CN115448684A - Method for preparing fluid soil by utilizing sludge with high water content - Google Patents
Method for preparing fluid soil by utilizing sludge with high water content Download PDFInfo
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- CN115448684A CN115448684A CN202211189277.4A CN202211189277A CN115448684A CN 115448684 A CN115448684 A CN 115448684A CN 202211189277 A CN202211189277 A CN 202211189277A CN 115448684 A CN115448684 A CN 115448684A
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- sludge
- water content
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- 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
- C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Agronomy & Crop Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses a method for preparing fluid soil by utilizing high-water-content sludge. The method belongs to the field of civil engineering, and comprises the following steps of preparing raw materials of fly ash, high-water-content sludge, potassium hydroxide solution, potassium silicate solution and water; the feeding ratio of the fly ash to the high-water-content sludge is 1:10.0-15.0, wherein the feeding ratio of the potassium hydroxide solution to the potassium silicate solution to the sludge with high water content is 1:6.0-10.0; the total amount of the feed amount of the water added in the raw materials and the water contained in the sludge with high water content accounts for 35-55% of the total mass of the fly ash and the sludge with high water content; the method for preparing the fluid soil comprises the following steps: mixing and stirring the sludge with high water content and the fly ash; adding a potassium hydroxide solution and a potassium silicate solution; adding water, and continuously stirring to make the flow value of the mixture reach 120mm-220m to obtain the fluid soil. The invention can prepare the fluid-state soil product with good working performance, and can be applied to actual engineering in a large scale; the invention has wide application, can be used for backfilling and pouring of various foundation pits and mine pits, and can also be widely used in the field of reinforcement of road foundations, building foundations and the like.
Description
Technical Field
The invention belongs to the field of civil engineering, and relates to a resource utilization method of high-water-content sludge based on fluid soil; in particular to a method for preparing fluid soil by utilizing high-water-content sludge.
Background
In recent years, with the rapid development of urban construction, a large amount of sludge with high water content is brought in the process of river channel dredging and subway engineering construction. The reuse needs dehydration treatment, the cost is high, and the dehydrated soil still needs to be transported to a receiving yard to be stacked, thereby occupying land resources, having potential safety hazards and causing the waste of the soil resources. Meanwhile, the development of the building industry also enables the demand of cement to increase year by year, and the problems of high energy consumption and high carbon emission are brought.
Therefore, the high-water-content sludge can be recycled according to the preparation principle of the fluid soil, and the green low-carbon sustainable development requirements of saving cost and protecting environment are met.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a method for recycling sludge with high water content based on fluid soil, and aims to solve the problem of recycling a large amount of sludge with high water content.
The purpose of the invention is realized by the following technical scheme:
the invention relates to a fluid soil, which comprises the following raw materials of fly ash, high-water-content sludge, potassium hydroxide solution, potassium silicate solution and water;
the feeding ratio of the fly ash to the high-water-content sludge is 1:10.0-15.0;
the feeding ratio of the mixed solution containing the potassium hydroxide solution and the potassium silicate solution to the sludge with high water content is 1:6.0-10.0;
the total amount of the feed amount of the water added in the raw materials and the water contained in the sludge with high water content accounts for 35-55% of the total mass of the fly ash and the sludge with high water content.
Furthermore, the mass ratio of the potassium hydroxide solution to the potassium silicate solution is 1.5-6.0, wherein the modulus of the potassium hydroxide solution is 2.0-2.8mol/L, and the modulus of the potassium silicate solution is 12-16mol/L.
Further, the water content of the high-water-content sludge reaches 2-3 times of the liquid limit water content.
Further, the method for preparing the fluid soil by using the sludge with high water content comprises the following specific preparation steps:
the method comprises the following steps: preparing raw materials: measuring the water content of the prepared high-water-content sludge, and mixing and stirring the high-water-content sludge and the fly ash;
step two: preparing a potassium hydroxide solution and a potassium silicate solution, and sequentially adding the potassium hydroxide solution and the potassium silicate solution while stirring the mixture of the sludge with high water content and the fly ash;
step three: adding water into the mixed solution in the step (II), and continuously and uniformly stirring to enable the flow value of the mixed solution to reach 120mm-220m;
step four: and continuously and uniformly stirring the mixed solution to finally prepare the fluid soil with strong fluidity and self-sealing property.
Further, in the step (two), the preparation conditions of the potassium hydroxide solution and the potassium silicate solution are as follows: the preparation is completed at 25 +/-2 ℃ 24h in advance.
Further, in the step (iii), the mass of the added water is specifically: m is Additive for food ＝xm General assembly -m Sludge w；
In the formula, m Additive for food The mass of the required added water; x =0.35-0.55; m is General assembly The mass sum of the fly ash and the sludge with high water content; m is Sludge The quality of the sludge with high water content is obtained; and w is the water content of the sludge with high water content.
Has the advantages that: compared with the prior art, the invention has the characteristics that: the method can recycle a large amount of sludge with high water content, solves the problem of difficult treatment of the sludge with high water content, saves cost, and is green and environment-friendly. Meanwhile, the fluid soil prepared by utilizing the high-water-content sludge is wide in application, can be used for backfilling and pouring of various foundation pits and mine pits, and can also be widely used in the field of reinforcing road beds, building foundations and the like. This scheme has alleviateed and has dealt with the potential safety hazard that high moisture content silt was stacked and brought, and the current situation of environmental destruction can carry out resource utilization under the prerequisite of not handling by dehydration. Is favorable for saving energy and protecting ecology.
Detailed Description
In order to more clearly illustrate the technical solution of the present invention, the following further detailed description is made on the technical solution of the present invention:
the invention provides a fluidized soil preparation material, which comprises the following raw materials of fly ash, high-water-content sludge, potassium hydroxide, potassium silicate mixed solution and water;
the feeding ratio of the fly ash to the high-water-content sludge is 1:10.0-15.0.
Further, the mass ratio of the potassium hydroxide and potassium silicate mixed solution is 1; the modulus of the potassium hydroxide solution is 2.0-2.8, and the modulus of the potassium silicate solution is 12-16mol/L.
Further, the feeding ratio of the mixed solution containing the potassium hydroxide solution and the potassium silicate solution to the sludge with high water content is 1:6.0-10.0.
Further, the total amount of the fed amount of the water added in the raw materials and the water contained in the high-water-content sludge accounts for 35-55% of the mass of the raw materials; wherein the high water content sludge is about 364-420 parts; the addition of water during the mixing process makes it possible to obtain a product with better workability.
Further, the water content of the high-water-content sludge reaches 2-3 times of the liquid limit water content.
Furthermore, the fly ash has a promoting effect on treating the sludge with high water content.
Further, a method for preparing fluid soil by using sludge with high water content is characterized by comprising the following steps:
step one, preparing raw materials, namely measuring the water content of the sludge with high water content, and mixing and stirring the sludge with the fly ash;
step two, preparing a potassium hydroxide and potassium silicate mixed solution, and respectively adding the potassium hydroxide solution and the potassium silicate solution into the raw material in the step one while stirring according to the sequence;
step three, adding a proper amount of water, and uniformly stirring to enable the flow value to reach 120mm-220m;
step four: and continuously and uniformly stirring the mixed solution to finally prepare the high-fluidity and self-sealing fluid soil, namely the high-fluidity and self-sealing fluid soil.
Further, in the step (two), the preparation conditions of the potassium hydroxide solution and the potassium silicate solution are as follows: the preparation is completed at 25 +/-2 ℃ 24h in advance.
Further, the mass of the added water is specifically as follows: m is Additive for food ＝xm General (1) -m Sludge w；
In the formula, m Additive for food The mass of water added as required; x =0.35-0.55; m is a unit of General (1) The mass sum of the fly ash and the sludge with high water content; m is a unit of Sludge The sludge with high water content is obtained; w is the water content of the sludge with high water content.
The present solution is further explained below with reference to specific examples.
Specific examples 1-3 are the charge ratios of materials prepared using the method of preparing fluidized solidified soil from geopolymer provided by this scheme.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to those skilled in the art without departing from the principles of the present invention may be apparent to those skilled in the relevant art and are intended to be within the scope of the present invention.
Claims (6)
1. A fluidized soil is characterized in that: the raw materials comprise fly ash, high-water-content sludge, potassium hydroxide solution, potassium silicate solution and water;
the feeding ratio of the fly ash to the high-water-content sludge is 1:10.0-15.0;
the feeding ratio of the mixed solution containing the potassium hydroxide solution and the potassium silicate solution to the sludge with high water content is 1:6.0 to 10.0;
the total amount of the feed amount of the water added in the raw materials and the water contained in the sludge with high water content accounts for 35-55% of the total mass of the fly ash and the sludge with high water content.
2. The fluid soil of claim 1, wherein:
the mass ratio of the potassium hydroxide solution to the potassium silicate solution is 1.5-6.0, wherein the modulus of the potassium hydroxide solution is 2.0-2.8mol/L, and the modulus of the potassium silicate solution is 12-16mol/L.
3. The fluid soil of claim 1, wherein:
the water content of the sludge with high water content reaches 2-3 times of the liquid limit water content.
4. The method for preparing fluid soil by using the sludge with high water content as claimed in any one of claims 1 to 3, which is characterized by comprising the following specific preparation steps:
the method comprises the following steps: preparing raw materials: measuring the water content of the prepared sludge with high water content, and then mixing and stirring the sludge with high water content and the fly ash;
step two: preparing a potassium hydroxide solution and a potassium silicate solution, and sequentially adding the potassium hydroxide solution and the potassium silicate solution while stirring the mixture of the sludge with high water content and the fly ash;
step three: adding water into the mixed solution in the step (II), and continuously and uniformly stirring to enable the flow value of the mixed solution to reach 120mm-220m;
step four: and continuously and uniformly stirring the mixed solution to finally prepare the fluid soil with strong fluidity and self-sealing property.
5. The method for preparing fluid soil from high moisture content sludge according to any one of claim 4,
in the step (two), the preparation conditions of the potassium hydroxide solution and the potassium silicate solution are as follows: the preparation is completed 24h in advance under the condition of 25 +/-2 ℃.
6. The method for preparing fluidized soil using high water content sludge according to any one of claim 4,
in the step (three), the mass of the added water is specifically: m is a unit of Additive for food ＝xm General assembly -m Sludge w；
In the formula, m Additive for food The mass of the required added water; x =0.35-0.55; m is General assembly The mass sum of the fly ash and the sludge with high water content; m is a unit of Sludge The sludge with high water content is obtained; w is the water content of the sludge with high water content.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211189277.4A CN115448684A (en) | 2022-09-28 | 2022-09-28 | Method for preparing fluid soil by utilizing sludge with high water content |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211189277.4A CN115448684A (en) | 2022-09-28 | 2022-09-28 | Method for preparing fluid soil by utilizing sludge with high water content |
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| Publication Number | Publication Date |
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| CN115448684A true CN115448684A (en) | 2022-12-09 |
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| CN202211189277.4A Pending CN115448684A (en) | 2022-09-28 | 2022-09-28 | Method for preparing fluid soil by utilizing sludge with high water content |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116023078A (en) * | 2023-01-31 | 2023-04-28 | 南京苏逸实业有限公司 | Fluidized solidified soil prepared from engineering waste residue soil and method |
Citations (7)
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| CN102060480A (en) * | 2010-11-05 | 2011-05-18 | 中国科学院广州地球化学研究所 | Composite curing agent for dredged silt in watercourse |
| CN106082926A (en) * | 2016-06-12 | 2016-11-09 | 河海大学 | A kind of inorganic polymer sludge solidification mortar and preparation method thereof |
| CN106810090A (en) * | 2017-01-06 | 2017-06-09 | 哈尔滨工业大学深圳研究生院 | A kind of dregs geo-polymer curing materials and preparation method thereof |
| CN108218317A (en) * | 2018-01-19 | 2018-06-29 | 湖北工业大学 | A kind of high-moisture percentage sullage solidifying method |
| CN108298846A (en) * | 2018-04-16 | 2018-07-20 | 葛潇楠 | A kind of geopolymer gelled material and preparation method |
| CN112358249A (en) * | 2020-11-26 | 2021-02-12 | 中建三局绿色产业投资有限公司 | River silt base engineering soil and preparation method thereof |
| CN114349437A (en) * | 2022-03-16 | 2022-04-15 | 中国科学院生态环境研究中心 | Method for preparing road material from high-water-content sludge/engineering muck |
-
2022
- 2022-09-28 CN CN202211189277.4A patent/CN115448684A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102060480A (en) * | 2010-11-05 | 2011-05-18 | 中国科学院广州地球化学研究所 | Composite curing agent for dredged silt in watercourse |
| CN106082926A (en) * | 2016-06-12 | 2016-11-09 | 河海大学 | A kind of inorganic polymer sludge solidification mortar and preparation method thereof |
| CN106810090A (en) * | 2017-01-06 | 2017-06-09 | 哈尔滨工业大学深圳研究生院 | A kind of dregs geo-polymer curing materials and preparation method thereof |
| CN108218317A (en) * | 2018-01-19 | 2018-06-29 | 湖北工业大学 | A kind of high-moisture percentage sullage solidifying method |
| CN108298846A (en) * | 2018-04-16 | 2018-07-20 | 葛潇楠 | A kind of geopolymer gelled material and preparation method |
| CN112358249A (en) * | 2020-11-26 | 2021-02-12 | 中建三局绿色产业投资有限公司 | River silt base engineering soil and preparation method thereof |
| CN114349437A (en) * | 2022-03-16 | 2022-04-15 | 中国科学院生态环境研究中心 | Method for preparing road material from high-water-content sludge/engineering muck |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116023078A (en) * | 2023-01-31 | 2023-04-28 | 南京苏逸实业有限公司 | Fluidized solidified soil prepared from engineering waste residue soil and method |
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