CN110550894A - light energy-saving concrete for underground filling and preparation method and application thereof - Google Patents
light energy-saving concrete for underground filling and preparation method and application thereof Download PDFInfo
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- CN110550894A CN110550894A CN201910838103.8A CN201910838103A CN110550894A CN 110550894 A CN110550894 A CN 110550894A CN 201910838103 A CN201910838103 A CN 201910838103A CN 110550894 A CN110550894 A CN 110550894A
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- filling
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- saving concrete
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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
- C04B30/00—Compositions for artificial stone, not containing binders
-
- 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)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a light energy-saving concrete for underground filling and a preparation method and application thereof, wherein the raw materials comprise a cementing material, an admixture, a foaming agent, an excitant and water, and further comprise a solid additive, the cementing material and the admixture are mixed, water is added, the mixture is uniformly stirred and mixed, foam formed by foaming the foaming agent is added, and the mixture is uniformly stirred and mixed Filling below all top structural layers such as underground pipeline filling, underground cavity filling, emergency filling and the like.
Description
Technical Field
the invention relates to concrete and a preparation method and application thereof, in particular to light energy-saving concrete for underground filling and a preparation method and application thereof, belonging to the field of building materials.
background
with the accelerated development of the urbanization process in China, the land resources are more and more tense, and the mass construction of underground structures such as traffic tunnels, subway stations, underground shopping malls and the like gradually transfers human activities from the ground to the underground, so that underground spaces are fully developed and utilized, which is a necessary trend of urban construction development.
The construction of filling concrete in deep foundation pit engineering in the core region of the city is restricted by a plurality of factors such as site conditions, hydrogeological conditions, surrounding environmental conditions and the like, and particularly conflicts with the development and construction of underground space in the core region of the city and the existing public facilities and natural social environment of the city, and the like, are increasingly serious.
The traditional production process mainly uses cement as raw materials, so that the production cost is high, the time limit of a construction period is influenced due to untimely raw material supply caused by peak-shifting production, and the subsequent quality is influenced due to the fact that cement hydration heat reaction is severe and cracks are easily generated, so that technical measures which are quicker in construction, lower in production cost and smaller in influence on the environment are urgently needed to be found.
Disclosure of Invention
In view of the above, the invention provides a light energy-saving concrete for underground filling and a preparation method and application thereof, which improve the existing underground concrete raw materials, effectively solve the problem of hydration heat, simultaneously can add and use a large amount of solid waste raw materials, effectively improve the utilization rate of solid waste, reduce the production cost, effectively realize large-scale equipment pumping and long-distance pipeline conveying, and have high construction speed.
in order to achieve the purpose, the invention adopts the following technical scheme:
The light energy-saving concrete for underground filling comprises the following raw materials in parts by weight: 0-150 parts of a cementing material, 40-350 parts of an admixture, 0-10 parts of a foaming agent, 5-20 parts of an exciting agent and 50-300 parts of water.
The light energy-saving concrete for underground filling can effectively solve the problem of hydration heat, can effectively realize large-scale equipment pumping and long-distance pipeline transportation, has high construction speed, can obtain light energy-saving materials with different applications after adding or replacing raw materials on the basis of the formula, can greatly add and use solid waste raw materials, effectively improves the utilization rate of solid waste, and reduces the production cost.
Further, the light energy-saving concrete for underground filling also comprises 5-20 parts by weight of solid additives, specifically any one or a mixture of sand particles, ceramsite and polyphenyl particles with the particle size of less than 5 mm.
further, the cementing material is any one or mixture of several of inorganic cementing materials such as cement, cement clinker and the like;
The admixture is any one or mixture of more of fly ash, tailings, red mud, slag, steel slag micro powder, steel slag tail mud, gypsum, diatomite, aluminum ash, waste incineration fly ash, stone powder, water-quenched slag or water-quenched slag powder, silica fume and stone powder with the granularity of less than 74 mu m;
The foaming agent is any one of animal foaming agent, compound foaming agent, aluminum powder and hydrogen peroxide.
the foaming agent is any one of an animal foaming agent, a high-molecular compound foaming agent, aluminum powder, hydrogen peroxide and the like, preferably surfactants such as AES (fatty alcohol polyoxyethylene ether sodium sulfate), k12 (lauryl sodium sulfate) and the like, proteins such as animal hair, tea saponin and the like, and additional materials such as 6501 (coconut oil fatty acid diethanolamide), cellulose, a preservative or a reinforcing agent and the like are compounded, wherein the exciting agent is any one or a mixture of more of a polycarboxylate exciting agent, an alcamine exciting agent, a naphthalene sulfonic acid exciting agent, Na 2 SO 4, sodium hydroxide, water glass and alkaline waste slurry.
The invention also provides a preparation method of the light energy-saving concrete for underground filling, which comprises the following steps:
(1) Weighing the raw materials according to the weight parts of the light energy-saving concrete for underground filling;
(2) drying, filter-pressing or airing the admixture until the water content is less than 20% for later use; or the admixture is slurry, wherein the solid proportion with the fineness of less than 75 mu m accounts for more than 80 percent of the total solid content proportion of the slurry;
(3) Mixing the gelled material and the dried admixture, and stirring and mixing for 2-10min at a rotating speed of 50-300r/min to obtain a mixture;
(4) Adding water into the mixture, and stirring and mixing for 2-10min at a rotating speed of 50-300r/min to obtain slurry;
(5) foaming a foaming agent to form foam, adding the foam into the slurry, and uniformly stirring and mixing to obtain the light energy-saving concrete for underground filling;
The method also comprises the operation of adding an excitant: adding the excitant into the admixture in an atomized and powdery form, or mixing the excitant with water and adding the excitant into the admixture, or adding the excitant into the slurry together with the foam.
the preparation method of the light energy-saving concrete for underground filling is convenient and easy to produce, has mild conditions, is suitable for cast-in-place pumping or factory prefabrication no matter whether the material adopts a physical foaming mode or a chemical foaming mode, has no pollutant generation and high construction speed, and can meet the large-batch market demand.
the invention also provides application of the light energy-saving concrete for underground filling in filling below a structural layer of the top of a building, including but not limited to 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.
Detailed Description
The technical solutions in the embodiments of the present invention will be 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
the preparation method of the light energy-saving concrete for underground filling comprises the following steps:
(1) Weighing 100kg of molybdenum tailings (admixture) with the particle size of less than 74 mu m, 120kg of cement (cementing material), 1kg of animal foaming agent, 5kg of mixture (exciting agent) formed by mixing water glass and Na 2 SO 4 in a mass ratio of 1:3 and 165kg of water;
(2) drying the admixture until the water content is 5% for later use;
(3) Mixing the gelled material and the dried admixture, and stirring and mixing for 5min at the rotating speed of 60r/min to obtain a mixture;
(4) Adding water and an exciting agent into the mixture, and stirring and mixing for 6min at the rotating speed of 60r/min to obtain slurry;
(5) Foaming the rosin resin foaming agent to form foam, adding the foam into the slurry, and uniformly stirring and mixing to obtain the light energy-saving concrete for underground filling.
Example 2
the preparation method of the light energy-saving concrete for underground filling comprises the following steps:
(1) Weighing raw materials according to 240kg of aluminum ash (admixture) with the granularity of less than 74 mu m, 40kg of gypsum (admixture), 120kg of cement clinker (cementing material), 2kg of compound foaming agent, 10kg of alkaline waste slurry (exciting agent) and 240kg of water;
(2) drying the admixture until the water content is 5% for later use;
(3) Mixing the gelled material and the dried admixture, and stirring and mixing for 2min at a rotating speed of 50r/min to obtain a mixture;
(4) Adding water and an exciting agent into the mixture, and stirring and mixing for 2min at a rotating speed of 50r/min to obtain slurry;
(5) foaming the protein active matter type foaming agent to form foam, adding the foam into the slurry, and uniformly stirring and mixing to obtain the light energy-saving concrete for underground filling.
Example 3
The preparation method of the light energy-saving concrete for underground filling comprises the following steps:
(1) weighing raw materials according to 350kg of red mud (admixture) with the granularity of less than 74 mu m, 150kg of steel slag (admixture), 50kg of polyphenyl granules (solid additive) with the grain diameter of less than 5mm, 2kg of animal foaming agent, 20kg of alcamine excitant and 275kg of water;
(2) Drying the admixture until the water content is 15% for later use;
(3) Mixing the solid additive, the dried admixture and the exciting agent, and stirring and mixing for 10min at the rotating speed of 70r/min to obtain a mixture;
(4) adding water into the mixture, and stirring and mixing for 10min at the rotating speed of 70r/min to obtain slurry;
(5) foaming the protein active matter type foaming agent to form foam, adding the foam into the slurry, and uniformly stirring and mixing to obtain the light energy-saving concrete for underground filling.
Performance detection
The light energy-saving concrete for underground filling prepared in examples 1 to 3 was subjected to density and compressive strength tests with reference to national standards, and the test results are shown in table 1.
Table 1 test results of lightweight energy-saving concrete for underground filling prepared in examples 1 to 3
Claims (10)
1. the light energy-saving concrete for underground filling is characterized by comprising the following raw materials in parts by weight: 0-150 parts of a cementing material, 0-50 parts of a solid additive, 40-300 parts of an admixture, 0-10 parts of a foaming agent, 5-20 parts of an exciting agent and 50-220 parts of water.
2. The lightweight energy-saving concrete for underground filling according to claim 1, further comprising 5-20 parts of a solid additive, wherein the solid additive is any one or a mixture of sand grains, ceramsite and polyphenyl granules with the grain size of less than 5 mm.
3. the lightweight energy-saving concrete for underground filling according to claim 1, wherein the cementing material is any one or a mixture of several of inorganic cementing materials such as cement, cement clinker and the like.
4. The lightweight energy-saving concrete for underground filling according to claim 1, wherein the admixture is any one or a mixture of more of fly ash, tailings, red mud, slag, steel slag micro powder, steel slag tailings, gypsum, diatomite, aluminum ash, waste incineration fly ash, stone powder, water-quenched slag or water-quenched slag powder, silica fume and stone powder with the particle size of less than 74 μm.
5. The light-weight energy-saving concrete for underground filling according to claim 1, wherein the foaming agent is any one of an animal foaming agent, a compound foaming agent, aluminum powder and hydrogen peroxide.
6. the lightweight energy-saving concrete for underground filling according to claim 1, wherein the activator is one or a mixture of several of polycarboxylate type activator, alcamine type activator, naphthalenesulfonic acid type activator, Na 2 SO 4, sodium hydroxide, water glass and alkaline waste slurry.
7. a preparation method of light energy-saving concrete for underground filling is characterized by comprising the following steps:
(1) Weighing the raw materials according to the parts by weight of the light energy-saving concrete for underground filling of any one of claims 1 to 6;
(2) Drying, filter-pressing or airing the admixture until the water content is less than 20% for later use; or the admixture is slurry, wherein the solid proportion with the fineness of less than 75 mu m accounts for more than 80 percent of the total solid content proportion of the slurry;
(3) mixing the gelled material and the dried admixture, and uniformly stirring to obtain a mixture;
(4) Adding water into the mixture, and stirring and mixing uniformly to obtain slurry;
(5) Foaming a foaming agent to form foam, adding the foam into the slurry, and uniformly stirring and mixing to obtain the light energy-saving concrete for underground filling;
The preparation method of the light energy-saving concrete for underground filling also comprises the operation of adding an exciting agent: adding the excitant into the admixture in an atomized and powdery form, or mixing the excitant with water and adding the excitant into the admixture, or adding the excitant into the slurry together with the foam.
8. The method for preparing the lightweight energy-saving concrete for underground filling according to claim 7, further comprising the operation of adding solid additives: and mixing the solid additive, the cementing material and the dried admixture, and uniformly stirring to obtain a mixture.
9. The method for preparing lightweight energy-saving concrete for underground filling according to claim 7 or 8, wherein the mixing in the step (3) is performed by: stirring and mixing for 2-10min at the rotating speed of 50-300 r/min;
The stirring and mixing operation in the step (4) is as follows: stirring and mixing for 2-10min at the rotating speed of 50-300 r/min.
10. The light energy-saving concrete for underground filling according to any one of claims 1 to 6 is used for roadbed filling, abutment back filling, rail transit roadbed filling, high-speed railway roadbed filling, underground pipeline filling, underground cavity filling or emergency filling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910838103.8A CN110550894A (en) | 2019-09-05 | 2019-09-05 | light energy-saving concrete for underground filling and preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910838103.8A CN110550894A (en) | 2019-09-05 | 2019-09-05 | light energy-saving concrete for underground filling and preparation method and application thereof |
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| Publication Number | Publication Date |
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| CN110550894A true CN110550894A (en) | 2019-12-10 |
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| CN201910838103.8A Pending CN110550894A (en) | 2019-09-05 | 2019-09-05 | light energy-saving concrete for underground filling and preparation method and application thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111995269A (en) * | 2020-08-06 | 2020-11-27 | 广东同创科鑫环保有限公司 | Red mud-based cementing material and preparation method and application thereof |
| CN116423663A (en) * | 2023-05-11 | 2023-07-14 | 邯郸市佰山建筑装饰工程有限公司 | Negative carbon production method of foam concrete |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105036790A (en) * | 2015-06-29 | 2015-11-11 | 河南华泰建材开发有限公司 | Lightweight foam soil for changing and filling special metro subgrade |
| CN105174997A (en) * | 2015-08-07 | 2015-12-23 | 河南华泰建材开发有限公司 | Light foamed soil for high speed railway station maintenance and change filling |
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2019
- 2019-09-05 CN CN201910838103.8A patent/CN110550894A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105036790A (en) * | 2015-06-29 | 2015-11-11 | 河南华泰建材开发有限公司 | Lightweight foam soil for changing and filling special metro subgrade |
| CN105174997A (en) * | 2015-08-07 | 2015-12-23 | 河南华泰建材开发有限公司 | Light foamed soil for high speed railway station maintenance and change filling |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111995269A (en) * | 2020-08-06 | 2020-11-27 | 广东同创科鑫环保有限公司 | Red mud-based cementing material and preparation method and application thereof |
| CN111995269B (en) * | 2020-08-06 | 2022-03-29 | 广东同创科鑫环保有限公司 | Red mud-based cementing material and preparation method and application thereof |
| CN116423663A (en) * | 2023-05-11 | 2023-07-14 | 邯郸市佰山建筑装饰工程有限公司 | Negative carbon production method of foam concrete |
| CN116423663B (en) * | 2023-05-11 | 2023-11-03 | 宁波海纳商品混凝土有限公司 | Negative carbon production method of foam concrete |
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