CN119638345B - Self-expanding prestressed grouting material and preparation method thereof - Google Patents
Self-expanding prestressed grouting material and preparation method thereofInfo
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- CN119638345B CN119638345B CN202411945555.3A CN202411945555A CN119638345B CN 119638345 B CN119638345 B CN 119638345B CN 202411945555 A CN202411945555 A CN 202411945555A CN 119638345 B CN119638345 B CN 119638345B
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Abstract
本发明公开了一种自膨胀预应力注浆材料及其制备方法，该注浆材料包括如下质量份数的组分：自应力活性材料12‑15份、抗氧化剂1‑2份、界面稳定剂1‑2份、结晶促进剂1‑2份、促凝剂1‑3份、增强剂3‑5份、胶凝材料100‑120份。本发明通过向注浆材料中引入自应力活性材料，可以有效提高注浆材料的抗压强度、抗拉强度、耐久性、抗震性和抗韧性，改善注浆效果，且该注浆材料制备工艺简单，成本低廉，易于推广使用。The present invention discloses a self-expanding prestressed grouting material and a preparation method thereof. The grouting material comprises the following components by weight: 12-15 parts of a self-stressing active material, 1-2 parts of an antioxidant, 1-2 parts of an interfacial stabilizer, 1-2 parts of a crystallization accelerator, 1-3 parts of a coagulant, 3-5 parts of a reinforcing agent, and 100-120 parts of a cementitious material. By introducing the self-stressing active material into the grouting material, the present invention can effectively improve the compressive strength, tensile strength, durability, shock resistance, and toughness of the grouting material, thereby improving the grouting effect. Furthermore, the grouting material has a simple preparation process, low cost, and is easy to promote and use.
Description
Technical Field
The invention belongs to the technical field of grouting material preparation, and particularly relates to a self-expansion prestressed grouting material and a preparation method thereof.
Background
As the coal mining depth increases, the surrounding rock of the coal mine tunnel has a large deformation problem. Grouting modification is an effective means for controlling surrounding rock of a roadway, and a good reinforcing effect is achieved at present. The prestress support concept refers to a technology for protecting the stability of a roadway by pre-applying stress to resist the action of external force. The core idea is that before the surrounding rock of the roadway is affected by external force, a certain tension is applied to the surrounding rock through a prestressed anchor rod and a grouting material system, so that the stress state of the surrounding rock is reduced, and the roadway is prevented from being damaged. The prestress support technology is widely applied to roadway support under various complex geological conditions, in particular to difficult and complex roadways with large sections, geological structure damaged areas, soft and thicker top plates, high ground stress and the like. At present, in grouting modification of roadway surrounding rock reinforcement, researches on prestressed grouting materials are still rarely reported.
In view of this, the present invention has been made.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent. Therefore, the embodiment of the invention provides the self-expansion prestressed grouting material which is simple in method, low in cost and outstanding in reinforcing effect, and the preparation method and popularization and application thereof.
The embodiment of the invention provides a self-expansion prestressed grouting material, which comprises, by mass, 12-15 parts of a self-stress active material, 1-2 parts of an antioxidant, 1-2 parts of an interfacial stabilizer, 1-2 parts of a crystallization accelerator, 1-3 parts of a coagulant, 3-5 parts of a reinforcing agent and 100-120 parts of a cementing material.
In some embodiments, the self-stressing active material is a mixture of calcium carbide and aluminum carbide;
Preferably, the mass ratio of the calcium carbide to the aluminum carbide is (4-6): 1.
In some embodiments, the antioxidant is at least one of 2, 6-di-tert-butylhydroquinone, 4-tert-butyl-5-methoxy catechol.
In some embodiments, the interfacial stabilizer is a mixture of a triazine triethanolamine salt of a polycarboxylic acid and a polyoxyethylene lauryl ether carboxylic acid;
Preferably, the mass ratio of the triazine triethanolamine salt to the polyoxyethylene lauryl ether carboxylic acid is 1 (1.5-3).
In some embodiments, the crystallization promoter is a mixture of a triethylamine-borane complex and a zirconium dodecylbenzenesulfonate complex;
Preferably, the mass ratio of the triethylamine-borane complex to the zirconium dodecylbenzenesulfonate complex is 1:1.
In some embodiments, the coagulant is a mixture of lithium aluminum hydride and lithium chromate;
preferably, the mass ratio of the lithium aluminum hydride to the lithium chromate is (2-3): 1.
In some embodiments, the reinforcing agent is a mixture of a methylpropenyl polyhedral oligomeric silsesquioxane and an acrylic-based polyhedral oligomeric silsesquioxane;
Preferably, the mass ratio of the methacrylic group cage type silsesquioxane to the acrylic group-cage type polysilsesquioxane is 1 (2-4).
In some embodiments, the cementitious material is at least one of a sulphoaluminate cement, an aluminate cement.
On the other hand, the embodiment of the invention also provides a preparation method of the self-expansion prestressed grouting material, which comprises the following steps:
S1, respectively weighing a crystallization accelerator, a coagulant, an enhancer and a cementing material according to parts by weight, and uniformly mixing to obtain a mixed material;
s2, respectively weighing the self-stress active material, the antioxidant and the interface stabilizer according to the parts by weight, adding the self-stress active material, the antioxidant and the interface stabilizer into the mixed material, and stirring and mixing the materials to obtain the self-expansion prestress grouting material.
In some embodiments, in the step S2, the stirring and mixing time is 20-60 min.
The embodiment of the invention has the advantages and beneficial effects that:
(1) According to the embodiment of the invention, the calcium carbide and aluminum carbide self-stress active materials are introduced into the grouting material, and react with water to generate acetylene gas when the grouting material is used on site and stirred by adding water, so that the grouting material expands to form a prestress effect in cracks, and the grouting effect can be effectively improved.
(2) According to the self-stress active material provided by the embodiment of the invention, a large number of micro-nano bubbles can be generated in the grouting material, and the micro-nano bubbles serve as heterogeneous crystal nuclei to serve as nucleation sites in the hydration process of the grouting material, so that the nucleation and growth of crystals of the cementing material can be promoted, the hydration degree of grouting stone body is improved, and the compressive strength is improved.
(3) The self-stress active material in the invention can generate a large number of micro-nano bubbles in the grouting material, and the bubble phase and the solid phase form a large number of solid-gas interfaces, so that the interface area of a grouting material system is increased, the interface energy is obviously improved, and when a grouting junction entity is impacted by the outside, a large amount of impact energy is absorbed by the interface, so that the grouting material has better shock resistance and toughness, and can be stably used under severe roadway impact.
(4) According to the embodiment of the invention, the calcium carbide and aluminum carbide self-stress active material is introduced into the grouting material, and can react with water to generate a large amount of calcium hydroxide and aluminum hydroxide alkaline molecules, on one hand, the alkaline molecules can be combined with silicate ions in the cementing material to form high-strength calcium silicate gel and aluminum silicate gel, so that the compression strength and the tensile strength of the grouting material are enhanced, and the durability is improved, and on the other hand, the alkaline molecules can react with carbon dioxide in the air to generate carbonization, so that the mechanical strength of the grouting material is improved.
Detailed Description
The following detailed description of embodiments of the invention is exemplary and intended to be illustrative of the invention and not to be construed as limiting the invention.
Where a value is described herein as a range, it is understood that such disclosure includes disclosure of all possible sub-ranges within the range, as well as specific values falling within the range, regardless of whether the specific value or sub-range is explicitly recited.
In this document, the words "comprise" and "comprising" and their various variants are intended to mean that other elements or integers may be included that allow for but not specifically described.
In this context, the term "and/or" is merely an association describing the association of the objects, meaning that there may be three relationships, e.g. A and/or B, and that there may be three cases where A alone exists, while A and B exist, and B alone exists.
In one aspect, the embodiment of the invention provides a self-expanding prestressed grouting material, which comprises, by mass, 12-15 parts (such as, for example, 12 parts, 13 parts, 14 parts, 15 parts, etc.), 1-2 parts (such as, for example, 1 part, 2 parts, etc.), 1-3 parts (such as, for example, 1 part, 2 parts, etc.), 3-5 parts (such as, for example, 3 parts, 4 parts, 5 parts, etc.), 100-120 parts (such as, for example, 100 parts, 105 parts, 110 parts, 120 parts, etc.), and 3-5 parts (such as, for example, 3 parts, 4 parts, 5 parts, etc.), of a reinforcing agent.
In some embodiments, the self-stressing active material is a mixture of calcium carbide (CAS: 75-20-7) and aluminum carbide (CAS: 1299-86-1);
Preferably, the mass ratio of the calcium carbide to the aluminum carbide is (4-6): 1, such as, without limitation, 4:1, 5:1, 6:1, etc. The inventor finds that if the mass ratio of the calcium carbide is too high, excessive gas is generated, and the mechanical property of the grouting material is lost, but if the mass ratio of the calcium carbide is too low, the generated gas is too low, the expansion rate is low, and the prestress is low, so that the mass ratio of the calcium carbide to the aluminum carbide is controlled to be (4-6): 1, which is beneficial.
In some embodiments, the antioxidant is at least one of 2, 6-di-tert-butylhydroquinone (CAS: 2444-28-2), 4-tert-butyl-5-methoxy catechol (CAS: 91352-66-8).
In some embodiments, the interfacial stabilizer is a mixture of triazine triethanolamine salt of polycarboxylic acid (CAS: 80584-92-5) and polyoxyethylene lauryl ether carboxylic acid (CAS: 220622-96-8);
Preferably, the mass ratio of the triazine triethanolamine salt to the polyoxyethylene lauryl ether carboxylic acid is 1 (1.5-3), and non-limiting examples are 1:1.5, 1:2, 1:3 and the like.
By compounding the triethanolamine triazine polycarboxylate and the polyoxyethylene lauryl ether carboxylate as an interface stabilizer, tiny bubbles can be stably generated, so that the self-expansion effect of the material is better. The inventor finds that if the addition amount of the interface stabilizer is too high, the overall mechanical property of the grouting material is lost, but if the addition amount of the interface stabilizer is too low, the generated microbubbles are difficult to stably exist, and the self-expansion effect is weak, so that the addition amount of the interface stabilizer is controlled to be 1-2 parts.
In some embodiments, the crystallization promoter is a mixture of a triethylamine-borane complex (CAS: 1722-26-5) and a zirconium dodecylbenzenesulfonate complex (CAS: 109766-35-0);
Preferably, the mass ratio of the triethylamine-borane complex to the zirconium dodecylbenzenesulfonate complex is 1:1.
By compounding a triethylamine-borane complex and a zirconium dodecyl benzene sulfonate complex as a crystallization accelerator, hydration crystallization of the cementing material can be promoted. The inventor finds that if the addition amount of the crystallization accelerator is too high, the generated hydrated crystal is large in number but small in size and has impaired impact resistance, but if the addition amount of the crystallization accelerator is too low, the hydrated crystal effect is weak and the mechanical strength is low, so that the addition amount of the crystallization accelerator is controlled to be 1-2 parts, which is beneficial.
In some embodiments, the accelerator is a mixture of lithium aluminum hydride (CAS: 16853-85-3) and lithium chromate (CAS: 7789-01-7);
Preferably, the mass ratio of the lithium aluminum hydride to the lithium chromate is (2-3): 1, such as, without limitation, 2:1, 2.5:1, 3:1, etc.
The setting of the cement can be promoted by compounding lithium aluminum hydride with lithium chromate as a setting accelerator. The inventor finds that if the addition amount of the coagulant is too high, the coagulation time is short and the on-site operation window is short, but if the addition amount of the coagulant is too low, the coagulation effect is poor and the coagulation is slow, so that the addition amount of the coagulant is controlled to be 1-3 parts.
In some embodiments, the reinforcing agent is a mixture of a methylpropenyl polyhedral oligomeric silsesquioxane (CAS: 1204591-17-2) and an acrylic-polyhedral oligomeric silsesquioxane (CAS: 1620202-27-8);
Preferably, the mass ratio of the methacrylic group cage type silsesquioxane to the acrylic group-cage type polysilsesquioxane is 1 (2-4), and non-limiting examples are 1:2, 1:3, 1:4 and the like.
The mechanical strength of the grouting material can be improved by compounding the methylpropenyl cage-shaped silsesquioxane and the acrylic acid-cage-shaped polysilsesquioxane as the reinforcing agent. The inventor finds that if the addition amount of the reinforcing agent is too high, the dispersion is poor, agglomeration is easy to cause, and the fracture resistance and the impact resistance of the grouting material are damaged, but if the addition amount of the reinforcing agent is too low, the reinforcing effect is poor, and the mechanical strength of the grouting material is not high, so that the addition amount of the reinforcing agent is controlled to be 3-5 parts.
In some embodiments, the cementitious material is at least one of a sulphoaluminate cement, an aluminate cement.
On the other hand, the embodiment of the invention also provides a preparation method of the self-expansion prestressed grouting material, which comprises the following steps:
S1, respectively weighing a crystallization accelerator, a coagulant, an enhancer and a cementing material according to parts by weight, and uniformly mixing to obtain a mixed material;
s2, respectively weighing the self-stress active material, the antioxidant and the interface stabilizer according to the parts by weight, adding the self-stress active material, the antioxidant and the interface stabilizer into the mixed material, and stirring and mixing the materials to obtain the self-expansion prestress grouting material.
In some embodiments, in the step S2, the stirring and mixing time is 20-60 min, such as, but not limited to, 20min, 30min, 45min, 50min, 60min, etc.
The technical scheme of the invention is further described in detail below with reference to specific embodiments. The various starting materials used in the examples are conventional commercial products, or may be prepared by known methods, unless otherwise indicated.
Example 1
The embodiment provides a preparation method of a self-expansion prestressed grouting material, which comprises the following steps:
S1, respectively weighing 1 part of crystallization accelerator, 1 part of coagulant, 3 parts of reinforcing agent and 100 parts of cementing material according to parts by weight, and uniformly mixing to obtain a mixed material;
S2, respectively weighing 12 parts of self-stress active material, 1 part of antioxidant and 1 part of interface stabilizer according to parts by weight, adding the materials into the mixed material obtained in the step S1, and stirring and mixing the materials in a dry powder stirrer for 30 minutes to obtain the self-expansion prestressed grouting material.
The self-stress active material in the embodiment is a mixture of calcium carbide and aluminum carbide, and the mass ratio of the self-stress active material to the aluminum carbide is 5:1;
The antioxidant in this example is 2, 6-di-tert-butylhydroquinone;
the interface stabilizer in the embodiment is a mixture of triazine triethanolamine salt of polycarboxylic acid and polyoxyethylene lauryl ether carboxylic acid, and the mass ratio of the interface stabilizer to the polyoxyethylene lauryl ether carboxylic acid is 1:2;
the crystallization accelerator in the embodiment is a mixture of a triethylamine-borane complex and a zirconium dodecyl benzene sulfonate complex, and the mass ratio of the three complexes is 1:1;
The coagulant in the embodiment is a mixture of lithium aluminum hydride and lithium chromate, and the mass ratio of the coagulant to the lithium chromate is 2:1;
The reinforcing agent in the embodiment is a mixture of methacrylic cage type silsesquioxane and acrylic group-cage type polysilsesquioxane, and the mass ratio of the reinforcing agent to the acrylic group-cage type polysilsesquioxane is 1:3;
the cementing material in this embodiment is sulphoaluminate cement.
Example 2
The embodiment provides a preparation method of a self-expansion prestressed grouting material, which comprises the following steps:
s1, respectively weighing 2 parts of crystallization accelerator, 1 part of coagulant, 4 parts of reinforcing agent and 105 parts of cementing material according to parts by weight, and uniformly mixing to obtain a mixed material;
S2, respectively weighing 13 parts of self-stress active material, 1 part of antioxidant and 1 part of interface stabilizer according to parts by weight, adding the materials into the mixed material obtained in the step S1, and stirring and mixing the materials in a dry powder stirrer for 30 minutes to obtain the self-expansion prestressed grouting material.
The self-stress active material in the embodiment is a mixture of calcium carbide and aluminum carbide, and the mass ratio of the self-stress active material to the aluminum carbide is 5:1;
the antioxidant in this example is 4-tert-butyl-5-methoxy catechol;
the interface stabilizer in the embodiment is a mixture of triazine triethanolamine salt of polycarboxylic acid and polyoxyethylene lauryl ether carboxylic acid, and the mass ratio of the interface stabilizer to the polyoxyethylene lauryl ether carboxylic acid is 1:2;
the crystallization accelerator in the embodiment is a mixture of a triethylamine-borane complex and a zirconium dodecyl benzene sulfonate complex, and the mass ratio of the three complexes is 1:1;
The coagulant in the embodiment is a mixture of lithium aluminum hydride and lithium chromate, and the mass ratio of the coagulant to the lithium chromate is 2:1;
The reinforcing agent in the embodiment is a mixture of methacrylic cage type silsesquioxane and acrylic group-cage type polysilsesquioxane, and the mass ratio of the reinforcing agent to the acrylic group-cage type polysilsesquioxane is 1:3;
the cementing material in this embodiment is sulphoaluminate cement.
Example 3
The embodiment provides a preparation method of a self-expansion prestressed grouting material, which comprises the following steps:
s1, respectively weighing 1 part of crystallization accelerator, 2 parts of coagulant, 4 parts of reinforcing agent and 110 parts of cementing material according to parts by weight, and uniformly mixing to obtain a mixed material;
S2, respectively weighing 13 parts of self-stress active material, 2 parts of antioxidant and 1 part of interface stabilizer according to parts by weight, adding the materials into the mixed material obtained in the step S1, and stirring and mixing the materials in a dry powder stirrer for 30 minutes to obtain the self-expansion prestressed grouting material.
The self-stress active material in the embodiment is a mixture of calcium carbide and aluminum carbide, and the mass ratio of the self-stress active material to the aluminum carbide is 5:1;
The antioxidant in this example is 2, 6-di-tert-butylhydroquinone;
the interface stabilizer in the embodiment is a mixture of triazine triethanolamine salt of polycarboxylic acid and polyoxyethylene lauryl ether carboxylic acid, and the mass ratio of the interface stabilizer to the polyoxyethylene lauryl ether carboxylic acid is 1:2;
the crystallization accelerator in the embodiment is a mixture of a triethylamine-borane complex and a zirconium dodecyl benzene sulfonate complex, and the mass ratio of the three complexes is 1:1;
The coagulant in the embodiment is a mixture of lithium aluminum hydride and lithium chromate, and the mass ratio of the coagulant to the lithium chromate is 2:1;
The reinforcing agent in the embodiment is a mixture of methacrylic cage type silsesquioxane and acrylic group-cage type polysilsesquioxane, and the mass ratio of the reinforcing agent to the acrylic group-cage type polysilsesquioxane is 1:3;
The cementing material in this embodiment is aluminate cement.
Example 4
The embodiment provides a preparation method of a self-expansion prestressed grouting material, which comprises the following steps:
s1, respectively weighing 2 parts of crystallization accelerator, 2 parts of coagulant, 5 parts of reinforcing agent and 115 parts of cementing material according to parts by weight, and uniformly mixing to obtain a mixed material;
s2, respectively weighing 14 parts of self-stress active material, 1 part of antioxidant and 1 part of interface stabilizer according to parts by weight, adding the materials into the mixed material obtained in the step S1, and stirring and mixing the materials in a dry powder stirrer for 30 minutes to obtain the self-expansion prestressed grouting material.
The self-stress active material in the embodiment is a mixture of calcium carbide and aluminum carbide, and the mass ratio of the self-stress active material to the aluminum carbide is 5:1;
The antioxidant in this example is 2, 6-di-tert-butylhydroquinone;
the interface stabilizer in the embodiment is a mixture of triazine triethanolamine salt of polycarboxylic acid and polyoxyethylene lauryl ether carboxylic acid, and the mass ratio of the interface stabilizer to the polyoxyethylene lauryl ether carboxylic acid is 1:2;
the crystallization accelerator in the embodiment is a mixture of a triethylamine-borane complex and a zirconium dodecyl benzene sulfonate complex, and the mass ratio of the three complexes is 1:1;
The coagulant in the embodiment is a mixture of lithium aluminum hydride and lithium chromate, and the mass ratio of the coagulant to the lithium chromate is 2:1;
The reinforcing agent in the embodiment is a mixture of methacrylic cage type silsesquioxane and acrylic group-cage type polysilsesquioxane, and the mass ratio of the reinforcing agent to the acrylic group-cage type polysilsesquioxane is 1:3;
The cementing material in this embodiment is aluminate cement.
Example 5
The embodiment provides a preparation method of a self-expansion prestressed grouting material, which comprises the following steps:
s1, respectively weighing 2 parts of crystallization accelerator, 3 parts of coagulant, 5 parts of reinforcing agent and 120 parts of cementing material according to parts by weight, and uniformly mixing to obtain a mixed material;
s2, respectively weighing 15 parts of self-stress active material, 2 parts of antioxidant and 2 parts of interface stabilizer according to parts by weight, adding the materials into the mixed material obtained in the step S1, and stirring and mixing the materials in a dry powder stirrer for 30 minutes to obtain the self-expansion prestressed grouting material.
The self-stress active material in the embodiment is a mixture of calcium carbide and aluminum carbide, and the mass ratio of the self-stress active material to the aluminum carbide is 5:1;
the antioxidant in this example is 4-tert-butyl-5-methoxy catechol;
the interface stabilizer in the embodiment is a mixture of triazine triethanolamine salt of polycarboxylic acid and polyoxyethylene lauryl ether carboxylic acid, and the mass ratio of the interface stabilizer to the polyoxyethylene lauryl ether carboxylic acid is 1:2;
the crystallization accelerator in the embodiment is a mixture of a triethylamine-borane complex and a zirconium dodecyl benzene sulfonate complex, and the mass ratio of the three complexes is 1:1;
The coagulant in the embodiment is a mixture of lithium aluminum hydride and lithium chromate, and the mass ratio of the coagulant to the lithium chromate is 2:1;
The reinforcing agent in the embodiment is a mixture of methacrylic cage type silsesquioxane and acrylic group-cage type polysilsesquioxane, and the mass ratio of the reinforcing agent to the acrylic group-cage type polysilsesquioxane is 1:3;
the cementing material in this embodiment is sulphoaluminate cement.
The grouting materials prepared in the above examples were subjected to performance test, and the results are shown in table 1.
TABLE 1
As can be seen from table 1, according to the embodiment of the invention, by optimizing the formulation composition of the grouting material and introducing the self-stress active material of calcium carbide and aluminum carbide, the prestress effect can be generated, the grouting effect can be improved, and the mechanical property of the grouting material can be improved.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (4)
1. The self-expansion prestressed grouting material is characterized by comprising, by mass, 12-15 parts of self-stress active materials, 1-2 parts of antioxidants, 1-2 parts of interface stabilizers, 1-2 parts of crystallization promoters, 1-3 parts of coagulants, 3-5 parts of reinforcing agents and 100-120 parts of cementing materials;
Wherein the self-stress active material is a mixture composed of calcium carbide and aluminum carbide with the mass ratio of (4-6) being 1;
The antioxidant is at least one of 2, 6-di-tert-butylhydroquinone and 4-tert-butyl-5-methoxy catechol;
The interface stabilizer is a mixture composed of triazine polycarboxylic acid triethanolamine salt and polyoxyethylene lauryl ether carboxylic acid with the mass ratio of (1.5-3);
The crystallization promoter is a mixture composed of a triethylamine-borane complex and a zirconium dodecyl benzene sulfonate complex in a mass ratio of 1:1;
the coagulant is a mixture composed of lithium aluminum hydride and lithium chromate with the mass ratio of (2-3) being 1;
The reinforcing agent is a mixture composed of (2-4) methyl propenyl cage-shaped silsesquioxane and acrylic group-cage-shaped polysilsesquioxane in a mass ratio of 1.
2. The self-expanding prestressed grouting material of claim 1, wherein the cementing material is at least one of sulfoaluminate cement and aluminate cement.
3. A method of preparing a self-expanding prestressed grouting material as claimed in claim 1 or 2, comprising the steps of:
S1, respectively weighing a crystallization accelerator, a coagulant, an enhancer and a cementing material according to parts by weight, and uniformly mixing to obtain a mixed material;
s2, respectively weighing the self-stress active material, the antioxidant and the interface stabilizer according to the parts by weight, adding the self-stress active material, the antioxidant and the interface stabilizer into the mixed material, and stirring and mixing the materials to obtain the self-expansion prestress grouting material.
4. The method for preparing a self-expanding prestressed grouting material according to claim 3, wherein in the step S2, the stirring and mixing time is 20-60 min.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5378279A (en) * | 1990-08-10 | 1995-01-03 | Conroy; Michel | Enhanced cement mixed with selected aggregates |
| CN117756493A (en) * | 2023-12-28 | 2024-03-26 | 中煤科工开采研究院有限公司 | Cage type silsesquioxane modified composite grouting material suitable for low-permeability coal roadway and preparation method thereof |
| CN118239741A (en) * | 2024-05-27 | 2024-06-25 | 北京纽维逊建筑工程技术有限公司 | Inorganic grouting material with controllable performance and preparation method and application thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5378279A (en) * | 1990-08-10 | 1995-01-03 | Conroy; Michel | Enhanced cement mixed with selected aggregates |
| CN117756493A (en) * | 2023-12-28 | 2024-03-26 | 中煤科工开采研究院有限公司 | Cage type silsesquioxane modified composite grouting material suitable for low-permeability coal roadway and preparation method thereof |
| CN118239741A (en) * | 2024-05-27 | 2024-06-25 | 北京纽维逊建筑工程技术有限公司 | Inorganic grouting material with controllable performance and preparation method and application thereof |
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