CN113046041B - Acrylic acid modified composite grouting material and preparation method and application thereof - Google Patents

Acrylic acid modified composite grouting material and preparation method and application thereof Download PDF

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CN113046041B
CN113046041B CN202110197534.8A CN202110197534A CN113046041B CN 113046041 B CN113046041 B CN 113046041B CN 202110197534 A CN202110197534 A CN 202110197534A CN 113046041 B CN113046041 B CN 113046041B
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grouting material
water
parts
acrylic acid
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CN113046041A (en
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刘绍光
陈武军
桂静
韩培亮
张军
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Dongfang Yuhong Building Repair Technology Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
    • C09K8/426—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells for plugging
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/52—Amides or imides
    • C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
    • C08F220/56—Acrylamide; Methacrylamide
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)
  • Sealing Material Composition (AREA)

Abstract

The invention belongs to the technical field of grouting, and discloses an acrylic acid modified composite grouting material, and a preparation method and application thereof. The composite grouting material comprises an A component, a B component and optionally a C component which are packaged independently; the component A is a liquid material and comprises acrylic acid, water, a first cross-linking agent, a first accelerator, a first initiator, a neutralizer and a polymer emulsion; the component B is a powder material and comprises a second accelerator, a second initiator and a second cross-linking agent; the component C is at least one of magnesium oxide, calcium carbonate, cement, bentonite, fly ash and water glass. The grouting material is a functional material, has strong functionality and wide application range, can be used for water prevention and leakage stoppage of engineering structures, and is also suitable for water shutoff and reinforcement of rock soil layers containing water powder fine sand, sand gravel and the like.

Description

Acrylic acid modified composite grouting material and preparation method and application thereof
Technical Field
The invention belongs to the technical field of grouting, and particularly relates to an acrylic acid modified composite grouting material and a preparation method and application thereof.
Background
In the traditional grouting materials, the organic grouting materials have low strength and poor durability although being elastic, so that the grouting materials can only treat the symptoms, but not the root causes, and cannot achieve the long-term waterproof and leaking stoppage effects. Although the inorganic grouting material has a certain strength and good durability, it has no problems of elasticity, water absorption, expansibility, high density, poor fluidity and the like, and is a completely rigid material and is likely to cause shrinkage cracks. The grouting material cannot resist uneven settlement and vibration of engineering, and is damaged and broken once settlement and vibration occur, so that the grouting material can be only used for plugging and reinforcing and cannot play a role in resisting water and seepage.
In addition, the commonly used grouting materials on the market at present are: sodium silicates, cement-based compounds, polyurethanes, epoxy resins, and the like. However, the products of the polyurethane and epoxy resin products have single performance, small application range and poor durability, and the products of the polyurethane and epoxy resin products have large odor, are toxic and harmful and cannot meet the technical requirements of environmental protection.
Therefore, a grouting material having both waterproof and plugging functions and a function of plugging water to reinforce the stratum is urgently needed to be provided.
Disclosure of Invention
The invention aims to provide an acrylic acid modified composite grouting material, and a preparation method and application thereof, aiming at the defects of the prior art. The grouting material has the functions of preventing water and stopping leakage and blocking water and reinforcing stratum. The grouting material is a functional material, has strong functionality and wide application range, can be used for water prevention and leakage stoppage of engineering structures, and is also suitable for water shutoff and reinforcement of rock soil layers containing water powder fine sand, sand gravel and the like.
In order to achieve the above object, a first aspect of the present invention provides an acrylic modified composite grouting material comprising an a-component and a B-component, which are independently packaged, and optionally a C-component;
the component A is a liquid material and comprises 80-120 parts by weight of acrylic acid, 800-1200 parts by weight of water, 5-10 parts by weight of a first cross-linking agent, 200-300 parts by weight of a first accelerating agent, 30-50 parts by weight of a first initiating agent, 80-100 parts by weight of a neutralizing agent and 50-150 parts by weight of polymer emulsion;
the component B is a powder material and comprises 15-25 parts by weight of a second accelerator, 10-20 parts by weight of a second initiator and 60-70 parts by weight of a second cross-linking agent;
the component C is at least one of magnesium oxide, calcium carbonate, cement, bentonite, fly ash and water glass.
The second aspect of the invention provides a preparation method of the acrylic acid modified composite grouting material, which comprises the following steps:
s1: uniformly mixing the acrylic acid, water, a first cross-linking agent, a first accelerator, a first initiator, a neutralizer and a polymer emulsion to obtain a component A; uniformly mixing the second accelerator, the second initiator and the second cross-linking agent to obtain the component B;
s2: and mixing the component B with water to obtain a component B mixed solution, and uniformly mixing the component B mixed solution with the component A to obtain the acrylic acid modified composite grouting material.
The third aspect of the invention provides the application of the acrylic modified composite grouting material in leakage engineering with the size of a structural crack smaller than 3.5mm and optionally comprising a hole.
The fourth aspect of the invention provides a preparation method of the acrylic acid modified composite grouting material, which comprises the following steps:
s1: uniformly mixing the acrylic acid, water, a first cross-linking agent, a first accelerator, a first initiator, a neutralizer and a polymer emulsion to obtain a component A; uniformly mixing the second accelerator, the second initiator and the second cross-linking agent to obtain the component B;
s2: and mixing the component B with water to obtain a component B mixed solution, and uniformly mixing the component B mixed solution, the component A and the component C to obtain the acrylic acid modified composite grouting material.
The fifth aspect of the invention provides the application of the acrylic modified composite grouting material in the seepage engineering of the structural crack with the size of more than or equal to 3.5mm and optionally including a hole.
The technical scheme of the invention has the following beneficial effects:
the grouting material of the invention is different from the prior art in that the grouting material of the invention has the functions of water prevention and leakage stoppage and water plugging and stratum strengthening. The grouting material is a functional material, has strong functionality and wide application range, can be used for waterproof and leaking stoppage of engineering structures, is also suitable for water shutoff and reinforcement of rock-soil strata containing water powder, fine sand, sand gravel and the like, and simultaneously has the following functional characteristics:
1. the grouting material of the invention can only comprise the component A and the component B, and also can comprise the component A, the component B and the component C;
2. the curing time can be adjusted from seconds to tens of minutes;
3. the strength of the gel consolidation body can be adjusted according to different engineering leakage conditions;
4. the durability is good: acid resistance, alkali resistance and freeze thawing resistance;
5. high elasticity: the elongation at break reaches more than 200%, and the elastic recovery rate is more than 97%;
6. strong consolidation force: can bond and solidify water, sand, clay and the like, and the bonding strength reaches more than 1.5MPa after 24 hours;
7. the water absorption rate is high: more than 200% of the volume of the product;
based on the functional characteristics, the grouting material can meet the requirements of water resistance and leakage stoppage of various projects, and can achieve the technical effects of permanently preventing water and stabilizing fine sand type strata.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The invention provides an acrylic acid modified composite grouting material, which comprises an A component, a B component and optionally a C component which are independently packaged;
the component A is a liquid material and comprises 80-120 parts by weight of acrylic acid, 800-1200 parts by weight of water, 5-10 parts by weight of a first cross-linking agent, 200-300 parts by weight of a first accelerator, 30-50 parts by weight of a first initiator, 80-100 parts by weight of a neutralizer and 50-150 parts by weight of a polymer emulsion;
the component B is a powder material and comprises 15-25 parts by weight of a second accelerator, 10-20 parts by weight of a second initiator and 60-70 parts by weight of a second cross-linking agent;
the component C is at least one of magnesium oxide, calcium carbonate, cement, bentonite, fly ash and water glass.
According to the present invention, it is preferable that,
the weight ratio of the component B to the component C is 1: (0.1-1);
the weight ratio of the component B to the component A is 1: (0.9-1.1).
According to the present invention, preferably, the first crosslinking agent is methylene bisacrylamide.
According to the present invention, preferably, the first accelerator is acrylamide.
According to the present invention, preferably, the first initiator is triethanolamine.
According to the present invention, preferably, the neutralizing agent is caustic soda.
According to the present invention, preferably, the polymer emulsion is at least one of a styrene-acrylic emulsion, a silicone-acrylic emulsion, and an acrylic emulsion.
According to the present invention, preferably, the second accelerator is at least one of sodium aluminate, potassium aluminate, and magnesium aluminate.
According to the present invention, preferably, the second initiator is at least one of sodium persulfate, ammonium persulfate and potassium persulfate.
According to the present invention, preferably, the second crosslinking agent is magnesium oxide and/or magnesium hydroxide having a particle size of more than 800 mesh.
According to the invention, preferably, the breaking elongation of the grouting material is 100-250%, the elastic recovery rate is more than 97%, the water absorption rate is 200-300%, and the strength of the consolidation body is more than 1.5MPa.
The second aspect of the invention provides a preparation method of the acrylic acid modified composite grouting material, which comprises the following steps:
s1: uniformly mixing the acrylic acid, water, a first cross-linking agent, a first accelerator, a first initiator, a neutralizer and a polymer emulsion to obtain a component A; uniformly mixing the second accelerator, the second initiator and the second cross-linking agent to obtain the component B;
s2: and mixing the component B with water to obtain a component B mixed solution, and uniformly mixing the component B mixed solution with the component A to obtain the acrylic acid modified composite grouting material.
According to the invention, the weight ratio of water to the B component is preferably (8-12): 1.
the third aspect of the invention provides the application of the acrylic modified composite grouting material in the seepage engineering of the structural crack with the size less than 3.5mm and optionally comprising a hole.
In the present invention, the seepage engineering of the structural crack with the size less than 3.5mm and optionally including the hole refers to the seepage engineering projects of cracks, construction joints, holes and the like which are generally considered by those skilled in the art, and the size of the structural crack is less than 3.5mm.
The fourth aspect of the invention provides a preparation method of the acrylic acid modified composite grouting material, which comprises the following steps:
s1: uniformly mixing the acrylic acid, water, a first cross-linking agent, a first accelerator, a first initiator, a neutralizer and the polymer emulsion to obtain the component A; uniformly mixing the second accelerator, the second initiator and the second cross-linking agent to obtain the component B;
s2: and mixing the component B with water to obtain a component B mixed solution, and uniformly mixing the component B mixed solution, the component A and the component C to obtain the acrylic acid modified composite grouting material.
According to the invention, the weight ratio of water to the B component is preferably (8-12): 1.
the fifth aspect of the invention provides the application of the acrylic modified composite grouting material in the seepage engineering of the structural crack with the size of more than or equal to 3.5mm and optionally including a hole.
In the present invention, the seepage engineering of the structural cracks with the size of 3.5mm or more and optionally including holes refers to the seepage engineering projects of large cracks, deformation joints, holes, sand gushes, water gushes and needing reinforcement, which are considered by those skilled in the art, and the size of the cracks is 3.5mm or more.
The present invention is specifically described below by way of examples.
Example 1
The embodiment provides an acrylic acid modified composite grouting material which comprises a component A and a component B which are independently packaged;
the component A is a liquid material and comprises 100kg of acrylic acid, 1000kg of deionized water, 5kg of methylene bisacrylamide, 200kg of acrylamide, 40kg of triethanolamine, 90kg of caustic soda and 60kg of styrene-acrylic emulsion;
the component B is a powder material and comprises 15kg of sodium aluminate, 15kg of sodium persulfate and 70kg of magnesium oxide.
The preparation method of the acrylic acid modified composite grouting material comprises the following steps:
s1: uniformly mixing the acrylic acid, deionized water, methylene bisacrylamide, acrylamide, triethanolamine, caustic soda and styrene-acrylic emulsion to obtain a component A; uniformly mixing the sodium aluminate, the sodium persulfate and the magnesium oxide to obtain the component B;
s2: and mixing the component B with deionized water to obtain a component B mixed solution, and uniformly mixing the component B mixed solution with the component A to obtain the acrylic acid modified composite grouting material.
In step S2: 1000kg of deionized water; the weight ratio of the component B to the component A is 1:1.
example 2
The embodiment provides an acrylic acid modified composite grouting material, which comprises an A component, a B component and a C component which are packaged independently;
the component A is a liquid material and comprises 100kg of acrylic acid, 1000kg of deionized water, 5kg of methylene bisacrylamide, 200kg of acrylamide, 40kg of triethanolamine, 90kg of caustic soda and 100kg of styrene-acrylic emulsion;
the component B is a powder material and comprises 15kg of potassium aluminate, 15kg of ammonium persulfate and 60kg of magnesium hydroxide with the particle size larger than 800 meshes.
The component C is 45kg of magnesium oxide.
The preparation method of the acrylic acid modified composite grouting material comprises the following steps:
s1: uniformly mixing the acrylic acid, deionized water, methylene bisacrylamide, acrylamide, triethanolamine, caustic soda and silicone-acrylate emulsion to obtain a component A; uniformly mixing the potassium aluminate, the ammonium persulfate and the magnesium hydroxide with the particle size larger than 800 meshes to obtain the component B;
s2: and mixing the component B with deionized water to obtain a component B mixed solution, and uniformly mixing the component B mixed solution, the component A and the component C to obtain the acrylic acid modified composite grouting material.
In step S2: 1000kg of deionized water; the weight ratio of the component B to the component A is 1:1; the weight ratio of the component B to the component C is 1:0.5.
example 3
The embodiment provides an acrylic acid modified composite grouting material which comprises an A component, a B component and a C component which are independently packaged;
the component A is a liquid material and comprises 100kg of acrylic acid, 1000kg of deionized water, 10kg of methylene bisacrylamide, 200kg of acrylamide, 40kg of triethanolamine, 90kg of caustic soda and 150kg of acrylic emulsion;
the component B is a powder material and comprises 25kg of magnesium aluminate, 15kg of potassium persulfate and 60kg of magnesium oxide.
The component C is a mixture of cement and bentonite, wherein 20kg of cement and 100kg of bentonite are contained.
The preparation method of the acrylic acid modified composite grouting material comprises the following steps:
s1: uniformly mixing the acrylic acid, deionized water, methylene bisacrylamide, acrylamide, triethanolamine, caustic soda and acrylic emulsion to obtain a component A; uniformly mixing the sodium aluminate, the sodium persulfate and the magnesium oxide to obtain the component B;
s2: and mixing the component B with deionized water to obtain a component B mixed solution, and uniformly mixing the component B mixed solution, the component A and the component C to obtain the acrylic acid modified composite grouting material.
In step S2: 1000kg of deionized water; the weight ratio of the component B to the component A is 1:1; the weight ratio of the component B to the component C is 1:1.2.
test example
The test example performs various performance tests of waterproof and leak stoppage on the acrylic acid modified composite grouting material prepared in the examples 1 to 3.
(one) experimental preparation: examples 1 to 3 were prepared into an acrylic modified composite grouting material, 1 stretcher, 1 waterproofer, 1 mortar press, 1 balance, 6 150 mm/10 mm mold boxes, a plurality of 500ml tapered measuring cylinders, 3 1000ml containers, 1 freeze-thaw box, 1 densitometer, 1 viscometer, 3 respective 500ml test molds each containing 10% sodium hydroxide solution and 1% hydrochloric acid solution, 3 respective coarse sand and crushed stone.
(II) sample preparation: the acrylic modified composite grouting material prepared in example 1 was poured into 2 mold boxes, and the remaining part was directly used for performance tests 4-7. And taking out the slurry from the mold box after the slurry in the mold box is solidified, and respectively cutting the slurry into a plurality of strip-shaped test pieces of 50 mm to 20 mm to 10 mm. The same treatment was carried out for the slip casting materials of examples 2 to 3.
(III) performance test:
1. elasticity test
The two ends of the test piece to be tested of each example were clamped into a stretching apparatus, stretched to break at a speed of 200 mm/min, the stretched length was measured, and the average value was calculated and converted into the elongation at break, and recorded.
2. Water resistance test
And (3) clamping the test pieces to be tested of each embodiment into a water impermeability instrument, opening a water injection valve, keeping the pressure constant for 30min at 0.2KPa, observing whether each test piece is permeable, and recording.
3. Durability test
The test pieces of each example were respectively immersed in a 10% sodium hydroxide solution and a 1% hydrochloric acid solution for 72 hours, taken out, observed for the presence of chalking or cracking on the surface of each test piece, and recorded.
And (3) putting the test pieces to be tested of each embodiment into a freeze-thaw box, performing 15 cycles, taking out, observing whether the surface of each test piece has pulverization or crack phenomena, and recording.
4. Water absorption test
Weighing a proper amount of grouting material to be detected in each embodiment, equally dividing the grouting material into multiple parts, mixing the multiple parts with 1-3 times of water by weight, pouring the mixture into a conical measuring cylinder, curing the mixture for 40 minutes, inclining the measuring cylinder at 45 degrees to observe whether the mixture flows, and taking the maximum water addition amount of a non-flowing group as the water absorption of the grouting material. The test can be carried out by controlling the water adding amount to obtain the most accurate water absorption test result.
5. Strength test
Weighing a proper amount of the grouting material to be tested in each embodiment, pouring the grouting material into a test mold of 70 mm to 70 mm for curing, taking out the cured grouting material, putting the grouting material into a mortar press, gradually pressurizing until a test piece is damaged, and recording the compressive strength;
weighing a proper amount of the grouting material to be tested in each embodiment, pouring the grouting material into a test mold filled with 70 mm to 70 mm sand, solidifying, taking out the solidified grouting material, putting the grouting material into a mortar press, gradually pressurizing until a test piece is damaged, and recording the bonding strength.
6. Density test
And weighing a proper amount of the grouting material to be detected in each embodiment, measuring the density by using a densimeter, and recording.
7. Fluidity test
And weighing a proper amount of the grouting material to be detected in each embodiment, measuring the viscosity by using a viscometer, and recording.
(IV) test results:
the test results are shown in table 1.
TABLE 1
Figure BDA0002947614630000091
Figure BDA0002947614630000101
The actual engineering verifies that the acrylic acid modified composite grouting material can completely block fine cracks below 0.05mm, can prevent water and block leakage under the conditions of large water volume and strong pressure, can effectively stabilize stratum such as silt, fine sand and sand gravel, and meets the technical requirements of preventing water and blocking leakage and having the functions of blocking water and reinforcing the stratum.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims (5)

1. The acrylic acid modified composite grouting material is characterized by comprising the following components: the component A, the component B and the component C are independently packaged;
the component A is a liquid material and consists of the following components: 80-120 parts of acrylic acid, 800-1200 parts of water, 5-10 parts of a first cross-linking agent, 200-300 parts of a first accelerator, 30-50 parts of a first initiator, 80-100 parts of a neutralizer and 50-150 parts of a polymer emulsion;
the polymer emulsion is acrylic emulsion; the neutralizing agent is caustic soda;
the first accelerator is acrylamide; the first cross-linking agent is methylene bisacrylamide; the first initiator is triethanolamine;
the component B is a powder material and consists of the following components: 15-25 parts of second accelerator, 10-20 parts of second initiator and 60-70 parts of second cross-linking agent;
the second initiator is at least one of sodium persulfate, ammonium persulfate and potassium persulfate;
the second promoter is magnesium aluminate;
the second crosslinking agent is magnesium oxide;
the component C comprises cement and bentonite;
the elongation at break of the grouting material is 100%, the elastic recovery rate is more than 97%, the water absorption rate is 300%, and the sand-fixing strength is 6.0MPa.
2. The acrylic modified composite grouting material of claim 1, wherein,
the weight ratio of the component B to the component C is 1: (0.1-1);
the weight ratio of the component B to the component A is 1: (0.9-1.1).
3. The preparation method of the acrylic modified composite grouting material as claimed in claim 1 or 2, characterized by comprising the following steps:
s1: uniformly mixing the acrylic acid, water, a first cross-linking agent, a first accelerator, a first initiator, a neutralizer and a polymer emulsion to obtain a component A; uniformly mixing the second accelerator, the second initiator and the second cross-linking agent to obtain the component B;
s2: and mixing the component B with water to obtain a component B mixed solution, and uniformly mixing the component B mixed solution, the component A and the component C to obtain the acrylic acid modified composite grouting material.
4. The preparation method of the acrylic modified composite grouting material as claimed in claim 3, wherein the weight ratio of water to the B component is (8-12): 1.
5. use of an acrylic modified composite grouting material according to claim 1 or 2 in seepage engineering with structural cracks of size 3.5mm or more and optionally including voids.
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CN115651571B (en) * 2022-10-19 2024-05-07 广州双虹建材有限公司 Environment-friendly organic composite grouting material and preparation method thereof
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