CN116675485A - Heat-resistant concrete and preparation method thereof - Google Patents
Heat-resistant concrete and preparation method thereof Download PDFInfo
- Publication number
- CN116675485A CN116675485A CN202310522746.8A CN202310522746A CN116675485A CN 116675485 A CN116675485 A CN 116675485A CN 202310522746 A CN202310522746 A CN 202310522746A CN 116675485 A CN116675485 A CN 116675485A
- Authority
- CN
- China
- Prior art keywords
- parts
- concrete
- heat
- polyphosphazene
- component
- Prior art date
- 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.)
- Pending
Links
- 239000004567 concrete Substances 0.000 title claims abstract description 53
- 238000002360 preparation method Methods 0.000 title abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 229920002627 poly(phosphazenes) Polymers 0.000 claims abstract description 40
- 239000004568 cement Substances 0.000 claims abstract description 20
- 229920005646 polycarboxylate Polymers 0.000 claims abstract description 19
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 17
- 239000006185 dispersion Substances 0.000 claims abstract description 16
- 238000005728 strengthening Methods 0.000 claims abstract description 11
- 230000002708 enhancing effect Effects 0.000 claims abstract description 9
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 9
- 239000011707 mineral Substances 0.000 claims abstract description 9
- 229920001479 Hydroxyethyl methyl cellulose Polymers 0.000 claims abstract description 5
- ZDIRKWICVFDSNX-UHFFFAOYSA-N diethyl phosphate 1-ethyl-3-methyl-1,2-dihydroimidazol-1-ium Chemical compound P(=O)(OCC)(OCC)O.C(C)N1CN(C=C1)C ZDIRKWICVFDSNX-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 239000011259 mixed solution Substances 0.000 claims abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 19
- 238000003756 stirring Methods 0.000 claims description 16
- 239000010881 fly ash Substances 0.000 claims description 14
- 239000000843 powder Substances 0.000 claims description 14
- 239000004576 sand Substances 0.000 claims description 14
- 239000004575 stone Substances 0.000 claims description 14
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 239000002893 slag Substances 0.000 claims description 12
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 11
- 229910052698 phosphorus Inorganic materials 0.000 claims description 11
- 239000011574 phosphorus Substances 0.000 claims description 11
- 239000002994 raw material Substances 0.000 claims description 8
- 235000019738 Limestone Nutrition 0.000 claims description 6
- 239000006028 limestone Substances 0.000 claims description 6
- 229910021487 silica fume Inorganic materials 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 2
- 230000000052 comparative effect Effects 0.000 description 11
- 238000002156 mixing Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 239000002608 ionic liquid Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 150000004645 aluminates Chemical class 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 239000008030 superplasticizer Substances 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 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
- 238000004891 communication Methods 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 125000004437 phosphorous atom Chemical group 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005594 polymer fiber Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000003469 silicate cement Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910000500 β-quartz Inorganic materials 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/2084—Thermal shock resistance
-
- 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 heat-resistant concrete and a preparation method thereof, wherein the heat-resistant concrete comprises the following components in parts by weight: 200-300 parts of cement, 50-200 parts of mineral admixture, 800-1200 parts of fine aggregate, 800-1200 parts of coarse aggregate, 140-180 parts of water, 5-15 parts of polycarboxylate water reducer and 5-30 parts of heat resistance enhancing component. The heat resistance enhancing component is a mixture of polyphosphazene microtubes and polyphosphazene microtube dispersion enhancing components according to a weight ratio of 1:100. The polyphosphazene micron tube has a tube diameter of 5-15 microns, an aspect ratio of 20-40 and a wall thickness of 50-200 nanometers. The polyphosphazene microtube dispersion strengthening component is a mixed solution of 1-ethyl-3-methylimidazole diethyl phosphate salt and methyl hydroxyethyl cellulose, and the weight components of the two are 20:1. The heat-resistant concrete has heat-resistant temperature reaching 600 ℃ and excellent performances.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to heat-resistant concrete and a preparation method thereof.
Background
With industrial development and technical progress, special concrete has been increasingly applied to practical engineering, wherein heat-resistant concrete is a special concrete which can be used for a long time at 200-900 ℃ and can maintain mechanical properties and volume stability, and is mainly applied to metallurgical engineering foundation parts and chimney linings. After the common concrete is hardened, a compact whole formed by hydration products and aggregate is formed, and certain micro-nano pores and moisture are also formed in the common concrete. When the concrete is heated to 200 ℃, the cement hydration product starts to dehydrate, the concrete contracts, cracks start to appear, and the strength is slightly increased and then reduced; the temperature reaches 500 ℃, the strong calcium oxide begins to dehydrate, and the cement tissue begins to be destroyed; the temperature reaches 573 ℃, the quartz crystal in the aggregate can be converted into a beta quartz crystal form, and the volume of the quartz crystal is expanded; after 600 ℃, calcium carbonate in the aggregate starts to undergo decomposition reaction, and the concrete structure is further destroyed; at 800 ℃, the hydrated calcium silicate loses the binding capacity; at 900 ℃, calcium carbonate in the aggregate is completely decomposed, the concrete structure is destroyed, and the strength is lost.
In the prior art, aluminate cement and refractory high-alumina aggregate are generally used for preparing heat-resistant concrete, but the aluminate cement has short setting time and quick working loss; the refractory high-alumina aggregate has high porosity and high water absorption, further reduces the workability of concrete, is not suitable for mass application and pumping operation, and has a plurality of problems in practical use.
Disclosure of Invention
The invention aims to provide heat-resistant concrete with heat-resistant temperature up to 600 ℃ and excellent performances, which mainly improves the expansion resistance of the concrete when heated by doping heat-resistant reinforcing components, reduces cracks, improves the quality stability and the strength stability and increases the heat resistance of the concrete.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the heat-resistant concrete comprises the following components in parts by weight: 200-300 parts of Portland cement, 50-200 parts of mineral admixture, 800-1200 parts of fine aggregate, 800-1200 parts of coarse aggregate, 140-180 parts of water, 5-15 parts of polycarboxylate water reducer and 5-30 parts of heat resistance enhancing component.
Preferably, the mineral admixture is one or a combination of a plurality of fly ash, silica fume, phosphorus slag powder and blast furnace slag powder.
Preferably, the fine aggregate is machine-made sand, and the lithology is limestone.
Preferably, the coarse aggregate is crushed stone and the lithology is limestone.
Preferably, the heat resistance enhancing component is a mixture of polyphosphazene microtubes and polyphosphazene microtube dispersion enhancing components according to a weight ratio of 1:100.
Preferably, the pipe diameter of the polyphosphazene micron pipe is 5-15 microns, the length-diameter ratio is 20-40, and the wall thickness is 50-200 nanometers.
Preferably, the polyphosphazene microtube dispersion strengthening component is a mixed solution of 1-ethyl-3-methylimidazole diethyl phosphate and methyl hydroxyethyl cellulose according to the weight ratio of 20:1.
The preparation method of the concrete is characterized in that,
the preparation method of the heat-resistant reinforcing component comprises the following steps: weighing 1-ethyl-3-methylimidazole diethyl phosphate, adding methyl hydroxyethyl cellulose, heating to 100 ℃, continuing for 1-3 hours until the cellulose is partially dissolved but not completely dissolved, preparing a polyphosphazene micron tube reinforced dispersion component, and adding polyphosphazene micron tubes for mixing.
Weighing the following raw materials in weight: cement, mineral admixture, fine aggregate, coarse aggregate, water and polycarboxylate water reducer are uniformly mixed, the polycarboxylate water reducer and 3/4 water are added for stirring, then heat-resistant reinforcing component and 1/4 water are added, and finally the fine aggregate and the coarse aggregate are added for uniformly stirring, so that the heat-resistant concrete is obtained.
After the concrete is acted at high temperature, firstly, chemical substances in the concrete are decomposed, and the bonding capacity is lost; secondly, the aggregate is damaged by thermal deformation; thirdly, the internal moisture is heated to generate huge steam pressure, so that the expansion fracture is damaged. At 600 ℃, the heat resistant concrete using limestone aggregate suffers from expansion stress mainly from the inside. The common silicate cement and limestone aggregate are adopted to prepare heat-resistant concrete at 600 ℃, so that good working performance and pumping performance are maintained, the use of aggregate with high silica content is avoided, and the aggregate stability of the concrete is ensured; the heat resistance of the concrete is enhanced by adding the polyphosphazene microtubes, and finally the concrete with good heat resistance can be obtained.
Polyphosphazene is a novel organic/inorganic hybrid polymer having alternately arranged phosphorus and nitrogen atoms as a main chain, and two organic side groups are usually connected to the phosphorus atoms through chemical bonds. The self thermal stability is good, the high temperature is not easy to decompose, and the strength is high. The polyphosphazene microtube dispersion strengthening component is a composite product of polymer fiber and ionic liquid, and the ionic liquid is a substance which is liquid at the temperature near room temperature and consists of ions, has stable property and is environment-friendly. Cellulose is dissolved into fragments in ionic liquid, then the fragments can form a composite structure with a side chain together with the polyphosphazene microtube, and the polyphosphazene microtube with the side chain structure is not easy to agglomerate and has good stability. The polyphosphazene micro-tubes are dispersed in the concrete and serve as filling components, so that the compactness of the concrete can be improved; the hollow structure of the polyphosphazene micro-tube can be connected with micro-nano air holes, and after the polyphosphazene micro-tube is heated at high temperature, a release channel for water expansion is provided, so that the anti-cracking performance of the concrete is improved.
In summary, compared with the prior art, the invention has the following beneficial effects:
the polyphosphazene micro-tube is easy to agglomerate in water, the independent addition dispersibility in concrete is poor, the polyphosphazene micro-tube has better dispersibility through the dispersion strengthening component of the polyphosphazene micro-tube, can be uniformly dispersed in the concrete, and the structure of the polyphosphazene micro-tube is not easy to be damaged;
the polyphosphazene micro-tube doped in the invention is of a hollow structure, is connected with the micro-holes in the concrete through the hollow pipeline, forms a water-air expansion release channel after being heated at high temperature, balances the vapor pressures of water in different holes, and can enhance the bonding performance of slurry in micron size to cooperatively enhance the high-temperature anti-expansion performance of the concrete.
Detailed Description
The technical solution of the present invention is described in further detail below by way of examples, which are illustrative rather than limiting.
Example 1
The weight portions of the raw materials are as follows: 200 parts of P.O 52.5 cement, 40 parts of phosphorus slag powder, 60 parts of fly ash, 1050 parts of machine-made sand, 900 parts of crushed stone, 155 parts of water, 7 parts of polycarboxylate water reducer and 10 parts of heat-resistant reinforcing component. Mixing cement, phosphorus slag powder and fly ash uniformly, adding a polycarboxylate water reducer and 3/4 water, stirring, adding a heat-resistant reinforcing component and 1/4 water, and finally adding machine-made sand and broken stone, and stirring uniformly to obtain the heat-resistant concrete.
Example 2
The weight portions of the raw materials are as follows: 240 parts of P.O 52.5 cement, 40 parts of mineral powder, 60 parts of fly ash, 1000 parts of machine-made sand, 900 parts of crushed stone, 160 parts of water, 10 parts of polycarboxylate superplasticizer and 15 parts of heat-resistant reinforcing component. Mixing cement, mineral powder and fly ash uniformly, adding a polycarboxylate water reducer and 3/4 water, stirring, adding a heat-resistant reinforcing component and 1/4 water, and finally adding machine-made sand and broken stone, and stirring uniformly to obtain the heat-resistant concrete.
Example 3
The weight portions of the raw materials are as follows: 300 parts of P.O 52.5 cement, 40 parts of silica fume, 60 parts of fly ash, 900 parts of machine-made sand, 1000 parts of crushed stone, 165 parts of water, 12 parts of polycarboxylate water reducer and 20 parts of heat-resistant reinforcing component. Mixing cement, silica fume and fly ash uniformly, adding a polycarboxylate water reducer and 3/4 water, stirring, adding a heat-resistant reinforcing component and 1/4 water, and finally adding machine-made sand and broken stone, and stirring uniformly to obtain the heat-resistant concrete.
Comparative example 1
The weight portions of the raw materials are as follows: 200 parts of P.O 52.5 cement, 40 parts of phosphorus slag powder, 60 parts of fly ash, 1050 parts of machine-made sand, 900 parts of broken stone, 155 parts of water and 7 parts of polycarboxylate superplasticizer. Mixing cement, phosphorus slag powder and fly ash uniformly, adding a polycarboxylate water reducer and 3/4 water, stirring, adding 1/4 water, and finally adding machine-made sand and broken stone, and stirring uniformly to obtain the final product.
Comparative example 2
The weight portions of the raw materials are as follows: 200 parts of P.O 52.5 cement, 40 parts of phosphorus slag powder, 60 parts of fly ash, 1050 parts of machine-made sand, 900 parts of crushed stone, 155 parts of water, 7 parts of polycarboxylate water reducer and 10 parts of polyphosphazene micrometer pipe. Mixing cement, phosphorus slag powder and fly ash uniformly, adding a polycarboxylate water reducer and 3/4 water, stirring, adding a polyphosphazene micron tube and 1/4 water, and finally adding machine-made sand and broken stone, and stirring uniformly to obtain the modified asphalt.
Comparative example 3
The weight portions of the raw materials are as follows: 200 parts of P.O 52.5 cement, 40 parts of phosphorus slag powder, 60 parts of fly ash, 1050 parts of machine-made sand, 900 parts of crushed stone, 155 parts of water, 7 parts of polycarboxylate water reducer and 10 parts of polyphosphazene microtube dispersion strengthening component. Mixing cement, phosphorus slag powder and fly ash uniformly, adding a polycarboxylate water reducer and 3/4 water, stirring, adding a polyphosphazene micron tube dispersion strengthening component and 1/4 water, and finally adding machine-made sand and broken stone, and stirring uniformly to obtain the modified asphalt.
Examples 1-3 are heat resistant concrete test formulations of three labels of C30, C40 and C50 respectively, and comparative examples 1-3 were tested and compared with example 1 as a control group. The respective properties of examples and comparative examples were tested and the results are shown in table 1 below:
the 600 ℃ heat resistance test is as follows: taking 3 test pieces of each component, carrying out standard curing for 28 days, drying at 110 ℃ for 24 hours, placing in a high-temperature furnace, burning at 600 ℃ for 24 hours, and naturally cooling to room temperature.
TABLE 1 Performance test results Table for examples 1-3 and comparative examples 1-3
As is clear from the above table data, examples 1 to 3 have slump in the range of 200 to 220mm and expansion of 600mm or more, and are excellent in workability as a whole and satisfactory in 28d standard strength. After heat resistance test, the compression strength of examples 1-3 is reduced slightly, the strength loss rate is between 11.0% and 14.8%, and the mass loss rate is between 1.1% and 1.6%. The comparative example 1, in which the heat-resistant reinforcing component was not added, had a strength loss rate of 44.8% and a mass loss rate of 5.3% at the highest. In comparative example 2, polyphosphazene microtubes were added, but the dispersion strengthening dispersion of polyphosphazene microtubes was not added, the dispersibility of polyphosphazene microtubes in concrete was poor, and many of the cohesive and agglomerated microtubes could not fully exert the communication bonding effect, and even became weak phases, resulting in a slightly lower 28d strength. The strength loss rate after the temperature was increased to 28.7% and the mass loss rate was 2.7% in comparative example 2, which slightly decreased the strength loss rate and the mass loss rate as compared with comparative example 1. In comparative example 3, the dispersion strengthening component of the polyphosphazene microtube is added, and the polyphosphazene microtube is not added, so that the strength loss rate and the mass loss rate are both high, and the high-temperature strengthening effect is not found. Therefore, after the concrete is added with the polyphosphazene microtubes and the mixed components of the polyphosphazene microtube dispersion strengthening components, the high temperature resistance is obviously improved, and the concrete shows excellent high temperature resistance in a high temperature resistance test higher than the standard.
The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.
Claims (8)
1. The heat-resistant concrete is characterized by comprising the following components in parts by weight: 200-300 parts of cement, 50-200 parts of mineral admixture, 800-1200 parts of fine aggregate, 800-1200 parts of coarse aggregate, 140-180 parts of water, 5-15 parts of polycarboxylate water reducer and 5-30 parts of heat resistance enhancing component.
2. The concrete of claim 1, wherein the mineral admixture is one or a combination of several of fly ash, silica fume, phosphorus slag powder, blast furnace slag powder.
3. The concrete of claim 1, wherein the fine aggregate is machine-made sand and the lithology is limestone.
4. The concrete of claim 1, wherein the coarse aggregate is crushed stone and the lithology is limestone.
5. The concrete of claim 1, wherein the heat resistance enhancing component is a mixture of polyphosphazene microtubes and polyphosphazene microtube dispersion enhancing component in a weight ratio of 1:100.
6. The concrete of claim 5, wherein the polyphosphazene micron tube has a tube diameter of 5-15 microns, an aspect ratio of 20-40, and a wall thickness of 50-200 nanometers.
7. The concrete of claim 5, wherein the polyphosphazene microtube dispersion strengthening component is a mixed solution of 1-ethyl-3-methylimidazole diethyl phosphate salt and methyl hydroxyethyl cellulose, and the weight ratio of the two components is 20:1.
8. The method for preparing concrete according to any one of claims 1 to 7, wherein the method for preparing the heat-resistant reinforcing component comprises: weighing 1-ethyl-3-methylimidazole diethyl phosphate, adding methyl hydroxyethyl cellulose, heating to 100 ℃ for 1-3 hours to obtain a polyphosphazene micron tube reinforced dispersion component, and adding the polyphosphazene micron tube to mix to obtain a heat-resistant reinforced component;
weighing the following raw materials in weight: cement, mineral admixture, fine aggregate, coarse aggregate, water and polycarboxylate water reducer are uniformly mixed, the polycarboxylate water reducer and 3/4 water are added for stirring, then heat-resistant reinforcing component and 1/4 water are added, and finally the fine aggregate and the coarse aggregate are added for uniformly stirring, so that the heat-resistant concrete is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310522746.8A CN116675485A (en) | 2023-05-10 | 2023-05-10 | Heat-resistant concrete and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310522746.8A CN116675485A (en) | 2023-05-10 | 2023-05-10 | Heat-resistant concrete and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116675485A true CN116675485A (en) | 2023-09-01 |
Family
ID=87784439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310522746.8A Pending CN116675485A (en) | 2023-05-10 | 2023-05-10 | Heat-resistant concrete and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116675485A (en) |
-
2023
- 2023-05-10 CN CN202310522746.8A patent/CN116675485A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110357539B (en) | High-strength heat-resistant concrete and preparation method thereof | |
| CN113213807B (en) | Composite anti-cracking agent for ultra-long large-volume concrete and preparation method thereof | |
| CN109942235B (en) | Normal-temperature curing geopolymer concrete with high strength and high anti-carbonization performance and preparation method thereof | |
| CN110606713A (en) | High-strength light aggregate concrete and preparation process thereof | |
| CN107382346B (en) | refractory wear-resistant pouring material and preparation method thereof | |
| CN112608104A (en) | Light high-strength anti-cracking self-repairing tuff concrete and preparation method thereof | |
| CN105016671A (en) | Superfluid self-compacting concrete and preparing method thereof | |
| CN114751705B (en) | High-performance self-compacting concrete and preparation method thereof | |
| CN110698088B (en) | Retarded portland cement and preparation method thereof | |
| CN108585677A (en) | A kind of strong basalt fibre composite concrete of superelevation and preparation method thereof | |
| CN111533506A (en) | Anti-crack waterproof thermal insulation polymer mortar | |
| CN115057667B (en) | Self-compacting concrete and production process thereof | |
| WO2011122746A1 (en) | Lightweight foamed concrete using a raw material for high-strength concrete, and method for manufacturing same | |
| CN110845188A (en) | Sand-free macroporous concrete and preparation method thereof | |
| CN116675485A (en) | Heat-resistant concrete and preparation method thereof | |
| CN114477873B (en) | Recycled aggregate self-compacting concrete and preparation method thereof | |
| KR20200134566A (en) | Light Weight And Heat Insulation Mortar Composition Based on Industrial By-products | |
| CN116535173B (en) | High-temperature-resistant concrete and preparation method thereof | |
| CN109400071B (en) | C40 heat-resistant concrete easy to pump and preparation method thereof | |
| CN113788652A (en) | High-fluidity light high-strength concrete and preparation method thereof | |
| CN114956712B (en) | LC40 full-light pumping ceramsite concrete and preparation method thereof | |
| CN115784690B (en) | High-temperature-resistant EPS concrete material for improving 3D printing anisotropy and preparation method thereof | |
| CN116553897B (en) | Foam concrete and preparation method thereof | |
| CN116514431B (en) | Anti-cracking and anti-permeability agent for concrete and preparation method thereof | |
| CN115893880B (en) | Low-carbon gel material and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |