CN111732375A - Micro-powder foam light soil and preparation method thereof - Google Patents
Micro-powder foam light soil and preparation method thereof Download PDFInfo
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- CN111732375A CN111732375A CN202010609244.5A CN202010609244A CN111732375A CN 111732375 A CN111732375 A CN 111732375A CN 202010609244 A CN202010609244 A CN 202010609244A CN 111732375 A CN111732375 A CN 111732375A
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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
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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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
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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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/10—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam
- C04B38/106—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam by adding preformed foams
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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
- 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
- C04B2111/00663—Uses not provided for elsewhere in C04B2111/00 as filling material for cavities or the like
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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
- 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
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
-
- 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
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses micro-powder foam light soil which is prepared from the following raw materials in parts by weight: 1-1200 parts of a cementing material, 0.1-1200 parts of micro powder, 0-800 parts of an admixture, 1-600 parts of water, 0-10 parts of a water reducing agent, 0-20 parts of a reinforcing agent, 0-5 parts of an emulsifier, 0-10 parts of fiber, 0-50 parts of an excitant and 0.1-10 parts of a foaming agent; the preparation method comprises the following steps: (1) weighing the raw materials; (2) mixing and stirring a cementing material, micro powder, an admixture, water, a water reducing agent, a reinforcing agent, an emulsifier, fiber and an excitant; (3) mixing with the foaming foam of the foaming agent; (4) and performing cast-in-place or factory prefabrication. The micro powder foam light soil disclosed by the invention contains a large number of air holes inside, has the characteristics of light weight, high strength and heat insulation, can effectively reduce the self weight of a building body, can be added with a large number of waste raw materials, realizes the comprehensive utilization of various resources, effectively improves the utilization rate of the waste and reduces the production cost.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to micro-powder foam light soil and a preparation method thereof.
Background
In the traditional material industry, aggregate is a main material in the building industry and the industries of municipal administration, roads, bridges, tunnels and the like, and the dominant position of aggregate is self-evident, and the use amount of aggregate is continuously increased along with the continuous expansion of the infrastructure scale in China. In the process of processing aggregate (including but not limited to stones and sand), a large amount of fine micro powder can be generated, at present, no good processing way exists for the micro powder, and if the micro powder is used in the concrete industry, the micro powder is harmful to the strength of concrete; if used as mortar, the mortar also influences the setting; the direct discharge pollutes the environment, thereby causing secondary dust pollution, long-term precipitation, accumulation like a mountain and very troublesome post-treatment.
The foamed light soil is a material which is relatively exploded in recent years, is also called as bubble mixed light soil, foam concrete, light foamed soil and the like, and has the advantages of light weight, high strength, self-leveling property, erectness, heat preservation and insulation, corrosion prevention, sound insulation and the like. The foamed light soil can be widely applied to all filling fields such as roadbed filling, abutment back filling, rail transit roadbed filling, high-speed railway roadbed filling, underground pipeline filling, underground cavity filling or emergency filling and the like.
The production of the foamed light soil is simple and rapid, the market capacity is large, and if the micro powder is applied, the problem of the existing micro powder material can be rapidly solved, the waste is changed into valuable, and the macro targets of energy conservation, emission reduction and comprehensive utilization of resources are realized.
Therefore, how to develop a foamed lightweight soil by using micro powder is a problem which needs to be solved urgently by those skilled in the art.
Disclosure of Invention
The invention aims to provide micro powder foam light soil and a preparation method thereof, and finally find foam light soil products suitable for various micro powder by performing experiments on materials collected by different dust bags all over the country. The research and development of the invention undoubtedly make great response to the call of energy conservation and emission reduction in China.
In order to achieve the purpose, the invention adopts the following technical scheme:
the micro-powder foam light soil is prepared from the following raw materials in parts by weight: 1-1200 parts of a cementing material, 0.1-1200 parts of micro powder, 0-800 parts of an admixture, 1-600 parts of water, 0-10 parts of a water reducing agent, 0-20 parts of a reinforcing agent, 0-5 parts of an emulsifier, 0-10 parts of fiber, 0-50 parts of an excitant and 0.1-10 parts of a foaming agent.
Further, the gel material is at least one of cement and cement clinker.
The gel material can form firm cement stone after reacting with water, and the micro powder is firmly bonded into a whole, so that the foamed lightweight soil has certain physical and mechanical properties.
Further, the micro powder (also called stone powder, etc.) is a mineral material with the fineness of 250 meshes and the residual content of less than 20 percent.
The method has the further beneficial effects that the dust generated in the aggregate processing process is added into the foamed lightweight soil, so that a large amount of micro powder waste can be utilized, the using amount of gel materials can be saved, the production cost is reduced, the workability of the foamed lightweight soil can be improved, and the compactness, impermeability, chemical corrosion resistance and the like of the foamed lightweight soil are improved; the method has the main effects of effectively improving the utilization rate of the micro-powder waste, solving the problem of stacking of the micro-powder waste to the maximum extent, protecting the environment and saving national land resources.
In addition, the micro powder generated in the aggregate processing process can be directly bagged or canned to be applied to the foamed lightweight soil project of the invention not only during collection, but also the micro powder slurry under the sedimentation tank generated in large quantity in the prior period can be directly applied to the foamed lightweight soil project of the invention, thereby solving the micro powder waste stored in recent years.
Further, the admixture is at least one of fly ash, tailings, red mud, slag powder, steel slag micro powder, steel slag tail mud, gypsum, diatomite, aluminum ash, waste incineration fly ash, water-quenched slag or water-quenched slag powder and silica fume.
The foam light soil has the further beneficial effects that industrial solid wastes such as fly ash, tailings, red mud, slag powder, steel slag micro powder, steel slag tail mud, gypsum, diatomite, aluminum ash, waste incineration fly ash, water-quenched slag or water-quenched slag powder, silica fume and the like are added into the foam light soil, so that the characteristics of the foam light soil can be effectively improved, the problem of hydration heat in the construction process is reduced, and the utilization rate of the solid wastes is effectively improved.
Further, the water reducing agent is a naphthalene water reducing agent or a polycarboxylic acid water reducing agent.
The naphthalene water reducer and the polycarboxylic acid water reducer have good adaptability to cement paste, do not influence the stability of foam, and have the following effects: firstly, the water-material ratio is reduced, and the strength of the foamed lightweight soil is improved; secondly, the dispersibility of cement is increased, so that the foamed lightweight soil slurry is more uniform, the workability of the slurry is improved, and the flowability of pumping is increased; shortening the stirring time and reducing the probability of bubble breaking; and fourthly, the cohesion of the foamed light soil is improved, the stability of the foam is facilitated, and the probability of floating and merging of the foam is reduced.
Further, the reinforcing agent is at least one of magnesium chloride, magnesium oxide, sodium chloride and aluminum oxide.
The reinforcing agent has the characteristics of high porosity, high bearing capacity, low plasticity and the like, can reduce the water-cement ratio, enhance the cohesiveness, improve the volume stability, ensure the porosity of the foamed light soil and effectively improve the quality of the foamed light soil product.
Further, the emulsifier is at least one of triethanolamine and inorganic aluminum salt.
The emulsifier has the further beneficial effects that the emulsifying and dispersing effects of the emulsifier improve the hydration rate of the foamed lightweight soil, greatly accelerate the viscosity of the concrete, and reduce the setting time and the forming speed.
Further, the fibers are at least one of polypropylene staple fibers and wood fibers.
The light foamed soil has the further beneficial effects that the polypropylene short fibers and the wood fibers can well improve the crack resistance, the impermeability, the impact and abrasion resistance and the freezing resistance of the light foamed soil, and tens of millions of fibers are uniformly distributed in the light foamed soil to play a good micro-reinforcing role, so that the integrity of the foamed light soil is well maintained.
Further, the activator is a polycarboxylate activator, an alcanolamine activator, a naphthalenesulfonic acid activator, or Na2SO4At least one of sodium hydroxide, water glass, quicklime, alkaline waste slurry and gypsum.
The activator has the further beneficial effects that the activator can participate in the early hydration process, so that gaps among micro powder are fully utilized, the cement performance is improved, the water consumption is reduced, the foamed lightweight soil is more compact, the durability indexes of frost resistance, impermeability and the like are improved, and meanwhile, the product activity in the micro powder can be effectively excited, so that the product strength is improved.
Further, the foaming agent is at least one of an animal type foaming agent and a compound type foaming agent, and is preferably a rosin resin type foaming agent, a protein active substance type foaming agent or a compound type foaming agent.
The foam agent has good foaming capacity, neutral performance and good affinity with water, is a transparent solution when being mixed with water, can generate a large amount of bubbles in cement paste, the bubbles are mutually independent and are uniformly distributed in the cement paste to form a large amount of closed pores, so the foam light soil has good heat preservation, heat insulation and sound insulation effects, and the pore size of the foam light soil can be adjusted according to the using amount of a foaming agent.
A preparation method of micro-powder foam light soil specifically comprises the following steps:
(1) weighing the raw materials according to the parts by weight of the micro powder foam light soil;
(2) mixing and stirring a cementing material, micro powder, an admixture, water, a water reducing agent, a reinforcing agent, an emulsifier, fibers and an excitant at a speed of 50-150r/min for 2-5min to obtain a composite slurry;
(3) firstly, foaming the foaming agent to obtain foaming foam, and then mixing the foaming foam with the composite slurry to obtain mixed slurry, wherein the foaming process adopts a physical foaming or chemical foaming mode;
(4) the mixed slurry is cast in place or prefabricated into 1200kg/m with the dry density of 300-3The micro powder foam light soil is obtained.
Through the technical scheme, compared with the prior art, the invention has the beneficial effects that:
1. the micro powder foam light soil disclosed by the invention contains a large number of air holes inside, has the characteristics of light weight, high strength and heat insulation, can effectively reduce the self weight of a building body, can be added with a large number of waste raw materials, realizes the comprehensive utilization of various resources, effectively improves the utilization rate of waste and reduces the production cost;
2. according to the invention, the micro powder generated in the aggregate processing process is added into the foamed lightweight soil, so that the dust removal micro powder waste in storage can be rapidly solved, and waste is changed into valuable, thereby realizing the macro targets of energy conservation, emission reduction and solid waste utilization;
3. through the modification of the foaming agent, the micro powder foam light soil with high continuous porosity and good water permeability can be produced, and the size of the pore diameter can be adjusted according to the volume weight and also can be adjusted according to the proportion;
4. the internal pore diameter of the light foam soil product prepared by the invention can be adjusted between 0.01 mm and 10mm, the closed pore rate reaches 50 percent to 100 percent, and the material can be used for all filling projects such as roof insulation, floor cushion layer, roadbed filling, abutment back filling, rail transit roadbed filling, high-speed railway roadbed filling, underground pipeline filling, underground cavity filling, emergency filling and the like;
5. the micro powder foam light soil is naturally cured, the longer the time is, the higher the strength is, and the strength is stably increased;
6. the micro powder foam light soil is simple and quick to produce, and is directly cast and molded by one pipeline; the equipment is light and convenient; the production is not limited to a factory, the site direct construction can be carried out, the factory prefabrication can also be carried out, and the market capacity is large.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Micro-powder foam light soil (product volume weight is 400 kg/m)3) The feed is prepared from the following raw materials in parts by weight: 100kg of cement, 100kg of micro powder (mineral material with fineness of 250 meshes and less than 20%), 210kg of water and 0.1kg of animal type foaming agent.
The preparation method comprises the following steps:
(1) weighing the raw materials according to the weight of the micro powder foam light soil;
(2) adding cement, micro powder and water into the stirring system, and mixing and stirring for 5min at the speed of 50r/min to obtain composite slurry;
(3) conveying the composite slurry obtained in the step (2) into a mixing system through a pipeline, adding an animal-type foaming agent into a foaming system for foaming, conveying the foam into the mixing system through high-pressure air, and mixing the mixed slurry and the foamed foam in the mixing system in time to obtain mixed slurry;
(4) and (4) casting the mixed slurry in situ to obtain the micro-powder foam light soil.
Example 2
Micro-powder foam light soil (product volume weight is 400 kg/m)3) The feed is prepared from the following raw materials in parts by weight: 250kg of cement, 100kg of micro powder (mineral material with fineness of 250 meshes and less than 20%), 160kg of water, 1kg of naphthalene water reducer and 0.1kg of animal foaming agent.
The preparation method comprises the following steps:
(1) weighing the raw materials according to the weight of the micro powder foam light soil;
(2) adding cement, micro powder, a naphthalene water reducer and water into a stirring system, and mixing and stirring at the speed of 80r/min for 5min to obtain composite slurry;
(3) conveying the composite slurry obtained in the step (2) into a mixing system through a pipeline, adding an animal-type foaming agent into a foaming system for foaming, conveying the foam into the mixing system through high-pressure air, and mixing the mixed slurry and the foamed foam in the mixing system in time to obtain mixed slurry;
(4) and (4) casting the mixed slurry in situ to obtain the micro-powder foam light soil.
Example 3
Micro-powder foam light soil (product volume weight is 400 kg/m)3) The feed is prepared from the following raw materials in parts by weight: 250kg of cement clinker, 100kg of micro powder (mineral material with fineness of 250 meshes and less than 20%), 160kg of water, 1kg of naphthalene water reducer, 1kg of polypropylene short fiber and 1kg of animal foaming agent.
The preparation method comprises the following steps:
(1) weighing the raw materials according to the weight of the micro powder foam light soil;
(2) adding cement clinker, micro powder, a naphthalene water reducer, polypropylene short fibers and water into a stirring system, and mixing and stirring at the speed of 100r/min for 4min to obtain composite slurry;
(3) conveying the composite slurry obtained in the step (2) into a mixing system through a pipeline, adding an animal-type foaming agent into a foaming system for foaming, conveying the foam into the mixing system through high-pressure air, and mixing the mixed slurry and the foamed foam in the mixing system in time to obtain mixed slurry;
(4) and (4) casting the mixed slurry on site to obtain the micro-powder foam light soil.
Example 4
Micro-powder foam light soil (product volume weight is 400 kg/m)3) The feed is prepared from the following raw materials in parts by weight: 200kg of cement, 100kg of micro powder (mineral material with fineness of 250 meshes and less than 20%), 50kg of fly ash, 160kg of water, 1kg of polycarboxylic acid water reducing agent, 1kg of polypropylene short fiber, 3kg of magnesium chloride, 1kg of polycarboxylate excitant, 1kg of triethanolamine and 1kg of compound foaming agent.
The preparation method comprises the following steps:
(1) weighing the raw materials according to the weight of the micro powder foam light soil;
(2) adding cement, micro powder, fly ash, a polycarboxylic acid water reducing agent, polypropylene short fibers, magnesium chloride, a polycarboxylate excitant, triethanolamine and water into a stirring system, and mixing and stirring at the speed of 120r/min for 3min to obtain a composite slurry;
(3) conveying the composite slurry obtained in the step (2) into a mixing system through a pipeline, adding a composite foaming agent into a foaming system for foaming, conveying foam into the mixing system through high-pressure air, and mixing the mixed slurry and the foamed foam in the mixing system in time to obtain mixed slurry;
(4) the mixed slurry is prefabricated into a dry density of 400kg/m3The micro powder foam light soil is obtained.
Example 5
Micro-powder foam light soil (product volume weight is 400 kg/m)3) The feed is prepared from the following raw materials in parts by weight: 250kg of cement, 100kg of micro powder (mineral material with fineness of 250 meshes and less than 20%), 140kg of water, 2kg of polycarboxylic acid water reducing agent, 1kg of wood fiber, 3kg of magnesium oxide, 1kg of inorganic aluminum salt and 1kg of compound foaming agent.
The preparation method comprises the following steps:
(1) weighing the raw materials according to the weight of the micro powder foam light soil;
(2) adding cement, micro powder, a polycarboxylic acid water reducing agent, wood fiber, magnesium oxide, inorganic aluminum salt and water into a stirring system, and mixing and stirring at the speed of 120r/min for 2min to obtain composite slurry;
(3) conveying the composite slurry obtained in the step (2) into a mixing system through a pipeline, adding a composite foaming agent into a foaming system for foaming, conveying foam into the mixing system through high-pressure air, and mixing the mixed slurry and the foamed foam in the mixing system in time to obtain mixed slurry;
(4) the mixed slurry is prefabricated into a dry density of 400kg/m3The micro powder foam light soil is obtained.
Example 6
Micro-powder foam light soil (product volume weight is 500 kg/m)3) From the following raw materials by weightPreparing materials: 1200kg of cement clinker, 120kg of micro powder (mineral material with fineness of 250 meshes and less than 20%), 800kg of tailings, 600kg of water, 50kg of polycarboxylate excitant, 10kg of polycarboxylate water reducing agent, 10kg of wood fiber, 20kg of sodium chloride, 5kg of inorganic aluminum salt and 0.8kg of compound foaming agent.
The preparation method comprises the following steps:
(1) weighing the raw materials according to the weight of the micro powder foam light soil;
(2) adding cement clinker, micro powder, tailings, a polycarboxylic acid water reducer, wood fiber, sodium chloride, inorganic aluminum salt and water into a stirring system, and mixing and stirring at the speed of 150r/min for 2min to obtain composite slurry;
(3) conveying the composite slurry obtained in the step (2) into a mixing system through a pipeline, adding a composite foaming agent into a foaming system for foaming, conveying foam into the mixing system through high-pressure air, and mixing the mixed slurry and the foamed foam in the mixing system in time to obtain mixed slurry;
(4) the mixed slurry is prefabricated into the dry density of 500kg/m3The micro powder foam light soil is obtained.
Performance detection
A small amount of the micro-powder foamed lightweight soil products prepared in examples 1 to 6 were taken, and dry volume weight, wet volume weight, 7-day product strength index and 28-day product strength index were respectively tested according to the provisions of "building industry standard JG/T266-2011" foamed lightweight soil ", and the test results are shown in Table 1.
TABLE 1 results of performance testing of micro-powder foamed lightweight soil products prepared in examples 1-6
As can be seen from Table 1, the properties of the micro powder foam lightweight soil products prepared in examples 1-6 of the present invention all meet the corresponding standards, wherein the product property in example 4 is the best.
The tests show that the micro powder foam light soil has excellent physical properties.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The micro-powder foam light soil is characterized by being prepared from the following raw materials in parts by weight: 1-1200 parts of a cementing material, 0.1-1200 parts of micro powder, 0-800 parts of an admixture, 1-600 parts of water, 0-10 parts of a water reducing agent, 0-20 parts of a reinforcing agent, 0-5 parts of an emulsifier, 0-10 parts of fiber, 0-50 parts of an excitant and 0.1-10 parts of a foaming agent.
2. The micro-powder foam lightweight soil according to claim 1, wherein the gel material is at least one of cement and cement clinker.
3. A micropowder foam light soil according to claim 1, characterized in that the micropowder fineness is a mineral material with 250 mesh and less than 20%.
4. A micro-powder foamed lightweight soil according to claim 1, wherein the admixture is at least one of fly ash, tailings, red mud, slag powder, steel slag micro-powder, steel slag tailings, gypsum, diatomite, aluminum ash, waste incineration fly ash, water-quenched slag or water-quenched slag powder, and silica fume.
5. The micro-powder foam light soil according to claim 1, wherein the water reducing agent is a naphthalene water reducing agent or a polycarboxylic acid water reducing agent.
6. A micro powder foam light soil according to claim 1, wherein the reinforcing agent is at least one of magnesium chloride, magnesium oxide, sodium chloride and aluminum oxide.
7. The micropowder foam lightweight soil according to claim 1, wherein the emulsifier is at least one of triethanolamine and inorganic aluminum salt.
8. The micro-powder foam lightweight soil according to claim 1, wherein the fiber is at least one of polypropylene short fiber and wood fiber.
9. The micro-powder foam light-weight soil according to claim 1, wherein the activator is polycarboxylate activator, alcanolamine activator, naphthalenesulfonic acid activator, Na2SO4At least one of sodium hydroxide, water glass, quicklime, alkaline waste slurry and gypsum;
the foaming agent is at least one of an animal type foaming agent and a compound type foaming agent.
10. The preparation method of the micro-powder foam light soil is characterized by comprising the following steps:
(1) weighing the raw materials according to the parts by weight of the micro-powder foam light soil of any one of claims 1 to 9;
(2) mixing and stirring a cementing material, micro powder, an admixture, water, a water reducing agent, a reinforcing agent, an emulsifier, fibers and an excitant at a speed of 50-150r/min for 2-5min to obtain a composite slurry;
(3) firstly, foaming the foaming agent to obtain foaming foam, and then stirring and mixing the foaming foam and the composite slurry to obtain mixed slurry;
(4) the mixed slurry is cast in place or prefabricated into 1200kg/m with the dry density of 300-3The micro powder foam light soil is obtained.
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| CN112358318A (en) * | 2020-11-26 | 2021-02-12 | 山东永正产业技术研究院有限公司 | Waterproof foam light soil and preparation method thereof |
| CN112374848A (en) * | 2020-10-27 | 2021-02-19 | 杭州浙飞机场工程有限公司 | Foam light soil roadbed filling material and processing method thereof |
| CN112554356A (en) * | 2020-12-01 | 2021-03-26 | 中建西部建设建材科学研究院有限公司 | Disassembly-free template with planting and heat preservation functions and preparation method |
| CN112608087A (en) * | 2020-12-18 | 2021-04-06 | 广东泰禾建设有限公司 | High-strength waterproof foam light soil and preparation method thereof |
| CN112624671A (en) * | 2020-12-04 | 2021-04-09 | 广东盛瑞科技股份有限公司 | On-site preparation method of underwater foam light soil |
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| CN113816678A (en) * | 2021-09-23 | 2021-12-21 | 山东大学 | Foam lightweight material using dust removal ash solid waste and its preparation method and application |
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| CN112374848B (en) * | 2020-10-27 | 2021-06-29 | 杭州浙飞机场工程有限公司 | Foam light soil roadbed filling material and processing method thereof |
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| CN112554356A (en) * | 2020-12-01 | 2021-03-26 | 中建西部建设建材科学研究院有限公司 | Disassembly-free template with planting and heat preservation functions and preparation method |
| CN112624671A (en) * | 2020-12-04 | 2021-04-09 | 广东盛瑞科技股份有限公司 | On-site preparation method of underwater foam light soil |
| CN112851207A (en) * | 2020-12-04 | 2021-05-28 | 广东盛瑞科技股份有限公司 | Foam light soil material for waste civil air defense engineering and on-site preparation method thereof |
| CN112608087A (en) * | 2020-12-18 | 2021-04-06 | 广东泰禾建设有限公司 | High-strength waterproof foam light soil and preparation method thereof |
| CN112723845A (en) * | 2020-12-30 | 2021-04-30 | 广东盛瑞科技股份有限公司 | Enhanced ecological foam light soil material and preparation method thereof |
| CN112745088A (en) * | 2020-12-31 | 2021-05-04 | 河南省交通勘察设计有限公司 | Foamed light soil for widening roadbed of road system and construction method thereof |
| CN112745088B (en) * | 2020-12-31 | 2022-06-17 | 河南省交通勘察设计有限公司 | Foamed light soil for widening roadbed of road system and construction method thereof |
| CN113004006A (en) * | 2021-03-08 | 2021-06-22 | 张建华 | Foamed light soil for backfilling waste petroleum pipelines and preparation method thereof |
| CN113024215A (en) * | 2021-03-08 | 2021-06-25 | 张建华 | Tailing foam concrete applied to alpine and high-altitude areas and preparation method thereof |
| CN113827891A (en) * | 2021-09-22 | 2021-12-24 | 乌海市东孚水泥有限责任公司 | Coal gangue hill covering and coating fire extinguishing material, preparation method thereof and fire extinguishing method |
| CN113816678A (en) * | 2021-09-23 | 2021-12-21 | 山东大学 | Foam lightweight material using dust removal ash solid waste and its preparation method and application |
| CN115108769A (en) * | 2022-07-29 | 2022-09-27 | 烟台大学 | A kind of high-performance mixed alkali excited foam concrete and preparation method thereof |
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