CN113185237A - Nano-enhanced phase-change antifreezing concrete mixture and preparation method thereof - Google Patents
Nano-enhanced phase-change antifreezing concrete mixture and preparation method thereof Download PDFInfo
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- CN113185237A CN113185237A CN202110648285.XA CN202110648285A CN113185237A CN 113185237 A CN113185237 A CN 113185237A CN 202110648285 A CN202110648285 A CN 202110648285A CN 113185237 A CN113185237 A CN 113185237A
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- 239000000203 mixture Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000012782 phase change material Substances 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 230000002528 anti-freeze Effects 0.000 claims abstract description 27
- 239000002086 nanomaterial Substances 0.000 claims abstract description 24
- 239000004576 sand Substances 0.000 claims abstract description 20
- 239000004568 cement Substances 0.000 claims abstract description 19
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 17
- 239000010881 fly ash Substances 0.000 claims abstract description 17
- 239000004575 stone Substances 0.000 claims abstract description 17
- 230000008859 change Effects 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 25
- BGHCVCJVXZWKCC-UHFFFAOYSA-N tetradecane Chemical compound CCCCCCCCCCCCCC BGHCVCJVXZWKCC-UHFFFAOYSA-N 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 239000003094 microcapsule Substances 0.000 claims description 10
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 6
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 6
- 239000011398 Portland cement Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 239000002775 capsule Substances 0.000 claims description 3
- 239000011162 core material Substances 0.000 claims description 3
- 239000000178 monomer Substances 0.000 claims description 3
- 239000005543 nano-size silicon particle Substances 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- 230000000052 comparative effect Effects 0.000 description 9
- 238000007710 freezing Methods 0.000 description 8
- 239000011148 porous material Substances 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 206010003549 asthenia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012956 testing procedure Methods 0.000 description 1
Classifications
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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
- 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
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
-
- 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
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
A nano reinforced phase change antifreeze concrete mixture and a preparation method thereof comprise the following raw materials in parts by weight: 365 parts of cement, 1031 parts of broken stone, 732.5-735.5 parts of sand, 165 parts of water, 75 parts of fly ash, 8 parts of water reducing agent, 36.5 parts of phase change material and 4-7 parts of nano material; the preparation method comprises the steps of uniformly mixing the raw materials to obtain a nano reinforced phase-change antifreeze concrete mixture; according to the invention, through the matching of the phase-change material and the nano material, the thermal property of the concrete is improved, the freeze-thaw resistance of the concrete is improved, and the strength required by an engineering structure of the concrete is ensured.
Description
Technical Field
The invention relates to the technical field of concrete, in particular to a nano reinforced phase change antifreezing concrete mixture and a preparation method thereof.
Background
In cold regions, the freeze-thaw action is one of the main factors causing the concrete damage, so the freeze-thaw resistance of the concrete becomes an important index for the durability of the concrete in cold regions, and also becomes important in the research work of the durability of the concrete.
The traditional method for improving the freeze-thaw resistance of concrete comprises the steps of adding an air entraining agent into a cement base material, using a mineral admixture, improving external conditions, controlling construction quality and the like, in addition, adding fibers to inhibit frost cracking, and adopting means such as deicing salt for preventing road icing.
The phase change material is an optimal green environment-friendly carrier with energy conservation and environmental protection, and can absorb or release a large amount of latent heat by changing the state of the material. The phase-change material is added into the concrete as an admixture to adjust the temperature and control the temperature of the concrete, so that the thermal property of the concrete is changed, and meanwhile, the concrete antifreezing property is better. However, the existing adding technology greatly reduces the strength of concrete while improving the frost resistance of the concrete, and can not ensure the safety of engineering structures. Therefore, how to ensure the concrete strength required by an engineering structure while improving the freeze-thaw resistance of the concrete by using the phase change material is a problem which needs to be solved urgently.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a nano reinforced phase-change antifreeze concrete mixture and a preparation method thereof, which improve the thermal property of concrete, improve the freeze-thaw resistance of concrete and simultaneously ensure that the concrete has the strength required by an engineering structure through the matching of a phase-change material and a nano material.
In order to achieve the purpose, the invention adopts the technical scheme that:
a nano-reinforced phase-change antifreeze concrete mixture comprises the following raw materials in parts by weight: 365 parts of cement, 1031 parts of broken stone, 732.5-735.5 parts of sand, 165 parts of water, 75 parts of fly ash, 8 parts of water reducing agent, 36.5 parts of phase change material and 4-7 parts of nano material.
The phase change material is a microcapsule phase change material, a PMMA material is used as a micron-sized capsule shell, and normal tetradecane is used as a core material; wherein the purity of the normal tetradecane is 98 percent, and the latent heat is 200 kJ/kg; the mass ratio of PMMA to normal tetradecane is 2: 8; the particle size range of the microcapsule phase change material after molding is 5-10 μm, and the phase change temperature is about 5 ℃.
The nano material is hydrophilic nano silicon dioxide particles with the particle size of 30 nm.
The cement is ordinary portland cement.
The fly ash is F-class II-grade fly ash.
The water reducing agent is a polycarboxylic acid high-efficiency monomer water reducing agent.
The sand is the sand in the area II, and the apparent density is 2630kg/m3。
The crushed stone is in 5-25mm continuous gradation, and the apparent density of the crushed stone is 2835kg/m3Having a bulk density of 1720kg/m3。
A preparation method of a nano reinforced phase-change antifreeze concrete mixture comprises the following steps:
and uniformly mixing 365 parts of cement, 1031 parts of broken stone, 732.5-735.5 parts of sand, 165 parts of water, 75 parts of fly ash, 8 parts of water reducing agent, 36.5 parts of phase change material and 4-7 parts of nano material to obtain the nano reinforced phase change antifreeze concrete mixture.
According to the invention, by utilizing the characteristics of high-temperature heat absorption and low-temperature heat release of the phase-change material, the occurrence of the lowest temperature and the highest temperature in the concrete is delayed or reduced in the freeze-thaw cycle process of the concrete, so that the expansion stress generated by volume change tends to be stable when the forms of water and ice in the concrete pores are converted; under the condition, the damage of the freeze-thaw cycle to the interior of the concrete is greatly reduced, and only slight denudation is generated on the surface, so that the durability of the concrete is improved; by utilizing the characteristics of high-temperature heat absorption and low-temperature heat release of the microcapsule phase change material, energy waste of buildings in cold regions can be reduced, and living comfort is improved; by adding the nano material, the interface structure between the high-efficiency anti-freezing concrete aggregate and the cement and the pore structure of the set cement can be improved, and the nano material can fill the gap between the aggregate and the cement for the compact structure of the concrete, so that the concrete is harder.
Compared with the prior art, the invention has the following beneficial effects:
1. the nanometer reinforced phase-change antifreeze concrete disclosed by the invention has the advantages that the mechanical property of the concrete is also ensured while the antifreeze property and the thermal property of the concrete are improved;
2. the microcapsule phase change material used in the invention is an energy-saving and environment-friendly green material, the phase change point is lower, the latent heat quantity is large, the thermal property is good, and the phase change material enables the phase change latent heat or heat release in a way of material form change;
3. the invention utilizes the characteristics of high-temperature heat absorption and low-temperature heat release of the phase-change material, reduces the waste of energy sources in residential areas in cold regions, and increases the living comfort;
4. the nanometer reinforced phase-change antifreezing concrete overcomes the problems of leakage of the phase-change material in the concrete and reduction of the material performance along with increase of the freezing and thawing times;
5. the nanometer reinforced phase-change anti-freezing concrete is doped with the nanometer material, so that the problem of strength reduction of the concrete doped with the phase-change material is solved;
6. the nano-reinforced phase-change antifreezing concrete mixture is realized based on the conditions of a common concrete production process, is simple and convenient in material obtaining, and has better social and economic benefits.
Detailed Description
The present invention will be described in further detail with reference to examples.
Example 1: a nano-reinforced phase-change antifreeze concrete mixture comprises the following raw materials in parts by weight: 365 parts of cement, 1031 parts of broken stone, 735.5 parts of sand, 165 parts of water, 75 parts of fly ash, 8 parts of water reducing agent, 36.5 parts of phase change material and 4 parts of nano material.
The cement is selected from P.O 42.5 ordinary Portland cement with stable quality and performance, and cement performance indexes (including fineness, MgO content and SO)3The content, the initial setting time, the final setting time, the 3-day compressive strength and the 28-day compressive strength) all accord with the national standard.
The sand is used as aggregate, medium sand with smooth particles, good gradation and hard texture is adopted, the quality of the sand meets the specification, and the apparent density is 2630kg/m3The fineness modulus ranges from 2.5 to 3.0.
The crushed stone is limestone which is compact, hard, high in strength, rough in surface, few in needle sheet shape and good in gradation, the gradation selection range is 5-25mm, and the apparent density of the crushed stone is 2835kg/m3Having a bulk density of 1720kg/m3Without the incorporation of weathering particles, containingThe mud amount, the needle shape degree and the like all conform to the national regulation.
The fly ash is F-class II fly ash.
The water reducing agent is a polycarboxylic acid high-efficiency monomer water reducing agent, is dissolved in water before use, and is mixed.
The phase change material is a microcapsule phase change material which takes PMMA as a capsule shell and normal tetradecane as a core material; wherein the purity of the normal tetradecane is 98 percent, and the latent heat is 200 kJ/kg; the mass ratio of PMMA to normal tetradecane is 2: 8; the particle size range of the formed microcapsule phase change material is 5-10 mu m, and the phase change temperature is about 5 ℃; the problem of material performance reduction caused by leakage of the phase-change material in concrete along with increase of the freezing and thawing times and the problem of strength reduction of concrete doped with the phase-change material are solved.
The nano material is hydrophilic nano silicon dioxide with the particle size of 30nm, is fully and uniformly stirred with water before being used, and is added into concrete; the particle sizes of the nano material and the microcapsule phase change material are very small, and the microcapsule phase change material can be well filled in the pores of concrete, so that the pores in the concrete are greatly reduced, the moisture in the concrete is indirectly reduced, and the frost resistance and the strength of the concrete are enhanced.
The quality of the tap water for water separation meets the standard of concrete mixing water.
A preparation method of a nano reinforced phase-change antifreeze concrete mixture comprises the following steps:
365 parts of cement, 1031 parts of broken stone, 735.5 parts of sand, 165 parts of water, 75 parts of fly ash, 8 parts of water reducing agent, 36.5 parts of phase change material and 4 parts of nano material are uniformly mixed to obtain the nano reinforced phase change antifreeze concrete mixture.
Example 2: a nano-reinforced phase-change antifreeze concrete mixture comprises the following raw materials in parts by weight: 365 parts of cement, 1031 parts of broken stone, 734.5 parts of sand, 165 parts of water, 75 parts of fly ash, 8 parts of water reducing agent, 36.5 parts of phase change material and 5 parts of nano material; the starting materials were the same as in example 1.
A preparation method of a nano reinforced phase-change antifreeze concrete mixture comprises the following steps:
365 parts of cement, 1031 parts of broken stone, 734.5 parts of sand, 165 parts of water, 75 parts of fly ash, 8 parts of water reducing agent, 36.5 parts of phase change material and 5 parts of nano material are uniformly mixed to obtain the nano reinforced phase change antifreeze concrete mixture.
Example 3: a nano-reinforced phase-change antifreeze concrete mixture comprises the following raw materials in parts by weight: 365 parts of cement, 1031 parts of broken stone, 732.5 parts of sand, 165 parts of water, 75 parts of fly ash, 8 parts of water reducing agent, 36.5 parts of phase change material and 7 parts of nano material; the starting materials were the same as in example 1.
A preparation method of a nano reinforced phase-change antifreeze concrete mixture comprises the following steps:
365 parts of cement, 1031 parts of broken stone, 732.5 parts of sand, 165 parts of water, 75 parts of fly ash, 8 parts of water reducing agent, 36.5 parts of phase change material and 7 parts of nano material are uniformly mixed to obtain the nano reinforced phase change antifreeze concrete mixture.
Comparative example 1: comparative example 1 is different from example 1 in that the phase change material and the nanomaterial are not added to the raw materials, and 776 parts of sand is the same as the other raw materials in parts by weight.
Comparative example 2: comparative example 2 is different from example 1 in that the nanomaterial was not added to the raw material, 739.5 parts of sand, and the other raw materials were the same in parts by weight.
Performance test the performance of the concrete mixtures prepared in examples 1 to 3 and comparative examples 1 to 2 was tested in the following manner, and the test results are shown in Table 1.
The freezing resistance performance is as follows: the frost resistance rating was determined according to the regulations in SL191-2008 "design Specification for Hydraulic concrete structures".
Compressive strength: and (3) manufacturing a standard test block according to GB/T50081-2019 'test method standard for physical and mechanical properties of concrete', and measuring the compressive strength of the standard test block after being maintained for 28 days.
Thermal properties: and respectively measuring the thermal conductivity coefficient, the thermal conductivity coefficient and the specific heat capacity of 7d and 14d and the adiabatic temperature rise of 14d and 28d according to DL/T5150-2017 'testing procedure for hydraulic concrete'.
TABLE 1
F300 shows that the concrete can bear 300 times of repeated freeze-thaw cycles, and as can be seen from Table 1, the nano reinforced phase-change anti-freezing concrete prepared by the technology effectively improves the anti-freezing performance and the thermal performance of the concrete on the premise of ensuring the basic strength of the nano reinforced phase-change anti-freezing concrete.
The phase change material and the nano material are not added in the raw materials of the comparative example 1; compared with examples 1-3, the frost resistance grade of the concrete in the comparative example 1 is obviously reduced, which shows that the addition of the phase-change material can greatly improve the freeze-thaw resistance of the concrete.
The raw material of comparative example 2 was not added with nanomaterial; compared with examples 1-3, the strength of the concrete in comparative example 2 is lower, which shows that the strength loss of the concrete caused by the addition of the phase-change material can be improved by the addition of the nano material.
Claims (9)
1. The nanometer reinforced phase-change antifreeze concrete mixture is characterized by comprising the following raw materials in parts by weight: 365 parts of cement, 1031 parts of broken stone, 732.5-735.5 parts of sand, 165 parts of water, 75 parts of fly ash, 8 parts of water reducing agent, 36.5 parts of phase change material and 4-7 parts of nano material.
2. The nano-reinforced phase-change antifreeze concrete mixture as claimed in claim 1, wherein: the phase change material is a microcapsule phase change material, a PMMA material is used as a micron-sized capsule shell, and normal tetradecane is used as a core material; wherein the purity of the normal tetradecane is 98 percent, and the latent heat is 200 kJ/kg; the mass ratio of PMMA to normal tetradecane is 2: 8; the particle size range of the microcapsule phase change material after molding is 5-10 mu m, and the phase change temperature is 5 ℃.
3. The nano-reinforced phase-change antifreeze concrete mixture as claimed in claim 1, wherein: the nano material is hydrophilic nano silicon dioxide particles with the particle size of 30 nm.
4. The nano-reinforced phase-change antifreeze concrete mixture as claimed in claim 1, wherein: the cement is ordinary portland cement.
5. The nano-reinforced phase-change antifreeze concrete mixture as claimed in claim 1, wherein: the fly ash is F-class II-grade fly ash.
6. The nano-reinforced phase-change antifreeze concrete mixture as claimed in claim 1, wherein: the water reducing agent is a polycarboxylic acid high-efficiency monomer water reducing agent.
7. The nano-reinforced phase-change antifreeze concrete mixture as claimed in claim 1, wherein: the sand is the sand in the area II, and the apparent density is 2630kg/m3。
8. The nano-reinforced phase-change antifreeze concrete mixture as claimed in claim 1, wherein: the crushed stone is in 5-25mm continuous gradation, and the apparent density of the crushed stone is 2835kg/m3Having a bulk density of 1720kg/m3。
9. A preparation method of a nano reinforced phase-change antifreeze concrete mixture is characterized by comprising the following steps:
and uniformly mixing 365 parts of cement, 1031 parts of broken stone, 732.5-735.5 parts of sand, 165 parts of water, 75 parts of fly ash, 8 parts of water reducing agent, 36.5 parts of phase change material and 4-7 parts of nano material to obtain the nano reinforced phase change antifreeze concrete mixture.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113620673A (en) * | 2021-09-10 | 2021-11-09 | 北华大学 | Oil shale ash anti-freezing masonry and preparation method thereof |
| CN115784684A (en) * | 2022-11-17 | 2023-03-14 | 新乡学院 | Silanized rubber/nano SiO 2 Composite antifreezing concrete and preparation method thereof |
| CN115819030A (en) * | 2022-09-22 | 2023-03-21 | 内蒙古电力(集团)有限责任公司巴彦淖尔供电分公司 | Anti-frost-expansion corrosion-resistant low-temperature phase-change heat storage concrete and preparation method and application thereof |
| CN117973094A (en) * | 2024-03-29 | 2024-05-03 | 中交第一公路勘察设计研究院有限公司 | Phase-change coarse aggregate mixing amount calculating method, manufacturing method and temperature-regulating pavement |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10019931C1 (en) * | 2000-04-20 | 2001-11-08 | Fraunhofer Ges Forschung | Active thermal structural element has hypocaust element, inner duct structure for heating or cooling medium, phase change material |
| CN104650816A (en) * | 2015-02-06 | 2015-05-27 | 桂林电子科技大学 | Low-temperature phase-change energy storage microcapsule and preparation method thereof |
| CN108484024A (en) * | 2018-03-09 | 2018-09-04 | 湖北工业大学 | A kind of preparation method of the early strong frost-resistant concrete of the micro-nano heat accumulation capsule of addition |
-
2021
- 2021-06-10 CN CN202110648285.XA patent/CN113185237A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10019931C1 (en) * | 2000-04-20 | 2001-11-08 | Fraunhofer Ges Forschung | Active thermal structural element has hypocaust element, inner duct structure for heating or cooling medium, phase change material |
| CN104650816A (en) * | 2015-02-06 | 2015-05-27 | 桂林电子科技大学 | Low-temperature phase-change energy storage microcapsule and preparation method thereof |
| CN108484024A (en) * | 2018-03-09 | 2018-09-04 | 湖北工业大学 | A kind of preparation method of the early strong frost-resistant concrete of the micro-nano heat accumulation capsule of addition |
Non-Patent Citations (1)
| Title |
|---|
| 马卫卫: ""mPCMs改性水泥基复合材料的抗冻性能研究"", 《中国优秀硕士学位论文全文数据库（电子期刊） 工程科技I辑》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113620673A (en) * | 2021-09-10 | 2021-11-09 | 北华大学 | Oil shale ash anti-freezing masonry and preparation method thereof |
| CN115819030A (en) * | 2022-09-22 | 2023-03-21 | 内蒙古电力(集团)有限责任公司巴彦淖尔供电分公司 | Anti-frost-expansion corrosion-resistant low-temperature phase-change heat storage concrete and preparation method and application thereof |
| CN115819030B (en) * | 2022-09-22 | 2024-01-12 | 内蒙古电力(集团)有限责任公司巴彦淖尔供电分公司 | Anti-frost-heaving corrosion-resistant low-temperature phase-change heat storage concrete, and preparation method and application thereof |
| CN115784684A (en) * | 2022-11-17 | 2023-03-14 | 新乡学院 | Silanized rubber/nano SiO 2 Composite antifreezing concrete and preparation method thereof |
| CN117973094A (en) * | 2024-03-29 | 2024-05-03 | 中交第一公路勘察设计研究院有限公司 | Phase-change coarse aggregate mixing amount calculating method, manufacturing method and temperature-regulating pavement |
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