CN115231890A - Premixed fluid solidified soil and preparation method and application thereof - Google Patents
Premixed fluid solidified soil and preparation method and application thereof Download PDFInfo
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- CN115231890A CN115231890A CN202210778478.1A CN202210778478A CN115231890A CN 115231890 A CN115231890 A CN 115231890A CN 202210778478 A CN202210778478 A CN 202210778478A CN 115231890 A CN115231890 A CN 115231890A
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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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- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/10—Burned or pyrolised refuse
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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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
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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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
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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
- C04B7/00—Hydraulic cements
- C04B7/02—Portland cement
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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
- 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
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- 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)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides premixed fluidized solidified soil and a preparation method and application thereof, wherein the premixed fluidized solidified soil is prepared by using municipal solid waste incinerator slag and building muck as main raw materials, so that a large amount of municipal solid waste incinerator slag and building muck can be effectively consumed to recycle waste resources, and meanwhile, the invention provides a building material which is used for various projects such as foundation pit and foundation cushion laying and backfilling construction.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to premixed fluid-state solidified soil and a preparation method and application thereof.
Background
In recent years, with the rapid development of urban construction and the rapid growth of urban population, urban domestic garbage also increases year by year, the pressure of domestic garbage treatment is more and more large, and simultaneously, a plurality of new problems are faced, garbage classification can be used for pertinently treating different types of garbage, and the pressure of garbage treatment is relieved to a certain extent.
Further, the municipal waste not only includes waste generated in people's life, but also includes some construction waste, which includes waste residue, waste soil, sludge, etc., which is not helpful to the construction itself and needs to be treated correspondingly, moreover, our country is in the period of high-speed development of urban construction, and inevitably generates a large amount of construction waste, at present, most of our country construction waste can be transported to the outsides, and a simple stacking or landfill treatment mode is adopted, the stacking of the construction waste can occupy a large amount of land resources, and meanwhile, the problems of dust generated in the processes of clearing, transporting and stacking can cause serious environmental pollution.
Therefore, there is a need for developing an effective resource recycling method, which can consume a large amount of domestic waste incineration slag or construction waste, and achieve the purpose of changing waste into valuable.
Disclosure of Invention
The invention aims to provide premixed fluidized solidified soil and a preparation method and application thereof, which mainly utilize municipal solid waste incinerator slag and building muck to prepare the premixed fluidized solidified soil, consume a large amount of accumulated municipal solid waste incinerator slag and building muck so as to recycle waste resources, and provide a building material for construction, so as to be applied to various projects such as foundation pit, foundation mat laying, backfilling construction and the like.
The premixed fluid-state solidified soil is a mixture which is capable of being stored, transported, pumped and solidified to reach certain strength and is formed by adding a certain amount of curing agent and water into the soil and uniformly mixing the mixture by a specific stirrer, and the premixed fluid-state solidified soil is widely applied to various building projects.
The invention utilizes the building residue soil generated in the building process as a raw material, can fetch the soil on the spot, is beneficial to consuming the building garbage and avoids the transportation and accumulation of the building garbage; meanwhile, fine aggregate and ground ash of the municipal solid waste incinerator slag are used as raw materials and curing agent active ingredients to jointly prepare the premixed fluidized solidified soil, so that the municipal solid waste incinerator slag is consumed, waste resources are effectively utilized, and a building material with certain strength is obtained.
Specifically, the invention provides premixed fluid solidified soil which comprises the following components in parts by weight: the municipal solid waste incinerator slag fine aggregate, the building residue soil, a curing agent and water, wherein the municipal solid waste incinerator slag fine aggregate and the building residue soil are used as main raw materials, and the mass ratio of the fine aggregate to the building residue soil is 1: (0.25-4), the mass of the curing agent is 10-30% of the sum of the fine aggregate of the municipal solid waste incinerator slag and the construction slag soil, and the mass of the water is 50-150% of the total mass of the fine aggregate of the municipal solid waste incinerator slag, the construction slag soil and the curing agent.
Further, in the present invention, the curing agent is a mixture of portland cement, fine ground ash of municipal solid waste incinerator slag and/or slag, wherein the mass of portland cement is 20-50% of the mass of the curing agent, and the mass of the fine ground ash of municipal solid waste incinerator slag and/or slag is 50-80% of the mass of the curing agent.
Further, in the invention, the mass ratio of the ground fine ash of the aged municipal solid waste incinerator slag to the slag is less than or equal to 2.3.
Further, in the invention, the solidified soil also comprises an exciting agent, the mass of the exciting agent added is 18% of the mass of the ground fine ash or the slag of the municipal solid waste incinerator slag, the exciting agent is a mixture of sodium silicate, sodium hydroxide and calcium hydroxide, and the mass ratio of the sodium silicate to the sodium hydroxide to the calcium hydroxide is 16.
Further, in the invention, the solidified soil also comprises an early strength agent, the mass of the early strength agent is 1-2% of that of the solidifying agent, the early strength agent is a mixture of calcium chloride and sodium sulfate, and the mass ratio of the calcium chloride to the sodium sulfate is 3:2.
furthermore, in the invention, the solidified soil also comprises a flowing agent, the mass of the flowing agent is 1.5-2.5% of that of the solidifying agent, and the flowing agent is a high-performance polycarboxylic acid water reducing agent.
The invention also provides a method for preparing the premixed fluid solidified soil, which comprises the following steps:
step one, screening the municipal solid waste incinerator slag by a 4.75mm sieve to obtain fine aggregate of the municipal solid waste incinerator slag;
and step two, uniformly mixing the building residue soil, the fine aggregate of the municipal solid waste incinerator slag, the curing agent and water according to a preset mass ratio to obtain the premixed fluidized curing soil.
Further, in the second step, the curing agent is a mixture of portland cement, fine ground ash of municipal solid waste incinerator slag and slag, wherein the municipal solid waste incinerator slag is ground by a ball mill and sieved by a 1.25mm sieve to obtain the fine ground ash of the municipal solid waste incinerator slag.
The invention also provides application of the premixed fluid solidified soil, and the premixed fluid solidified soil is used as a building material for foundation pit, foundation cushion pavement or backfill construction.
The invention has the beneficial effects that:
1. the invention adopts the municipal solid waste incineration slag and the building residue soil as main raw materials and various wastes as auxiliary raw materials to prepare the premixed flow-state solidified soil, realizes the cooperative treatment of the various wastes, and provides a new solution for 'waste-free cities'.
2. The invention adopts the building residue soil as the raw material to prepare the premixed flow-state solidified soil, can convert and utilize the building residue soil on site, can reduce the engineering cost, reduce the land occupation and avoid the environmental pollution.
3. The urban domestic garbage incinerator slag fine grinding ash is used as a curing agent active component, because the urban domestic garbage incinerator slag fine grinding ash contains a large amount of oxides such as silicon oxide, calcium oxide and the like, hydration action and volcanic ash reaction similar to cement materials can occur, particularly, after ball milling, the hydration activity of the urban domestic garbage incinerator slag fine grinding ash is greatly improved, so that the urban domestic garbage incinerator slag fine grinding ash can replace part of cement or slag, and the urban domestic garbage incinerator slag fine grinding ash subjected to pre-aging treatment fully exerts the hydration activity and the volcanic ash reaction under the action of an active exciting agent; meanwhile, the ground fine ash of the municipal solid waste incineration filter slag can be mixed with slag and cement particles to fully fill a gap structure between fine aggregate of the municipal solid waste incineration filter slag and a building slag soil framework, so that the homogenization degree of the premixed flow state solidified soil is improved, and the premixed flow state solidified soil is formed into a solidified object with certain mechanical strength after a certain hydration age.
Drawings
FIG. 1 is a flow chart of a fifth preferred embodiment of the present invention for preparing ready-mixed fluidized solidified soil.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the flow charts in the embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Example one
Step one, screening municipal solid waste incineration slag through a 4.75mm sieve to obtain municipal solid waste incineration fine aggregate;
and step two, feeding the fine aggregate of the municipal solid waste incinerator slag, the building residue soil, the curing agent, the excitant and water into a stirrer according to a preset mass ratio, and uniformly stirring to obtain the premixed fluidized solidified soil.
Further, in the second step of this embodiment, the mass ratio of the fine aggregate of the municipal solid waste incineration slag to the construction waste is 1:0.5; the mass of the added curing agent is 10 percent of the sum of the mass of the fine aggregate of the municipal solid waste incinerator slag and the mass of the building slag soil, the mass of the added water is 200 percent of the sum of the total mass of the fine aggregate of the municipal solid waste incinerator slag, the mass of the added water and the mass of the added exciting agent is 18 percent of the mass of the fine ash of the municipal solid waste incinerator slag.
And (3) in the second step, grinding the municipal solid waste incinerator slag by using a ball mill, and sieving by using a 1.25mm sieve to obtain the fine ground ash of the municipal solid waste incinerator slag.
Further, in the present embodiment, the curing agent is a mixture of 42.5R ordinary portland cement and ground fine ash of slag from the municipal solid waste incinerator, and 42.5R ordinary portland cement accounts for 20% by mass of the curing agent, and ground fine ash of slag from the municipal solid waste incinerator accounts for 80% by mass of the curing agent.
Further, in the present embodiment, the activator is a mixture of sodium silicate, sodium hydroxide and calcium hydroxide, and their mass ratio is 16. (preferably sodium silicate 1.6 moulds).
Example two
Step one, screening the municipal solid waste incineration slag through a 4.75mm sieve to obtain fine aggregate of the municipal solid waste incineration slag;
and step two, feeding the fine aggregate of the municipal solid waste incinerator slag, the building residue soil, the curing agent, the excitant and water into a stirrer according to a preset mass ratio, and uniformly stirring to obtain the premixed fluidized solidified soil.
Further, in the second step of this embodiment, the mass ratio of the fine aggregate of the municipal solid waste incineration slag to the construction waste is 1:1; the added curing agent accounts for 30% of the total mass of the fine aggregate of the municipal solid waste incinerator slag and the building residue soil, the added water accounts for 180% of the total mass of the fine aggregate of the municipal solid waste incinerator slag, the building residue soil and the curing agent, and the added excitant accounts for 18% of the mass of the fine ground ash of the municipal solid waste incinerator slag.
And (3) in the second step, grinding the municipal solid waste incinerator slag by using a ball mill, and sieving by using a 1.25mm sieve to obtain the fine ground ash of the municipal solid waste incinerator slag.
Further, in the present embodiment, the curing agent is a mixture of 42.5R portland cement and the fine ground ash of the slag of the municipal solid waste incinerator, and the 42.5R portland cement accounts for 50% by mass of the curing agent, and the fine ground ash of the slag of the municipal solid waste incinerator accounts for 50% by mass of the curing agent.
Further, in the present embodiment, the activator is a mixture of sodium silicate, sodium hydroxide and calcium hydroxide, and their mass ratio is 16. (preferably, sodium silicate is 1.6 moulds).
EXAMPLE III
Step one, screening municipal solid waste incineration slag by a 4.75mm sieve to obtain municipal solid waste incineration fine aggregate;
and step two, feeding the fine aggregate of the municipal solid waste incinerator slag, the building residue soil, the curing agent, the excitant and water into a stirrer according to a preset mass ratio, and uniformly stirring to obtain the premixed fluidized solidified soil.
Further, in the second step of this embodiment, the mass ratio of the fine aggregate of the municipal solid waste incinerator slag to the construction slag soil is 1:4; the mass of the added curing agent is 25 percent of the sum of the mass of the fine aggregate of the municipal solid waste incinerator slag and the mass of the building slag soil, the mass of the added water is 130 percent of the sum of the total mass of the fine aggregate of the municipal solid waste incinerator slag, the mass of the added water and the mass of the added exciting agent is 18 percent of the mass of the fine ash of the municipal solid waste incinerator slag.
And (3) in the second step, grinding the municipal solid waste incinerator slag by using a ball mill, and sieving by using a 1.25mm sieve to obtain the fine ground ash of the municipal solid waste incinerator slag.
Further, in the present embodiment, the curing agent is a mixture of 42.5R ordinary portland cement, pulverized ash of municipal solid waste incinerator slag, and 42.5R ordinary portland cement accounts for 40% by mass of the curing agent, and the total mass of the pulverized ash of municipal solid waste incinerator slag and slag accounts for 60% by mass of the curing agent, wherein the mass ratio of the pulverized ash of municipal solid waste incinerator slag to the slag is 0.8.
Further, in the present embodiment, the activator is a mixture of sodium silicate, sodium hydroxide and calcium hydroxide, and their mass ratio is 16. (preferably, sodium silicate is 1.6 moulds).
Example four
Step one, screening municipal solid waste incineration slag by a 4.75mm sieve to obtain municipal solid waste incineration fine aggregate;
and step two, feeding the fine aggregate of the municipal solid waste incinerator slag, the building residue soil, the curing agent, the excitant and water into a stirrer according to a preset mass ratio, and uniformly stirring to obtain the premixed fluidized solidified soil.
Further, in the second step of this embodiment, the mass ratio of the fine aggregate of the municipal solid waste incinerator slag to the construction slag soil is 1:4; the mass of the added curing agent is 25 percent of the sum of the mass of the fine aggregate of the municipal solid waste incinerator slag and the mass of the building slag soil, the mass of the added water is 130 percent of the sum of the total mass of the fine aggregate of the municipal solid waste incinerator slag, the mass of the added water and the mass of the added excitant is 18 percent of the mass of the slag.
Further, in the present embodiment, the curing agent is a mixture of 42.5R ordinary portland cement and slag, and 42.5R ordinary portland cement accounts for 40% by mass of the curing agent, and the slag accounts for 60% by mass of the curing agent.
Further, in the present embodiment, the activator is a mixture of sodium silicate, sodium hydroxide and calcium hydroxide, and their mass ratio is 16. (preferably, sodium silicate is 1.6 moulds).
EXAMPLE five
Step one, screening municipal solid waste incineration slag by a 4.75mm sieve to obtain municipal solid waste incineration fine aggregate;
and step two, feeding the fine aggregate of the municipal solid waste incineration slag, the building residue soil, the curing agent, the exciting agent, the early strength agent, the flowing agent and water into a stirrer according to a preset mass ratio, and uniformly stirring to obtain the premixed fluidized solidified soil.
Further, in the second step of this embodiment, the mass ratio of the fine aggregate of the municipal solid waste incinerator slag to the construction slag soil is 1:2.5; the mass of the added curing agent is 25 percent of the sum of the mass of the fine aggregate of the municipal solid waste incinerator slag and the mass of the building slag soil, the mass of the added water is 70 percent of the sum of the mass of the fine aggregate of the municipal solid waste incinerator slag, the mass of the added exciting agent is 18 percent of the mass of the ground fine ash of the municipal solid waste incinerator slag, the mass of the added early strength agent is 1 percent of the mass of the curing agent, and the mass of the added flowing agent is 2 percent of the mass of the curing agent.
And (3) in the second step, grinding the municipal solid waste incinerator slag by using a ball mill, and sieving by using a 1.25mm sieve to obtain the fine ground ash of the municipal solid waste incinerator slag.
Further, in the present embodiment, the curing agent is a mixture of 42.5R ordinary portland cement, ground ash of municipal solid waste incinerator slag, and 42.5R ordinary portland cement accounts for 30% by mass of the curing agent, and the total mass of the ground ash of municipal solid waste incinerator slag and slag accounts for 70% by mass of the curing agent, wherein the mass ratio of the ground ash of municipal solid waste incinerator slag to the slag is 2.
Further, in the present embodiment, the activator is a mixture of sodium silicate, sodium hydroxide and calcium hydroxide, and their mass ratio is 16. (preferably, sodium silicate is 1.6 moulds).
Further, in this embodiment, the early strength agent is a mixture of calcium chloride and sodium sulfate, and the mass ratio of calcium chloride to sodium sulfate is 3:2.
further, in this embodiment, the flow agent is a high-performance polycarboxylic acid water reducing agent.
The test piece is obtained by adopting the premixed fluid solidified soil of the embodiment, and the strength test is carried out, wherein the compressive strength of the test piece is as follows in 7d and 28 d:
the data of the above examples show that the invention can obtain the premixed fluid solidified soil for the building material by using the municipal solid waste incinerator slag and the building muck as main raw materials, and the premixed fluid solidified soil has better strength.
Meanwhile, the fine ground ash of the municipal solid waste incineration filter residue can replace part of cement and slag to be used as an active component of a curing agent, so that the use amount of the cement and the slag can be reduced, the cost is saved, and meanwhile, the waste can be effectively utilized, so that the municipal solid waste incineration filter residue has a better application prospect.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. The premixed fluidized solidified soil is characterized in that: comprises the following components: the municipal solid waste incinerator slag fine aggregate, building slag soil, a curing agent and water, wherein the municipal solid waste incinerator slag fine aggregate and the building slag soil are mixed in a mass ratio of 1: (0.25-4), the mass of the curing agent is 10-30% of the sum of the mass of the fine aggregate of the municipal solid waste incineration slag and the mass of the construction slag soil, and the mass of the water is 50-150% of the sum of the mass of the fine aggregate of the municipal solid waste incineration slag, the mass of the construction slag soil and the mass of the curing agent.
2. The ready-mix fluidized solidified soil of claim 1, wherein: the curing agent is a mixture of Portland cement, urban domestic garbage incinerator slag fine ground ash and/or slag, wherein the mass of the Portland cement is 20-50% of the mass of the curing agent, and the mass of the urban domestic garbage incinerator slag fine ground ash and/or the slag is 50-80% of the mass of the curing agent.
3. The ready-mix fluidized solidification soil of claim 2, wherein: the mass ratio of the fine grinding ash of the municipal solid waste incinerator slag to the slag is less than or equal to 2.3.
4. The ready-mixed fluidized solidified soil according to any one of claims 1 to 3, wherein: the premixed fluidized solidified soil also comprises an exciting agent, the mass of the exciting agent is 18% of the mass of the ground fine ash and/or slag of the municipal solid waste incinerator slag, the exciting agent is a mixture of sodium silicate, sodium hydroxide and calcium hydroxide, and the mass ratio of the sodium silicate to the sodium hydroxide to the calcium hydroxide is 16:10:1.
5. the ready-mixed fluidized solidified soil according to claim 1, wherein: the premixed fluid solidified soil also comprises an early strength agent, wherein the mass of the early strength agent is 1-2% of that of the solidifying agent, the early strength agent is a mixture of calcium chloride and sodium sulfate, and the mass ratio of the calcium chloride to the sodium sulfate is 3:2.
6. the ready-mixed fluidized solidified soil according to claim 1, wherein: the premixed fluid solidified soil also comprises a flowing agent, wherein the mass of the flowing agent is 1.5-2.5% of that of the solidifying agent, and the flowing agent is a high-performance polycarboxylic acid water reducing agent.
7. The method for preparing ready-mixed fluidized solidified soil according to any one of claims 1 to 6, comprising the steps of:
step one, screening the municipal solid waste incineration slag through a 4.75mm sieve to obtain fine aggregate of the municipal solid waste incineration slag;
and step two, uniformly mixing the building waste soil, the fine aggregate of the municipal solid waste incineration slag, the curing agent and water according to a predetermined mass ratio to obtain the premixed fluidized cured soil.
8. The method for preparing premixed fluidized solidified soil according to claim 7, wherein the curing agent is a mixture of portland cement, fine ground ash of municipal solid waste incinerator slag, and slag in the second step, the municipal solid waste incinerator slag is ground by a ball mill and sieved by a 1.25mm sieve to obtain the fine ground ash of municipal solid waste incinerator slag.
9. The use of the ready mixed fluid solidified soil according to any one of claims 1 to 6, wherein the ready mixed fluid solidified soil is used for foundation pit, foundation bed pavement or backfill construction.
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| CN116160537A (en) * | 2023-04-23 | 2023-05-26 | 华南理工大学 | Solidified soil production system and production process for recycling residue soil |
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| CN107572956A (en) * | 2017-09-11 | 2018-01-12 | 王继忠 | A kind of premixing fluidised form solidified earth |
| CN112225511A (en) * | 2020-12-16 | 2021-01-15 | 湖南云中再生科技股份有限公司 | Road base material produced by using engineering soil and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116160537A (en) * | 2023-04-23 | 2023-05-26 | 华南理工大学 | Solidified soil production system and production process for recycling residue soil |
| CN116160537B (en) * | 2023-04-23 | 2023-06-20 | 华南理工大学 | Solidified soil production system and production process for recycling residue soil |
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