CN111303895B - Anti-swelling composite soil stabilizer and preparation method thereof - Google Patents
Anti-swelling composite soil stabilizer and preparation method thereof Download PDFInfo
- Publication number
- CN111303895B CN111303895B CN201911385354.1A CN201911385354A CN111303895B CN 111303895 B CN111303895 B CN 111303895B CN 201911385354 A CN201911385354 A CN 201911385354A CN 111303895 B CN111303895 B CN 111303895B
- Authority
- CN
- China
- Prior art keywords
- soil
- swelling
- component
- stabilizer
- epoxy resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
-
- 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
- C09K2103/00—Civil engineering use
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses an anti-swelling composite soil curing agent and a preparation method thereof. The curing agent is divided into A, B two components, wherein the component A is solid powder; the component B is solution. The invention combines the characteristics of the inorganic expansive soil improver and the organic expansive soil improver to prepare the anti-swelling composite soil stabilizer. The inorganic component lime can obviously reduce the electromotive potential value on the interface of the fixed layer by replacing low-valence cations adsorbed around soil particles, promote aggregation and condensation among the soil particles to form a whole, and improve the stability and strength of the expansive soil water.
Description
Technical Field
The invention belongs to the field of road engineering, and particularly relates to an anti-swelling composite soil stabilizer and a preparation method thereof.
Background
The expansive soil is high-expansion-shrinkage soil, the particle composition of the expansive soil mainly comprises illite and montmorillonite which are minerals with strong hydrophilicity, the expansive soil has strong hygroscopicity, and after moisture absorption, the soil body expands and softens, and shrinks and cracks after dehydration, so that buildings, railways, highways, airports, hydraulic engineering and the like in an expansive soil area are often damaged greatly. The economic loss caused by the expansive soil in China reaches more than 1000 billion yuan every year, so the improvement of the expansive soil becomes a problem to be solved urgently. At present, various expansive soil improvement methods appear at home and abroad, and mainly comprise a physical improvement method, a chemical improvement method, a wet preserving method, a soil changing method and a biological improvement method. The chemical modifying method is characterized in that a chemical modifying agent is doped into expansive soil, so that the modifying agent and minerals in the expansive soil are subjected to chemical reaction, the mineral structure is damaged, the strength of the expansive soil is improved, and the expansion and contraction properties of the expansive soil are weakened, so that the engineering requirements are met. The chemical modification method is further classified into an inorganic modifier modification method and an organic modifier modification method. The method for improving the inorganic modifier mainly adopts cement, fly ash, lime, industrial waste residue and the like to be doped into the expansive soil, so that the thickness of a double-electrode layer of the expansive soil is reduced, and the effect of weakening the expansion and shrinkage of the expansive soil is further achieved. The organic modifying agent is prepared by adding neutralizer, sulfonated oil, acrylate series, epoxy resin series, etc. into expansive soil, so that the modifying agent is polymerized in soil to form high molecular polymer insoluble in soil and to improve the compression and expansion and contraction performance of expansive soil. Therefore, the research on the anti-swelling soil stabilizer suitable for popularization and application has important significance for reducing engineering construction loss.
The anti-swelling composite soil solidifying agent prepared by the invention is prepared by compounding the organic modifying agent and the inorganic modifying agent, effectively combines the characteristics of the two modifying agents, and has the advantages of low price, environmental friendliness, strong mechanical property, good water stability and high anti-swelling property. Ca produced by hydration reaction of inorganic component cement 2+ Ion exchange with soil particle cations is carried out, so that a large amount of soil particles form larger soil clusters. The result of the agglomeration is that the soil body is more compact, the particle link is more compact, and the strength is higher. The low-valence cations adsorbed around the soil particles are replaced by lime, so that the electrokinetic potential value on the interface of the fixed layer is obviously reduced, the aggregation and the condensation among the soil particles are promoted to form a whole, and the water stability and the strength of the expansive soil are improved. Montmorillonite in the expansive soil is a component with the strongest water absorption expansibility, but the upper part and the lower part of crystal layers of the montmorillonite are all oxygen ions, the crystal layers are connected through an oxygen bridge, the connection is very weak, and water molecules and other cations can easily enter so as to enlarge the space between the crystal layers. The chloride contains a large amount of cations and can be embedded into the crystal layer to extrude water molecules and form cation bonds with strong connecting force again, so that the hydration expansion effect of the soil is inhibited. Dispersing agent molecules in the organic component are dissolved in water to generate ionization, hydrophilic groups face soil particles, long carbon chain hydrophobic groups face outwards consistently, bound water adsorbed on the surfaces of the soil particles is basic, and a layer of hydrophobic water-in-water coating film is formed on the surfaces of the soil particles. The alkali activator is used for activating chemical reactions such as ion exchange, hydration, gel agglomeration and the like between cement, lime and expansive soil particles. The stabilizer inhibits the dispersion and migration of soil particles through the electrostatic attraction between positive charge groups on a macromolecular chain and the soil particles with negative charges, and plays a role in stabilizing the soil particles or the soil particles. The long chain molecules of the water-based epoxy emulsion can be exchanged to the surface of the soil particles to generate a shielding effect, so that the absorbed water in the soil particles is reduced, and the binding force among the soil particles is improved. The hydrophobic coupling agent forms a hydrophobic layer on the surface of the soil particles to prevent the soil particles from swelling and absorbing water.
Disclosure of Invention
The invention aims to provide an anti-swelling composite soil curing agent and a preparation method thereof.
In order to achieve the above purpose of the invention, the specific technical scheme provided by the invention is as follows:
an anti-swelling composite soil solidifying agent is divided into A, B two components, wherein the component A is solid powder, and the mixture ratio of the raw materials is as follows: lime: the mass ratio of the chloride is 1: 0.5-2: 0.005-0.01; the component B is a solution, 40-65 parts of water-based epoxy resin, 10-30 parts of an alkali activator, 0.5-2 parts of a coupling agent, 0.5-1 part of a dispersant and 0.5-5 parts of a stabilizer.
When the anti-swelling composite soil curing agent is used for curing swelling soil, the mixing ratio is 90-98 parts of swelling soil, 2-10 parts of A component and 0.02-0.1 part of B component.
A preparation method of an anti-swelling composite soil stabilizer comprises the following steps:
s1, accurately weighing cement, lime and chloride according to a ratio, and mechanically stirring for 30 min;
s2, preparing the waterborne epoxy resin: slowly dripping a proper amount of initiator into acrylic acid modified epoxy at the temperature of 80-100 ℃, heating to 180 ℃, reacting for 3-5 h, adding a certain amount of epoxy resin, continuing to react, and dripping deionized water at the temperature of 60-80 ℃ until the mixture becomes water-based epoxy resin emulsion;
preparation of S3 stabilizer: and adding a certain amount of epoxy chloropropane into a three-neck flask in a constant-temperature water bath at 25-50 ℃, and then slowly dropwise adding an amine solution. After the dropwise addition, raising the temperature to 60-75 ℃, adding a cross-linking agent and an initiator, and stirring for reaction for 2-5 hours. Cooling after the reaction is finished, and drying in a vacuum drying oven at the temperature of 80 ℃;
s4, weighing the stabilizer solution prepared in the step S3, slowly dropwise adding the stabilizer solution into the aqueous epoxy resin emulsion prepared in the step S2, stirring at room temperature for 1h, sequentially adding an alkali activator, a dispersing agent and a coupling agent, and continuously stirring at high speed for 2-5 h to obtain a component B of the anti-swelling soil curing agent;
the cement is any one or more of Portland cement, ordinary Portland cement and slag Portland cement.
The lime is quicklime.
The chloride is any one or more of potassium chloride, sodium chloride, calcium chloride or aluminum chloride.
The epoxy resin is any one of E51 or E44.
The acrylic acid modified epoxy acrylic acid epoxy copolymer emulsion.
The initiator is one or more of ammonium persulfate, cumene hydroperoxide, potassium persulfate, hydrogen peroxide and the like.
The amine solution is any one or more of methylamine, dimethylamine, tetraethylenepentamine and the like.
The cross-linking agent is selected from one or more of ethylenediamine, N' -methylene bisacrylamide, polyethylene glycol diacrylate, acrylic ester, polyethylene glycol diglycidyl ether, divinylbenzene or diisocyanate.
The alkali activator is selected from one or more of sodium silicate, calcium silicate and aluminum silicate.
The dispersing agent is selected from one or more of cationic surfactants such as octadecyl trimethyl ammonium chloride, hexadecyl trimethyl ammonium bromide and the like.
The coupling agent is selected from one or more of gamma-aminopropyltriethoxysilane or gamma-glycidoxypropyltrimethoxysilane.
The invention combines the characteristics of the inorganic expansive soil improver and the organic expansive soil improver to prepare the anti-swelling composite soil stabilizer. The inorganic component lime can obviously reduce the electromotive potential value on the interface of the fixed layer by replacing low-valence cations adsorbed around soil particles, promote aggregation and condensation among the soil particles to form a whole, and improve the stability and strength of the expansive soil water. Dispersing agent molecules in the organic component are dissolved in water to generate ionization, hydrophilic groups face soil particles, long carbon chain hydrophobic groups face outwards consistently, bound water adsorbed on the surfaces of the soil particles is basic, and a layer of hydrophobic water-in-water coating film is formed on the surfaces of the soil particles. The alkali activator is used for activating chemical reactions such as ion exchange, hydration, gel agglomeration and the like between cement, lime and expansive soil particles. The stabilizer inhibits the dispersion and migration of soil particles through the electrostatic attraction between positive charge groups on a macromolecular chain and the soil particles with negative charges, and plays a role in stabilizing the soil particles or the soil particles. The long chain molecules of the water-based epoxy emulsion can be exchanged to the surface of the soil particles to generate a shielding effect, so that the absorbed water in the soil particles is reduced, and the binding force among the soil particles is improved. The hydrophobic coupling agent forms a hydrophobic layer on the surface of the soil particles to prevent the soil particles from swelling and absorbing water.
Detailed Description
The present invention will be further illustrated with reference to the following examples, but the present invention is not limited to the following examples.
Example 1
Accurately weighing cement, lime and chloride, and then mechanically stirring for 30min, wherein the cement: lime: the mass ratio of the potassium chloride is 1:0.5:0.007.
Slowly dropwise adding a stabilizer into the aqueous epoxy resin emulsion, stirring at room temperature for 1h, sequentially adding an alkali activator, a dispersing agent and a coupling agent, and continuously stirring at high speed for 5h, wherein the aqueous epoxy resin emulsion comprises 40 parts of self-made aqueous epoxy resin, 10 parts of sodium silicate, 0.6 part of gamma-aminopropyltriethoxysilane, 0.5 part of octadecyl trimethyl ammonium chloride and 0.7 part of self-made stabilizer.
Example 2
Accurately weighing cement, lime and chloride, and then mechanically stirring for 30min, wherein the cement: lime: the mass ratio of the potassium chloride is 1:0.5:0.007.
And slowly dropwise adding a stabilizer into the aqueous epoxy resin emulsion, stirring at room temperature for 1h, sequentially adding an alkali activator, a dispersant and a coupling agent, and continuously stirring at high speed for 5h, wherein 50 parts of self-made aqueous epoxy resin, 15 parts of sodium silicate, 0.6 part of gamma-aminopropyltriethoxysilane, 0.5 part of hexadecyltrimethylammonium chloride and 0.7 part of self-made stabilizer are added.
Example 3
Accurately weighing cement, lime and chloride, and then mechanically stirring for 30min, wherein the cement: lime: the mass ratio of the potassium chloride is 1:0.5:0.007.
Slowly dropwise adding a stabilizer into the aqueous epoxy resin emulsion, stirring at room temperature for 1h, sequentially adding an alkali activator, a dispersing agent and a coupling agent, and continuously stirring at high speed for 4h, wherein 50 parts of self-made aqueous epoxy resin, 15 parts of calcium silicate, 0.6 part of gamma-glycidyl ether oxypropyl trimethoxysilane, 0.8 part of hexadecyl trimethyl ammonium chloride and 0.7 part of self-made stabilizer are added.
Example 4
Accurately weighing cement, lime and chloride, and then mechanically stirring for 30min, wherein the cement: lime: the mass ratio of the potassium chloride is 1:0.5:0.007.
Slowly dropwise adding a stabilizer into the aqueous epoxy resin emulsion, stirring at room temperature for 1h, sequentially adding an alkali activator, a dispersant and a coupling agent, and continuously stirring at high speed for 4h, wherein the aqueous epoxy resin emulsion comprises 60 parts of self-made aqueous epoxy resin, 20 parts of calcium silicate, 1 part of gamma-glycidyl ether oxypropyltrimethoxysilane, 0.8 part of hexadecyltrimethylammonium chloride and 1 part of self-made stabilizer.
The solidified soil obtained in the embodiment 1-4 is subjected to free expansion rate and unconfined compressive strength tests, and the mixture ratio of the solidified soil is as follows: 96 parts of expansive soil, 4 parts of a curing agent A component and 0.02 part of a curing agent B component.
Free expansion ratio test: and (3) placing a proper amount of soil sample in an oven to be dried until the mass is constant, taking out and crushing, sieving by a 5mm sieve, dividing into two parts, taking one part as the vegetable expansive soil, and adding the soil curing agent into the other part. And (3) calculating the required soil curing agent A component and B component according to the mass percent of dry soil, uniformly mixing, putting into a plastic bag, sealing for a day and a night, taking out, drying in an oven at 105-110 ℃, and cooling in a dryer to room temperature for test. The free expansion test was carried out according to geotechnical test method Standard (GB/T50123-1999) with a specimen height of 78mm and a diameter of 39.1mm, and 6 parallel specimens were prepared for each test.
Unconfined compressive strength test: according to the test operation method of inorganic binder stable material test regulation, a cylindrical test piece with the diameter-height ratio of 1:1 is manufactured. Fine soil, the diameter of the test mould is 50mm and 50 mm; medium-grained soil, the diameter of the test mould is 100mm and 100 mm; coarse-grained soil, test mold diameter 150 mm. Carrying out standard health preserving for 7 days by using a standard health preserving method, and soaking water on the last day of the age. In order to ensure the reliability and accuracy of test results, no less than 6 test pieces are arranged in each group.
The test results are shown in table 1:
| content of test | Example 1 | Example 2 | Example 3 | Example 4 | Comparative example |
| Free swell ratio/% | 18.56 | 20.21 | 11.69 | 9.07 | 41.37 |
| 7d unconfined compressive strength/MPa | 1.26 | 1.24 | 1.52 | 1.68 | 0.83 |
The comparative example is 96 parts of expansive soil and 4 parts of curing agent A component.
As can be seen from Table 1, the anti-swelling composite soil stabilizer prepared by the invention has a good effect of inhibiting the hydration and swelling reactions of the swelled soil, and can enhance the compressive strength of the solidified soil.
Claims (3)
1. The application of the anti-swelling composite soil stabilizer for curing swelling soil is characterized in that: the anti-swelling composite soil solidifying agent is divided into A, B two components, wherein the component A is solid powder, and the mixture ratio of the raw materials is cement: lime: the mass ratio of the chloride is 1: 0.5-2: 0.005-0.01; the component B is a solution, 40-65 parts of water-based epoxy resin, 10-30 parts of an alkali activator, 0.5-2 parts of a coupling agent, 0.5-1 part of a dispersant and 0.5-5 parts of a stabilizer;
when the curing agent is used for curing expansive soil, the mixing ratio is 90-98 parts of expansive soil, 2-10 parts of component A and 0.02-0.1 part of component B;
the preparation of the anti-swelling soil stabilizer comprises the following steps,
s1, accurately weighing the cement, the lime and the chloride according to the mixture ratio, and mechanically stirring for 30min to obtain a component A;
s2 preparation of waterborne epoxy resin: slowly dripping a proper amount of initiator into acrylic acid modified epoxy at the temperature of 80-100 ℃, heating to 180 ℃, reacting for 3-5 h, adding a certain amount of epoxy resin, continuing to react, and dripping deionized water at the temperature of 60-80 ℃ until the mixture becomes water-based epoxy resin emulsion;
preparation of S3 stabilizer: in a constant-temperature water bath at 25-50 ℃, adding a certain amount of epoxy chloropropane into a three-neck flask, and then slowly dropwise adding an amine solution; after the dropwise addition is finished, raising the temperature to 60-75 ℃, adding a cross-linking agent and an initiator, and stirring for reaction for 2-5 hours; cooling after the reaction is finished, and drying in a vacuum drying oven at 80 ℃;
s4, slowly dripping the stabilizer solution prepared in the step S3 into the aqueous epoxy resin emulsion prepared in the step S2, stirring at room temperature for 1h, sequentially adding an alkali activator, a dispersant and a coupling agent, and continuously stirring at high speed for 2-5 h to obtain a component B of the anti-swelling soil curing agent;
the cement is Portland cement or slag Portland cement;
the lime is quicklime;
the chloride is potassium chloride;
the epoxy resin is any one of E51 or E44;
the acrylic acid modified epoxy is acrylic acid epoxy copolymer emulsion;
the initiator is any one or more of ammonium persulfate, cumene hydroperoxide, potassium persulfate and hydrogen peroxide;
the amine solution is any one or more of methylamine, dimethylamine and tetraethylenepentamine;
the cross-linking agent is selected from one or more of ethylenediamine, N' -methylene bisacrylamide, polyethylene glycol diacrylate, acrylic ester, polyethylene glycol diglycidyl ether, divinylbenzene or diisocyanate;
the coupling agent is gamma-glycidoxypropyltrimethoxysilane.
2. The use of the anti-swelling composite soil stabilizer according to claim 1 for stabilizing swelling soil, wherein: the alkali activator is selected from one or more of sodium silicate, calcium silicate and aluminum silicate.
3. The use of the anti-swelling composite soil stabilizer according to claim 1 for stabilizing swelling soil, wherein: the dispersing agent is selected from one or more of octadecyl trimethyl ammonium chloride and hexadecyl trimethyl ammonium bromide surfactants.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911385354.1A CN111303895B (en) | 2019-12-28 | 2019-12-28 | Anti-swelling composite soil stabilizer and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911385354.1A CN111303895B (en) | 2019-12-28 | 2019-12-28 | Anti-swelling composite soil stabilizer and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111303895A CN111303895A (en) | 2020-06-19 |
| CN111303895B true CN111303895B (en) | 2022-09-02 |
Family
ID=71154470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911385354.1A Active CN111303895B (en) | 2019-12-28 | 2019-12-28 | Anti-swelling composite soil stabilizer and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111303895B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112662403A (en) * | 2020-12-23 | 2021-04-16 | 昂骏环境科技(上海)有限公司 | Method for preparing soil fixing agent by using modified clay |
| CN112811861B (en) * | 2021-02-23 | 2022-08-02 | 金堂波森特新材料有限公司 | Composite stable curing agent for expansive soil treatment and use method thereof |
| CN113105898A (en) * | 2021-02-25 | 2021-07-13 | 南京工程学院 | Soil stabilizer and preparation method and application thereof |
| CN114635325A (en) * | 2022-04-18 | 2022-06-17 | 浙江中桓建设有限公司 | Method for reinforcing roadbed by using soil curing agent |
| CN117304941A (en) * | 2023-11-07 | 2023-12-29 | 长沙中科盛联新材料有限公司 | Composite soil curing agent and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09137160A (en) * | 1995-11-14 | 1997-05-27 | Nippon Anzen Keibi Kk | Soil conditioner |
| NZ562800A (en) * | 2005-05-07 | 2010-06-25 | Geohumus Internat Res & Dev Gm | Soil additive comprising a water-swellable hybrid polymer matrix which incorporates solid inorganic materials |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100341979C (en) * | 2006-05-12 | 2007-10-10 | 河海大学 | Hexadecyl trimethyl ammonium bromide expansive soil improvement agent |
| CN105442409B (en) * | 2015-12-31 | 2018-09-25 | 中城投集团第五工程局有限公司 | Water-base epoxy solidified earth, its application and solidified earth road deck |
| CN109233864A (en) * | 2018-11-20 | 2019-01-18 | 江苏路业新材料有限公司 | A kind of soil curing agent and preparation method thereof |
| CN109486498B (en) * | 2019-01-09 | 2021-03-12 | 南京大学 | Self-repairing functional soil curing agent and preparation method thereof |
| CN110128063A (en) * | 2019-05-13 | 2019-08-16 | 中国地质大学（武汉） | Swelled ground reinforcing mode based on polymer matrix composites |
-
2019
- 2019-12-28 CN CN201911385354.1A patent/CN111303895B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09137160A (en) * | 1995-11-14 | 1997-05-27 | Nippon Anzen Keibi Kk | Soil conditioner |
| NZ562800A (en) * | 2005-05-07 | 2010-06-25 | Geohumus Internat Res & Dev Gm | Soil additive comprising a water-swellable hybrid polymer matrix which incorporates solid inorganic materials |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111303895A (en) | 2020-06-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111303895B (en) | Anti-swelling composite soil stabilizer and preparation method thereof | |
| CN109626925B (en) | Preparation method of phosphogypsum roadbed material based on high-temperature activation and hydraulic property improvement | |
| CN109486498B (en) | Self-repairing functional soil curing agent and preparation method thereof | |
| Ahmari et al. | Utilization of mine tailings as road base material | |
| CN109305792B (en) | Soil curing agent, preparation method and soil curing construction method | |
| CN112830698B (en) | Method for preparing baking-free geopolymer material by utilizing spodumene flotation tailings acid-thermal excitation | |
| CN107010919A (en) | A kind of energy-conserving and environment-protective construction material and preparation method thereof | |
| CN111847976B (en) | Preparation and application of anti-cracking and anti-seepage composite additive for concrete | |
| CN114477926B (en) | Fluid solidified soil based on slurry shield waste slurry and muck and preparation method thereof | |
| CN114436570B (en) | Roadbed filling material and preparation method thereof | |
| CN109574583B (en) | High-strength concrete and preparation method thereof | |
| CN108585576B (en) | Phosphogypsum curing agent | |
| CN116789389A (en) | Phosphogypsum curing agent based on cement-based material and cement-based roadbed material adopting phosphogypsum curing agent | |
| CN111978963A (en) | Soil solidifying composition, preparation method and application thereof | |
| CN113603387B (en) | Waterproof concrete synergist and preparation method thereof | |
| CN111747715B (en) | Semi-permeable emulsified asphalt mixture and preparation method thereof | |
| CN112225512A (en) | Soil curing agent and using method thereof | |
| CN111302744A (en) | Self-repairing high-abrasion-resistance concrete with impact and abrasion resistance and preparation method thereof | |
| CN115650631B (en) | Waterproof compacting agent for concrete and preparation method thereof | |
| CN112624700B (en) | Road composite water stabilizing material and preparation method thereof | |
| CN109384360B (en) | Bentonite-water glass material and use method thereof in sludge solidification | |
| CN116425563B (en) | Bauxite tailing-based foam light soil and preparation method thereof | |
| CN110372283B (en) | High-strength concrete and preparation method thereof | |
| CN114031332B (en) | High-density asphalt concrete and preparation method thereof | |
| CN115650637B (en) | Reactive cold repair asphalt mixture and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Jiang Yu Inventor after: Nie Lei Inventor after: Fu Xiaojian Inventor after: Sun Liqian Inventor after: Wang Kaili Inventor after: Wang Jie Inventor after: Yu Chunbo Inventor after: Gao Yi Inventor after: Guo Fei Inventor after: Lu Bin Inventor after: Kong Heng Inventor after: Hu Song Inventor after: Zhang Zhiye Inventor after: Yu Yang Inventor after: Zhang Jie Inventor after: Shi Lei Inventor before: Guo Fei Inventor before: Fu Xiaojian Inventor before: Sun Liqian Inventor before: Wang Kaili Inventor before: Wang Jie Inventor before: Yu Chunbo Inventor before: Gao Yi Inventor before: Kong Heng Inventor before: Hu Song Inventor before: Jiang Yu Inventor before: Zhang Zhiye Inventor before: Yu Yang Inventor before: Zhang Jie Inventor before: Shi Lei Inventor before: Nie Lei |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |