Waterproof mortar concrete composite material and preparation method thereof

Abstract

This invention provides a waterproof mortar-concrete composite material and its preparation method, belonging to the technical field of waterproof mortar-concrete. The invention combines cement, fine aggregate, water-based reinforcing resin, water-resistant resin, curing agent, dispersant, and water to obtain a composite material. This composite material can be applied to floors, walls, or roofs to prepare waterproof mortar-concrete layers as needed, or it can be used to create waterproof mortar-concrete panels according to size requirements. A single application can form an excellent dense mortar-concrete layer, achieving superior water resistance and waterproofing effects. Furthermore, the participation of special resins and curing agents enhances the mechanical properties and toughening properties of the waterproof mortar-concrete, improving its crack resistance.

Description

Technical Field

[0001] This invention belongs to the field of waterproof mortar and concrete technology, specifically relating to a waterproof mortar and concrete composite material and its preparation method. Background Technology

[0002] Mortar concrete is mainly composed of sand, gravel, cement, etc., and has the advantages of low cost, simple on-site mixing, convenient use, simple and diverse molding, and can be used to prepare various types of boards and profiles. It is also highly adaptable to various substrates, making it widely applicable. Among them, waterproof mortar concrete is a common choice for waterproofing both indoors and outdoors of buildings, such as floor waterproofing, wall waterproofing, and the preparation of waterproof panel materials.

[0003] Currently, in the construction of indoor and outdoor waterproof mortar concrete, a regular mortar concrete layer is usually brushed first. After the mortar concrete layer dries and sets, a polymer waterproof layer is brushed on its surface to form a waterproof concrete layer. The main problems with this method are: (1) It requires two or more constructions to complete, which is cumbersome; (2) The bonding force between the polymer layer and the mortar concrete layer is insufficient, and the difference in deformation between the two means that when the concrete layer of the substrate cracks, the coating on the surface will crack, resulting in waterproof failure. The polymer layer cannot participate in the interior of the substrate concrete to form a toughening and crack-resistant material.

[0004] When preparing waterproof mortar panel materials, standalone mortar panels cannot be waterproofed on their own due to the voids in the mortar. They also require surface waterproof coating to achieve the desired waterproofing effect. The problems are similar to those of waterproof mortar mentioned above, such as insufficient adhesion between the waterproof coating and the mortar substrate, inability to provide toughening and crack resistance, and the need for two or more applications, which leads to complicated procedures.

[0005] With the development of the precast concrete industry, there is a growing demand in many industries, such as waterproof flooring for poolside areas and waterproof roofing panels. Therefore, it is of great significance to solve the problems existing in traditional waterproof mortar concrete and provide composite materials for waterproof mortar concrete that meet the requirements. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides a waterproof mortar-concrete composite material and its preparation method. It can form an excellent dense mortar-concrete layer with a single application, achieving superior water resistance and waterproofing effects. Furthermore, the participation of special resins and curing agents enhances the mechanical properties and toughening properties of the waterproof mortar-concrete, thereby improving its crack resistance.

[0007] One of the objectives of this invention is to provide a waterproof mortar-concrete composite material.

[0008] The second objective of this invention is to provide a method for preparing the waterproof mortar-concrete composite material.

[0009] In order to achieve the above-mentioned objectives of the present invention, the following technical solution is adopted: In a first aspect, the present invention provides a waterproof mortar-concrete composite material, comprising the following raw materials in parts by weight: 9-14 parts of water-based reinforcing resin, 5-7 parts of water-resistant resin, 0.5-0.8 parts of curing agent, 0.1-0.15 parts of dispersant, 17-20 parts of cement, 50-58 parts of fine aggregate and 10-13 parts of water; The water-based reinforcing resin is prepared from raw materials comprising the following molar amounts: 17-22 parts DMF, 10-13 parts ethylene glycol diglycidyl ether, 4-5 parts hydroxymalonic acid, 5-7 parts glutaric acid, 2-3 parts citric acid, and 3-5 parts methoxy polyethylene glycol diglycidyl ether. The raw materials also include a catalyst, tetrabutylphosphine acetate, used at 0.3-0.5% of the mass of ethylene glycol diglycidyl ether. The water-resistant resin is prepared from raw materials comprising the following parts by weight: 0.43-0.45 parts of 3-(2,3-epoxypropoxy)propylmethyldimethoxysilane and 1 part of polyether polyol. The raw materials also include toluene as solvent, used in an amount of 0.7-1 times the mass of 3-(2,3-epoxypropoxy)propylmethyldimethoxysilane; and potassium hydroxide as catalyst, used in an amount of 0.1-0.2% the mass of 3-(2,3-epoxypropoxy)propylmethyldimethoxysilane.

[0010] In some embodiments, the method for preparing the waterborne reinforced resin includes the following steps: Add the prescribed amounts of DMF, ethylene glycol diglycidyl ether, and the catalyst tetrabutylphosphine acetate to a reactor, start stirring and heat to 120-125℃. After stirring evenly, add the prescribed amounts of hydroxymalonic acid and glutaric acid, and continue to maintain the temperature for chain extension polymerization. Take a sample to test the acid value of the polymer. When the acid value of the polymer reaches below 5 mg KOH / g, add the prescribed amounts of methoxy polyethylene glycol glycidyl ether and citric acid, heat to 130-135℃, and continue the secondary chain extension and branching reaction. Take a sample to test the acid value. When the epoxy equivalent of the polymer reaches 510-550 g / mol, stop the reaction, start the vacuum system, and control the vacuum degree at -0.095 MPa to -0.098 MPa. Remove the DMF solvent under reduced pressure. When the volatile matter is below 2%, stop the reaction to obtain a water-based reinforced resin with an epoxy equivalent of 510-550 g / mol and a viscosity of 7850-8100 mPa·s at 25℃.

[0011] In some embodiments, the method for preparing the water-resistant resin includes the following steps: First, add the prescribed amounts of toluene, 3-(2,3-epoxypropoxy)propylmethyldimethoxysilane, polyether polyol, and potassium hydroxide catalyst to the polymerization reactor. Start stirring and heat to 104-107℃ for chain extension polymerization. Simultaneously collect the byproduct methanol generated during the reaction. When no obvious methanol is produced (no drop of methanol is produced within 30 seconds), the polymerization reaction is basically complete. At this point, start the vacuum system to remove the solvent toluene. Control the vacuum degree at -0.092 MPa to -0.095 MPa. When the volatile content is less than 1%, stop the reaction to obtain a water-resistant resin. The epoxy equivalent of the water-resistant resin is 715-740 g / mol, and the viscosity at 25℃ is 850-980 mPa·s.

[0012] Typical, but not limited, parts by weight of waterborne reinforced resins are, for example, 9, 10, 11, 12, 13, or 14 parts.

[0013] Typical, but not limiting, parts by weight of water-resistant resin are, for example, 5, 6, or 7 parts.

[0014] The curing agent is 1,2-propanediamine; Typical, but not limited, parts by weight of the curing agent are, for example, 0.5, 0.6, 0.7, or 0.8 parts.

[0015] The dispersant is alkylphenol polyoxyethylene ether; Typical, but not limiting, parts by mass of the dispersant are, for example, 0.1, 0.12, 0.13, 0.14, or 0.15 parts.

[0016] The cement is ordinary Portland cement; Typical, but not limited, parts by weight of cement are, for example, 17, 18, 19, or 20 parts.

[0017] The fine aggregate is natural sand; Typical but non-limiting mass fractions of fine aggregate are, for example, 50, 51, 52, 53, 54, 55, 56, 57, and 58 parts by mass.

[0018] Typical, but not limiting, mass fractions of water are, for example, 10, 11, 12, or 13 parts.

[0019] Secondly, the present invention provides a method for preparing the above-mentioned waterproof mortar-concrete composite material, comprising the following steps: A. Add the prescribed amounts of water, dispersant, water-based reinforcing resin, and water-resistant resin sequentially to an emulsification and dispersion kettle. Stir and disperse at room temperature until uniform dispersion is achieved, resulting in a homogeneous liquid without stratification. Then, add the prescribed amount of curing agent, continue stirring and dispersing at room temperature, and discharge the material to obtain an aqueous liquid dispersion for later use. B. Add the cement, fine aggregate and liquid dispersion obtained in step A to the mixer according to the formula, and mix evenly to obtain waterproof mortar concrete composite material.

[0020] In some implementations, in step (A), the stirring and dispersion treatment lasts for 0.5-1 h; then the stirring and dispersion continues at room temperature for 3-5 min.

[0021] In some embodiments, step (B) includes the following steps in sequence: low-speed stirring for 90-110s, high-speed stirring for 40-50s, stopping stirring for 100-120s, and high-speed stirring for 90-100s, wherein the speed of low-speed stirring is 10-15r / min and the speed of high-speed stirring is 25-30r / min.

[0022] This composite material can be used directly for waterproofing coatings on floors or walls, or for preparing waterproof mortar concrete panels.

[0023] Beneficial effects: This invention involves compounding cement, fine aggregate, water-based reinforcing resin, water-resistant resin, curing agent, dispersant, and water. This composite material can be applied to floors, walls, or roofs to prepare waterproof mortar concrete layers, or used to create waterproof mortar concrete panels according to size requirements. A single application of this mortar concrete can form an excellent dense layer, achieving superior waterproofing. The participation of special resins (such as water-based reinforcing resin and water-resistant resin) and curing agents not only enhances the mechanical properties and toughening properties of the waterproof mortar concrete, improving crack resistance, but also ensures that the water-based reinforcing resin has good compatibility with concrete and forms a dense waterproof layer within the mortar concrete when molded with the curing agent. The water-resistant resin, obtained by polymerizing epoxy silicone and polyether polyol, has strong hydrophobicity. During molding, it migrates to the surface of the mortar concrete due to differences in surface tension, forming a hydrophobic layer with excellent water resistance after curing with the curing agent, ultimately achieving superior water resistance and waterproofing. This product avoids the multi-step process of applying a mortar base layer followed by a waterproof coating, which is common in traditional waterproof mortar concrete. It not only improves construction efficiency but also solves the problems of poor adhesion between the waterproof coating and the mortar base layer, leading to cracking, blistering, and other issues that affect the long-term waterproofing performance. Furthermore, it provides multiple benefits to the mortar concrete from within, including strengthening, toughening, and waterproofing. Due to its ease of application, the resulting mortar concrete exhibits excellent mechanical properties, crack resistance, and waterproofing performance. This waterproof mortar concrete composite material can be used not only for waterproofing floors in bathroom renovations but also for waterproofing repairs of aging exterior walls during building repairs, or as a standalone waterproof mortar concrete panel material, demonstrating promising market prospects and application value.

[0024] The present invention has been described in detail above; however, the above embodiments are merely illustrative in nature and are not intended to limit the invention. Furthermore, this document is not limited to the foregoing prior art or the invention itself, or to any theory described in the following embodiments. Detailed Implementation

[0025] The present invention will be further described below with reference to the embodiments. It should be noted that the following embodiments are provided for illustrative purposes only and do not constitute a limitation on the scope of protection of the present invention.

[0026] Unless otherwise specified, the raw materials, reagents, and methods used in the embodiments are all conventional raw materials, reagents, and methods in the art.

[0027] The epoxy equivalent of methoxy polyethylene glycol glycidyl ether was 236 g / mol, and it was purchased from Hubei Xingyan New Material Technology Co., Ltd. Tetrabutylphosphine acetate was purchased from Kent Catalytic Materials Co., Ltd. The polyether polyol, model LE-210A, has a functionality of 2, an average molecular weight of 1000, a hydroxyl value of 107-117 mgKOH / g, and a viscosity of 140-160 mPa·s at 25℃. It was purchased from Shandong Longhua New Material Co., Ltd. The curing agent is 1,2-propanediamine, manufactured by BASF, Germany. The dispersant was alkylphenol polyoxyethylene ether, model SOPE-7, HLB value 10-11, purchased from Jiangsu Haian Petrochemical Plant; The cement is ordinary Portland cement, type PO 42.5; The fine aggregate is natural sand with a fineness modulus of 2.1.

[0028] Acid value determination: conducted in accordance with GB / T 12008.5-2010 "Plastics Polyether Polyols Part 5: Determination of Acid Value".

[0029] Determination of epoxy equivalent: GB / T 4612-2008 "Determination of epoxy equivalent in epoxy compounds for plastics"; Viscosity determination: GB / T12008.7-2010 "Plastics Polyether Polyols Part 7: Determination of Viscosity"; Determination of volatile matter: Take about 1g of sample and heat it at 135℃ for 30min. Under these conditions, the weight lost / the original weight of the sample × 100% is the volatile matter.

[0030] Preparation Example 1: Preparation of Waterborne Reinforced Resin The water-based reinforced resin comprises the following raw materials in the following molar proportions: 20 parts DMF, 12 parts ethylene glycol diglycidyl ether, 4 parts hydroxymalonic acid, 6 parts glutaric acid, 3 parts citric acid, and 4 parts methoxy polyethylene glycol glycidyl ether. The raw materials also include a catalyst, tetrabutylphosphine acetate, used at 0.4% of the mass of ethylene glycol diglycidyl ether. The preparation method of water-based reinforced resin includes the following steps: The prescribed amounts of DMF, ethylene glycol diglycidyl ether, and the catalyst tetrabutylphosphine acetate were added to a reactor. Stirring was started and the temperature was raised to 120°C. After homogenization, the prescribed amounts of hydroxymalonic acid and glutaric acid were added, and the reaction was continued at this temperature for chain extension polymerization. The acid value of the polymer was measured. When the acid value reached below 5 mg KOH / g, the prescribed amounts of methoxy polyethylene glycol glycidyl ether and citric acid were added. The temperature was raised to 130°C, and a secondary chain extension and branching reaction was carried out. The reaction was stopped when the epoxy equivalent of the polymer reached 510-550 g / mol. A vacuum system was started, and the vacuum degree was controlled at -0.098 MPa. The DMF solvent was removed under reduced pressure. The reaction was stopped when the volatile matter content was below 2%, yielding a water-based reinforced resin with an epoxy equivalent of 518 g / mol and a viscosity of 8074 mPa·s at 25°C.

[0031] Preparation Example 2: Preparation of Waterborne Reinforced Resin The water-based reinforced resin comprises the following raw materials in the following molar proportions: 17 parts DMF, 10 parts ethylene glycol diglycidyl ether, 4 parts hydroxymalonic acid, 5 parts glutaric acid, 2 parts citric acid, and 3 parts methoxy polyethylene glycol diglycidyl ether. The raw materials also include a catalyst, tetrabutylphosphine acetate, used at 0.3% of the mass of ethylene glycol diglycidyl ether. The preparation method of the waterborne reinforced resin is the same as in Preparation Example 1. The epoxy equivalent is 531 g / mol, and the viscosity at 25°C is 7831 mPa·s.

[0032] Preparation Example 3: Preparation of Waterborne Reinforced Resin The water-based reinforced resin comprises the following raw materials in the following molar proportions: 21 parts DMF, 13 parts ethylene glycol diglycidyl ether, 5 parts hydroxymalonic acid, 7 parts glutaric acid, 3 parts citric acid, and 5 parts methoxy polyethylene glycol glycidyl ether. The raw materials also include a catalyst, tetrabutylphosphine acetate, used at 0.5% of the mass of ethylene glycol diglycidyl ether. The preparation method of the waterborne reinforced resin is the same as in Preparation Example 1. The epoxy equivalent is 546 g / mol, and the viscosity at 25°C is 7957 mPa·s.

[0033] Preparation Example 4: Preparation of Water-resistant Resin The preparation method of the water-resistant resin is as follows: Toluene, 3-(2,3-epoxypropoxy)propylmethyldimethoxysilane, polyether polyol, and potassium hydroxide catalyst are added to a polymerization reactor. The mass ratio of 3-(2,3-epoxypropoxy)propylmethyldimethoxysilane to polyether polyol is 0.44:1, and the amount of toluene is 0.8 times the mass of 3-(2,3-epoxypropoxy)propylmethyldimethoxysilane. The amount of potassium hydroxide catalyst is 3-(2,3-epoxypropoxy)propylmethyldimethoxysilane. Add 0.15% of the silane mass; start stirring and heat to 105℃ for chain extension polymerization, while collecting the methanol byproduct generated during the reaction. When no obvious methanol is produced (no methanol is produced within 30 seconds), the polymerization reaction is basically complete. At this time, start the vacuum system to remove the solvent toluene, and control the vacuum degree at -0.095Mpa. When the volatile matter is less than 1%, stop the reaction to obtain a water-resistant resin product with an epoxy equivalent of 723g / mol and a viscosity of 896mPa·s at 25℃.

[0034] Example 1 A waterproof mortar-concrete composite material comprises the following raw materials in parts by weight: 10 parts of water-based reinforcing resin of Preparation Example 1, 7 parts of water-resistant resin of Preparation Example 4, 0.6 parts of curing agent, 0.12 parts of dispersant, 18 parts of cement, 53 parts of fine aggregate and 11 parts of water. A method for preparing waterproof mortar-concrete composite material includes the following steps: A. Add the prescribed amounts of water, dispersant, water-based reinforcing resin, and water-resistant resin sequentially to an emulsification and dispersion kettle. Stir and disperse at room temperature for 1 hour to form a uniform emulsion dispersion and obtain a homogeneous liquid without stratification. Then add the prescribed amount of curing agent and continue stirring and dispersing at room temperature for 5 minutes. Discharge the material to obtain an aqueous liquid dispersion for later use. B. Add the cement, fine aggregate and liquid dispersion obtained in step A to the mixer according to the formula, and mix the mixture evenly by mixing at low speed for 90-110s + high speed for 40-50s + stop mixing for 100-120s + high speed for 90-100s to obtain waterproof mortar concrete composite material.

[0035] The low-speed stirring speed is 12 r / min, and the high-speed stirring speed is 28 r / min.

[0036] Example 2 A waterproof mortar-concrete composite material comprises the following raw materials in parts by weight: 13 parts of water-based reinforcing resin of Preparation Example 2, 5 parts of water-resistant resin of Preparation Example 4, 0.8 parts of curing agent, 0.15 parts of dispersant, 20 parts of cement, 57 parts of fine aggregate and 13 parts of water. The preparation method is the same as in Example 1.

[0037] Example 3 A waterproof mortar-concrete composite material comprises the following raw materials in parts by weight: 12 parts of water-based reinforcing resin of Preparation Example 3, 5 parts of water-resistant resin of Preparation Example 4, 0.7 parts of curing agent, 0.1 parts of dispersant, 17 parts of cement, 50 parts of fine aggregate and 10 parts of water. The preparation method is the same as in Example 1.

[0038] Example 4 A waterproof mortar-concrete composite material comprises the following raw materials in parts by weight: 11 parts of water-based reinforcing resin of Preparation Example 2, 6 parts of water-resistant resin of Preparation Example 4, 0.5 parts of curing agent, 0.13 parts of dispersant, 19 parts of cement, 54 parts of fine aggregate and 12 parts of water. The preparation method is the same as in Example 1.

[0039] Comparative Example 1 Commercially available ordinary concrete mortar composite material was used. Its main components and mass parts were: 10 parts cement (ordinary Portland cement, model PO 42.5), 29 parts river sand fine aggregate, and 5.2 parts water. The composite material obtained by fully mixing the three components was used as comparative example 1.

[0040] Comparative Example 2 The mortar concrete substrate is the same as that of Comparative Example 1. Based on the sample prepared by the composite material of Comparative Example 1, a surface waterproof layer is applied to all six sides of the sample. The film thickness is controlled at 30-40μm. The waterproof coating used is a commercially available ordinary acrylic waterproof coating, model HCA121, purchased from BOE Yuhong Waterproof Technology Co., Ltd.

[0041] The composite material products prepared in the examples and comparative examples were loaded into the experimental molds for template forming. The experimental molds were placed on the vibration table and vibrated 120 times. After the vibrated test blocks were cured at room temperature with the molds on for 24 hours, the molds were removed and the test blocks were moved into a standard curing room (25±2℃, relative humidity of 75%). After curing for 28 days, the test blocks were taken out and thoroughly dried to obtain waterproof mortar concrete sample blocks. Then, the waterproof, mechanical, and crack resistance properties of the sample blocks were tested.

[0042] Test method: The flexural strength test was conducted according to GB / T 17671-2021 "Test Method for Strength of Cement Mortar (ISO Method)"; The waterproof performance test was conducted according to Part 6.1 of GB / T50082-2024 "Standard for Test Methods of Long-Term Performance and Durability of Concrete" for water penetration resistance test. The high and low temperature cycle crack resistance test was conducted according to method 4.2 of GB / T50082-2024 "Standard for Test Methods of Long-term Performance and Durability of Concrete". The freezing temperature was -30℃ and the high temperature was 30℃. The cyclic freeze-thaw test was carried out between -30℃ and 30℃ to verify its crack resistance performance. The number of cycles was 200. The surface appearance and mass loss rate were tested. Boiling in water for 24 hours is used to prepare mortar concrete sample blocks (mold size 8cm). 5cm The concrete sample (4cm) was placed in a water bath and boiled for 24 hours. Then the appearance of the concrete sample was observed, and the change in flexural strength was tested.

[0043] The test results of the waterproof mortar concrete prepared in the above embodiments and comparative examples are shown in Table 1 below.

[0044] Table 1 Performance Tests of Concrete Panels

[0045] As shown in Table 1, the waterproof mortar concrete composite material prepared using specific raw material formulations such as water-based reinforcing resin, water-resistant resin, and cement, combined with specific processes, exhibits a smooth and flat surface on the sample made from the waterproof mortar concrete prepared using the composite material of this invention. Furthermore, the flexural strength of the sample is significantly higher than that of ordinary mortar concrete substrate (Comparative Example 1), reaching over 17 MPa. In terms of waterproofing, the cured waterproof mortar concrete demonstrates excellent waterproofing performance, with internal water seepage height generally within 1 mm, indicating high surface density and good water resistance. After boiling in water for 24 hours, there is no significant change in appearance or crack formation. The flexural strength of the sample after boiling in water for 24 hours shows almost no significant decrease, with a decrease percentage of less than 3.5%. Moreover, in terms of high and low temperature cycle crack resistance, after 200 cycles, the appearance remains smooth and flat without crack formation, and the mass loss rate is generally below 0.5%.

[0046] The concrete mortar composite material used in Comparative Example 1 produced a sample with a rough surface, internal gaps, and insufficient waterproofing performance. The inner layer penetration height reached 13.8 mm, and after boiling in water for 24 hours, a small number of cracks and powdering appeared on the surface, and the flexural strength decreased by 10.45%. After 200 cycles of high and low temperatures, obvious cracks and powdering appeared on the surface, and the quality loss was significant.

[0047] Comparative Example 2, based on the sample of Comparative Example 1, was coated with a waterproof coating. The flexural strength of the product increased only slightly, reaching 7.1 MPa. The waterproof performance was significantly improved compared to the substrate (Comparative Example 1). However, after 24 hours of boiling water, surface cracks appeared, leading to water penetration, and the flexural strength decreased significantly. After 200 cycles of high and low temperatures, a small number of surface cracks appeared. The waterproof mortar concrete prepared in Comparative Example 2 requires a substrate molding process before the coating is applied, which is complex. Moreover, its overall performance, such as flexural strength, crack resistance, and boiling water resistance, is significantly lower than that of the product of this invention.

[0048] The above embodiments are merely illustrative of the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein, without departing from the spirit and substance defined by the claims of the present invention; and such modifications or substitutions are still within the scope defined by the claims of the present invention.

Claims

1. A waterproof mortar concrete composite material, characterized by, The following raw materials are included in parts by weight: 9-14 parts water-based reinforced resin, 5-7 parts water-resistant resin, 0.5-0.8 parts curing agent, 0.1-0.15 parts dispersant, 17-20 parts cement, 50-58 parts fine aggregate and 10-13 parts water; The water-based reinforcing resin is prepared from raw materials comprising the following molar amounts: 17-22 parts DMF, 10-13 parts ethylene glycol diglycidyl ether, 4-5 parts hydroxymalonic acid, 5-7 parts glutaric acid, 2-3 parts citric acid, and 3-5 parts methoxy polyethylene glycol diglycidyl ether. The raw materials also include a catalyst, tetrabutylphosphine acetate, used at 0.3-0.5% of the mass of ethylene glycol diglycidyl ether. The water-resistant resin is prepared from raw materials comprising the following parts by weight: 0.43-0.45 parts of 3-(2,3-epoxypropoxy)propylmethyldimethoxysilane and 1 part of polyether polyol. The raw materials also include toluene as a solvent and potassium hydroxide as a catalyst. The amount of toluene is 0.7-1 times the mass of 3-(2,3-epoxypropoxy)propylmethyldimethoxysilane, and the amount of potassium hydroxide is 0.1-0.2% of the mass of 3-(2,3-epoxypropoxy)propylmethyldimethoxysilane.

2. The waterproof mortar concrete composite material according to claim 1, characterized in that, The preparation method of the water-based reinforced resin includes the following steps: Add the prescribed amounts of DMF, ethylene glycol diglycidyl ether, and the catalyst tetrabutylphosphine acetate to a reactor, start stirring and heat to 120-125℃. After stirring evenly, add the prescribed amounts of hydroxymalonic acid and glutaric acid, and continue to maintain the temperature for chain extension polymerization. When the acid value of the polymer reaches below 5 mg KOH / g, add the prescribed amounts of methoxy polyethylene glycol glycidyl ether and citric acid, and heat to 130-135℃ to continue the secondary chain extension and branching reaction. When the epoxy equivalent of the polymer reaches 510-550 g / mol, stop the reaction, start the vacuum system, and control the vacuum degree at -0.095 MPa to -0.098 MPa. Remove the solvent DMF under reduced pressure. When the volatile matter is below 2%, stop the reaction to obtain a water-based reinforced resin with an epoxy equivalent of 510-550 g / mol and a viscosity of 7850-8100 mPa·s at 25℃.

3. The waterproof mortar concrete composite material according to claim 1, characterized in that, The method for preparing the water-resistant resin includes the following steps: First, add the prescribed amounts of toluene, 3-(2,3-epoxypropoxy)propylmethyldimethoxysilane, polyether polyol, and potassium hydroxide catalyst to a polymerization reactor. Start stirring and heat to 104-107℃ for chain extension polymerization. Simultaneously, collect the byproduct methanol generated during the reaction. When no obvious methanol is produced, start the vacuum system to remove the solvent toluene. Control the vacuum degree at -0.092 MPa to -0.095 MPa. Stop the reaction when the volatile content is less than 1%, and obtain a water-resistant resin. The epoxy equivalent of the water-resistant resin is 715-740 g / mol, and the viscosity at 25℃ is 850-980 mPa·s.

4. The waterproof mortar concrete composite material according to claim 1, characterized in that, The curing agent is 1,2-propanediamine.

5. The waterproof mortar concrete composite material according to claim 1, characterized in that, The dispersant is alkylphenol polyoxyethylene ether.

6. The waterproof mortar-concrete composite material according to claim 1, characterized in that, The cement is silicate cement.

7. The waterproof mortar-concrete composite material according to claim 1, characterized in that, The fine aggregate is natural sand.

8. A method for preparing a waterproof mortar-concrete composite material according to any one of claims 1-7, characterized in that, Includes the following steps: A. Add the water, dispersant, water-based reinforcing resin and water-resistant resin in the formula to the emulsification and dispersion kettle in sequence, and stir and disperse at room temperature. After uniform dispersion, a homogeneous liquid without stratification is obtained. At this time, add the curing agent in the formula, continue to stir and disperse at room temperature, and then discharge to obtain an aqueous liquid dispersion for later use. B. Add the cement, fine aggregate and liquid dispersion obtained in step A to the mixer according to the formula, and mix evenly to obtain waterproof mortar concrete composite material.

9. The preparation method according to claim 8, characterized in that, In step (A), the mixture is stirred and dispersed for 0.5-1 hour; then stirred and dispersed at room temperature for 3-5 minutes.

10. The preparation method according to claim 8, characterized in that, In step (B), the stirring includes the following steps in sequence: low-speed stirring for 90-110s, high-speed stirring for 40-50s, stopping stirring for 100-120s, and high-speed stirring for 90-100s, wherein the speed of low-speed stirring is 10-15r / min and the speed of high-speed stirring is 25-30r / min.

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