CN113402238A - Medium-high temperature high-strength heat-resistant concrete - Google Patents
Medium-high temperature high-strength heat-resistant concrete Download PDFInfo
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- CN113402238A CN113402238A CN202110538504.9A CN202110538504A CN113402238A CN 113402238 A CN113402238 A CN 113402238A CN 202110538504 A CN202110538504 A CN 202110538504A CN 113402238 A CN113402238 A CN 113402238A
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- China
- Prior art keywords
- parts
- alumina
- concrete
- recycled
- bauxite
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000004567 concrete Substances 0.000 title claims abstract description 53
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 54
- 239000011449 brick Substances 0.000 claims abstract description 47
- 229910001570 bauxite Inorganic materials 0.000 claims abstract description 38
- 239000000203 mixture Substances 0.000 claims abstract description 17
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 16
- 229910017053 inorganic salt Inorganic materials 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000004568 cement Substances 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 239000011863 silicon-based powder Substances 0.000 claims abstract description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 150000004645 aluminates Chemical class 0.000 claims abstract description 8
- 239000002245 particle Substances 0.000 claims description 27
- 238000012216 screening Methods 0.000 claims description 9
- 238000009826 distribution Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000011819 refractory material Substances 0.000 abstract description 5
- 238000004064 recycling Methods 0.000 abstract description 2
- -1 light industry Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910021487 silica fume Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 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
- C04B28/06—Aluminous 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/30—Oxides other than silica
- C04B14/303—Alumina
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
- C04B18/165—Ceramic waste
-
- 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
- C04B2111/00431—Refractory 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
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
-
- 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
Abstract
The invention relates to the technical field of concrete, and discloses medium-high temperature high-strength heat-resistant concrete which comprises the following raw materials: 40-45 parts of a mixture, 42-47 parts of high bauxite, 4-6 parts of micro silicon powder and 7-9 parts of aluminate cement; the concrete is also added with an inorganic salt water reducing agent, and the inorganic salt water reducing agent accounts for 0.15-0.25% of the total weight of the concrete; the mixture is a mixture of cobblestones and recycled high-alumina bricks, and the mass ratio of the cobblestones to the recycled high-alumina bricks is 1: 1-3. The recycled high-alumina brick is used, so that the cost of the heat-resistant concrete is effectively reduced, and the aim of recycling resources is fulfilled; the invention has reasonable proportion, comprehensively uses the recycled high-alumina bricks and high-alumina bauxite as main refractory materials, and greatly improves the heat resistance of the heat-resistant concrete.
Description
Technical Field
The invention relates to the technical field of concrete, in particular to medium-high temperature high-strength heat-resistant concrete.
Background
Heat-resistant concrete has been widely used in the thermal equipment and the structures which are subjected to high temperature for a long time in the industries of metallurgy, chemical industry, petroleum, light industry, building materials and the like, such as the lining of an industrial chimney or flue, the refractory lining of an industrial kiln, the foundation and the shell of a high-temperature boiler. Compared with the traditional refractory brick, the heat-resistant concrete has the following characteristics: the production process is simple, and only a stirrer and a vibration forming machine are needed; the construction is simple and the mechanization is easy; the kiln with any structural form can be built, and the heat-resistant concrete can be used for building a complex kiln form according to the production process requirements, and the like. In order to realize the heat resistance of concrete, a refractory material needs to be added to the heat-resistant concrete, which increases the use cost of the heat-resistant concrete.
Disclosure of Invention
In order to solve the technical problems, the invention provides the following technical scheme:
the medium-high temperature high-strength heat-resistant concrete comprises the following raw materials: 40-45 parts of a mixture, 42-47 parts of high bauxite, 4-6 parts of micro silicon powder and 7-9 parts of aluminate cement; the concrete is also added with an inorganic salt water reducing agent, and the inorganic salt water reducing agent accounts for 0.15-0.25% of the total weight of the concrete; the mixture is a mixture of cobblestones and recycled high-alumina bricks, and the mass ratio of the cobblestones to the recycled high-alumina bricks is 1: 1-3.
Preferably, the concrete comprises the following raw materials in parts by weight: 40 parts of mixed material, 47 parts of high-alumina bauxite, 5 parts of micro silicon powder and 8 parts of aluminate cement; the concrete is also added with an inorganic salt water reducing agent, and the inorganic salt water reducing agent accounts for 0.2 percent of the total weight of the concrete.
Preferably, the Al of the recycled high-alumina brick2O3The content is more than 65 percent; the volume density of the recycled high-alumina brick is more than 2.3g/cm3。
Preferably, the recycled high-alumina brick is crushed and screened to obtain recycled high-alumina brick particles; the particle size distribution of the recycled high-alumina brick particles is 0.05-12 mm.
Preferably, the grade ratio of the recycled high-alumina brick particles is 5-12 mm: 1-5 mm: 0.05-1 mm and 5-8: 5-7: 4-6.
Preferably, the bauxite is bauxite chamotte; crushing and screening the bauxite chamotte to obtain bauxite chamotte particles; the grain size distribution of the bauxite chamotte particles is 0.05-3 mm.
Preferably, the grade ratio of the bauxite chamotte particles is 1-3 mm: 0.05-1 mm: 0.05-0.1 mm: 2: 1.
Preferably, the grading ratio of the cobblestones is 5-12 mm: 1-5 mm: 0.05-1 mm: 1: 1.
The invention has the following function principle:
the recycled high-alumina bricks are used as the raw materials of the heat-resistant concrete, and are used as the refractory materials in the heat-resistant concrete, so that the waste high-alumina bricks are recycled, and the cost of the heat-resistant concrete is reduced. The invention comprehensively uses the recycled high-alumina bricks and the high-alumina bauxite as main refractory materials, thereby greatly improving the heat resistance of the heat-resistant concrete.
The invention uses the silica fume as the mineral admixture, and the silica fume can be fully dispersed and filled in the gaps of the cement particles after being doped into the concrete, so that the slurry is more compact; ca (OH) generated after micro silicon powder hydrates cement2Has strong absorption capacity, forms well-developed calcium silicate gel, and greatly improves the strength of concrete.
Compared with the prior art, the invention has the beneficial effects that:
the recycled high-alumina brick is used, so that the cost of the heat-resistant concrete is effectively reduced, and the aim of recycling resources is fulfilled; the invention has reasonable proportion, comprehensively uses the recycled high-alumina bricks and high-alumina bauxite as main refractory materials, and greatly improves the heat resistance of the heat-resistant concrete.
Detailed Description
The present invention will be further described with reference to specific examples, which are illustrative of the invention and are not to be construed as limiting the invention.
Example 1
The medium-high temperature high-strength heat-resistant concrete comprises the following raw materials:
the concrete comprises the following raw materials in parts by weight: 40 parts of mixed material, 47 parts of high-alumina bauxite, 5 parts of micro silicon powder and 8 parts of aluminate cement; the mixture is a mixture of cobblestones and recycled high-alumina bricks, and the mass ratio of the cobblestones to the recycled high-alumina bricks is 1: 2. The concrete is also added with an inorganic salt water reducing agent, and the inorganic salt water reducing agent accounts for 0.2 percent of the total weight of the concrete.
Wherein Al of the high-alumina bricks is recovered2O3The content is more than 75 percent; the volume density of the recycled high-alumina brick is more than 2.3g/cm3。
Crushing and screening the recycled high-alumina bricks to obtain recycled high-alumina brick particles; the grade ratio of the recycled high-alumina brick particles is 5-12 mm: 1-5 mm: 0.05-1 mm and 7:5: 5.
The bauxite is bauxite chamotte; crushing and screening the bauxite chamotte to obtain bauxite chamotte particles; the grade ratio of the bauxite chamotte particles is 1-3 mm: 0.05-1 mm: 0.05-0.1 mm: 2: 1.
The grading ratio of the cobblestones is 5-12 mm: 1-5 mm: 0.05-1 mm: 1: 1.
Example 2
The medium-high temperature high-strength heat-resistant concrete comprises the following raw materials:
45 parts of mixture, 42 parts of high-alumina bauxite, 4 parts of micro silicon powder and 9 parts of aluminate cement; an inorganic salt water reducing agent is additionally added into the concrete, and the inorganic salt water reducing agent accounts for 0.25 percent of the total weight of the concrete; the mixture is a mixture of cobblestones and recycled high-alumina bricks, and the mass ratio of the cobblestones to the recycled high-alumina bricks is 1: 1.
Wherein Al of the high-alumina bricks is recovered2O3The content is more than 75 percent; the volume density of the recycled high-alumina brick is more than 2.3g/cm3。
Crushing and screening the recycled high-alumina bricks to obtain recycled high-alumina brick particles; the grade ratio of the recycled high-alumina brick particles is 5-12 mm: 1-5 mm: 0.05-1 mm: 5: 5.
The bauxite is bauxite chamotte; crushing and screening the bauxite chamotte to obtain bauxite chamotte particles; the grade ratio of the bauxite chamotte particles is 1-3 mm: 0.05-1 mm: 0.05-0.1 mm: 2: 1.
The grading ratio of the cobblestones is 5-12 mm: 1-5 mm: 0.05-1 mm: 1: 1.
Example 3
The medium-high temperature high-strength heat-resistant concrete comprises the following raw materials:
42 parts of a mixture, 45 parts of high-alumina bauxite, 6 parts of micro silicon powder and 7 parts of aluminate cement; an inorganic salt water reducing agent is additionally added into the concrete, and the inorganic salt water reducing agent accounts for 0.15 percent of the total weight of the concrete; the mixture is a mixture of cobblestones and recycled high-alumina bricks, and the mass ratio of the cobblestones to the recycled high-alumina bricks is 1: 3.
Wherein Al of the high-alumina bricks is recovered2O3The content is more than 65 percent; the volume density of the recycled high-alumina brick is more than 2.3g/cm3。
Crushing and screening the recycled high-alumina bricks to obtain recycled high-alumina brick particles; the grade ratio of the recycled high-alumina brick particles is 5-12 mm: 1-5 mm: 0.05-1 mm: 8:7: 6.
The bauxite is bauxite chamotte; crushing and screening the bauxite chamotte to obtain bauxite chamotte particles; the grade ratio of the bauxite chamotte particles is 1-3 mm: 0.05-1 mm: 0.05-0.1 mm: 2: 1.
The grading ratio of the cobblestones is 5-12 mm: 1-5 mm: 0.05-1 mm: 1: 1.
The results of testing some performance indexes of the products in the above examples are shown in the following table:
the technical solution of the present invention is not limited to the limitations of the above specific embodiments, and all technical modifications made according to the technical solution of the present invention fall within the protection scope of the present invention.
Claims (8)
1. The medium-high temperature high-strength heat-resistant concrete is characterized by comprising the following raw materials: 40-45 parts of a mixture, 42-47 parts of high bauxite, 4-6 parts of micro silicon powder and 7-9 parts of aluminate cement; the concrete is also added with an inorganic salt water reducing agent, and the inorganic salt water reducing agent accounts for 0.15-0.25% of the total weight of the concrete; the mixture is a mixture of cobblestones and recycled high-alumina bricks, and the mass ratio of the cobblestones to the recycled high-alumina bricks is 1: 1-3.
2. The medium-high temperature high strength heat resistant concrete according to claim 1, characterized in that: the concrete comprises the following raw materials in parts by weight: 40 parts of mixed material, 47 parts of high-alumina bauxite, 5 parts of micro silicon powder and 8 parts of aluminate cement; the concrete is also added with an inorganic salt water reducing agent, and the inorganic salt water reducing agent accounts for 0.2 percent of the total weight of the concrete.
3. The medium-high temperature high strength heat resistant concrete according to claim 1 or 2, characterized in that: al of the recycled high-alumina brick2O3The content is more than 65 percent; the volume density of the recycled high-alumina brick is more than 2.3g/cm3。
4. The medium-high temperature high strength heat resistant concrete according to claim 3, characterized in that: crushing and screening the recycled high-alumina bricks to obtain recycled high-alumina brick particles; the particle size distribution of the recycled high-alumina brick particles is 0.05-12 mm.
5. The medium-high temperature high strength heat resistant concrete according to claim 4, wherein: the grade ratio of the recycled high-alumina brick particles is 5-12 mm: 1-5 mm: 0.05-1 mm and 5-8: 5-7: 4-6.
6. The medium-high temperature high strength heat resistant concrete according to claim 3, characterized in that: the bauxite is bauxite chamotte; crushing and screening the bauxite chamotte to obtain bauxite chamotte particles; the grain size distribution of the bauxite chamotte particles is 0.05-3 mm.
7. The medium-high temperature high strength heat resistant concrete according to claim 6, characterized in that: the grade ratio of the bauxite chamotte particles is 1-3 mm: 0.05-1 mm: 0.05-0.1 mm: 2: 1.
8. The medium-high temperature high strength heat resistant concrete according to claim 3, characterized in that: the cobblestone has the grade ratio of 5-12 mm to 1-5 mm to 0.05-1 mm to 1:1: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110538504.9A CN113402238A (en) | 2021-05-18 | 2021-05-18 | Medium-high temperature high-strength heat-resistant concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110538504.9A CN113402238A (en) | 2021-05-18 | 2021-05-18 | Medium-high temperature high-strength heat-resistant concrete |
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| Publication Number | Publication Date |
|---|---|
| CN113402238A true CN113402238A (en) | 2021-09-17 |
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| CN202110538504.9A Pending CN113402238A (en) | 2021-05-18 | 2021-05-18 | Medium-high temperature high-strength heat-resistant concrete |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115010447A (en) * | 2022-06-16 | 2022-09-06 | 江苏蓝圈新材料股份有限公司 | High-strength antibacterial self-leveling mortar and preparation method thereof |
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2021
- 2021-05-18 CN CN202110538504.9A patent/CN113402238A/en active Pending
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|---|---|---|---|---|
| RU2190581C1 (en) * | 2001-07-12 | 2002-10-10 | Закрытое акционерное общество "Союзтеплострой" | Method of heat-resistant concrete producing |
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| CN109650828A (en) * | 2019-01-01 | 2019-04-19 | 中国人民解放军63653部队 | A kind of high temperature resistant low yield gas concrete |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115010447A (en) * | 2022-06-16 | 2022-09-06 | 江苏蓝圈新材料股份有限公司 | High-strength antibacterial self-leveling mortar and preparation method thereof |
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Application publication date: 20210917 |