete, the degree of penetration is limited; that is, the amount of active substances ultimately reaching the pores and cracks within the concrete is limited, resulting in a relatively small improvement in the concrete's waterproofing and seepage resistance. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a cement-based polymer penetrating crystalline waterproof coating, comprising component one and component two. Component one comprises 50-60 parts by weight of silicate cement, 20-30 parts by weight of quartz sand, 2-10 parts by weight of silica fume, 2-8 parts by weight of sodium silicate, 0.3-5 parts by weight of tartaric acid, 1-5 parts by weight of calcium formate, 0.1-0.3 parts by weight of water-reducing agent, 0.5-1 parts by weight of dispersible latex powder, and 0.2-0.4 parts by weight of cellulose ether. Component two comprises paraffin wax.

[0005] As a preferred embodiment, component one comprises 54 parts by weight of silicate cement, 27 parts by weight of quartz sand, 8 parts by weight of silica fume, 4 parts by weight of sodium silicate, 0.3 parts by weight of tartaric acid, 3 parts by weight of calcium formate, 0.3 parts by weight of water-reducing agent, 1 part by weight of dispersible latex powder, and 0.3 parts by weight of cellulose ether.

[0006] Preferably, the dispersible latex powder is one or a combination of styrene-acrylic rubber powder, styrene-butadiene rubber powder, and VAE rubber powder.

[0007] Preferably, the cellulose ether is a nonionic water-soluble cellulose ether, such as hydroxypropyl methylcellulose ether or hydroxyethyl cellulose ether.

[0008] Preferably, the water-reducing agent is a polycarboxylate water-reducing agent or a lignin sulfonate water-reducing agent.

[0009] This invention also provides a method for applying the above-mentioned cement-based polymer penetrating crystalline waterproof coating:

[0010] (1) After fully melting the paraffin under heating conditions, apply 10-25 g / m³ of paraffin wax. 2 After the coating is evenly sprayed onto the concrete substrate surface, it is left to cool until the paraffin sprayed onto the concrete substrate surface has fully cooled and solidified.

[0011] (2) Under stirring conditions, mix component one with water thoroughly to form a slurry, and apply the slurry evenly to the paraffin surface of the concrete substrate in step (1).

[0012] As a preferred option, the surface of the concrete substrate is first subjected to hydrophilic modification treatment before step (1).

[0013] As a preferred option, the hydrophilic modification treatment involves fully dispersing a substance suitable for use as a water-reducing agent in water to prepare a hydrophilic modification solution, and then dissolving the hydrophilic modification solution at a concentration of 20–60 g / m³. 2 Apply the coating evenly to the concrete substrate surface and allow it to stand until the concrete substrate surface is dry.

[0014] The beneficial effects of this invention are as follows: In the cement-based polymer penetrating crystalline waterproof coating, cement serves as an inorganic film-forming substance, sodium silicate serves as an active precipitating component, tartaric acid serves as a complexing agent, calcium formate serves as a calcium ion compensator, silica fume serves as an inorganic filler, and the water-reducing agent is adsorbed on the surface of cement particles, reducing the amount of water used and increasing its fluidity. The incorporation of polymer is beneficial to the flexibility and adhesion of the coating, and can also act as a hydrophobic film to block water penetration.

[0015] During construction, a layer of paraffin wax is sprayed onto the surface of the concrete substrate. The molten paraffin wax forms a continuous solid membrane on the substrate surface upon cooling. In the initial stage, it significantly blocks the penetration of the active substance (sodium silicate) aqueous solution in the slurry composed of component one of the paraffin film and water into the concrete substrate.

[0016] However, as the cement hydration reaction in the slurry proceeds, the released heat of reaction melts the paraffin film, reopening the penetration channels into the concrete matrix. More importantly, the temperature of the active substance (sodium silicate) aqueous solution in the slurry also increases significantly due to this heat of reaction. Therefore, the active substance solution penetrates into the concrete matrix more smoothly, ultimately allowing more active substances to penetrate into the interior of the concrete matrix (either reacting with calcium in the concrete matrix or with calcium ions carried in the active substance solution, both generating crystals that seal and repair the pores and cracks inside the concrete matrix), further improving the waterproofing effect of the matrix.

[0017] In summary, although the design of this scheme initially prevented the active substance solution from effectively penetrating into the concrete matrix by being blocked by the solid paraffin film, the ultimate goal was to allow the active substance solution to fully absorb the heat of reaction in the slurry and heat up to a certain level, thereby greatly enhancing its penetration ability and ultimately allowing it to penetrate more fully into the concrete matrix. After the crystallization reaction, the waterproof effect of the concrete matrix was significantly improved.

[0018] Of course, it's easy to understand that the active substances cannot be trapped in the slurry layer for too long. This is because the active substances in the slurry also react with calcium ions (including calcium ions generated during cement hydration and calcium ions in calcium formate) to form solid crystals. (Solid crystals are much more difficult to penetrate into concrete than active substances, so the formed crystals mostly remain in the slurry layer.) If the active substances remain in the slurry for too long, too much of them will be reacted and consumed within the slurry layer, ultimately reducing the amount of active substances that can penetrate into the concrete matrix. Therefore, paraffin wax, which melts when heated to a certain temperature within the slurry, is selected to allow the active substance solution in the slurry to penetrate into the concrete at the appropriate time.

[0019] Considering the hydrophobicity of paraffin on the concrete substrate surface, the concrete substrate surface is specially modified to a certain extent (by utilizing the fact that water-reducing agents can be stably adsorbed on the concrete cement surface, these substances are adsorbed on the concrete substrate surface, and the hydrophilicity of the substrate surface is improved based on their hydrophilic groups, see the Examples section for details), in order to offset or reduce the adverse effects of paraffin hydrophobicity on the penetration of active substance solutions. Detailed Implementation

[0020] In the following examples, all paraffin waxes used are low-melting-point paraffin waxes with a melting point of 40°C (Yangzhou Tianshi New Material Technology Co., Ltd., hereinafter the same).

[0021] Example 1

[0022] Cement-based polymer penetrating crystalline waterproof coating consists of component one and component two:

[0023] Component 1: 54 parts by weight of silicate cement (ordinary Portland cement, hereinafter the same), 27 parts by weight of quartz sand (100 mesh, hereinafter the same), 8 parts by weight of silica fume, 4 parts by weight of sodium silicate, 0.3 parts by weight of tartaric acid, 3 parts by weight of calcium formate, 0.3 parts by weight of water-reducing agent calcium lignosulfonate, 1 part by weight of dispersible VAE powder (Tianjin Oulais, hereinafter the same), 0.3 parts by weight of hydroxyethyl cellulose ether.

[0024] In preparing component one, first pour 27 parts by weight of silicate cement into a dry powder mixer, then add 14 parts by weight of quartz sand, 4 parts by weight of silica fume, 2 parts by weight of sodium silicate, 0.15 parts by weight of tartaric acid, and 1.5 parts by weight of calcium formate. Then, mechanically stir at 35°C for 3 minutes at a speed of 140 r / min. Next, add 0.15 parts by weight of water-reducing agent calcium lignosulfonate and 0.5 parts by weight of dispersible VAE powder. After adding 0.15 parts by weight of hydroxyethyl cellulose ether, mechanically stir at 35°C for 10 minutes at a speed of 140 r / min. Finally, add the remaining parts by weight of silicate cement, quartz sand, silica fume, sodium silicate, tartaric acid, calcium formate, water-reducing agent calcium lignosulfonate, dispersible VAE powder, and hydroxyethyl cellulose ether. Then, mechanically stir at 35°C at 140 r / min for 5 minutes, and then mechanically stir at 35°C at 285 r / min for 5 minutes.

[0025] Component 2: Paraffin wax.

[0026] (1) After fully melting component two paraffin at 80°C, according to 20g / m 2 The coating amount is evenly sprayed onto the back surface of the concrete specimen (the back surface is kept horizontal and facing upwards), and left to stand at room temperature (25℃, the same below) for 1 hour to allow the paraffin on the surface of the concrete specimen to fully cool and solidify.

[0027] (2) While the electric mixer is in stirring mode, component one of this embodiment is slowly added to the water at a mass ratio of 3:1. After the addition is complete, continue stirring until the mixture is fully formed into a slurry. The resulting slurry is prepared according to a concentration of 2000 g / m³. 2 The amount of slurry is evenly applied to the paraffin surface of the concrete specimen in step (1), and then the concrete specimen coated with slurry is placed in a standard curing room at 20°C and 95% humidity for 28 days.

[0028] Example 2

[0029] Before spraying component two paraffin onto the surface of the concrete specimen, the relevant surfaces of the concrete specimen were first subjected to hydrophilic modification treatment. The remaining components and operations were the same as in Example 1.

[0030] Cement-based polymer penetrating crystalline waterproof coating consists of component one and component two:

[0031] Component 1: 54 parts by weight of silicate cement, 27 parts by weight of quartz sand, 8 parts by weight of silica fume, 4 parts by weight of sodium silicate, 0.3 parts by weight of tartaric acid, 3 parts by weight of calcium formate, 0.3 parts by weight of water-reducing agent calcium lignosulfonate, 1 part by weight of dispersible VAE powder, and 0.3 parts by weight of hydroxyethyl cellulose ether.

[0032] In preparing component one, first pour 27 parts by weight of silicate cement into a dry powder mixer, then add 14 parts by weight of quartz sand, 4 parts by weight of silica fume, 2 parts by weight of sodium silicate, 0.15 parts by weight of tartaric acid, and 1.5 parts by weight of calcium formate. Then, mechanically stir at 35°C for 3 minutes at a speed of 140 r / min. Next, add 0.15 parts by weight of water-reducing agent calcium lignosulfonate and 0.5 parts by weight of dispersible VAE powder. After adding 0.15 parts by weight of hydroxyethyl cellulose ether, mechanically stir at 35°C for 10 minutes at a speed of 140 r / min. Finally, add the remaining parts by weight of silicate cement, quartz sand, silica fume, sodium silicate, tartaric acid, calcium formate, water-reducing agent calcium lignosulfonate, dispersible VAE powder, and hydroxyethyl cellulose ether. Then, mechanically stir at 35°C at 140 r / min for 5 minutes, and then mechanically stir at 35°C at 285 r / min for 5 minutes.

[0033] Component 2: Paraffin wax.

[0034] (1) Calcium lignosulfonate, which can be used as a water-reducing agent, is fully dispersed in water at a mass concentration of 10% to form a hydrophilic modification solution. The resulting hydrophilic modification solution is then dissolved at a concentration of 50 g / m³. 2 The amount of coating is evenly sprayed onto the back surface of the concrete specimen (the back surface is kept horizontal and facing upwards), and left to stand at room temperature for 2 hours until the surface of the concrete specimen is basically dry.

[0035] (2) After fully melting component two paraffin at 80°C, according to 20g / m 2 The amount of coating is evenly sprayed onto the hydrophilic modified surface of the concrete specimen in step (1), and left to stand at room temperature for 1 hour to allow the paraffin on the surface of the concrete specimen to cool and solidify fully.

[0036] (3) While the electric mixer is in stirring mode, slowly add component one of this embodiment to the water. The mass ratio of component one to water is 3:1. After adding all the components, continue stirring until fully mixed to form a slurry. The resulting slurry is prepared according to a ratio of 2000 g / m³. 2 The amount of slurry is evenly applied to the paraffin surface of the concrete specimen in step (2), and then the concrete specimen coated with slurry is placed in a standard curing room at 20°C and 95% humidity for 28 days.

[0037] Example 3

[0038] Cement-based polymer penetrating crystalline waterproof coating consists of component one and component two:

[0039] Component 1: 50 parts by weight of silicate cement, 30 parts by weight of quartz sand, 5 parts by weight of silica fume, 5 parts by weight of sodium silicate, 1 part by weight of tartaric acid, 2 parts by weight of calcium formate, 0.3 parts by weight of water-reducing agent calcium lignosulfonate, 0.5 parts by weight of dispersible VAE powder, and 0.4 parts by weight of hydroxyethyl cellulose ether.

[0040] When preparing the mixture for component one, first pour 25 parts by weight of silicate cement into a dry powder mixer, then add 15 parts by weight of quartz sand, 2.5 parts by weight of silica fume, 2.5 parts by weight of sodium silicate, 0.5 parts by weight of tartaric acid, and 1 part by weight of calcium formate. Then, mechanically stir at 25°C for 10 minutes at a speed of 120 r / min. Next, add 0.15 parts by weight of water-reducing agent calcium lignosulfonate, 0.25 parts by weight of dispersible VAE powder, and 0.2 parts by weight of hydroxyethyl cellulose ether. Mechanically stir at 25°C for 10 minutes at a speed of 160 r / min. Finally, add the remaining parts by weight of silicate cement, quartz sand, silica fume, sodium silicate, tartaric acid, calcium formate, water-reducing agent calcium lignosulfonate, dispersible VAE powder, and hydroxyethyl cellulose ether. Mechanically stir at 25°C and 120 r / min for 20 minutes.

[0041] Component 2: Paraffin wax.

[0042] (1) After fully melting component two paraffin at 90°C, according to 20g / m 2 The coating is evenly sprayed onto the back surface of the concrete specimen (which is kept horizontal and facing upwards), and left to stand at room temperature for 1.5 hours to allow the paraffin on the surface of the concrete specimen to fully cool and solidify.

[0043] (2) While the electric mixer is in stirring mode, component one of this embodiment is slowly added to water at a mass ratio of 3.2:1. After the addition is complete, continue stirring until fully mixed to form a slurry. The resulting slurry is then prepared according to a ratio of 1800 g / m³. 2 The amount of slurry is evenly applied to the paraffin surface of the concrete specimen in step (1), and then the concrete specimen coated with slurry is placed in a standard curing room at 20°C and 95% humidity for 28 days.

[0044] Comparative Example 1

[0045] Before applying the cement-based polymer penetrating crystalline waterproof coating, no paraffin was coated on the surface of the concrete specimen. The remaining components and procedures were the same as in Example 1.

[0046] Cement-based polymer penetrating crystalline waterproof coating consists of only one component:

[0047] Component 1: 54 parts by weight of silicate cement, 27 parts by weight of quartz sand, 8 parts by weight of silica fume, 4 parts by weight of sodium silicate, 0.3 parts by weight of tartaric acid, 3 parts by weight of calcium formate, 0.3 parts by weight of water-reducing agent calcium lignosulfonate, 1 part by weight of dispersible VAE powder, and 0.3 parts by weight of hydroxyethyl cellulose ether.

[0048] In preparing component one, first pour 27 parts by weight of silicate cement into a dry powder mixer, then add 14 parts by weight of quartz sand, 4 parts by weight of silica fume, 2 parts by weight of sodium silicate, 0.15 parts by weight of tartaric acid, and 1.5 parts by weight of calcium formate. Then, mechanically stir at 35°C for 3 minutes at a speed of 140 r / min. Next, add 0.15 parts by weight of water-reducing agent calcium lignosulfonate and 0.5 parts by weight of dispersible VAE powder. After adding 0.15 parts by weight of hydroxyethyl cellulose ether, mechanically stir at 35°C for 10 minutes at a speed of 140 r / min. Finally, add the remaining parts by weight of silicate cement, quartz sand, silica fume, sodium silicate, tartaric acid, calcium formate, water-reducing agent calcium lignosulfonate, dispersible VAE powder, and hydroxyethyl cellulose ether. Then, mechanically stir at 35°C at 140 r / min for 5 minutes, and then mechanically stir at 35°C at 285 r / min for 5 minutes.

[0049] While the electric mixer is in operation, the waterproof coating of this embodiment is slowly added to the water at a mass ratio of 3:1. After the water is added, continue mixing until fully incorporated to form a slurry. The resulting slurry is prepared at a concentration of 2000 g / m³. 2 Apply the slurry evenly to the back surface of the concrete specimen (keeping the back surface horizontal and facing upwards), and then place the concrete specimen coated with the slurry in a standard curing room at 20°C and 95% humidity for 28 days.

[0050] Comparative Example 2

[0051] Component 1 does not contain calcium formate; all other components and procedures are the same as in Comparative Example 1.

[0052] Cement-based polymer penetrating crystalline waterproof coating consists of only one component:

[0053] Component 1: 54 parts by weight of silicate cement, 27 parts by weight of quartz sand, 8 parts by weight of silica fume, 4 parts by weight of sodium silicate, 0.3 parts by weight of tartaric acid, 0.3 parts by weight of water-reducing agent calcium lignosulfonate, 1 part by weight of dispersible VAE powder, and 0.3 parts by weight of hydroxyethyl cellulose ether.

[0054] When preparing the mixture for component one, first pour 27 parts by weight of silicate cement into a dry powder mixer, then add 14 parts by weight of quartz sand, 4 parts by weight of silica fume, 2 parts by weight of sodium silicate, and 0.15 parts by weight of tartaric acid. Then, mechanically stir at 35°C for 3 minutes at a speed of 140 r / min. Next, add 0.15 parts by weight of water-reducing agent calcium lignosulfonate, 0.5 parts by weight of dispersible VAE powder, and 0.15 parts by weight of hydroxyethyl cellulose ether. Then, mechanically stir at 35°C for 10 minutes at a speed of 140 r / min. Finally, add the remaining parts by weight of silicate cement, quartz sand, silica fume, sodium silicate, tartaric acid, water-reducing agent calcium lignosulfonate, dispersible VAE powder, and hydroxyethyl cellulose ether. Then, mechanically stir at 35°C at 140 r / min for 5 minutes, and then mechanically stir at 35°C at 285 r / min for 5 minutes.

[0055] While the electric mixer is in operation, the waterproof coating of this embodiment is slowly added to the water at a mass ratio of 3:1. After the water is added, continue mixing until fully incorporated to form a slurry. The resulting slurry is prepared at a concentration of 2000 g / m³. 2 Apply the slurry evenly to the back surface of the concrete specimen (keeping the back surface horizontal and facing upwards), and then place the concrete specimen coated with the slurry in a standard curing room at 20°C and 95% humidity for 28 days.

[0056] The concrete specimens treated in the above embodiments and comparative embodiments were subjected to relevant performance tests. The testing procedures and the specifications of the concrete specimens required for each test item were all performed in accordance with GB18445-2012 "Cement-based Penetrating Crystalline Waterproofing Materials". The test results are shown in Table 1.

[0057] Table 1

[0058]

[0059] In Table 1, the "permeability pressure ratio of the uncoated concrete" is: (the permeability pressure retained by the concrete specimen after removing the waterproof coating layer formed on the back surface of the concrete specimen in the above embodiments and comparative embodiments) ÷ (the original permeability pressure of the concrete specimen before the waterproof coating treatment).

[0060] The "permeability pressure ratio of coated concrete" is: (permeability pressure of the concrete specimen after the formation of a waterproof coating layer on the back surface of the concrete specimen in the above embodiments and comparative embodiments) ÷ (original permeability pressure of the concrete specimen before the waterproof coating treatment).

[0061] In Table 1, compared to Example 1 where there is no solid paraffin film, when the waterproof coating slurry is applied to the concrete substrate, the solution in the slurry initially penetrates into the concrete. However, at this point, the solution temperature is low, limiting the degree of penetration. Furthermore, the active substances that penetrate react to form crystals, which partially seal the pores and cracks within the concrete, further hindering and reducing the subsequent penetration of these active substances. In contrast, Example 1 involves heating the solution in the slurry layer to a certain temperature before it begins to penetrate the concrete. This results in a stronger and more complete penetration, effectively offsetting the adverse effects of the hydrophobic paraffin on penetration and ultimately generating more and denser crystals within the pores and cracks of the concrete.

[0062] Therefore, in Table 1, the seepage resistance pressure of Example 1 is improved compared to Comparative Example 1, especially the significant increase in "seepage resistance pressure of uncoated concrete." This indicates that the active material in Example 1 penetrates more thoroughly into the concrete matrix, resulting in a more compact filling of pores and cracks within the concrete after crystal formation. Furthermore, the improved overall seepage resistance effect (i.e., seepage resistance pressure of coated concrete) of Example 1 further demonstrates that the active material penetrating into the concrete contributes more to the seepage resistance effect than the active material remaining in the waterproof coating on the concrete matrix surface. In addition, the bonding strength of the waterproof coating in Example 1 is also greater than that in Comparative Example 1. Since the bonding strength of the coating depends on the degree of penetration into the matrix when other conditions remain unchanged, this also indicates that the treatment method in Example 1 is more conducive to the penetration of the waterproof coating slurry into the concrete.

[0063] Compared with Example 1, Example 2 shows that by first performing hydrophilic modification treatment on the surface of the concrete substrate before spraying the paraffin film, the adverse effects of the hydrophobicity of paraffin on the penetration of the active substance solution can be offset or reduced to some extent.

[0064] In addition, since calcium formate was not added in Comparative Example 2, the number of active calcium ions in the slurry solution was significantly reduced compared to Comparative Example 1. As a result, the number of crystals generated by the reaction with active substances that remain in the waterproof coating or penetrate into the concrete matrix was also reduced, leading to a decrease in the degree of sealing of pores and cracks and a decrease in the anti-seepage effect.

Claims

1. A cement-based polymer penetrating crystalline waterproof coating, characterized in that: The waterproof coating comprises component one and component two. Component one comprises 50-60 parts by weight of silicate cement, 20-30 parts by weight of quartz sand, 2-10 parts by weight of silica fume, 2-8 parts by weight of sodium silicate, 0.3-5 parts by weight of tartaric acid, 1-5 parts by weight of calcium formate, 0.1-0.3 parts by weight of water-reducing agent, 0.5-1 parts by weight of dispersible latex powder, and 0.2-0.4 parts by weight of cellulose ether. Component two comprises low-melting-point paraffin wax with a melting point of 40°C. The construction method of the cement-based polymer penetrating crystalline waterproof coating is as follows: (1) First, the surface of the concrete substrate is subjected to hydrophilic modification treatment. The hydrophilic modification treatment is to fully disperse the substance that can be used as a water-reducing agent in water as a hydrophilic modification solution, and to mix the hydrophilic modification solution at a concentration of 20-60 g / m 2 (1) Apply the coating evenly to the surface of the concrete substrate and let it stand until the surface of the concrete substrate is dry; (2) After the paraffin is fully melted under heating conditions, apply it at a rate of 10-25 g / m 2 After the amount of coating is evenly sprayed onto the surface of the concrete substrate, it is allowed to stand and cool until the paraffin on the surface of the concrete substrate is fully cooled and solidified; (3) Under stirring, the first component is mixed with water to form a slurry, and the slurry is evenly coated onto the surface of the paraffin on the surface of the concrete substrate in step (2).

2. The cement-based polymer penetrating crystalline waterproof coating as described in claim 1, characterized in that: Component one comprises 54 parts by weight of silicate cement, 27 parts by weight of quartz sand, 8 parts by weight of silica fume, 4 parts by weight of sodium silicate, 0.3 parts by weight of tartaric acid, 3 parts by weight of calcium formate, 0.3 parts by weight of water-reducing agent, 1 part by weight of dispersible latex powder, and 0.3 parts by weight of cellulose ether.

3. The cement-based polymer penetrating crystalline waterproof coating as described in claim 1, characterized in that: The dispersible latex powder is one or a combination of several of styrene-acrylic rubber powder, styrene-butadiene rubber powder, and VAE rubber powder.

4. The cement-based polymer penetrating crystalline waterproof coating as described in claim 1, characterized in that: The cellulose ether is a nonionic, water-soluble cellulose ether.

5. The cement-based polymer penetrating crystalline waterproof coating as described in claim 1, characterized in that: The water-reducing agent is a polycarboxylate water-reducing agent or a lignin sulfonate water-reducing agent.

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