Environment-friendly permeable synergist for permeable pavement, preparation method of environment-friendly permeable synergist and permeable synergistic method

Abstract

The invention belongs to the technical field of building material auxiliaries, and relates to an environment-friendly permeable synergist for a permeable pavement, a preparation method of the environment-friendly permeable synergist and a permeable synergistic method. The permeable synergist for the permeable pavement comprises two components, a component a comprises sodium bicarbonate, a surfactant, a thickening agent and water, and a component b comprises ammonium chloride, formic acid and water. According to the water-permeable synergist, the two components are used in a matched mode, cooperation can be formed through physical action and chemical action, meanwhile, blockage is dredged, and the water-permeable synergist has excellent water permeability and high stability; when the permeable effect of the permeable pavement is reduced or fails, the permeable synergist can be directly sprayed on the permeable pavement, blockage can be quickly removed, water permeability can be recovered, the permeable effect of the permeable pavement can be effectively improved, environment-friendly materials are adopted, the pavement materials cannot be corroded, the structural strength cannot be affected, and the permeable effect of the permeable pavement can be effectively improved. And good economic benefits and social benefits are achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of building material additives. Specifically, it relates to an environment-friendly water-permeable pavement water-permeability enhancer, a preparation method thereof, and a method for enhancing the water permeability of a water-permeable pavement by using the water-permeability enhancer. Background Art

[0002] As a new type of environment-friendly and ecological road material, water-permeable pavement is applicable to sidewalks, bicycle lanes, garden landscape roads, urban squares, outdoor parking lots, etc. The application of water-permeable pavement in sponge cities is becoming more and more extensive. At present, most studies focus on improving the water permeability of the water-permeable pavement itself, such as directly adding hydrophilic substances for resin modification. There are few studies on how to repair and improve the water permeability of the blocked water-permeable pavement.

[0003] During the actual use of water-permeable pavement, with the blockage of dirt and impurities, the water penetration space will become smaller and smaller, resulting in difficult penetration or slow penetration speed of water droplets on it. In this case, it is necessary to improve the water permeability effect of the water-permeable pavement with reduced performance or failure.

[0004] At present, the main method for cleaning the blocked pores of water-permeable pavement is physical cleaning to improve the water permeability of the pavement. Physical cleaning is to dredge the water-permeable micropores of the water-permeable pavement by high-pressure air blowing or vacuum suction. However, the inventor found that the effect of dredging the water-permeable micropores by physical cleaning is not good, and it can only clean the surface impurities and is powerless for the adhered dirt.

[0005] There are also literatures mentioning the use of chemical cleaning to improve the water permeability of the pavement. Chemical cleaning is a method of cleaning the dirt on the water-permeable pavement with chemical cleaning agents or chemical reagents to dredge the micropores. However, the inventor found that due to the blockage of micropores, the penetration speed of chemical cleaning agents is slow, and the dirt and impurities cannot be thoroughly and efficiently cleaned.

[0006] Therefore, it is necessary to study how to repair and improve the water permeability of the blocked water-permeable pavement to extend the service life of the water-permeable pavement. Summary of the Invention

[0007] Technical Problem

[0008] Therefore, in view of the above problems, the present invention is made. An object of the present invention is to provide a low-cost and high-performance environment-friendly water-permeable pavement water-permeability enhancer for the blocked water-permeable pavement. The water-permeability enhancer can form a synergy through physical and chemical actions to dredge the blockage simultaneously, so as to solve a series of problems existing in the improvement of the water permeability effect of the current water-permeable pavement.

[0009] Another object of the present invention is to provide a method for preparing the above-mentioned environmentally friendly water-permeable pavement water-permeability enhancer.

[0010] Still another object of the present invention is to provide a method for enhancing the water permeability of a water-permeable pavement using the above-mentioned environmentally friendly water-permeable pavement water-permeability enhancer.

[0011] Technical solutions

[0012] The above objects and other objects can be achieved by the embodiments described below.

[0013] According to one aspect of the present invention, there is provided an environmentally friendly water-permeable pavement water-permeability enhancer, which comprises:

[0014] Component a, said component a comprising: 100 parts by weight of water, 1 to 50 parts by weight of sodium bicarbonate, 1 to 20 parts by weight of a surfactant, and 1 to 20 parts by weight of a thickener; and

[0015] Component b, said component b comprising: 100 parts by weight of water, 1 to 50 parts by weight of ammonium chloride, and 1 to 20 parts by weight of formic acid.

[0016] According to an embodiment of the present invention, the environmentally friendly water-permeable pavement water-permeability enhancer comprises:

[0017] Component a, said component a comprising: 100 parts by weight of water, 10 to 40 parts by weight of sodium bicarbonate, 5 to 20 parts by weight of a surfactant, and 5 to 10 parts by weight of a thickener; and

[0018] Component b, said component b comprising: 100 parts by weight of water, 5 to 40 parts by weight of ammonium chloride, and 3 to 16 parts by weight of formic acid.

[0019] According to an embodiment of the present invention, the water can be ordinary tap water.

[0020] According to an embodiment of the present invention, the sodium bicarbonate can be industrial sodium bicarbonate with a content of not less than 99%.

[0021] According to an embodiment of the present invention, the surfactant can be one or more selected from sodium lauryl sulfate (SDS), nonylphenol polyoxyethylene ether (TX-10), alkyl sulfonate, and petroleum sulfonate.

[0022] According to an embodiment of the present invention, the thickener can be one or more selected from starch, organic bentonite, and fumed silica; wherein, the starch can be soluble starch with a content of not less than 99%; the organic bentonite is in powder form, and its particle size is 325 mesh to 600 mesh; the fumed silica is amorphous silica, and its specific surface area is 100 to 400 m 2 / g.

[0023] According to an embodiment of the present invention, the ammonium chloride may be industrial-grade ammonium chloride with a content of not less than 99%.

[0024] According to an embodiment of the present invention, the formic acid may be industrial-grade formic acid with a content of not less than 99%.

[0025] According to another aspect of the present invention, there is provided a method for preparing the environment-friendly water-permeable road surface water-permeability enhancer, the method comprising:

[0026] Preparing component a: adding 1 to 50 parts by weight of sodium bicarbonate to 100 parts by weight of water, mixing evenly, then adding 1 to 20 parts by weight of surfactant thereto, and after mixing evenly, adding 1 to 20 parts by weight of thickener thereto, and obtaining component a after mixing evenly;

[0027] Preparing component b: adding 1 to 50 parts by weight of ammonium chloride to 100 parts by weight of water, and then adding 1 to 20 parts by weight of formic acid thereto, and obtaining component b after mixing evenly.

[0028] According to an embodiment of the present invention, the method for preparing the environment-friendly water-permeable road surface water-permeability enhancer comprises:

[0029] Preparing component a: at 15°C to 30°C, pouring 100 parts by weight of water into a dissolution container, slowly adding 1 to 50 parts by weight of sodium bicarbonate while stirring, with a stirring speed of 50 to 200 r / min, after stirring for 5 to 35 minutes, slowly adding 1 to 20 parts by weight of surfactant while stirring, continuing to stir, with a speed of 50 to 200 r / min, stirring for 30 to 65 minutes, and while stirring, slowly adding 1 to 20 parts by weight of thickener, continuing to stir, with a speed of 50 to 200 r / min, stirring for 30 to 65 minutes, and obtaining component a;

[0030] Preparing component b: at 15°C to 30°C, pouring 100 parts by weight of water into a dissolution container, slowly adding 1 to 50 parts by weight of ammonium chloride while stirring, with a stirring speed of 50 to 200 r / min, after stirring for 5 to 35 minutes, slowly adding 1 to 20 parts by weight of formic acid while stirring, continuing to stir, with a speed of 50 to 200 r / min, stirring for 10 to 20 minutes, and obtaining component b.

[0031] According to another aspect of the present invention, there is provided a method for enhancing the water permeability of a permeable pavement using the above-mentioned environment-friendly water permeability enhancer for permeable pavements. The method includes: spraying component a on the blocked permeable pavement, wetting the permeable pavement, and then spraying component b. After components a and b infiltrate the permeable pavement, it is rinsed with water, where the ratio of the spraying amount of component a to the spraying amount of component b is 1:0.8 - 1.2.

[0032] According to an embodiment of the present invention, the method for enhancing the water permeability of a permeable pavement using the above-mentioned environment-friendly water permeability enhancer for permeable pavements includes: spraying component a on the blocked permeable pavement, and then spraying component b after 10 minutes, infiltrating for 1 h - 2 h, and rinsing with water.

[0033] According to an embodiment of the present invention, in enhancing the water permeability of a permeable pavement, the total usage amount of components a and b of the environment-friendly water permeability enhancer for permeable pavements is 200 g - 500 g per square meter.

[0034] Beneficial effects

[0035] For a blocked permeable pavement with reduced or failed water permeability, the environment-friendly water permeability enhancer for permeable pavements of the present invention, where component a contains sodium bicarbonate, surfactant, thickener, and water, and component b contains ammonium chloride, formic acid, and water. When the two components are used in combination, they can form a synergy through physical and chemical actions to unclog simultaneously. This environment-friendly water permeability enhancer for permeable pavements has a low preparation cost, excellent water permeability performance, and high stability, and can effectively restore the water permeability of the permeable pavement without having a corrosive effect on the pavement material and structural performance.

[0036] Compared with the prior art, the environment-friendly water permeability enhancer for permeable pavements of the present invention also has the following advantages:

[0037] 1) The water permeability enhancer has excellent penetration and reaction capabilities. When enhancing a permeable pavement with reduced or failed water permeability, on the one hand, component a can quickly penetrate the dirt blocked in the micropores, and on the other hand, component b can quickly react with component a to quickly discharge the dirt through microbubble expansion and chemical dissolution. The permeable micropores blocked by dirt and impurities are quickly opened in the form of the cooperation of physical methods and chemical actions, restoring the permeable micropores, quickly guiding water penetration, thereby removing the blockage, restoring water permeability, and significantly enhancing the water permeability effect of the permeable pavement.

[0038] 2) The water permeability enhancer does not affect the material and structure of the permeable pavement structure.

[0039] 3) The water permeability enhancer has a high cost performance, good economic and social benefits, and strong market competitiveness.

[0040] 4) The raw materials used and the components after mixing cause little environmental pollution, and have better environmental protection than chemical cleaning methods. Detailed implementation manners

[0041] Hereinafter, the implementation manners will be described in detail to facilitate the understanding of the present invention. However, the implementation manners of the present invention can be changed in many different forms, and the scope of the present invention is not limited to the implementation manners to be described below. The implementation manners of the present invention are provided to make the present disclosure clear and complete, so as to fully explain the present invention to those of ordinary skill in the art.

[0042] As described above, the present inventors have found that for a permeable pavement that has been blocked, with reduced water permeability or has failed, there is currently no relatively effective treatment method, and there are problems such as being unable to treat all dirt, poor water permeability effect after treatment, and affecting the structural strength. Based on this, the present inventors have completed the present invention through continuous research and continuous optimization, and through experiments, it has been found that when the permeable pavement is blocked, by using the permeable pavement permeability enhancer provided by the present invention, it can quickly penetrate the dirt blocked in the micropores, and the component b can quickly react with the component a, and the dirt is quickly discharged by microbubble expansion and chemical dissolution. The permeable micropores blocked by dirt and impurities are quickly opened in the form of the cooperation of physical methods and chemical actions, the permeable micropores are restored, and water penetration is quickly guided, so as to remove the blockage, restore water permeability, and significantly improve the water permeability effect of the permeable pavement. At the same time, the permeable pavement permeability enhancer does not affect the materials and structure of the permeable pavement structure.

[0043] According to one aspect of the present invention, there is provided an environmentally friendly permeable pavement permeability enhancer, which includes:

[0044] Component a, the component a includes: 100 parts by weight of water, 1 - 50 parts by weight of sodium bicarbonate, 1 - 20 parts by weight of surfactant, and 1 - 20 parts by weight of thickener; and

[0045] Component b, the component b includes: 100 parts by weight of water, 1 - 50 parts by weight of ammonium chloride, and 1 - 20 parts by weight of formic acid.

[0046] In the permeable pavement permeability enhancer of the present invention, by using sodium bicarbonate, surfactant, thickener, ammonium chloride and formic acid as raw materials, and each component in the raw materials is within the above range, an environmentally friendly permeable pavement permeability enhancer with high stability, good permeability enhancing effect and low cost is obtained; when using this permeable pavement permeability enhancer to treat the blocked permeable pavement, not only the treatment efficiency is high but also it will not affect the structural performance.

[0047] In order to significantly improve the stability and water permeability enhancement effect of the water permeability enhancer, in one embodiment, the component a comprises: 100 parts by weight of water; 10 to 40 parts by weight of sodium bicarbonate; 5 to 20 parts by weight of a surfactant; 5 to 10 parts by weight of a thickener; the component b comprises: 100 parts by weight of water; 5 to 40 parts by weight of ammonium chloride; 3 to 16 parts by weight of formic acid.

[0048] In the present invention, sodium bicarbonate is used as a gas source, which can be rapidly decomposed after adding the component b, and the formed carbon dioxide gas can provide rapid loosening and discharging of dirt such as sludge, dust sludge, gravel, soil debris, etc., improving the water permeability performance; compared with other components, if the dosage of sodium bicarbonate is too high, the solubility of organic impurities will be reduced. In addition, the sodium bicarbonate has a purity greater than 99%. The inventor of the present invention has found that if the purity is too low, the effective components are insufficient, resulting in reduced reactivity and inability to effectively improve the water permeability performance of the permeable pavement.

[0049] The surfactant is preferably one or more of sodium lauryl sulfate (SDS), nonylphenol polyoxyethylene ether (TX-10), alkyl sulfonate and petroleum sulfonate. By using the above surfactant, when treating a blocked permeable pavement with the water permeability enhancer, it can well dissolve and peel off pollutants such as grease attached to the microporous surface of the permeable pavement, thereby effectively improving the water permeability effect of the blocked permeable pavement. In addition, the inventor of the present invention has also found that if the dosage of the surfactant is too high, the hydrophilicity of the road surface will be reduced, affecting the water permeability improvement effect.

[0050] The thickener is preferably one or more of soluble starch, organic bentonite powder and fumed silica. The above thickener can form excellent thixotropy, can cover the microporous surface layer, enable the enhancer to dissolve and react with dirt for a long time, make the dissolution and reaction more sufficient, and further improve the cleaning effect; in addition, the inventor of the present invention has also found that if the dosage of the thickener is too high, there will be problems such as difficulty in spraying and coating and reduced dredging effect.

[0051] Furthermore, the soluble starch can be starch with a content greater than 99%. The organic bentonite is in powder form, and its particle size is 325 mesh to 600 mesh. The fumed silica is amorphous silica, and its specific surface area is 100 to 400 m 2 / g. By using the above thickener, its thixotropy and stability can be further improved, ensuring that the water permeability enhancer can uniformly and stably cover the permeable pavement layer, and further enabling the water permeability enhancer to fully dissolve dirt and fully react with dirt, maximizing the cleaning effect on the blocked permeable pavement.

[0052] In addition, the water can be ordinary tap water, which can dissolve and disperse various components of the environment-friendly permeable pavement enhancer and provide the fluidity for the discharge of dirt. In addition, the inventor also found that if the water consumption is too high, there will be problems such as a decrease in the active ingredients and a decline in efficiency.

[0053] The ammonium chloride can provide acidic ions and provide an acid source for the reaction of component a. In addition, when the content is low, the acidity is insufficient, the reaction rate of component a is insufficient, and the physical expansion effect formed is limited.

[0054] In addition to providing acidic ions and providing an acid source for the reaction of component a to increase the reaction rate, the formic acid can also dissolve part of the dirt and strip the dirt from the pavement material. In addition, when the formic acid content is low, the acidity is insufficient, the reaction rate of component a is insufficient, and the physical expansion effect formed is limited.

[0055] According to another aspect of the present invention, a method for preparing the environment-friendly permeable pavement enhancer is provided, and the method includes:

[0056] Preparing component a: adding 1 to 50 parts by weight of sodium bicarbonate to 100 parts by weight of water, mixing evenly, then adding 1 to 20 parts by weight of a surfactant thereto, and after mixing evenly, adding 1 to 20 parts by weight of a thickener thereto, and obtaining component a after mixing evenly;

[0057] Preparing component b: adding 1 to 50 parts by weight of ammonium chloride to 100 parts by weight of water, and then adding 1 to 20 parts by weight of formic acid thereto, and obtaining component b after mixing evenly.

[0058] Specifically, the environment-friendly permeable pavement enhancer of the present invention can be prepared through the following steps:

[0059] Preparing component a: at 15°C to 30°C, pouring 100 parts by weight of water into a dissolution container, slowly adding 1 to 50 parts by weight of sodium bicarbonate while stirring, with a stirring speed of 50 to 200 r / min, after stirring for 5 to 35 minutes, slowly adding 1 to 20 parts by weight of a surfactant while stirring, continuing to stir, with a speed of 50 to 200 r / min, stirring for 30 to 65 minutes, and while stirring, slowly adding 1 to 20 parts by weight of a thickener, continuing to stir, with a speed of 50 to 200 r / min, stirring for 30 to 65 minutes, and obtaining component a;

[0060] Preparation of Component B: At a temperature of 15°C to 30°C, pour 100 parts by weight of water into a dissolution container. While stirring, slowly add 1 to 50 parts by weight of ammonium chloride. The stirring speed is 50 to 200 r / min. After stirring for 5 to 35 minutes, while stirring, slowly add 1 to 20 parts by weight of formic acid, and continue stirring at a speed of 50 to 200 r / min for 10 to 20 minutes to obtain Component B.

[0061] According to another aspect of the present invention, there is provided a method for enhancing the water permeability of a permeable pavement using the above-mentioned environment-friendly water permeability enhancer for permeable pavement. The method includes: spraying Component A on a blocked, water permeability-reduced or failed permeable pavement using a spray bottle or a spray gun, etc. After wetting the permeable pavement, then spray Component B. After Component A and Component B infiltrate the permeable pavement, rinse with water, wherein the ratio of the spraying amount of Component A to the spraying amount of Component B is 1:0.8 to 1.2, and preferably 1:1.

[0062] Specifically, spray Component A on a blocked, water permeability-reduced or failed permeable pavement, and then spray Component B after 10 minutes. Infiltrate for 1 h to 2 h, and then rinse with water.

[0063] Specifically, in enhancing the water permeability of a permeable pavement, the total usage amount of Component A and Component B of the environment-friendly water permeability enhancer for permeable pavement is 200 g to 500 g per square meter.

[0064] In this way, the water permeability efficiency of the permeable pavement can be greatly improved, the water permeability rate can be increased by more than one time, and even more than three times.

[0065] In the present invention, by selecting each component and compounding them into a two-component system based on a specific preparation method, the obtained environment-friendly water permeability enhancer for permeable pavement has excellent water permeability performance, high stability, and does not deteriorate during long-term storage; during application, based on the interaction and cooperation among the components, while effectively restoring the water permeability performance of the permeable pavement, it will not affect the structural performance of the pavement.

[0066] The following further details the environment-friendly water permeability enhancer for permeable pavement, its preparation method, and the water permeability enhancement method of the present invention through examples. The protection scope of the present invention is not limited to the following examples. These examples are listed only for illustrative purposes and do not limit the present invention in any way.

[0067] Example 1

[0068] Weigh the raw materials. Component A: 100 parts by weight of water, 1 part by weight of sodium bicarbonate, 1 part by weight of sodium lauryl sulfate (SDS), 1 part by weight of soluble starch; Component B: 100 parts by weight of water, 1 part by weight of ammonium chloride, 1 part by weight of formic acid.

[0069] Preparation of Component A: At about 25°C, pour water into a dissolution container, and while stirring, slowly add sodium bicarbonate. The stirring speed is 150 r / min. After stirring for 5 minutes, while stirring, slowly add a surfactant, and continue stirring at a speed of 150 r / min for 35 minutes. While stirring, slowly add a thickener, and continue stirring at a speed of 150 r / min for 35 minutes to obtain Component A of the environmentally friendly permeable pavement permeation enhancer.

[0070] Preparation of Component B: At about 25°C, pour water into a dissolution container, and while stirring, slowly add ammonium chloride. The stirring speed is 150 r / min. After stirring for 15 minutes, while stirring, slowly add formic acid, and continue stirring at a speed of 150 r / min for 15 minutes to obtain Component B of the environmentally friendly permeable pavement permeation enhancer.

[0071] Example 2

[0072] Weigh the raw materials. Component A: 100 parts by weight of water, 50 parts by weight of sodium bicarbonate, 20 parts by weight of nonylphenol polyoxyethylene ether (TX-10), 20 parts by weight of organobentonite powder; Component B: 100 parts by weight of water, 50 parts by weight of ammonium chloride, 20 parts by weight of formic acid.

[0073] Preparation of Component A: At about 30°C, pour water into a dissolution container, and while stirring, slowly add sodium bicarbonate. The stirring speed is 200 r / min. After stirring for 35 minutes, while stirring, slowly add a surfactant, and continue stirring at a speed of 200 r / min for 55 minutes. While stirring, slowly add a thickener, and continue stirring at a speed of 200 r / min for 55 minutes to obtain Component A of the environmentally friendly permeable pavement permeation enhancer.

[0074] Preparation of Component B: At about 30°C, pour water into a dissolution container, and while stirring, slowly add ammonium chloride. The stirring speed is 150 r / min. After stirring for 25 minutes, while stirring, slowly add formic acid, and continue stirring at a speed of 150 r / min for 20 minutes to obtain Component B of the environmentally friendly permeable pavement permeation enhancer.

[0075] Example 3

[0076] Weigh the raw materials. Component A: 100 parts by weight of water, 25 parts by weight of sodium bicarbonate, 10 parts by weight of petroleum sulfonate, 10 parts by weight of fumed silica; Component B: 100 parts by weight of water, 25 parts by weight of ammonium chloride; 10 parts by weight of formic acid.

[0077] Preparation of Component A: At about 15°C, pour water into a dissolution container. While stirring, slowly add sodium bicarbonate. The stirring speed is 150 r / min. After stirring for 25 minutes, while stirring, slowly add a surfactant and continue stirring at a speed of 150 r / min for 65 minutes. While stirring, slowly add a thickener and continue stirring at a speed of 150 r / min for 55 minutes to obtain Component A of the environmentally friendly permeable pavement permeation enhancer.

[0078] Preparation of Component B: At about 15°C, pour water into a dissolution container. While stirring, slowly add ammonium chloride. The stirring speed is 150 r / min. After stirring for 25 minutes, while stirring, slowly add formic acid and continue stirring at a speed of 150 r / min for 15 minutes to obtain Component B of the environmentally friendly permeable pavement permeation enhancer.

[0079] Example 4

[0080] Weigh the raw materials. Component A: 100 parts by weight of water, 50 parts by weight of sodium bicarbonate, 20 parts by weight of nonylphenol polyoxyethylene ether (TX-10), 20 parts by weight of organic bentonite powder; Component B: 100 parts by weight of water, 25 parts by weight of ammonium chloride; 10 parts by weight of formic acid.

[0081] Preparation of Component A: At about 30°C, pour water into a dissolution container. While stirring, slowly add sodium bicarbonate. The stirring speed is 150 r / min. After stirring for 30 minutes, while stirring, slowly add a surfactant and continue stirring at a speed of 150 r / min for 60 minutes. While stirring, slowly add a thickener and continue stirring at a speed of 150 r / min for 65 minutes to obtain Component A of the environmentally friendly permeable pavement permeation enhancer.

[0082] Preparation of Component B: At about 30°C, pour water into a dissolution container. While stirring, slowly add ammonium chloride. The stirring speed is 100 r / min. After stirring for 25 minutes, while stirring, slowly add formic acid and continue stirring at a speed of 100 r / min for 20 minutes to obtain Component B of the environmentally friendly permeable pavement permeation enhancer.

[0083] Stability test

[0084] The stability tests were respectively carried out on Component A and Component B of the environmentally friendly permeable pavement permeation enhancer prepared in Examples 1 to 4. The stability test mainly examines the viscosity change, sedimentation situation, color change and component content. The test results show that there are no changes in viscosity, sedimentation situation, color and component content when the storage period exceeds 24 months. Therefore, the permeation enhancer obtained in the above examples of the present invention has high stability.

[0085] Permeation test of permeable pavement

[0086] The environmentally friendly permeable pavement permeation enhancer obtained from Examples 1 to 4 was respectively used to enhance the permeability of the blocked permeable pavement. The component a was sprayed on the blocked permeable pavement, and 10 minutes later, the component b was sprayed. The dosage of component a and component b was 1:1, and the total dosage was 250 grams per square meter. After soaking for 120 minutes, it was rinsed with water; and the permeation rate of the permeable pavement after cleaning was compared with that of the permeable pavement without cleaning. The results are shown in Table 1 below.

[0087] Table 1 Permeation rate

[0088]

[0089] As can be seen from the above table, spraying the blocked permeable pavement with the environmentally friendly permeable pavement permeation enhancer obtained from Examples 1-4 of the present invention has a good effect of enhancing permeability.

[0090] Structural strength detection

[0091] The structural strength of the permeable pavement after being cleaned with the permeation enhancers of Examples 1 to 4 was respectively detected. The detection results showed that there was almost no change in the structural strength before and after cleaning. The detection results of the structural strength of the permeable pavement before and after cleaning with the permeation enhancer of Example 4 are shown in Table 2 below.

[0092] Table 2 Structural strength before and after cleaning

[0093] Compressive strength, MPa Flexural strength, MPa Wear resistance, g Before cleaning 24.63 8.2 21.2 After cleaning 24.62 8.3 21.1

[0094] In summary, the permeation enhancer obtained in the above embodiments of the present invention has excellent performance in enhancing permeability and high stability. Spraying the blocked permeable pavement with the above permeation enhancer can quickly restore the permeation performance of the permeable pavement, and while greatly improving the permeation rate, it will not affect its structural strength.

[0095] Those skilled in the art should understand that various changes and variations can be made to the environmentally friendly permeable pavement permeation enhancer, its preparation method and permeation enhancement method provided by the present invention without departing from the spirit and scope of the present invention. It should be understood that these changes and variations are within the scope of the appended claims, and the protection scope of the present invention should be determined by the content of the appended claims.

Claims

1. An environmentally friendly water-permeable pavement water permeability enhancer, which comprises: Component a, said component a comprising: 100 parts by weight of water, 1-50 parts by weight of sodium bicarbonate, 1-20 parts by weight of surfactant, and 1-20 parts by weight of thickener; and Component b, said component b comprising: 100 parts by weight of water, 1-50 parts by weight of ammonium chloride, and 1-20 parts by weight of formic acid.

2. The environmentally friendly water-permeable pavement water permeability enhancer according to claim 1, which comprises: Component a, said component a comprising: 100 parts by weight of water, 10-40 parts by weight of sodium bicarbonate, 5-20 parts by weight of surfactant, and 5-10 parts by weight of thickener; and Component b, said component b comprising: 100 parts by weight of water, 5-40 parts by weight of ammonium chloride, and 3-16 parts by weight of formic acid.

3. The environmentally friendly permeable pavement permeation enhancer according to claim 1 or 2, wherein The water is ordinary tap water.

4. The environmentally friendly permeable pavement permeation enhancer according to claim 1 or 2, characterized in that, The surfactant is one or more selected from sodium lauryl sulfate, nonylphenol polyoxyethylene ether, alkyl sulfonate, and petroleum sulfonate.

5. The environmentally friendly permeable pavement permeation enhancer according to claim 1 or 2, characterized in that The thickener is one or more selected from starch, organic bentonite and fumed silica; wherein, the starch is soluble starch with a content of not less than 99%; the organic bentonite is in powder form with a particle size of 325 mesh to 600 mesh; the fumed silica is amorphous silica with a specific surface area of 100 to 400 m 2 / g.

6. The environmentally friendly permeable pavement permeation enhancer according to claim 1 or 2, characterized in that, The sodium bicarbonate is industrial sodium bicarbonate with a content of not less than 99%; the ammonium chloride is industrial-grade ammonium chloride with a content of not less than 99%; the formic acid is industrial-grade formic acid with a content of not less than 99%.

7. A preparation method of the environmentally friendly water-permeable pavement water permeability enhancer according to claim 1, the method comprising: Preparing component a: adding 1-50 parts by weight of sodium bicarbonate to 100 parts by weight of water, mixing evenly, then adding 1-20 parts by weight of surfactant thereto, and after mixing evenly, adding 1-20 parts by weight of thickener thereto, and obtaining component a after mixing evenly; Preparing component b: adding 1-50 parts by weight of ammonium chloride to 100 parts by weight of water, and then adding 1-20 parts by weight of formic acid thereto, and obtaining component b after mixing evenly.

8. The preparation method according to claim 7, the method comprising: Preparing component a: at 15°C - 30°C, pouring 100 parts by weight of water into a dissolution container, slowly adding 1-50 parts by weight of sodium bicarbonate while stirring, the stirring speed being 50-200 r / min, after stirring for 5-35 minutes, slowly adding 1-20 parts by weight of surfactant while stirring, continuing to stir, the speed being 50-200 r / min, stirring for 30-65 minutes, slowly adding 1-20 parts by weight of thickener while stirring, continuing to stir, the speed being 50-200 r / min, stirring for 30-65 minutes, and obtaining component a; Preparing component b: at 15°C - 30°C, pouring 100 parts by weight of water into a dissolution container, slowly adding 1-50 parts by weight of ammonium chloride while stirring, the stirring speed being 50-200 r / min, after stirring for 5-35 minutes, slowly adding 1-20 parts by weight of formic acid while stirring, continuing to stir, the speed being 50-200 r / min, stirring for 10-20 minutes, and obtaining component b.

9. A method for enhancing the water permeability of a permeable pavement using the environment-friendly water permeability enhancer for permeable pavement described in claim 1, the method comprising: Spray component a on the blocked permeable pavement. After wetting the permeable pavement, then spray component b. After components a and b infiltrate the permeable pavement, rinse it with water, where the ratio of the spraying amount of component a to that of component b is 1:0.8 - 1.

2.

10. The method for enhancing water permeability of a permeable pavement according to claim 9, characterized in that, Spray component a on the blocked permeable pavement. Then spray component b after 10 minutes. Infiltrate for 1 h - 2 h and rinse with water. And in the process of enhancing the water permeability of the permeable pavement, the total usage amount of the environmentally friendly water permeability enhancer components a and b for each square meter is 200 g - 500 g.

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