CN113816657A - Economic and environment-friendly all-light concrete and preparation method thereof - Google Patents
Economic and environment-friendly all-light concrete and preparation method thereof Download PDFInfo
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- CN113816657A CN113816657A CN202111025751.5A CN202111025751A CN113816657A CN 113816657 A CN113816657 A CN 113816657A CN 202111025751 A CN202111025751 A CN 202111025751A CN 113816657 A CN113816657 A CN 113816657A
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
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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
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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
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
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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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- 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
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
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- 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 relates to an economic and environment-friendly all-light concrete and a preparation method thereof, belongs to the technical field of concrete, and is used for solving the problems of resource exhaustion and environmental pollution caused by natural aggregate mining and realizing the complete replacement of light aggregate by industrial solid waste. The concrete comprises the following components in parts by weight: cloud concrete stone: 650-750 parts; cement: 350-550 parts; silica fume: 40-90 parts; fly ash: 0-60 parts; shale ceramic sand: 300-500 parts; water reducing agent: 4-8 parts; floating beads: 0-80 parts; water: 5-90 parts. According to the preparation method, the bond strength between the lightweight aggregate and the cementing material is improved and the interface defects are reduced in a pre-soaking, dry mixing and grading feeding mode in sequence, and the grading feeding method can fully ensure the internal structural homogeneity of the concrete, so that the strength grade of the lightweight aggregate concrete is greatly improved, and the breakthrough of the strength grade of the lightweight aggregate concrete from LC40 to LC45-LC60 is realized.
Description
Technical Field
The invention relates to the technical field of concrete, in particular to economic and environment-friendly all-light concrete and a preparation method thereof.
Background
The concrete has been used in civil and architectural engineering for more than one hundred years, and the dosage of the concrete is about 10 hundred million.m per year according to the recent incomplete statistics in China3. However, more than half of the areas in China have serious shortage of natural sandstone aggregate resources, and even the natural sandstone in the areas with rich sandstone resources is greatly reduced or nearly exhausted, so that the adverse effect of the traditional concrete material manufacturing on the environment is more and more obvious in the contemporary society emphasizing ecological protection. With the deep development of modern high-rise and super high-rise buildings and large-span bridges, people put forward a series of requirements on concrete materials, such as light weight, high strength, heat preservation, heat insulation, environmental protection and the like. Therefore, promoting the development of green buildings is an important measure for improving the livelihood of people, saving construction resources and building an environment-friendly society.
The lightweight aggregate concrete (lightweight concrete) has the advantages of light weight, heat preservation, fire resistance, frost resistance, impermeability and the like, and has the characteristics of economic benefit, energy-saving and environment-friendly effect, wide application range and the like, so the lightweight aggregate concrete is increasingly concerned in engineering application. However, the application of lightweight aggregate concrete in the engineering of China still has a main problem that the strength of the lightweight aggregate concrete is low. The strength grade of the currently used lightweight aggregate concrete is mainly concentrated below LC40, so that the application range of the lightweight aggregate concrete is limited, the lightweight aggregate concrete is mainly applied to heat preservation and envelope structures, and rarely applied to main structures. In addition, most of the existing lightweight aggregate concrete is semi-lightweight concrete, namely the replacement rate of the lightweight aggregate is far lower than 100%. Therefore, the solid waste utilization degree is insufficient, and the cost reduction is not obvious.
In order to relieve the pressure of natural aggregate supply, solve the problems of resource exhaustion and environmental pollution caused by natural aggregate mining, realize the recycling of industrial waste, and reduce the weight of concrete members, it is necessary to develop economic and environment-friendly all-light concrete and a preparation method thereof.
Disclosure of Invention
The invention aims to provide economic and environment-friendly all-light concrete and a preparation method thereof, which effectively solve the problem of serious shortage of natural sandstone aggregate resources on the basis of ensuring the strength grade of LC45 and above and have economic, energy-saving and environment-friendly effects.
In order to solve the technical problems, the technical scheme of the invention is as follows:
an economic and environment-friendly all-light concrete comprises the following components in parts by weight: cloud concrete stone: 650-750 parts; cement: 350-550 parts; silica fume: 40-90 parts; fly ash: 0-60 parts; shale ceramic sand: 300-500 parts; water reducing agent: 4-8 parts; floating beads: 0-80 parts; water: 5-90 parts.
Further, the composition comprises the following components in parts by weight: cloud concrete stone: 674 parts of (1); cement: 420 parts of (B); silica fume: 84 parts of a mixture; fly ash: 56 parts of; shale ceramic sand: 319 parts of a binder; water reducing agent: 10 parts of (A); floating beads: 60 parts; water: 87 parts.
Further, the composition comprises the following components in parts by weight: cloud concrete stone: 674 parts of (1); cement: 420 parts of (B); silica fume: 84 parts of a mixture; shale ceramic sand: 319 parts of a binder; water reducing agent: 4.4 parts; floating beads: 60 parts; water: 7.2 parts.
Furthermore, the cloud concrete stone is high-strength ceramsite with a continuous gradation core-shell structure, which is obtained by mixing 5-10 mm and 11-16 mm in particle size according to the proportion of 3: 7.
Furthermore, the particle size of the cloud concrete sand is 2mm-4mm continuous gradation.
Furthermore, the shale ceramic sand adopts continuous gradation, and the grain diameter is 0-5 mm.
Further, the floating bead has an apparent density of 0.7X 103kg/m3-0.9×103kg/m3The pulverized coal gray spherical floating beads.
Furthermore, the solid content of the water reducing agent is 20%, and the water reducing rate is more than 30%.
The invention also provides a preparation method of the economic and environment-friendly all-light concrete, which comprises the following steps:
step S1, pre-wetting the cloud concrete stone and the shale ceramic sand to make the cloud concrete stone and the shale ceramic sand reach a saturated surface dry state;
step S2, dry-mixing the silica fume, the cement and the floating beads in a concrete mixer for 1.0min, and uniformly stirring to obtain a primary mixed dry material;
step S3, adding the cloud concrete stone, 40% of water and the admixture into the primary mixed dry material obtained in the step S2, stirring for 1.5min, and forming a primary mixed material after stirring;
step S4, adding shale ceramic sand, 40% of water and an additive into the primary mixed material obtained in the step S3, stirring for 1.5min, and forming a secondary mixed material after stirring;
step S5, adding the remaining 20 percent of water and the additive into the medium mixture obtained in the step S4;
and S6, stirring the final mixture obtained in the step S5 for 2.0min to obtain the economic and environment-friendly all-light concrete.
Compared with the prior art, the invention has the beneficial technical effects that:
(1) the invention provides economic and environment-friendly all-light concrete which comprises the following components in parts by weight: cloud concrete stone: 650-750 parts; cement: 350-550 parts; silica fume: 40-90 parts; fly ash: 0-60 parts; shale ceramic sand: 300-500 parts; water reducing agent: 4-8 parts; floating beads: 0-80 parts; water: 5-90 parts.
(2) The economic and environment-friendly all-light concrete provided by the invention is designed according to the mixing proportion, the all-light concrete with the strength grade LC45-LC60 is successfully developed, the strength grade of the lightweight aggregate concrete is greatly improved on the basis of reducing the volume weight of the concrete, and the engineering popularization and application of the lightweight aggregate concrete are facilitated.
(3) The economic and environment-friendly all-light concrete provided by the invention adopts solid waste as the light aggregate to 100% replace natural sandstone, effectively relieves the condition of serious resource shortage of natural sandstone aggregate, and has obvious environmental protection benefit.
(4) The economic and environment-friendly all-light concrete provided by the invention adopts solid waste as the light aggregate, can greatly reduce the concrete cost, has remarkable economic benefit and has wide popularization and application prospects.
(5) The preparation method of the economic and environment-friendly all-light concrete provided by the invention adopts 'pre-dipping-dry mixing-graded feeding', so that the bond stress between the light aggregate and the cementing material is improved, the interface defect is reduced, and the homogeneity of the internal structure of the concrete can be fully ensured by the graded feeding method, so that the strength grade of the light aggregate concrete is greatly improved, and the breakthrough of the strength grade of the light aggregate concrete from LC40 to LC45-LC60 is realized.
Drawings
FIG. 1 is a flow chart of an economical and environment-friendly method for preparing lightweight concrete according to an embodiment of the present invention.
Detailed Description
The economic and environment-friendly lightweight concrete and the preparation method thereof provided by the invention are further described in detail by combining the drawings and the specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. For convenience of description, the directions of "up" and "down" described below are the same as the directions of "up" and "down" in the drawings, but this is not a limitation of the technical solution of the present invention.
The economic and environment-friendly type all-light concrete and the preparation method thereof are described in detail below with reference to fig. 1.
Example 1
The economic and environment-friendly all-light concrete provided by the embodiment comprises the components of cloud concrete stone, cement, silica fume, fly ash, mineral powder, shale ceramic sand, cloud concrete sand, a water reducing agent, floating beads and water, wherein the specific parts by weight of the components are shown in the table 1 in detail.
In addition, the used cloud concrete stone is high-strength ceramsite with a continuous gradation core-shell structure, which is obtained by mixing 5-10 mm and 11-16 mm in particle size according to the proportion of 3: 7; the particle size of the cloud concrete sand is 2mm-4mm, and the cloud concrete sand is in continuous gradation; the shale ceramic sand adopts continuous gradation, and the grain diameter is 0-5 mm; the adopted floating bead has an apparent density of 0.7 multiplied by 103kg/m3-0.9×103kg/m3The pulverized coal gray spherical floating beads; the solid content of the adopted water reducing agent is 20 percent, and the water reducing rate is more than 30 percent.
Example 2 to example 4
The difference from example 1 is that the weight parts of the components are different, and the detailed numerical values are shown in Table 1.
TABLE 1 LC45 complete light concrete component weight part number schematic table
Performance detection test:
the concrete samples prepared in the examples were subjected to a compressive strength test, wherein the concrete samples were cubes of 15cm × 15cm × 15cm, each set of three concrete samples, and cured by a standard method (temperature 20 ℃ ± 2 ℃, relative humidity of 95% RH or more) after molding; the dry density is measured by a broken test piece drying method. The test standards are GB/T50081-2019 and JGJ 51-2002, and the obtained performance results are shown in Table 2.
TABLE 2 compressive Strength Properties and Dry Density test data sheet
And (4) analyzing results:
the combination of performance result detection data can obtain that the 28d strength grade of the lightweight aggregate concrete with the strength grade of LC45 or above can be prepared by adopting the cloud concrete stones. It can be seen from the combination of examples 1 to 4 that the compressive strength of lightweight aggregate concrete is significantly reduced when the amount of water used is increased, and thus the amount of water used should be controlled when preparing high-strength lightweight aggregate concrete.
Example 5
Referring to fig. 1, the present invention further provides a method for preparing the economic and environmental friendly lightweight concrete, which comprises the following steps:
step S1: pre-wetting the cloud concrete stone and the cloud concrete sand shale ceramic sand to enable the ceramic sand to reach a saturated surface dry state;
step S2: dry-mixing the silica fume, the cement and the floating beads in a concrete mixer for 1.0min, and uniformly stirring to obtain a primary mixed dry material;
step S3: adding the cloud concrete stone, 40% of water and the additive into the primary mixed dry material obtained in the step S2, stirring for 1.5min, and forming a primary mixed material after stirring;
step S4: adding the cloud concrete sand, 40% of water and the additive into the primary mixed material obtained in the step S3, stirring for 1.5min, and forming a secondary mixed material after stirring;
step S5: and (4) adding shale ceramic sand, the remaining 20% of water and the additive into the mixed material obtained in the step (S4) and stirring for 2.0min to obtain the all-light concrete.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (9)
1. The economic and environment-friendly type all-light concrete is characterized by comprising the following components in parts by weight: cloud concrete stone: 650-750 parts; cement: 350-550 parts; silica fume: 40-90 parts; fly ash: 0-60 parts; shale ceramic sand: 300-500 parts; water reducing agent: 4-8 parts; floating beads: 0-80 parts; water: 5-90 parts.
2. The economic and environment-friendly type all-light concrete according to claim 1, characterized by comprising the following components in parts by weight: cloud concrete stone: 674 parts of (1); cement: 420 parts of (B); silica fume: 84 parts of a mixture; fly ash: 56 parts of; shale ceramic sand: 319 parts of a binder; water reducing agent: 10 parts of (A); floating beads: 60 parts; water: 87 parts.
3. The economic and environment-friendly type all-light concrete according to claim 1, characterized by comprising the following components in parts by weight: cloud concrete stone: 674 parts of (1); cement: 420 parts of (B); silica fume: 84 parts of a mixture; shale ceramic sand: 319 parts of a binder; water reducing agent: 4.4 parts; floating beads: 60 parts; water: 7.2 parts.
4. The economic and environment-friendly type all-light concrete according to claim 1, characterized in that the cloud concrete stone is continuous gradation high-strength ceramsite with core-shell structure, which is obtained by mixing 5mm-10mm and 11mm-16mm in grain size in a ratio of 3: 7.
5. The economic and environment-friendly type all-light concrete according to claim 1, wherein the particle size of the cloud concrete sand is 2mm-4mm continuous gradation.
6. The economical and environment-friendly all-light concrete according to claim 1, wherein the shale ceramic sand adopts continuous gradation, and the grain diameter is 0-5 mm.
7. The economical and environment-friendly type all-light concrete according to claim 1, wherein the floating bead has an apparent density of 0.7 x 103kg/m3-0.9×103kg/m3The pulverized coal gray spherical floating beads.
8. The economic and environment-friendly all-light concrete according to claim 1, wherein the solid content of the water reducing agent is 20%, and the water reducing rate is more than 30%.
9. The preparation method of the economic and environment-friendly all-light concrete is characterized by comprising the following steps:
step S1, pre-wetting the cloud concrete stone and the shale ceramic sand to make the cloud concrete stone and the shale ceramic sand reach a saturated surface dry state;
step S2, dry-mixing the silica fume, the cement and the floating beads in a concrete mixer for 1.0min, and uniformly stirring to obtain a primary mixed dry material;
step S3, adding the cloud concrete stone, 40% of water and the admixture into the primary mixed dry material obtained in the step S2, stirring for 1.5min, and forming a primary mixed material after stirring;
step S4, adding shale ceramic sand, 40% of water and an additive into the primary mixed material obtained in the step S3, stirring for 1.5min, and forming a secondary mixed material after stirring;
step S5, adding the remaining 20 percent of water and the additive into the medium mixture obtained in the step S4;
and S6, stirring the final mixture obtained in the step S5 for 2.0min to obtain the economic and environment-friendly all-light concrete.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114933453A (en) * | 2022-06-09 | 2022-08-23 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Anti-explosion light high-performance concrete and preparation method thereof |
| CN115417629A (en) * | 2022-09-05 | 2022-12-02 | 上海建工集团股份有限公司 | LC60 and above light high-strength concrete and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103803904A (en) * | 2013-12-30 | 2014-05-21 | 北京新航建材集团有限公司 | Self-compacting light aggregate concrete and preparation method thereof |
| CN104788050A (en) * | 2015-01-27 | 2015-07-22 | 浙江大学 | Ceramsite lightweight aggregate structural concrete and preparation method thereof |
| CN112936549A (en) * | 2021-02-05 | 2021-06-11 | 宁夏金石誉新材料科技发展有限公司 | Preparation method of light high-strength assembly type enclosure wall |
-
2021
- 2021-09-02 CN CN202111025751.5A patent/CN113816657A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103803904A (en) * | 2013-12-30 | 2014-05-21 | 北京新航建材集团有限公司 | Self-compacting light aggregate concrete and preparation method thereof |
| CN104788050A (en) * | 2015-01-27 | 2015-07-22 | 浙江大学 | Ceramsite lightweight aggregate structural concrete and preparation method thereof |
| CN112936549A (en) * | 2021-02-05 | 2021-06-11 | 宁夏金石誉新材料科技发展有限公司 | Preparation method of light high-strength assembly type enclosure wall |
Non-Patent Citations (1)
| Title |
|---|
| 雍本: "《特种混凝土设计与施工》", 30 September 1993, 中国建筑工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114933453A (en) * | 2022-06-09 | 2022-08-23 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Anti-explosion light high-performance concrete and preparation method thereof |
| CN115417629A (en) * | 2022-09-05 | 2022-12-02 | 上海建工集团股份有限公司 | LC60 and above light high-strength concrete and preparation method thereof |
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