CN111943625A - Soft soil curing agent - Google Patents
Soft soil curing agent Download PDFInfo
- Publication number
- CN111943625A CN111943625A CN202010848574.XA CN202010848574A CN111943625A CN 111943625 A CN111943625 A CN 111943625A CN 202010848574 A CN202010848574 A CN 202010848574A CN 111943625 A CN111943625 A CN 111943625A
- Authority
- CN
- China
- Prior art keywords
- soft soil
- curing agent
- equal
- less
- slag
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/142—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00732—Uses not provided for elsewhere in C04B2111/00 for soil stabilisation
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses a soft soil curing agent, which is prepared from raw material slag powder, industrial byproduct plaster of paris, zeolite powder, carbide slag, fly ash, super absorbent resin and a thickening time control agent according to the following mass percent: 30-40% of slag powder; 15-25% of industrial byproduct plaster; 10-15% of zeolite powder; 10-30% of carbide slag; 5-15% of fly ash; 1-5% of super absorbent resin; 0.01-0.2% of a coagulation regulator. The soft soil curing agent prepared by the invention, which takes industrial waste residues as main components, can replace cement to be applied to soft soil treatment, has the outstanding advantages of calcination-free, energy conservation, environmental protection and the like, has obvious price advantage compared with cement, plays a positive promoting role in resource utilization of fly ash, carbide slag, industrial byproduct gypsum and the like, and has wide and profound significance.
Description
Technical Field
The invention relates to the field of civil construction materials, in particular to a soft soil curing agent.
Background
The soft soil is generally viscous soil in a soft plastic and flow plastic state, and has the characteristics of high natural water content, large natural pore ratio, high compressibility, low shear strength, small consolidation coefficient, long consolidation time, high sensitivity, high disturbance, poor water permeability, complex soil layer distribution, large difference of physical and mechanical properties among layers and the like. Soft soil is a generic term of soil, and does not refer to a specific soil, and engineering often subdivides soft soil into soft cohesive soil, mucky soil, silt, peat soil, peat and the like.
Under the action of external load, the soft soil foundation can generate larger settlement and uneven deformation, so the soft soil needs to be cured, the physical and chemical structure of the soft soil is changed, the bearing capacity of the soft soil is improved, and the structural safety of a building is ensured. The curing agent is one of the important factors influencing the curing effect of the soft soil. The common method for reinforcing soft soil at present is a cement stirring method, cement is used as a curing agent, the mass of the cement accounts for 10 to 20 percent of that of undisturbed soil, slurry or mist powder is sprayed into the soft soil through a stirring machine, the cement is uniformly mixed in the soft soil, and the soft soil is cured into cement cured soil with higher bearing capacity in situ in the deep part of a foundation.
Since cement is mainly used as a cementing material for producing building materials such as concrete and mortar, and the application range of the cement is only extended as a soft soil curing agent, rather than a curing agent specially produced for the application scene of soft soil curing, the use of cement as a soft soil curing agent is not the most suitable application site. In other words, cement is not the most suitable curing agent for soft soil, and is only used as a bulk building material to facilitate the application of the curing agent for the curing of soft soil, and the use effect is sometimes also good, so that the cement is used as the curing agent in the curing of soft soil.
The rapid development of the cement industry brings the environmental problem which cannot be ignored, the pollution problem of different degrees can be generated in the cement production process, the energy and resource consumption required by the mountain cutting and stone splitting is huge, the water and soil loss and the ecological imbalance can be caused, and the deterioration of the natural environment is further aggravated.
Meanwhile, environmental pressure brought by large quantities of industrial solid wastes such as fly ash, carbide slag, industrial waste gypsum and the like is increasingly serious, and how to reasonably recycle the industrial solid wastes is the direction of efforts of many researchers in China all the time.
Disclosure of Invention
The invention aims to provide a soft soil curing agent which takes industrial waste residues as a main raw material, has low cost and excellent curing performance, and plays a positive promoting role in resource utilization of the industrial waste residues.
In order to achieve the purpose, the invention can adopt the following technical scheme:
the soft soil curing agent is prepared from raw material slag powder, industrial byproduct plaster of paris, zeolite powder, carbide slag, fly ash, super absorbent resin and a thickening time control agent according to the following mass percent:
30-40% of slag powder; 15-25% of industrial byproduct plaster; 10-15% of zeolite powder; 10-30% of carbide slag; 5-15% of fly ash; 1-5% of super absorbent resin; 0.01-0.2% of a coagulation regulator.
The specific surface area of the slag powder used by the invention is more than or equal to 400m2The activity index of the water/kg and 7d is more than or equal to 75 percent, and the water content is less than or equal to 1.0 percent.
The used fly ash has a sieve residue of a square hole sieve with a particle size of 45 mu m of less than or equal to 5 percent, a loss on ignition of less than or equal to 5.0 percent, a strength activity index of more than or equal to 70 percent and a water content of less than or equal to 1.0 percent.
The industrial byproduct plaster is prepared by mixing one or more of phosphogypsum, desulfurized gypsum, mold gypsum, fluorgypsum and titanium gypsum and then carrying out high-temperature treatment, wherein the screen residue of a 45-micron square-hole sieve is less than or equal to 5 percent. Wherein the total content of dihydrate gypsum and anhydrous gypsum is more than or equal to 80 percent, the treatment temperature is more than or equal to 150 ℃, and the treatment time is more than 2 hours.
The zeolite powder is dried zeolite powder, and the residue of a 45 mu m square-hole sieve is less than or equal to 10 percent.
The coagulation regulator is one or more of citric acid, sodium citrate, tartaric acid, potassium tartrate, sodium hexametaphosphate and sodium polyphosphate.
The water absorption rate of the used super absorbent resin is more than 150, and the particle size is less than or equal to 100 mu m. The super absorbent resin is a reticular high-molecular non-toxic polymer, has extremely strong water absorption performance, can generally absorb water which is more than 100 times of the volume of the resin, has the highest water absorption rate of more than 1000 times, is generally used as a medical material, such as a diaper, a sanitary towel and the like, and is also used as a plugging material in industry.
The used carbide slag is waste slag which is obtained by hydrolyzing carbide to obtain acetylene gas and takes calcium hydroxide as a main component, the waste slag is dried at the temperature of 150-200 ℃, the screen residue of a 45-micron square-hole sieve is less than or equal to 5 percent, the carbon content is less than or equal to 5 percent, and the waste slag is stored in a sealed manner.
When the finished curing agent prepared by the invention is used, the doping amount in soil is 5-25% according to different technical requirements.
After the soft soil curing agent prepared by the invention and taking industrial waste residues as main raw materials are mixed with soft soil, the super absorbent resin has extremely strong water absorption performance, can generally absorb water which is more than 100 times of the volume of the resin, has the highest water absorption rate of more than 1000 times, plays an important role in curing the soft soil with high water content, can quickly cure free water, quickly expand the volume and extrude soil particles to ensure that the structure is compact, provides a dense space and a low water-to-rubber ratio environment for generating mechanical strength for other components in the curing agent, and is favorable for the curing agent to exert the efficacy. The plaster of paris can also quickly solidify the free water in the soft soil, quickly generate dihydrate gypsum, enable the soil body to generate a structural framework, have certain strength, generate certain volume expansion in the changing process and fill gaps among soil particles. Then, the curing agent components are hydrated cooperatively, so that calcium silicate hydrate, ettringite and other products are gradually generated, the integral bearing capacity of the soil body is improved, and the stability of the cured soil is enhanced.
The soft soil curing agent prepared by the invention, which takes industrial waste residues as main components, can replace cement to be applied to soft soil treatment, has the outstanding advantages of calcination-free, energy conservation, environmental protection and the like, has obvious price advantage compared with cement, plays a positive promoting role in resource utilization of fly ash, carbide slag, industrial byproduct gypsum and the like, and has wide and profound significance.
Specifically, the beneficial effects of the invention are specifically as follows:
1. the raw materials adopted by the invention are all industrial waste residues, the cost is low, the raw material sources are wide, and the economic performance and the environmental protection performance are good. According to calculation, the cost of the soft soil curing agent prepared by the invention, which takes the industrial waste residue as the main raw material, is reduced by more than about 30 percent compared with cement, the price advantage is obvious, the industrial policies of energy conservation, emission reduction and green development in China are met, and the method has wide and profound significance for resource utilization of the industrial waste residue.
2. The soft soil curing agent prepared by the invention, which takes the industrial waste residues as the main raw material, can properly adjust the formula proportion according to the chemical components and properties of the construction site soil, has good adaptability with various soils, good road performance and wide application prospect.
3. The soft soil curing agent prepared by the invention and taking industrial waste residues as main raw materials has the characteristics of short condensation time, strong water-fixing capacity, high strength of cured soil and the like, can improve the adsorption force among soil particles, has the mutual synergistic effect of various components, and forms a strength framework among the soil particles by hydration products thereof, thereby further improving the bearing performance of the soil.
Detailed Description
The present invention is described in detail below with reference to specific examples to facilitate understanding and implementation for those skilled in the art.
The following examples are given for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. It will be apparent to those skilled in the art that other variations and modifications can be made in the invention without departing from the spirit of the invention, and it is intended to cover all such modifications and variations as fall within the true spirit of the invention.
The physicochemical data of the industrial waste residue raw materials used in the invention are shown in the following table 1-table 5:
table 1 main chemical composition of raw materials used
TABLE 2 Main physical parameters of the raw materials
TABLE 3 Main physical parameters of raw materials
TABLE 4 Main physical parameters of raw materials
TABLE 5 Main physical parameters of raw materials
The soil sample adopted in the embodiment of the invention is silty sludge at the Jianlu river side of Zhengtongxin Zhengzhou province of Henan province, and the basic parameters are shown in Table 6: the water content is 65%, the porosity is large, the compressibility is high, and the requirement of engineering construction cannot be met. Before the test, the soil sample is dried at 105 ℃ and sieved by a 0.5 cm sieve for standby.
TABLE 6 soil Performance parameters
Example 1
The soft soil curing agent is prepared from 30% of slag powder, 25% of industrial byproduct plaster, 11.95% of zeolite powder, 20% of carbide slag, 10% of fly ash, 3% of super absorbent resin and 0.05% of sodium citrate;
during preparation, firstly, slag powder, industrial byproduct plaster, zeolite powder, fly ash, super absorbent resin and sodium citrate are sequentially added into a stirrer, and are mixed at a high speed of 1500r/min for 30 min, finally, carbide slag is added, and the mixture is continuously stirred and mixed for 20 min, packaged and sealed for storage.
And (3) doping the prepared finished soft soil curing agent into soil according to a certain proportion of the dry weight of the soil, then adding water accounting for 65% of the dry weight of the soil, uniformly stirring, filling the mixture into a mold, naturally curing for 1d, demolding, filling the obtained sample into a plastic sealing bag, placing the plastic sealing bag into a standard curing chamber, curing to the required age, and measuring the unconfined compressive strength of 7d and 28 d. The test results are shown in Table 7 below.
Example 2
The soft soil curing agent is prepared from 40% of slag powder, 20% of industrial byproduct desulfurized gypsum, 15% of zeolite powder, 11.95% of carbide slag, 8% of fly ash, 5% of super absorbent resin and 0.05% of sodium citrate;
the preparation method is the same as example 1.
And (3) mixing the prepared finished soft soil curing agent into soil according to a certain proportion of the dry weight of the soil, adding water accounting for 65% of the dry weight of the soil, uniformly stirring, putting into a mold, naturally curing for 1d, demolding, putting the obtained sample into a plastic sealing bag, putting into a standard curing chamber, curing to the required age, and measuring unconfined compressive strength of 7d and 28 d. The test results are shown in Table 7 below.
Example 3
The soft soil curing agent is prepared from 35% of slag powder, 20% of industrial byproduct phosphogypsum, 11.99% of zeolite powder, 15% of carbide slag, 15% of fly ash, 3% of super absorbent resin and 0.01% of tartaric acid;
the preparation method is the same as example 1.
And (3) mixing the prepared finished soft soil curing agent into soil according to a certain proportion of the dry weight of the soil, adding water accounting for 65% of the dry weight of the soil, uniformly stirring, putting into a mold, naturally curing for 1d, demolding, putting the obtained sample into a plastic sealing bag, putting into a standard curing chamber, curing to the required age, and measuring unconfined compressive strength of 7d and 28 d. The test results are shown in Table 7 below.
Example 4
The soft soil curing agent is prepared from 35% of slag powder, 20% of industrial byproduct mold gypsum, 11.8% of zeolite powder, 15% of carbide slag, 15% of fly ash, 3% of super absorbent resin and 0.2% of sodium polyphosphate;
the preparation method is the same as example 1.
And (3) mixing the prepared finished soft soil curing agent into soil according to a certain proportion of the dry weight of the soil, adding water accounting for 65% of the dry weight of the soil, uniformly stirring, putting into a mold, naturally curing for 1d, demolding, putting the obtained sample into a plastic sealing bag, putting into a standard curing chamber, curing to the required age, and measuring unconfined compressive strength of 7d and 28 d. The test results are shown in Table 7 below.
Comparative example 1
The method comprises the steps of mixing Zhengzhou Tianrui cement (P.O 42.5.5 cement) into soil according to a certain proportion of dry weight of the soil, adding water with the dry weight of 65% of the dry weight of the soil, uniformly stirring, filling the mixture into a mould, naturally curing for 1d, demoulding, filling a sample into a plastic sealing bag, placing the plastic sealing bag into a standard curing chamber, curing to the required age, and measuring unconfined compressive strength of 7d and 28 d. The test results are shown in Table 7 below.
TABLE 7 solidified soil Performance test results
As can be seen from the data in Table 7, the unconfined compressive strengths of 7d and 28d of the soft soil curing agent prepared by taking the industrial waste residues as the main raw material are gradually increased along with the gradual increase of the addition amount; as a special curing agent for reinforcing soft soil, the curing agent has good curing performance, meets the technical requirements of engineering construction, adopts industrial waste residues as a main raw material, has low cost, conforms to the industrial policies of energy conservation, emission reduction and green development in China, and has important significance for resource utilization of the industrial waste residues.
Claims (8)
1. A soft soil curing agent is characterized in that: the water-based paint is prepared from raw material slag powder, industrial byproduct plaster of paris, zeolite powder, carbide slag, fly ash, super absorbent resin and a thickening time control agent according to the following mass percentage:
30-40% of slag powder; 15-25% of industrial byproduct plaster; 10-15% of zeolite powder; 10-30% of carbide slag; 5-15% of fly ash; 1-5% of super absorbent resin; 0.01-0.2% of a coagulation regulator.
2. A soft soil curing agent according to claim 1, wherein: the specific surface area of the slag powder is not less than400m2The activity index of the water/kg and 7d is more than or equal to 75 percent, and the water content is less than or equal to 1.0 percent.
3. A soft soil curing agent according to claim 1, wherein: the sieve residue of the 45-micron square-hole sieve of the fly ash is less than or equal to 5 percent, the ignition loss is less than or equal to 5.0 percent, the strength activity index is more than or equal to 70 percent, and the water content is less than or equal to 1.0 percent.
4. A soft soil curing agent according to claim 1, wherein: the industrial byproduct plaster is prepared by mixing one or more of phosphogypsum, desulfurized gypsum, mold gypsum, fluorgypsum and titanium gypsum and then carrying out high-temperature treatment, and the screen residue of a 45-micron square-hole sieve is less than or equal to 5 percent.
5. A soft soil curing agent according to claim 1, wherein: the zeolite powder is dried zeolite powder, and the residue of a 45 mu m square-hole sieve is less than or equal to 10 percent.
6. A soft soil curing agent according to claim 1, wherein: the coagulation regulator is one or more of citric acid, sodium citrate, tartaric acid, potassium tartrate, sodium hexametaphosphate and sodium polyphosphate.
7. A soft soil curing agent according to claim 1, wherein: the water absorption rate of the super absorbent resin is more than 150, and the particle size is less than or equal to 100 mu m.
8. A soft soil curing agent according to claim 1, wherein: the carbide slag is waste slag which is obtained by hydrolyzing carbide to obtain acetylene gas and takes calcium hydroxide as a main component, the waste slag is dried at the temperature of 150-200 ℃, the screen residue of a 45-micrometer square-hole sieve is less than or equal to 5%, the carbon content is less than or equal to 5%, and the waste slag is stored in a sealed manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010848574.XA CN111943625B (en) | 2020-08-21 | 2020-08-21 | Soft soil curing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010848574.XA CN111943625B (en) | 2020-08-21 | 2020-08-21 | Soft soil curing agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111943625A true CN111943625A (en) | 2020-11-17 |
| CN111943625B CN111943625B (en) | 2022-08-05 |
Family
ID=73358876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010848574.XA Active CN111943625B (en) | 2020-08-21 | 2020-08-21 | Soft soil curing agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111943625B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113046086A (en) * | 2021-03-11 | 2021-06-29 | 太原理工大学 | Formula and preparation method for adjusting humidity of super absorbent resin modified loess roadbed |
| CN113135730A (en) * | 2021-05-17 | 2021-07-20 | 浙江久豪建筑勘测设计有限公司 | Curing agent and curing process applied to soft soil foundation |
| CN113214835A (en) * | 2021-06-16 | 2021-08-06 | 中国电建集团华东勘测设计研究院有限公司 | Soil curing agent for roadbed filling |
| CN114573254A (en) * | 2022-02-24 | 2022-06-03 | 中国市政工程中南设计研究总院有限公司 | Sludge curing agent, composite material and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100648461B1 (en) * | 2006-05-01 | 2006-11-28 | (주)청해소재 | A solidification agent for soft ground and sludge improvement strengthen using industrial waste |
| CN103332910A (en) * | 2013-07-18 | 2013-10-02 | 东南大学 | Soft soil curing agent based on three industrial wastes |
| CN107572990A (en) * | 2017-08-28 | 2018-01-12 | 福建建工建材科技开发有限公司 | A kind of low-cost high-efficiency soft soil curing agent and preparation method and application |
| CN108218317A (en) * | 2018-01-19 | 2018-06-29 | 湖北工业大学 | A kind of high-moisture percentage sullage solidifying method |
| CN108675751A (en) * | 2018-05-25 | 2018-10-19 | 武汉大学 | A kind of environment-friendly type mud composite curing agent |
-
2020
- 2020-08-21 CN CN202010848574.XA patent/CN111943625B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100648461B1 (en) * | 2006-05-01 | 2006-11-28 | (주)청해소재 | A solidification agent for soft ground and sludge improvement strengthen using industrial waste |
| CN103332910A (en) * | 2013-07-18 | 2013-10-02 | 东南大学 | Soft soil curing agent based on three industrial wastes |
| CN107572990A (en) * | 2017-08-28 | 2018-01-12 | 福建建工建材科技开发有限公司 | A kind of low-cost high-efficiency soft soil curing agent and preparation method and application |
| CN108218317A (en) * | 2018-01-19 | 2018-06-29 | 湖北工业大学 | A kind of high-moisture percentage sullage solidifying method |
| CN108675751A (en) * | 2018-05-25 | 2018-10-19 | 武汉大学 | A kind of environment-friendly type mud composite curing agent |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113046086A (en) * | 2021-03-11 | 2021-06-29 | 太原理工大学 | Formula and preparation method for adjusting humidity of super absorbent resin modified loess roadbed |
| CN113046086B (en) * | 2021-03-11 | 2022-03-29 | 太原理工大学 | Formula and preparation method for adjusting humidity of super absorbent resin modified loess roadbed |
| CN113135730A (en) * | 2021-05-17 | 2021-07-20 | 浙江久豪建筑勘测设计有限公司 | Curing agent and curing process applied to soft soil foundation |
| CN113214835A (en) * | 2021-06-16 | 2021-08-06 | 中国电建集团华东勘测设计研究院有限公司 | Soil curing agent for roadbed filling |
| CN114573254A (en) * | 2022-02-24 | 2022-06-03 | 中国市政工程中南设计研究总院有限公司 | Sludge curing agent, composite material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111943625B (en) | 2022-08-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111943625B (en) | Soft soil curing agent | |
| CN109485368B (en) | Soft soil curing agent with high water content and application thereof | |
| CN108203281B (en) | Micro-expansion grouting material and preparation method thereof | |
| CN101602567B (en) | Waste mud solidification processing method based on polypropylene acetamide | |
| CN102899048B (en) | Desulfurated plaster caustic sludge soil soil curing agent | |
| CN109305785A (en) | A kind of high-strength utilizing solidified earth from sludge curing agent and preparation method thereof | |
| CN114230301A (en) | Phosphogypsum hardener and preparation method and application thereof | |
| CN113173769B (en) | Chemical foaming sludge light soil and production method thereof | |
| CN111606614A (en) | Filling material containing lithium mica slag and preparation method and application thereof | |
| CN111875312A (en) | Fluid state reclaimed material and preparation process thereof | |
| CN112194433A (en) | Construction waste recycled concrete | |
| CN114605121B (en) | Tungsten tailing autoclaved aerated concrete and preparation method thereof | |
| CN108821711A (en) | A kind of slope protection plant-growing type eco-concrete and preparation method thereof | |
| CN103965918A (en) | Curing agent for water quenching manganese slag mollisol | |
| CN112341082A (en) | Pervious concrete based on steel slag and recycled aggregate and preparation method thereof | |
| CN114163174B (en) | Solid waste base modified cementing material and application thereof | |
| CN115057641A (en) | Engineering waste soil-based regenerative functional aggregate and preparation method thereof | |
| CN108706944B (en) | Phosphogypsum light board prepared from barium slag and preparation method thereof | |
| CN110615654A (en) | Curing material for reinforcing soft soil foundation in low-temperature construction and application method thereof | |
| CN113354376A (en) | Phosphogypsum-based aggregate and preparation method thereof | |
| CN103113078A (en) | Pre-mixed building mortar making full use of solid wastes | |
| CN109553372B (en) | Preparation and use methods of recyclable phosphogypsum roadbed material | |
| CN103553466B (en) | FGD desulphurize fly ash solidifying agent and preparation method thereof | |
| CN104710140A (en) | Ore powder and sandy waste soil-doped compactness concrete and preparation method thereof | |
| CN1118535C (en) | Soil firming agent and its producing method |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |