Grouting plugging liquid and use method thereof

Abstract

The invention belongs to the technical field of building materials, and particularly relates to grouting plugging liquid and a using method thereof. The acrylate grouting plugging liquid is adopted, and the plugging principle of the acrylate grouting plugging liquid mainly depends on the characteristics of high fluidity and rapid solidification of the acrylate grouting plugging liquid. In the grouting process, the acrylate grouting plugging liquid can rapidly permeate into fine cracks of a building structure and then is rapidly solidified through a chemical reaction, and a firm sealing layer is formed. In the process, leakage can be effectively blocked, the overall strength of the structure can be enhanced, and the later leakage risk is avoided. Besides, the plugging liquid provided by the invention is a water-based system, is environment-friendly and non-toxic, and a product and a cured product are completely non-combustible before curing, so that the plugging liquid does not cause harmful influence on human bodies, organisms and the environment at all.

Description

Technical Field

[0001] The invention belongs to the technical field of building materials, and in particular relates to a grouting plugging liquid and a use method thereof. Background Art

[0002] In recent years, the rapid development of various types of rail transit, road traffic, tunnel subways, and construction industries in my country has entered a stage of rapid innovation. Multi-layer structures above ground and underground are constantly developing and facing various needs for waterproofing and leak plugging.

[0003] The traditional grouting material used in soil reinforcement and tunnel engineering is mainly acrylamide. However, due to its certain toxicity, acrylamide is restricted for use in engineering fields closely related to human life and production, such as water sources. This requires a new type of grouting material with low toxicity or even non-toxicity to replace it. Summary of the invention

[0004] The object of the present invention is to provide a grouting plugging fluid and a use method thereof. The grouting plugging fluid provided by the present invention is safe and non-toxic and has an excellent plugging effect.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] The present invention provides a grouting plugging liquid, comprising independently packaged component A and component B;

[0007] The component A comprises a first main agent and an accelerator which are packaged separately;

[0008] The first main agent includes sodium acrylate, magnesium acrylate, p-hydroxyanisole, sodium citrate and water;

[0009] The accelerator includes triethanolamine, tetrahydroxyethylethylenediamine, polyethylene glycol, diethylene glycol and water;

[0010] The component B includes a second main agent and a curing agent which are packaged separately;

[0011] The second main agent includes sodium acrylate, magnesium acrylate, p-hydroxyanisole, sodium citrate and water;

[0012] The mass percentage of sodium acrylate in the first main agent is greater than the mass percentage of sodium acrylate in the second main agent;

[0013] The mass percentage of magnesium acrylate in the first main agent is less than the mass percentage of magnesium acrylate in the second main agent.

[0014] Preferably, the first main agent comprises the following components in percentage by weight: 14-15% sodium acrylate, 16-17% magnesium acrylate, 2.0-6.0% p-hydroxyanisole, 0.2-0.5% sodium citrate and 65-70% water.

[0015] Preferably, the accelerator comprises the following components in percentage by mass: 45-50% triethanolamine, 9-10% tetrahydroxyethylethylenediamine, 26-28% polyethylene glycol, 3-4% diethylene glycol and 14-16% water.

[0016] Preferably, the second main agent comprises the following components in percentage by weight: 9-10% sodium acrylate, 23-24% magnesium acrylate, 0.1-0.2% p-hydroxyanisole, 0.3-0.5% sodium citrate and 66-69% water;

[0017] Preferably, the curing agent comprises sodium persulfate.

[0018] Preferably, the mass ratio of the first main agent to the accelerator is 100:0.1-1.2;

[0019] The mass ratio of the second main agent to the curing agent is 100:0.5-1.3.

[0020] Preferably, the mass ratio of component A to component B is 100.1-101.2:100.5-101.3.

[0021] The present invention also provides a method for using the grouting plugging fluid described in the above technical solution, including method 1 and method 2;

[0022] The method 1 comprises:

[0023] Mixing the first main agent and the accelerator to obtain component A;

[0024] Mixing the second main agent and the curing agent to obtain component B;

[0025] Performing double liquid grouting on the component A and the component B to gel;

[0026] The use method 2 comprises: mixing the component A and the component B, performing single liquid grouting, and performing gelation.

[0027] Preferably, the time for starting gelation in the method 1 is 1 to 25 minutes.

[0028] Preferably, in the use method 2, the mixing time of component A and component B is 0.5 to 1 min, and the gelation time is 1.5 to 26 min.

[0029] The invention provides a grouting plugging liquid, comprising independently packaged component A and component B; the component A comprises an independently packaged first main agent and an accelerator; the first main agent comprises sodium acrylate, magnesium acrylate, p-hydroxyanisole, sodium citrate and water; the accelerator comprises triethanolamine, tetrahydroxyethylethylenediamine, polyethylene glycol, diethylene glycol and water; the component B comprises an independently packaged second main agent and a curing agent; the second main agent comprises sodium acrylate, magnesium acrylate, p-hydroxyanisole, sodium citrate and water; the mass percentage of sodium acrylate in the first main agent is greater than the mass percentage of sodium acrylate in the second main agent; the mass percentage of magnesium acrylate in the first main agent is less than the mass percentage of magnesium acrylate in the second main agent.

[0030] The present invention uses an acrylate grouting plugging fluid, and its plugging principle mainly relies on its high fluidity and rapid solidification characteristics. During the grouting process, the acrylate grouting plugging fluid can quickly penetrate into the fine cracks of the building structure, and then quickly solidify through chemical reactions to form a solid sealing layer. This process can not only effectively plug leaks, but also enhance the overall strength of the structure and avoid the risk of leakage in the later stage.

[0031] Its reaction mechanism involves a complex chemical reaction process. When magnesium acrylate, sodium acrylate, and water in the acrylate grouting plugging fluid come into contact with the accelerator and curing agent, the chemical components inside will undergo a polymerization reaction to form a high molecular polymer. These polymers have high strength and stability, and can effectively seal cracks and holes and prevent water penetration. Specifically, after the magnesium acrylate, sodium acrylate, and water in the acrylate grouting plugging fluid react with the accelerator and curing agent, polymers such as magnesium polyacrylate and sodium polyacrylate will be generated. This polymer has good water resistance and chemical stability, and can remain insoluble in water for a long time, avoiding the slurry flow problem caused by the dissolution of traditional grouting materials. At the same time, the high-strength polymer formed by the acrylate grouting plugging fluid has high compressive strength and toughness, and can withstand the stress changes of the building structure, avoiding the risk of leakage caused by structural deformation.

[0032] In addition, the plugging fluid provided by the present invention is an aqueous system, which is environmentally friendly and non-toxic. The product before solidification and the solidified material are completely non-combustible and will not cause any harmful effects on the human body, organisms and the environment. DETAILED DESCRIPTION

[0033] The present invention provides a grouting plugging liquid, comprising independently packaged component A and component B;

[0034] The component A comprises a first main agent and an accelerator which are packaged separately;

[0035] The first main agent includes sodium acrylate, magnesium acrylate, p-hydroxyanisole, sodium citrate and water;

[0036] The accelerator includes triethanolamine, tetrahydroxyethylethylenediamine, polyethylene glycol, diethylene glycol and water;

[0037] The component B includes a second main agent and a curing agent which are packaged separately;

[0038] The second main agent includes sodium acrylate, magnesium acrylate, p-hydroxyanisole, sodium citrate and water;

[0039] The mass percentage of sodium acrylate in the first main agent is greater than the mass percentage of sodium acrylate in the second main agent;

[0040] The mass percentage of magnesium acrylate in the first main agent is less than the mass percentage of magnesium acrylate in the second main agent.

[0041] In the present invention, the component A comprises a first main agent and a promoter which are packaged separately. In the present invention, the first main agent preferably comprises the following components in percentage by mass: 14-15% sodium acrylate, 16-17% magnesium acrylate, 2.0-6.0% p-hydroxyanisole, 0.2-0.5% sodium citrate and 65-70% water, and more preferably 14.2-14.6% sodium acrylate, 16.2-16.5% magnesium acrylate, 3.2-5.0% p-hydroxyanisole, 0.22-0.4% sodium citrate and 65.48-68% water.

[0042] In the present invention, the preparation method of the first main agent preferably comprises the following steps:

[0043] first mixing acrylic acid, p-hydroxyanisole, magnesium oxide and water to obtain a magnesium acrylate aqueous solution;

[0044] secondly mixing acrylic acid, sodium hydroxide and water to obtain a sodium acrylate aqueous solution;

[0045] The sodium hydroxide, citric acid and water are mixed for the third time to obtain a sodium citrate aqueous solution;

[0046] The magnesium acrylate aqueous solution, the sodium acrylate aqueous solution and the sodium citrate aqueous solution are fourthly mixed.

[0047] In the present invention, during the first mixing process, the water is preferably distilled water; the order of the first mixing is preferably: dissolving acrylic acid in part of the water to obtain an acrylic acid solution; dispersing magnesium oxide in the remaining water to obtain a magnesium oxide dispersion; mixing the acrylic acid solution, the magnesium oxide dispersion and p-hydroxyphenyl ether. In the present invention, the mass ratio of acrylic acid to part of the water is preferably 38-42:45-50; the mass ratio of magnesium oxide to the remaining water is preferably 11-13:48-52; the mass ratio of acrylic acid to magnesium oxide is preferably 38-42:11-13; the mass ratio of acrylic acid to p-hydroxyanisole is preferably 38-42:0.1-0.2. In the present invention, the pH value of the magnesium acrylate aqueous solution is preferably 6.5-7.5; the mass concentration of the magnesium acrylate aqueous solution is preferably 30%.

[0048] In the present invention, the water is preferably distilled water during the second mixing process; the order of the second mixing is preferably: dissolving sodium hydroxide in part of the water to obtain a sodium hydroxide solution; dissolving acrylic acid in the remaining water to obtain an acrylic acid solution; mixing the acrylic acid solution and the sodium hydroxide solution; the mass ratio of the sodium hydroxide to part of the water is preferably 30-35:50-60; the mass ratio of the acrylic acid to the remaining water is preferably 40-45:40-45; the mass ratio of the acrylic acid to the sodium hydroxide is preferably 40-45:30-35. In the present invention, the pH value of the sodium acrylate aqueous solution is preferably 6.5-7.5; the mass concentration of the sodium acrylate aqueous solution is preferably 40%.

[0049] In the present invention, during the third mixing process, the water is preferably distilled water; the order of the third mixing is preferably: dissolving sodium hydroxide in part of the water to obtain a sodium hydroxide solution; dissolving citric acid in the remaining water to obtain a citric acid solution; mixing the citric acid solution and the sodium hydroxide solution; the mass ratio of the sodium hydroxide to part of the water is preferably 25-30:45-50; the mass ratio of the citric acid to the remaining water is preferably 30-35:31-35; the mass ratio of the citric acid to the sodium hydroxide is preferably 30-35:25-30. In the present invention, the pH value of the sodium citrate aqueous solution is preferably 6.5-7.5; the mass concentration of the sodium citrate aqueous solution is preferably 30%.

[0050] In the present invention, in the fourth mixing process, the mass ratio of the magnesium acrylate aqueous solution, the sodium acrylate aqueous solution and the sodium citrate aqueous solution is preferably 50-55:33-38:1-2.

[0051] In the present invention, the first mixing, the second mixing, the third mixing and the fourth mixing are preferably performed under stirring conditions.

[0052] In the present invention, the accelerator preferably comprises the following components in percentage by weight: 45-50% triethanolamine, 9-10% tetrahydroxyethylethylenediamine, 26-28% polyethylene glycol, 3-4% diethylene glycol and 14-16% water, and more preferably 46-48.5% triethanolamine, 9.5-9.8% tetrahydroxyethylethylenediamine, 26.7-27% polyethylene glycol, 3.4-3.6% diethylene glycol and 14-16% water.

[0053] In the present invention, the preparation method of the accelerator preferably comprises the following steps: stirring and mixing the components included in the accelerator.

[0054] In the present invention, the mass ratio of the first main agent to the accelerator is preferably 100:0.1-1.2, specifically 100:0.1, 100:0.5, 100:1.0, 100:1.2.

[0055] In the present invention, the component B comprises a second main agent and a curing agent which are packaged separately. In the present invention, the second main agent preferably comprises the following components in percentage by mass: 9-10% sodium acrylate, 23-24% magnesium acrylate, 0.1-0.2% p-hydroxyanisole, 0.3-0.5% sodium citrate and 66-69% water, and more preferably 9.5-9.8% sodium acrylate, 23.5-23.6% magnesium acrylate, 0.15-0.16% p-hydroxyanisole, 0.36-0.4% sodium citrate and 66.09-68% water.

[0056] In the present invention, the preparation of the second main agent is preferably carried out by referring to the preparation method of the first main agent, the difference being that in the fourth mixing process, the mass ratio of the magnesium acrylate aqueous solution, the sodium acrylate aqueous solution and the sodium citrate aqueous solution is preferably 70-80:20-30:1-2.

[0057] In the present invention, the curing agent preferably includes sodium persulfate.

[0058] In the present invention, the mass ratio of the second main agent to the curing agent is preferably 100:0.5-1.3, specifically 100:0.5, 100:0.8, or 100:1.3.

[0059] In the present invention, the mass ratio of component A to component B is preferably 100.1-101.2:100.5-101.3.

[0060] The present invention also provides a method for using the grouting plugging fluid described in the above technical solution, including method 1 and method 2;

[0061] The method 1 comprises:

[0062] Mixing the first main agent and the accelerator to obtain component A;

[0063] Mixing the second main agent and the curing agent to obtain component B;

[0064] Performing double liquid grouting on the component A and the component B to gel;

[0065] The use method 2 comprises: mixing the component A and the component B, performing single liquid grouting, and performing gelation.

[0066] In the present invention, in the method 1, the time for starting gelation is preferably 1 to 25 minutes.

[0067] In the present invention, in the use method 2, the mixing time of component A and component B is preferably 0.5 to 1 min, and the time for starting gelation is preferably 1.5 to 26 min.

[0068] Unless otherwise specified, the materials and equipment used in the present invention are all commercially available products in the art.

[0069] The technical solutions in the present invention will be described clearly and completely below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0070] In the following examples and comparative examples, the formulas of the first main agent, the accelerator, the second main agent and the curing agent are shown in Tables 1 to 4 respectively;

[0071] Table 1 Formula of the first main agent (a)

[0072] Serial number Raw material name Mass percentage (%) 1 Sodium Acrylate 14.6 2 Magnesium Acrylate 16.5 3 p-Hydroxyanisole 3.2 4 Sodium Citrate 0.22 5 water 65.48

[0073] Table 2 Formula of accelerator (a1)

[0074] Serial number Raw material name Mass percentage (%) 1 Triethanolamine 48.5 2 Tetrahydroxyethylethylenediamine 9.6 3 Polyethylene glycol 26.7 4 Diethylene glycol 3.4 5 water 11.8

[0075] Table 3 Formula of the second main agent (b)

[0076] Serial number Raw material name Mass percentage (%) 1 Sodium Acrylate 9.8 2 Magnesium Acrylate 23.6 3 p-Hydroxyanisole 0.15 4 Sodium Citrate 0.36 5 water 66.09

[0077] Table 4 Curing agent formula (b1)

[0078] Serial number Raw material name Mass percentage (%) 1 Sodium Persulfate 100

[0079] Examples and Comparative Examples

[0080] The specific construction process is: mix the first main agent a and the accelerator a1 to obtain component A;

[0081] The second main agent b and the curing agent b1 are mixed to obtain component B. The dosage of the first main agent and the second main agent remains unchanged (calculated as 100 by mass ratio), and the dosage of the accelerator and the curing agent is adjusted to carry out relevant comparative examples and embodiments; the ratio of component A to component B in the embodiments and comparative examples is shown in Table 5;

[0082] The performance of the plugging fluid was tested according to the JC / T 2037-2010 "Acrylate Grouting Material" standard;

[0083] Table 5 Formulas of grouting plugging fluids of Examples and Comparative Examples

[0084]

[0085] The gel time is the time when component A and component B start to gel after mixing, and the gelling time is the total time from when component A and component B are mixed to when the plugging material is formed;

[0086] From the above five schemes, it can be seen that the gel time of the product can be adjusted by adjusting the amount of the accelerator, but if the accelerator is missing, the product will not be able to gel. And from the examples, it can be seen that the mass ratio of the accelerator is controlled in the range of 0.1 to 1.2, which is more appropriate. Through various data, it can be shown that the gel time and gelation time of the product are relatively fast, and the gel time is controllable, which meets the plugging requirements.

[0087] Although the above embodiment describes the present invention in detail, it is only a part of the embodiments of the present invention, not all of the embodiments. Other embodiments can be obtained based on this embodiment without creativity, and these embodiments all fall within the protection scope of the present invention.

Claims

1. A grouting plugging fluid, characterized in that: Comprising independently packaged component A and component B; The component A comprises a first main agent and an accelerator which are packaged separately; The first main agent includes sodium acrylate, magnesium acrylate, p-hydroxyanisole, sodium citrate and water; The accelerator includes triethanolamine, tetrahydroxyethylethylenediamine, polyethylene glycol, diethylene glycol and water; The component B includes a second main agent and a curing agent which are packaged separately; The second main agent includes sodium acrylate, magnesium acrylate, p-hydroxyanisole, sodium citrate and water; The mass percentage of sodium acrylate in the first main agent is greater than the mass percentage of sodium acrylate in the second main agent; The mass percentage of magnesium acrylate in the first main agent is less than the mass percentage of magnesium acrylate in the second main agent.

2. The grouting plugging liquid according to claim 1, characterized in that: The first main agent comprises the following components in percentage by mass: 14-15% sodium acrylate, 16-17% magnesium acrylate, 2.0-6.0% p-hydroxyanisole, 0.2-0.5% sodium citrate and 65-70% water.

3. The grouting plugging liquid according to claim 1, characterized in that: The accelerator comprises the following components in percentage by mass: 45-50% of triethanolamine, 9-10% of tetrahydroxyethylethylenediamine, 26-28% of polyethylene glycol, 3-4% of diethylene glycol and 14-16% of water.

4. The grouting plugging liquid according to claim 1, characterized in that: The second main agent comprises the following components in percentage by weight: 9-10% sodium acrylate, 23-24% magnesium acrylate, 0.1-0.2% p-hydroxyanisole, 0.3-0.5% sodium citrate and 66-69% water.

5. The grouting plugging liquid according to claim 1, characterized in that: The curing agent includes sodium persulfate.

6. The grouting plugging liquid according to claim 1, characterized in that: The mass ratio of the first main agent to the accelerator is 100:0.1-1.2; The mass ratio of the second main agent to the curing agent is 100:0.5-1.

3.

7. The grouting plugging liquid according to claim 1 or 6, characterized in that: The mass ratio of component A to component B is 100.1-101.2:100.5-101.

3.

8. The method for using the grouting plugging liquid according to any one of claims 1 to 7, characterized in that: Including usage method 1 and usage method 2; The method 1 comprises: Mixing the first main agent and the accelerator to obtain component A; Mixing the second main agent and the curing agent to obtain component B; Performing double liquid grouting on the component A and the component B to gel; The use method 2 comprises: mixing the component A and the component B, performing single liquid grouting, and performing gelation.

9. The method of use according to claim 8, characterized in that: The time for gelation to start in the method 1 is 1 to 25 minutes.

10. The method of use according to claim 8, characterized in that: In the method of use 2, the mixing time of component A and component B is 0.5 to 1 min, and the gelation time is 1.5 to 26 min.

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