CN116854431B - High-strength concrete composite material and preparation method thereof - Google Patents
High-strength concrete composite material and preparation method thereof Download PDFInfo
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- CN116854431B CN116854431B CN202310837357.4A CN202310837357A CN116854431B CN 116854431 B CN116854431 B CN 116854431B CN 202310837357 A CN202310837357 A CN 202310837357A CN 116854431 B CN116854431 B CN 116854431B
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- 239000002131 composite material Substances 0.000 title claims abstract description 48
- 239000011372 high-strength concrete Substances 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 64
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000004568 cement Substances 0.000 claims abstract description 31
- 239000000835 fiber Substances 0.000 claims abstract description 28
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 27
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 25
- 239000011707 mineral Substances 0.000 claims abstract description 25
- 239000000843 powder Substances 0.000 claims abstract description 22
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 21
- 239000006004 Quartz sand Substances 0.000 claims abstract description 21
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 21
- 229910001570 bauxite Inorganic materials 0.000 claims abstract description 21
- 239000010881 fly ash Substances 0.000 claims abstract description 21
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 21
- 239000010440 gypsum Substances 0.000 claims abstract description 21
- 239000004571 lime Substances 0.000 claims abstract description 21
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 21
- 229910021487 silica fume Inorganic materials 0.000 claims abstract description 21
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 238000003756 stirring Methods 0.000 claims description 70
- 238000002156 mixing Methods 0.000 claims description 54
- 239000000463 material Substances 0.000 claims description 36
- 239000002002 slurry Substances 0.000 claims description 18
- 239000011398 Portland cement Substances 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 239000004567 concrete Substances 0.000 abstract description 13
- 230000000052 comparative effect Effects 0.000 description 8
- 238000011161 development Methods 0.000 description 3
- 239000004574 high-performance concrete Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a high-strength concrete composite material and a preparation method thereof, wherein the high-strength concrete composite material is prepared from the following raw materials in parts by weight: 20-40 parts of cement, 5-10 parts of fly ash, 30-60 parts of quartz sand, 20-50 parts of calcined bauxite, 5-7 parts of silica fume, 3-5 parts of mineral powder, 1-3 parts of lime, 4-6 parts of fiber, 2-4 parts of gypsum, 1-2 parts of nano silicon dioxide, 0.2-0.5 part of water reducer and 8-12 parts of water; the high-strength concrete composite material can improve the workability and the compactness of the concrete composite material by selecting the raw materials and limiting the dosage of the raw materials, thereby remarkably improving the mechanical property of the prepared high-strength concrete composite material and expanding the application field of concrete.
Description
Technical Field
The invention relates to the technical field of concrete, in particular to a high-strength concrete composite material and a preparation method thereof.
Background
Concrete plays an important role in construction engineering as the most widely used and mature construction material in civil engineering. Because the concrete has large-particle stones and small-particle sand and cement in the components, the internal space of the common concrete is relatively dispersed, and the structural mechanism of the concrete has a great room for improvement, so that under the action of impact or explosion load, the concrete cracks and peels off and even loses structural integrity due to the brittleness of the concrete.
The high-strength high-performance concrete has the advantages of high strength, high corrosion resistance and durability, reduced structural maintenance cost and reconstruction cost, and the like, and the technical development of the high-strength high-performance concrete becomes one of the concrete technologies which are focused on in the building industry. Meanwhile, along with the development trend of high-rise and super high-rise and large span of building design, the high-strength and super high-strength high-performance concrete has outstanding application advantages in large-scale projects such as super high-rise buildings, cross-sea bridges, offshore oil extraction platforms and the like. Therefore, development of high-strength concrete has important practical significance.
In view of this, the present invention has been made.
Disclosure of Invention
The invention aims to provide a high-strength concrete composite material and a preparation method thereof, and the high-strength concrete composite material has excellent mechanical properties and can better meet the related requirements of high-rise large-span buildings.
In order to achieve the above object of the present invention, the following technical solutions are specifically adopted:
the invention provides a high-strength concrete composite material, which is prepared from the following raw materials in parts by weight:
20-40 parts of cement, 5-10 parts of fly ash, 30-60 parts of quartz sand, 20-50 parts of calcined bauxite, 5-7 parts of silica fume, 3-5 parts of mineral powder, 1-3 parts of lime, 4-6 parts of fiber, 2-4 parts of gypsum, 1-2 parts of nano silicon dioxide, 0.2-0.5 part of water reducer and 8-12 parts of water.
Preferably, the high-strength concrete composite material is prepared from the following raw materials in parts by weight:
25-35 parts of cement, 6-8 parts of fly ash, 40-50 parts of quartz sand, 30-40 parts of calcined bauxite, 6-7 parts of silica fume, 3-4 parts of mineral powder, 2-3 parts of lime, 5-6 parts of fiber, 3-4 parts of gypsum, 1-2 parts of nano silicon dioxide, 0.3-0.5 part of water reducer and 10-12 parts of water
Preferably, the high-strength concrete composite material is prepared from the following raw materials in parts by weight:
30 parts of cement, 8 parts of fly ash, 45 parts of quartz sand, 35 parts of calcined bauxite, 6 parts of silica fume, 4 parts of mineral powder, 2 parts of lime, 5 parts of fiber, 3 parts of gypsum, 1.6 parts of nano silicon dioxide, 0.4 part of water reducer and 10 parts of water.
Preferably, the cement is portland cement, and the portland cement strength grade is 52.5 or 62.5.
Preferably, the water reducing agent is a polycarboxylic acid high-performance water reducing agent, and the water reducing efficiency is not lower than 20%.
Preferably, the fibers are steel fibers.
Preferably, the length of the steel fiber is 10-60 mm, and the diameter is 0.2-1 mm.
The second aspect of the invention provides a preparation method of the high-strength concrete composite material, which comprises the following steps:
(a) Stirring and uniformly mixing the fly ash, quartz sand, calcined bauxite and mineral powder to obtain a first mixed material;
(b) Stirring and uniformly mixing cement, silica fume, lime, nano silicon dioxide and gypsum to obtain a second mixed material;
(c) Adding the water reducer into water and stirring uniformly to obtain slurry;
(d) And stirring and mixing the second mixed material and the slurry uniformly, adding the first mixed material, stirring and mixing uniformly, and adding the fiber, stirring and mixing uniformly to obtain the high-strength concrete composite material.
Preferably, the rotation speed of stirring and uniformly mixing is 120-200 r/min.
Compared with the prior art, the invention has the beneficial effects that at least:
the high-strength concrete composite material can improve the workability and the compactness of the concrete composite material by selecting the raw materials and limiting the dosage of the raw materials, thereby remarkably improving the mechanical property of the prepared high-strength concrete composite material and expanding the application field of concrete.
Detailed Description
Embodiments of the technical scheme of the present invention will be described in detail below with reference to the embodiments. The following examples are only for more clearly illustrating the technical aspects of the present invention, and thus are merely examples, and are not intended to limit the scope of the present invention.
It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.
The following examples used the following raw materials:
water reducing agent: polycarboxylic acid high-performance water reducer purchased from Hebei holy building materials science and technology Co., ltd;
and (3) fibers: fiber-rigid, 0.22 x 13mm, purchased from tay's fiber company, inc;
mineral powder: purchased from Hebei Zong Run mineral products limited;
silica fume: purchased in the strong east mineral processing plant in the life county;
calcining bauxite: purchased in the mineral processing plant of the strong east of the life county.
Example 1
The embodiment is a high-strength concrete composite material, which is prepared from the following raw materials in parts by weight:
20 parts of cement, 5 parts of fly ash, 30 parts of quartz sand, 20 parts of calcined bauxite, 7 parts of silica fume, 3 parts of mineral powder, 3 parts of lime, 4 parts of fiber, 2 parts of gypsum, 1 part of nano silicon dioxide, 0.2 part of water reducer and 8 parts of water;
the cement was Portland cement with a strength grade of 62.5.
The preparation method of the high-strength concrete composite material comprises the following steps:
(a) Stirring and uniformly mixing the fly ash, quartz sand, calcined bauxite and mineral powder to obtain a first mixed material;
(b) Stirring and uniformly mixing cement, silica fume, lime, nano silicon dioxide and gypsum to obtain a second mixed material;
(c) Adding the water reducer into water and stirring uniformly to obtain slurry;
(d) Stirring and mixing the second mixed material and the slurry uniformly, adding the first mixed material, stirring and mixing uniformly, and adding the fiber, stirring and mixing uniformly to obtain the high-strength concrete composite material;
wherein the stirring rotation speed of stirring and evenly mixing is 120r/min.
Example 2
The embodiment is a high-strength concrete composite material, which is prepared from the following raw materials in parts by weight:
40 parts of cement, 10 parts of fly ash, 60 parts of quartz sand, 50 parts of calcined bauxite, 5 parts of silica fume, 5 parts of mineral powder, 1 part of lime, 6 parts of fiber, 4 parts of gypsum, 2 parts of nano silicon dioxide, 0.5 part of water reducer and 12 parts of water;
the cement was Portland cement with a strength grade of 52.5.
The preparation method of the high-strength concrete composite material comprises the following steps:
(a) Stirring and uniformly mixing the fly ash, quartz sand, calcined bauxite and mineral powder to obtain a first mixed material;
(b) Stirring and uniformly mixing cement, silica fume, lime, nano silicon dioxide and gypsum to obtain a second mixed material;
(c) Adding the water reducer into water and stirring uniformly to obtain slurry;
(d) Stirring and mixing the second mixed material and the slurry uniformly, adding the first mixed material, stirring and mixing uniformly, and adding the fiber, stirring and mixing uniformly to obtain the high-strength concrete composite material;
wherein the stirring rotation speed of stirring and evenly mixing is 200r/min.
Example 3
The embodiment is a high-strength concrete composite material, which is prepared from the following raw materials in parts by weight:
25 parts of cement, 6 parts of fly ash, 50 parts of quartz sand, 30 parts of calcined bauxite, 7 parts of silica fume, 3 parts of mineral powder, 3 parts of lime, 5 parts of fiber, 3 parts of gypsum, 2 parts of nano silicon dioxide, 0.3 part of water reducer and 12 parts of water;
the cement was Portland cement with a strength grade of 62.5.
The preparation method of the high-strength concrete composite material comprises the following steps:
(a) Stirring and uniformly mixing the fly ash, quartz sand, calcined bauxite and mineral powder to obtain a first mixed material;
(b) Stirring and uniformly mixing cement, silica fume, lime, nano silicon dioxide and gypsum to obtain a second mixed material;
(c) Adding the water reducer into water and stirring uniformly to obtain slurry;
(d) Stirring and mixing the second mixed material and the slurry uniformly, adding the first mixed material, stirring and mixing uniformly, and adding the fiber, stirring and mixing uniformly to obtain the high-strength concrete composite material;
wherein the stirring rotation speed of stirring and evenly mixing is 150r/min.
Example 4
The embodiment is a high-strength concrete composite material, which is prepared from the following raw materials in parts by weight:
35 parts of cement, 8 parts of fly ash, 40 parts of quartz sand, 40 parts of calcined bauxite, 6 parts of silica fume, 4 parts of mineral powder, 2 parts of lime, 6 parts of fiber, 4 parts of gypsum, 1 part of nano silicon dioxide, 0.5 part of water reducer and 10 parts of water;
the cement was Portland cement with a strength grade of 52.5.
The preparation method of the high-strength concrete composite material comprises the following steps:
(a) Stirring and uniformly mixing the fly ash, quartz sand, calcined bauxite and mineral powder to obtain a first mixed material;
(b) Stirring and uniformly mixing cement, silica fume, lime, nano silicon dioxide and gypsum to obtain a second mixed material;
(c) Adding the water reducer into water and stirring uniformly to obtain slurry;
(d) Stirring and mixing the second mixed material and the slurry uniformly, adding the first mixed material, stirring and mixing uniformly, and adding the fiber, stirring and mixing uniformly to obtain the high-strength concrete composite material;
wherein the stirring rotation speed of stirring and evenly mixing is 150r/min.
Example 5
The embodiment is a high-strength concrete composite material, which is prepared from the following raw materials in parts by weight:
30 parts of cement, 8 parts of fly ash, 45 parts of quartz sand, 35 parts of calcined bauxite, 6 parts of silica fume, 4 parts of mineral powder, 2 parts of lime, 5 parts of fiber, 3 parts of gypsum, 1.6 parts of nano silicon dioxide, 0.4 part of water reducer and 10 parts of water;
the cement was Portland cement with a strength grade of 52.5.
The preparation method of the high-strength concrete composite material comprises the following steps:
(a) Stirring and uniformly mixing the fly ash, quartz sand, calcined bauxite and mineral powder to obtain a first mixed material;
(b) Stirring and uniformly mixing cement, silica fume, lime, nano silicon dioxide and gypsum to obtain a second mixed material;
(c) Adding the water reducer into water and stirring uniformly to obtain slurry;
(d) Stirring and mixing the second mixed material and the slurry uniformly, adding the first mixed material, stirring and mixing uniformly, and adding the fiber, stirring and mixing uniformly to obtain the high-strength concrete composite material;
wherein the stirring rotation speed of stirring and evenly mixing is 150r/min.
Comparative example 1
The comparative example is a high-strength concrete composite material, which is prepared from the following raw materials in parts by weight:
30 parts of cement, 8 parts of fly ash, 25 parts of quartz sand, 55 parts of calcined bauxite, 6 parts of silica fume, 4 parts of mineral powder, 2 parts of lime, 5 parts of fiber, 3 parts of gypsum, 1.6 parts of nano silicon dioxide, 0.4 part of water reducer and 10 parts of water;
the cement was Portland cement with a strength grade of 52.5.
The preparation method of the high-strength concrete composite material comprises the following steps:
(a) Stirring and uniformly mixing the fly ash, quartz sand and mineral powder to obtain a first mixed material;
(b) Stirring and uniformly mixing cement, silica fume, lime, nano silicon dioxide and gypsum to obtain a second mixed material;
(c) Adding the water reducer into water and stirring uniformly to obtain slurry;
(d) Stirring and mixing the second mixed material and the slurry uniformly, adding the first mixed material, stirring and mixing uniformly, and adding the fiber, stirring and mixing uniformly to obtain the high-strength concrete composite material;
wherein the stirring rotation speed of stirring and evenly mixing is 150r/min.
Comparative example 2
The comparative example is a high-strength concrete composite material, which is prepared from the following raw materials in parts by weight:
30 parts of cement, 8 parts of fly ash, 45 parts of quartz sand, 35 parts of calcined bauxite, 10 parts of mineral powder, 2 parts of lime, 5 parts of fiber, 3 parts of gypsum, 1.6 parts of nano silicon dioxide, 0.4 part of water reducer and 10 parts of water;
the cement was Portland cement with a strength grade of 52.5.
The preparation method of the high-strength concrete composite material comprises the following steps:
(a) Stirring and uniformly mixing the fly ash, quartz sand, calcined bauxite and mineral powder to obtain a first mixed material;
(b) Stirring and uniformly mixing cement, silica fume, lime, nano silicon dioxide and gypsum to obtain a second mixed material;
(c) Adding the water reducer into water and stirring uniformly to obtain slurry;
(d) Stirring and mixing the second mixed material and the slurry uniformly, adding the first mixed material, stirring and mixing uniformly, and adding the fiber, stirring and mixing uniformly to obtain the high-strength concrete composite material;
wherein the stirring rotation speed of stirring and evenly mixing is 150r/min.
Experimental example
The high-strength concrete composite materials of examples 3 to 5 and comparative examples 1 to 2 were obtained, respectively;
the mechanical properties of the concrete composite materials with different high strengths are detected according to the detection method in GB/T50081-2002, and the detection results are shown in Table 1;
TABLE 1
| Group of | Compressive strength (28 d, MPa) | Compressive strength (60 d, MPa) |
| Example 3 | 145.1 | 187.9 |
| Example 4 | 157.3 | 206.8 |
| Example 5 | 163.7 | 219.2 |
| Comparative example 1 | 126.4 | 172.5 |
| Comparative example 2 | 137.2 | 198.6 |
As can be seen from table 1:
compared with the comparative example, the high-strength concrete composite material prepared by the embodiment of the application has more excellent mechanical properties.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention, and are intended to be included within the scope of the appended claims and description.
Claims (6)
1. The high-strength concrete composite material is characterized by being prepared from the following raw materials in parts by weight:
30 parts of cement, 8 parts of fly ash, 45 parts of quartz sand, 35 parts of calcined bauxite, 6 parts of silica fume, 4 parts of mineral powder, 2 parts of lime, 5 parts of fiber, 3 parts of gypsum, 1.6 parts of nano silicon dioxide, 0.4 part of water reducer and 10 parts of water;
the cement is Portland cement, and the strength grade of the Portland cement is 52.5 or 62.5.
2. The high-strength concrete composite material according to claim 1, wherein the water reducing agent is a polycarboxylic acid-based high-performance water reducing agent, and the water reducing efficiency is not lower than 20%.
3. The high strength concrete composite according to claim 1, wherein the fibers are steel fibers.
4. A high strength concrete composite according to claim 3, wherein the steel fibres have a length of 10 to 60mm and a diameter of 0.2 to 1mm.
5. The method for preparing the high-strength concrete composite material according to any one of claims 1 to 4, which is characterized by comprising the following steps:
(a) Stirring and uniformly mixing the fly ash, quartz sand, calcined bauxite and mineral powder to obtain a first mixed material;
(b) Stirring and uniformly mixing cement, silica fume, lime, nano silicon dioxide and gypsum to obtain a second mixed material;
(c) Adding the water reducer into water and stirring uniformly to obtain slurry;
(d) And stirring and mixing the second mixed material and the slurry uniformly, adding the first mixed material, stirring and mixing uniformly, and adding the fiber, stirring and mixing uniformly to obtain the high-strength concrete composite material.
6. The preparation method of claim 5, wherein the stirring and mixing speed is 120-200 r/min.
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- 2023-07-10 CN CN202310837357.4A patent/CN116854431B/en active Active
Patent Citations (6)
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| CN1934052A (en) * | 2004-02-13 | 2007-03-21 | 埃法日Tp公司 | Ultra-high-performance self-compacting concrete, its preparation method and uses |
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