Building waterproof material and construction method thereof

Abstract

The invention discloses a building waterproof material and a construction method thereof, the building waterproof material comprises, by mass, 60%-70% of a base material, 10%-15% of a microbial agent, 15%-20% of a nutrient material and 5%-10% of an additive; the base material comprises a high-molecular polymer emulsion, an anti-aging agent and an anti-ultraviolet light absorber; the microbial agent is a bacillus strain; the additives comprise a dispersing agent, a thickening agent and a preservative. The problem that a traditional building waterproof material is prone to aging and cracking is solved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a building waterproof material and a construction method thereof. Background Art

[0002] Building waterproofing is a key link in construction projects, which directly affects the service life and use function of the building. Although traditional building waterproofing materials meet the waterproofing needs to a certain extent, they have many limitations. For example, they are prone to aging and cracking due to environmental factors, leading to frequent leakage problems. Moreover, traditional materials perform poorly in terms of bonding performance, weathering resistance, radiation resistance, and the strengthening effect on substrates such as concrete. Maintenance often requires a lot of manpower and material resources, and it is difficult to fundamentally solve the hidden dangers of leakage. Summary of the invention

[0003] In order to overcome the defects of the prior art, a building waterproof material and a construction method thereof are provided to solve the problem that the traditional building waterproof material is easy to age and crack.

[0004] To achieve the above object, a building waterproof material is provided, comprising:

[0005] Taking the mass of the building waterproof material as 100%, the building waterproof material comprises 60% to 70% of a base material, 10% to 15% of a microbial agent, 15% to 20% of a nutrient material and 5% to 10% of an additive;

[0006] The base material includes a high molecular polymer emulsion, an anti-aging agent and an anti-ultraviolet absorber;

[0007] The microbial agent is Bacillus pasteurianus;

[0008] The additives include dispersants, thickeners and preservatives.

[0009] Furthermore, the base material includes 58% to 65% of high molecular polymer emulsion, 1% to 5% of anti-aging agent and 1% to 5% of anti-ultraviolet absorber.

[0010] Furthermore, the nutrient comprises a carbon source, a nitrogen source and minerals, the carbon source is glucose or sucrose, the nitrogen source is urea or amino acids, and the minerals are trace elements.

[0011] Furthermore, the nutrient comprises 5% to 8% of a carbon source, 3% to 5% of a nitrogen source and 1% to 2% of a mineral.

[0012] Furthermore, the additives include 1% to 2% of a dispersant, 2% to 4% of a thickener and 1% to 2% of a preservative.

[0013] The present invention provides a construction method of a building waterproof material, comprising the following steps:

[0014] Adding building waterproof materials into concrete according to a preset proportion and stirring evenly to obtain waterproof concrete;

[0015] The waterproof concrete is poured to form a building component.

[0016] Furthermore, the method also includes applying a building waterproof material to the surface of the building component to form a waterproof coating.

[0017] The beneficial effect of the present invention is that the building waterproof material of the present invention has the main waterproof function under normal conditions, and the microorganisms therein are in a dormant or slow growth state. At this time, the waterproof layer formed by the high molecular polymer emulsion can effectively prevent moisture from entering the building structure, and additives such as anti-aging agents and anti-ultraviolet absorbers protect the material from damage by environmental factors.

[0018] When a building structure leaks, water enters the material through the leak, carrying some oxygen and nutrients. These conditions activate the Bacillus strains in the microbial inoculants, and they begin to multiply rapidly. During the reproduction process, the microorganisms use nutrients to synthesize biopolymers, such as extracellular polysaccharides and proteins. These biopolymers have good adhesion and filling properties, and they gradually accumulate around the leak and fill the leakage channel. As the microorganisms continue to multiply and the biopolymers increase, a sealed plug is eventually formed to prevent further water leakage.

[0019] Even after the leak is repaired, the growth of microorganisms will gradually slow down as the water content decreases and nutrients are consumed, until they enter a dormant state again. At this point, the performance of the material returns to normal, and the basic waterproof material / coating continues to play the main waterproofing role.

[0020] The building waterproof material of the present invention can utilize the reproduction and repair characteristics of microorganisms to automatically repair leakage in the building structure. At the same time, it has excellent properties such as strong bonding and penetration, weathering resistance, radiation resistance, high temperature resistance, acid and alkali resistance, etc. It can effectively improve the quality of building waterproofing, extend the service life of the building, reduce maintenance costs, and is widely applicable to a variety of construction engineering scenarios. DETAILED DESCRIPTION

[0021] The present application is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention.

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below in conjunction with the embodiments.

[0023] The invention provides a building waterproof material, comprising: a base material, a microbial agent, a nutrient material and an additive.

[0024] Specifically, taking the mass of the building waterproof material as 100%, the building waterproof material includes 60% to 70% of base material, 10% to 15% of microbial agent, 15% to 20% of nutrient material and 5% to 10% of additive.

[0025] The base material includes high molecular polymer emulsion, anti-aging agent and anti-ultraviolet absorber.

[0026] Specifically, the base material includes 58% to 65% of high molecular polymer emulsion, 1% to 5% of anti-aging agent and 1% to 5% of anti-ultraviolet absorber.

[0027] In this embodiment, the anti-aging agent can be selected from hindered phenol antioxidants and amine antioxidants.

[0028] Hindered phenol antioxidant: Antioxidant 1010 (pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate).

[0029] Amine antioxidant: Antioxidant DNP (N,N'-di(β-naphthyl)p-phenylenediamine).

[0030] In this embodiment, the anti-ultraviolet absorber can be a benzotriazole ultraviolet absorber or a benzophenone ultraviolet absorber.

[0031] Benzotriazole ultraviolet absorber: UV-329 (2-(2'-hydroxy-5'-tert-octylphenyl)benzotriazole).

[0032] Benzophenone type ultraviolet absorber: UV-9 (2-hydroxy-4-methoxybenzophenone).

[0033] High molecular polymer emulsion is used as the basic component, which has good adhesion, water resistance and flexibility.

[0034] On this basis, a certain proportion of anti-aging agents and anti-ultraviolet absorbers are added to enhance its weathering resistance, radiation resistance and high temperature resistance. This part accounts for the majority of the entire material, providing a relatively stable living and activity environment for microorganisms, while ensuring that the material has basic waterproof properties under normal circumstances.

[0035] The microbial agent is Bacillus pasteurianus. Microbial agents have strong environmental adaptability and reproduction ability. In the environment of building structure leakage, they can reproduce rapidly and produce some biopolymers with bonding and filling functions through the process of cubic roots. The proportion of microbial agents in the material is moderate, which is the key factor in realizing the self-repair function of the material.

[0036] The nutrients include a carbon source, a nitrogen source and minerals. The carbon source is glucose or sucrose, the nitrogen source is urea or amino acids, and the minerals are trace elements.

[0037] The nutrients include 5% to 8% of carbon source, 3% to 5% of nitrogen source and 1% to 2% of minerals.

[0038] Nutrients are used to meet the reproduction needs of microorganisms in a leakage environment and can ensure that microorganisms can quickly start their reproduction mechanism when leakage occurs.

[0039] Additives include dispersants, thickeners and preservatives.

[0040] The additives include 1% to 2% of a dispersant, 2% to 4% of a thickener and 1% to 2% of a preservative.

[0041] In this embodiment, the dispersant is sodium polycarboxylate. The dispersant is used to ensure that the components are evenly dispersed.

[0042] In this embodiment, the thickener is hydroxypropyl methylcellulose. The thickener is used to adjust the rheological properties of the material.

[0043] In this embodiment, the preservative is sodium benzoate. Preservatives are used to prevent excessive growth of microorganisms and spoilage of materials.

[0044] The main function of the building waterproof material of the present invention is waterproof under normal conditions, and the microorganisms therein are in a dormant or slow-growing state. At this time, the waterproof layer formed by the high molecular polymer emulsion can effectively prevent moisture from entering the building structure, while additives such as anti-aging agents and anti-ultraviolet absorbers protect the material from damage by environmental factors.

[0045] When a building structure leaks, water enters the material through the leak, carrying some oxygen and nutrients. These conditions activate the Bacillus strains in the microbial inoculants, and they begin to multiply rapidly. During the reproduction process, the microorganisms use nutrients to synthesize biopolymers, such as extracellular polysaccharides and proteins. These biopolymers have good adhesion and filling properties, and they gradually accumulate around the leak and fill the leakage channel. As the microorganisms continue to multiply and the biopolymers increase, a sealed plug is eventually formed to prevent further water leakage.

[0046] Even after the leak is repaired, the growth of microorganisms will gradually slow down as the water content decreases and nutrients are consumed, until they enter a dormant state again. At this point, the performance of the material returns to normal, and the basic waterproof material / coating continues to play the main waterproofing role.

[0047] The building waterproof material of the present invention can utilize the reproduction and repair characteristics of microorganisms to automatically repair leakage in the building structure. At the same time, it has excellent properties such as strong bonding and penetration, weathering resistance, radiation resistance, high temperature resistance, acid and alkali resistance, etc. It can effectively improve the quality of building waterproofing, extend the service life of the building, reduce maintenance costs, and is widely applicable to a variety of construction engineering scenarios.

[0048] The present invention provides a construction method of a building waterproof material, comprising the following steps:

[0049] S1. Add building waterproof materials into concrete according to a preset ratio and mix well to obtain waterproof concrete.

[0050] First configure the building waterproof materials.

[0051] Specifically, the high molecular polymer emulsion is poured into a reaction kettle, a stirring device is started, the temperature is slowly raised to 40° C. to 50° C., and the stirring speed is maintained at 300 to 400 rpm. The stirring is continued for 20 to 30 minutes to fully mix the emulsion and remove the bubbles therein.

[0052] Add Bacillus strains, carbon sources (glucose, sucrose, etc.), nitrogen sources (urea, amino acids, etc.), mineral elements (calcium, magnesium, iron, etc.), dispersants (sodium polycarboxylate), thickeners (hydroxypropyl methylcellulose), preservatives (sodium benzoate) and other ingredients in sequence according to the ratio. After adding each ingredient, continue stirring for 5 to 10 minutes to ensure that the ingredients are evenly dispersed.

[0053] After all ingredients are added, continue stirring for 30 to 40 minutes to fully mix the materials. Then, lower the temperature of the reactor to room temperature, unload and package. The packaging materials should be sealed and light-proof containers to maintain the activity of microorganisms and the stability of the materials.

[0054] S2. pouring waterproof concrete to form building components.

[0055] The building waterproof material of the present invention is directly added to the mixing equipment of concrete or mortar according to a certain preset ratio. The preset ratio is adjusted according to the specific engineering requirements and material properties. The preset ratio is 5% to 10% of the total volume of concrete or mortar.

[0056] Stirring and mixing: Start the stirring device to fully stir and mix the building waterproof material of the present invention with the concrete or mortar to ensure that the microorganisms are evenly distributed inside the concrete or mortar. The stirring time can be adjusted according to the power and stirring effect of the stirring device, and it is generally recommended that the stirring time be no less than 3 minutes.

[0057] The concrete or mortar containing the building waterproof material of the present invention is poured, vibrated, smeared, etc. according to conventional construction methods. During the construction process, attention should be paid to controlling the construction quality to ensure the compactness and uniformity of the concrete or mortar structure.

[0058] S3. Applying building waterproof material to the surface of building components to form a waterproof coating.

[0059] Before construction, the base surface of the building components needs to be cleaned and dried to remove dust, oil, loose objects and other impurities to ensure that the base surface is flat and solid. For uneven bases, cement mortar and other materials can be used for leveling.

[0060] Take the microbial building waterproof material / coating out of the sealed package and stir it evenly to restore it to good fluidity and uniformity. If the material precipitates or stratifies during storage, stir or shake the packaging container appropriately.

[0061] Use brushes, rollers or spray guns to evenly apply the material on the surface of the base layer. When applying, pay attention to the consistent direction of the application to avoid missing or dripping. For areas with required thickness, multiple layers can be applied according to design requirements. The thickness of each layer should be controlled between 0.5 and 1 mm, and the directions of adjacent layers should be perpendicular to each other to ensure the uniformity and integrity of the waterproof layer. After the application is completed, it should be cured in a well-ventilated environment for no less than 7 days.

[0062] Comprehensive test of waterproof performance of the building waterproof material of the present invention:

[0063] According to the national standard GB / T16777-2019, a standard test piece was prepared, and the building waterproof material of the present invention was evenly applied to the surface of the test piece with a coating thickness of 1.5-2 mm. After 7 days of standard curing, waterproof performance index tests such as water-impermeability test, water resistance test, and tensile performance test were performed. It is required that the water-impermeability pressure should reach more than 0.3 MPa, the water-resistant immersion time should exceed 240 hours, the tensile strength should not be less than 1.2 MPa, and the elongation at break should not be less than 300%, ensuring that the waterproof performance of the material is not lower than that of traditional building waterproof materials.

[0064] Depth detection of the self-repairing performance of the building waterproof material of the present invention:

[0065] A test piece with a simulated leakage point (a circular hole with a diameter of 1 to 2 mm) is made, and the building waterproof material of the present invention is applied on the surface of the test piece with a coating thickness of 1.5 to 2 mm. After 7 days of standard maintenance, the test piece is placed in a simulated leakage environment. The change in leakage volume is continuously monitored, and the leakage point is regularly microscopically analyzed. It is expected that within 24 to 48 hours after the leakage occurs, the leakage volume should begin to decrease significantly, and the leakage point should be basically repaired within 7 to 14 days, and the leakage volume is reduced to a negligible level, so as to verify the self-healing performance of the material.

[0066] The building waterproof material of the present invention has excellent self-repairing properties. The reproduction and repair characteristics of microorganisms enable the material to automatically repair itself when a building structure leaks, thus avoiding the problem of frequent manual repairs required after leakage of traditional building waterproof materials, greatly reducing the cost and frequency of repairs and extending the service life of the building.

[0067] The building waterproof material of the present invention has excellent comprehensive performance. The material has excellent properties such as strong bonding and penetration, weathering resistance, radiation resistance, high temperature resistance, acid and alkali resistance, etc. It can maintain a good waterproof effect in various harsh environments, improve the building waterproof quality, and also enhance the protective effect of the material on the building structure.

[0068] The building waterproof material of the present invention is not only suitable for roof waterproofing projects, but can also be widely used in other construction engineering scenarios, such as basement waterproofing, pool waterproofing, exterior wall waterproofing, etc., and can be directly added to concrete and mortar for use, and has high practical value and economic value.

[0069] The microorganisms in the building waterproof material of the present invention mainly utilize moisture in the environment and nutrients in the material to grow and reproduce during the repair process, do not produce harmful chemicals, meet environmental protection requirements, and reduce pollution to the environment.

[0070] The preparation process of the building waterproof material of the present invention is relatively simple, and the construction methods are diverse. Various construction methods such as brushing, spraying, and rolling can be adopted, and it can be directly added to concrete and mortar for use. It is similar to the construction process of traditional building waterproof materials, does not require special construction equipment and technology, is easy to promote and apply, and reduces construction difficulty and cost.

[0071] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A building waterproof material, characterized in that: Taking the mass of the building waterproof material as 100%, the building waterproof material comprises 60% to 70% of a base material, 10% to 15% of a microbial agent, 15% to 20% of a nutrient material and 5% to 10% of an additive; The base material includes a high molecular polymer emulsion, an anti-aging agent and an anti-ultraviolet absorber; The microbial agent is Bacillus pasteurianus; The additives include dispersants, thickeners and preservatives.

2. The building waterproof material according to claim 1, characterized in that: The base material comprises 58% to 65% of high molecular polymer emulsion, 1% to 5% of anti-aging agent and 1% to 5% of anti-ultraviolet absorber.

3. The building waterproof material according to claim 1, characterized in that: The nutrients include a carbon source, a nitrogen source and minerals, wherein the carbon source is glucose or sucrose, the nitrogen source is urea or amino acids, and the minerals are trace elements.

4. The building waterproof material according to claim 3, characterized in that: The nutrient material comprises 5% to 8% of a carbon source, 3% to 5% of a nitrogen source and 1% to 2% of minerals.

5. The building waterproof material according to claim 1, characterized in that: The additives include 1% to 2% of a dispersant, 2% to 4% of a thickener and 1% to 2% of a preservative.

6. A construction method of a building waterproof material as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: Adding building waterproof materials into concrete according to a preset proportion and stirring evenly to obtain waterproof concrete; The waterproof concrete is poured to form a building component.

7. The construction method according to claim 6, characterized in that: The method also includes applying a building waterproof material to the surface of the building component to form a waterproof coating.