CN112851207A - Foam light soil material for waste civil air defense engineering and on-site preparation method thereof - Google Patents
Foam light soil material for waste civil air defense engineering and on-site preparation method thereof Download PDFInfo
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- CN112851207A CN112851207A CN202011403161.7A CN202011403161A CN112851207A CN 112851207 A CN112851207 A CN 112851207A CN 202011403161 A CN202011403161 A CN 202011403161A CN 112851207 A CN112851207 A CN 112851207A
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- China
- Prior art keywords
- air defense
- civil air
- soil material
- foam
- environment
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
-
- 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
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The invention discloses a foamed lightweight soil material for waste civil air defense engineering and a preparation method thereof, wherein the foamed lightweight soil material comprises an environment-friendly mixture, anti-dispersion mixed liquid and foam; the environment-friendly mixture comprises cement, an admixture, an environment-friendly admixture and an early strength agent; the anti-dispersion mixed solution comprises an anti-dispersion agent and water; the environment-friendly admixture is ceramic polishing powder slag which is waste generated in the ceramic polishing process. The foam light soil material for the waste civil air defense engineering can reduce the backfill construction cost of the waste civil air defense engineering and improve the operation economy by adopting the ceramic polishing powder slag as an environment-friendly admixture.
Description
Technical Field
The invention relates to the field of building materials, in particular to a foam light soil material for waste civil air defense engineering and a field preparation method thereof.
Background
Civil air defense engineering refers to an underlying protective building which is built independently by shielding personnel and materials. For the abandoned civil air defense projects which are long in the past, due to the influence of factors such as long-term overhaul, perennial water soaking and the like, the strength of the brick masonry is reduced, the whole bearing capacity is reduced, most of the entrances and exits of the abandoned civil air defense projects are mostly backfilled or damaged, personnel cannot enter the entrances to carry out maintenance and management, the civil air defense projects cannot meet the safe use requirements, the great safe influence can be caused on the road buildings which are built above the civil air defense projects, and measures such as backfilling and plugging are usually adopted in the specific operation.
At present, the most commonly used filling material for the backfill of the abandoned civil air defense engineering is cement concrete, the construction period of the cement concrete is longer, the construction cost is high, the cement concrete cannot self-level flow and self-compaction, and a good compaction effect cannot be achieved without manual vibration compaction, so that the filling compactness cannot be ensured.
In addition, the density of cement concrete is high, and differential settlement is often caused due to the material difference between the cement concrete and the surrounding soil body after the civil air defense engineering is filled with the concrete, so that the use function of the overlying buildings of the civil air defense engineering is influenced; and the hardened cement concrete filling body is difficult to dig out, and the later-period dismantling cost is higher.
The foam light soil is used as a novel backfill material, has the advantages of self-leveling property, low density, high strength and the like, and is used in the foam light soil. The admixture is an important composition material of the foam light soil, and the selection of the type of the admixture has great influence on the cost of the foam light soil.
Disclosure of Invention
In order to reduce the manufacturing cost of the foam light soil, the invention provides a foam light soil material for waste civil air defense engineering and a field preparation method thereof.
Correspondingly, the invention provides a foamed light soil material for waste civil air defense engineering, which comprises an environment-friendly mixture, anti-dispersion mixed liquor and foam;
the environment-friendly mixture comprises cement, an admixture, an environment-friendly admixture and an early strength agent;
the anti-dispersion mixed solution comprises an anti-dispersion agent and water;
the environment-friendly admixture is ceramic polishing powder slag which is waste generated in the ceramic polishing process.
In an alternative embodiment, the admixture is a slag powder. The slag powder is a high-quality concrete admixture for short, granulated blast furnace slag powder, and is prepared by drying and grinding granulated blast furnace slag meeting the GB/T203 standard to obtain powder with equivalent fineness and equivalent activity index.
In an alternative embodiment, the anti-dispersant is hydroxyethyl cellulose.
In an optional embodiment, the early strength agent is a composite early strength agent.
In an alternative embodiment, the foam is prepared based on one of a plant protein foaming agent, an animal protein foaming agent or a composite foaming agent.
In an optional embodiment, in the foamed lightweight soil material, the environment-friendly mixture and the anti-dispersion mixed solution comprise the following components in parts by weight: 1000-8000 parts of cement, 1000-5000 parts of admixture, 1000-5000 parts of environment-friendly admixture, 4-50 parts of anti-dispersant, 2-200 parts of early strength agent and 3000-7000 parts of water.
In an alternative embodiment, the volume of the foam in the foamed lightweight soil material is 5% to 50% of the total volume.
Correspondingly, the invention also provides a field preparation method of the foamed lightweight soil, which comprises the following steps:
stirring the environment-friendly mixture and the anti-dispersion mixed liquid based on a stirring station to form first slurry;
transporting the first slurry to the site by a transport vehicle;
and receiving the first slurry by using a foam concrete machine on site, and adding a foaming agent to carry out physical foaming to form the foam lightweight soil.
In an alternative embodiment, the vehicle is a mixer truck.
An alternative embodiment, comprises:
and continuously pressurizing by a delivery pump of the pumping machine, and outputting the foamed concrete through a pumping pipe of the pumping machine. A
In conclusion, the invention provides the foam light soil material for the waste civil air defense engineering and the field preparation method thereof.
Drawings
Fig. 1 shows a flow chart of an on-site preparation method of a foamed lightweight soil material for abandoned civil air defense construction according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
The embodiment of the invention provides a foam light soil material for waste civil air defense engineering, which comprises the following raw materials of an environment-friendly mixture, anti-dispersion mixed liquid and foam;
the environment-friendly mixture comprises cement, an admixture, an environment-friendly admixture and an early strength agent;
the anti-dispersion mixed liquid comprises an anti-dispersion agent and water.
Specifically, the environment-friendly admixture of the embodiment of the invention is ceramic polishing powder slag, and the ceramic polishing powder slag is waste generated in the ceramic polishing process. Specifically, the ceramic polishing slag is waste with a particle size of less than 45 μm and a strength activity index of more than 70% generated in the ceramic polishing process. Specifically, the particle size of the waste material of the ceramic polishing slag is generally less than 100 μm, and the waste material needs to be screened by a 45 μm sieve, wherein the screening proportion is generally about 30%.
Specifically, the admixture of the embodiment of the invention is slag powder.
Specifically, the anti-dispersant in the embodiment of the present invention is hydroxyethyl cellulose. Specifically, the main functions of the concrete anti-dispersant are to reduce the time and energy required to complete the dispersion process using a wetting dispersant, stabilize the dispersed concrete dispersion, modify the surface properties of concrete particles, and adjust the mobility of concrete particles. Specifically, the hydroxyethyl cellulose provided by the embodiment of the invention can play a bridging role, a surface activity role and a bridging role on the foamed light soil.
Specifically, the early strength agent provided by the embodiment of the invention is a compound early strength agent. The early strength agent is an additive which can improve the early strength of concrete and has no obvious influence on the later strength. The early strength agent has the main functions of accelerating the hydration speed of the cement and promoting the development of the early strength of the concrete; not only has the early strength function, but also has certain water reducing and enhancing functions. The optional early strength agent is a chloride early strength agent, a sulfate early strength agent, a nitrite early strength agent, a chromate early strength agent and the like, and in addition, an organic early strength agent, such as triethanolamine, calcium formate, urea and the like, can be selected.
Specifically, the foam of the embodiment of the invention is prepared based on one of a plant protein foaming agent, an animal protein foaming agent or a composite foaming agent.
Specifically, in the foamed lightweight soil material of the embodiment of the invention, the environment-friendly mixture and the anti-dispersion mixed solution comprise the following components in parts by weight: 1000-8000 parts of cement, 1000-5000 parts of admixture, 1000-5000 parts of environment-friendly admixture, 4-50 parts of anti-dispersant, 2-200 parts of early strength agent and 3000-7000 parts of water.
Specifically, the foam volume in the foamed lightweight soil material of the embodiment of the invention accounts for 5-50% of the total volume.
Specifically, according to the characteristics of the abandoned civil air defense engineering, the foam lightweight soil should be prepared by selecting the mixture ratio of large fluidity, high land-water strength ratio and small slurry loss, the embodiment of the invention provides a specific embodiment, and the mixture ratio (parts by weight) of the foam lightweight soil material in the embodiment is as follows:
2600 parts of cement, 2000 parts of slag powder (admixture), 2000 parts of ceramic polishing slag (novel admixture), 7 parts of hydroxyethyl cellulose (anti-dispersant), 10 parts of composite early strength agent (early strength agent), 3300 parts of water; the foam accounts for 14% of the total volume.
The performance data of the foamed lightweight soil material are shown in Table 1
| Degree of fluidity | 7 Tian-Lu Strength ratio | 28 land-water intensity ratio | Amount of slurry loss | Foam rising condition |
| 190mm | 88％ | 86％ | 0.12％ | Is rarely used |
TABLE 1
Correspondingly, the invention also provides a field preparation method of the foamed lightweight soil, which comprises the following steps:
s101: stirring the environment-friendly mixture and the anti-dispersion mixed liquid based on a stirring station to form first slurry;
s102: transporting the first slurry to the site by a transport vehicle;
s103: and receiving the first slurry by using a foam concrete machine on site, and adding a foaming agent to carry out physical foaming to form the foam lightweight soil.
S104: and continuously pressurizing by a delivery pump of the pumping machine, and outputting the foamed concrete through a pumping pipe of the pumping machine.
In an alternative embodiment, the vehicle is a mixer truck.
To sum up, the embodiment of the invention provides a foamed lightweight soil material for waste civil air defense engineering and a field preparation method thereof, compared with the prior art, the foamed lightweight soil material has the advantages that ceramic polishing slag is used as a novel admixture, the problem of solid waste stockpiling pollution caused by ceramic polishing is solved, the resource utilization of solid waste is realized, and the cost is reduced; by adding the anti-dispersing agent, the foamed lightweight soil has good cohesiveness, and meanwhile, the good fluidity of the foamed lightweight soil is maintained, so that the slurry loss is small and the foam is less when the underwater pouring construction is carried out; the permeability coefficient of the foamed light soil is 10-5The water-permeable foam light soil has low water permeability, and the strength can be continuously increased when the underwater non-dispersive foam light soil is filled underwater, so that water damage caused by water permeation can be avoided.
The foam lightweight soil material for the abandoned civil air defense engineering and the field preparation method thereof provided by the embodiment of the invention are described in detail, the specific embodiment is applied in the text to explain the principle and the implementation mode of the invention, and the description of the embodiment is only used for helping to understand the method and the core thought of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A foam light soil material for waste civil air defense engineering is characterized by comprising an environment-friendly mixture, anti-dispersion mixed liquid and foam;
the environment-friendly mixture comprises cement, an admixture, an environment-friendly admixture and an early strength agent;
the anti-dispersion mixed solution comprises an anti-dispersion agent and water;
the environment-friendly admixture is ceramic polishing powder slag which is waste generated in the ceramic polishing process.
2. The foamed lightweight earthen material for waste civil air defense construction in accordance with claim 1, wherein said admixture is slag powder.
3. The foamed lightweight soil material for waste civil air defense construction as claimed in claim 1, wherein the dispersion preventive agent is hydroxyethyl cellulose.
4. The foamed lightweight soil material for abandoned civil air defense construction according to claim 1, wherein the early strength agent is a composite early strength agent.
5. The foamed lightweight soil material for waste civil air defense construction according to claim 1, wherein the foam is prepared based on one of a plant protein foaming agent, an animal protein foaming agent or a composite foaming agent.
6. The foamed lightweight soil material for civil air defense construction as claimed in claim 1, wherein the environmentally friendly mixture and the anti-dispersion mixture are composed of, by weight: 1000-8000 parts of cement, 1000-5000 parts of admixture, 1000-5000 parts of environment-friendly admixture, 4-50 parts of anti-dispersant, 2-200 parts of early strength agent and 3000-7000 parts of water.
7. The foamed lightweight soil material for abandoned civil air defense construction according to claim 1, wherein the volume of the foam in the foamed lightweight soil material is 5-50% of the total volume.
8. A field preparation method of a foam light soil material for waste civil air defense engineering is characterized by comprising the following steps:
stirring the environment-friendly mixture and the anti-dispersion mixed liquid based on a stirring station to form first slurry;
transporting the first slurry to the site by a transport vehicle;
and receiving the first slurry by using a foam concrete machine on site, and adding a foaming agent to carry out physical foaming to form the foam lightweight soil.
9. The on-site preparation method of foamed lightweight soil material for abandoned civil air defense construction according to claim 8, wherein the transportation means is a mixer truck.
10. The on-site preparation method of foamed lightweight earth material for abandoned civil air defense construction according to claim 8, characterized by comprising:
and continuously pressurizing by a delivery pump of the pumping machine, and outputting the foamed concrete through a pumping pipe of the pumping machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011403161.7A CN112851207A (en) | 2020-12-04 | 2020-12-04 | Foam light soil material for waste civil air defense engineering and on-site preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011403161.7A CN112851207A (en) | 2020-12-04 | 2020-12-04 | Foam light soil material for waste civil air defense engineering and on-site preparation method thereof |
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| Publication Number | Publication Date |
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| CN112851207A true CN112851207A (en) | 2021-05-28 |
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| CN202011403161.7A Pending CN112851207A (en) | 2020-12-04 | 2020-12-04 | Foam light soil material for waste civil air defense engineering and on-site preparation method thereof |
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Application publication date: 20210528 |