CN113943138A - Preparation method of freeze-thaw resistant circulating concrete - Google Patents
Preparation method of freeze-thaw resistant circulating concrete Download PDFInfo
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- CN113943138A CN113943138A CN202111488543.9A CN202111488543A CN113943138A CN 113943138 A CN113943138 A CN 113943138A CN 202111488543 A CN202111488543 A CN 202111488543A CN 113943138 A CN113943138 A CN 113943138A
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- concrete
- freeze
- thaw
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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
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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
- 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
- C04B14/022—Carbon
- C04B14/024—Graphite
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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
- 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
- C04B14/04—Silica-rich materials; Silicates
- C04B14/048—Granite
-
- 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
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/146—Silica fume
-
- 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
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- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a preparation method of freeze-thaw resistant circulating concrete, which comprises the steps of preparing the freeze-thaw resistant circulating concrete by using ordinary portland cement, fly ash, granite stone powder, silica fume, graphene sheets, fine aggregates, coarse aggregates, an air entraining agent and water according to a ratio; through the preparation of the base material, the air entraining agent and the graphene sheet are added, then the mixture is stirred with water according to the proportion, the silica fume and the granite stone powder can be effectively fused with the water to fill the gap, and finally the engineering graphene sheet is added, so that the concrete with the freezing and thawing cycle resistant effect improved by more than 40 percent can be obtained, and the freezing and thawing cycle resistant function and the using effect of the concrete are enhanced.
Description
Technical Field
The invention discloses the technical field of concrete, in particular to a preparation method of freeze-thaw resistant circulating concrete.
Background
The concrete facilities in the cold areas are easy to generate freeze-thaw damage resistance and crushing damage resistance due to long-term freeze-thaw environments. Particularly, the concrete material is easy to have mechanical property reduction and show that some hazards such as peeling and the like occur when the concrete material is subjected to repeated freeze-thaw cycling action in the Tibetan area environment, and the common concrete can not achieve the effect of freeze-thaw cycle resistance.
At present, the method for improving the freeze-thaw resistance cycle function of concrete in the field of concrete is not a lot. The common concrete is not firmly bonded, has insufficient tensile strength and is easy to crack, and meanwhile, the porosity of the concrete is not controlled, so that the concrete is easy to freeze-thaw crack under the condition that the water in the gaps in the common concrete is interacted at positive and negative temperatures, and the requirement and the using effect of the freeze-thaw resistance cycle of the concrete cannot be met.
Disclosure of Invention
Aiming at the conventional concrete, the invention provides a preparation method of freeze-thaw resistant circulating concrete, which prepares the freeze-thaw resistant circulating concrete by using a base material comprising powder, aggregate, a cement air-entraining agent, graphene and water, and achieves the requirements and the using effect of the freeze-thaw resistant circulating concrete.
In order to solve the technical problems, the preparation method of the freeze-thaw resistant circulating concrete comprises the steps of preparing the freeze-thaw resistant circulating concrete by using ordinary portland cement, fly ash, granite stone powder, silica fume, graphene sheets, fine aggregates, coarse aggregates, an air entraining agent and water according to a ratio;
the preparation method of the freeze-thaw resistant circulating concrete comprises the following specific steps:
s01, preparing the powder: according to the mass parts, 75-80% of ordinary portland cement, 10-15% of fly ash, 1-3% of granite stone powder and 3-5% of silica fume are dry-mixed and uniformly mixed by a stirrer;
s02, preparing aggregate: adding 30-40% of fine aggregate and 60-70% of coarse aggregate into a stirrer to be fully mixed with the powder;
s03, mixing and stirring the basic material and the air entraining agent, adding water according to the water-cement ratio of 0.45, and uniformly stirring until the water content of the system reaches 20-22%;
s04, adding the mixture into graphene sheets accounting for 0.1-0.3% of the total volume of the mixture, mixing for 3-5min by using a stirrer, and vibrating for 2-3min by using a vibrator;
s05, randomly sampling after stirring, and if the graphene sheets are uniformly dispersed;
s06, pouring the concrete prepared in the step A within 1 h;
s07, before the concrete is poured and finally set, the surface of the concrete is compacted, flat and smooth, and segregation and bleeding cannot occur;
s08, immediately covering a plastic film on the concrete after the surface is polished by a press, and curing;
s09, when the strength reaches 25MPa, covering a gunny bag, watering and maintaining for 28 days;
s10, after the compressive strength and the impermeability grade of the freeze-thaw resistant circulating concrete prepared above meet the requirements, the concrete is normally used.
The concrete has the further scheme that the proportion of coarse aggregates to fine aggregates is 7: 3 or 6: 4.
the further scheme is that the granite powder is powder obtained by breaking machine-made sand.
Further, the slump of the concrete is 200-220 mm.
In a further scheme, the silica fume and the granite stone powder can fully reduce the porosity of concrete.
The further proposal is that the main components of the initiator are rosin resin and petroleum sulfohydrochloric acid.
The invention has the advantages that: the invention relates to a preparation method of freeze-thaw resistant circulating concrete, which comprises the steps of preparing powder and aggregate through a base material, adding an air entraining agent and graphene sheets, stirring with water according to a ratio, effectively fusing silica fume and granite stone powder with water to fill gaps, and finally adding engineering graphene sheets, so that the concrete with the freeze-thaw resistant circulating effect improved by more than 40% can be obtained, and the freeze-thaw resistant circulating function and the using effect of the concrete are enhanced.
Detailed Description
To further illustrate the technical aspects of the present invention, the detailed description of the embodiments is given, but the present invention is not limited to the embodiments listed above.
The preparation method of the freeze-thaw resistant circulating concrete comprises the steps of preparing the freeze-thaw resistant circulating concrete by using ordinary portland cement, fly ash, granite stone powder, silica fume, graphene sheets, fine aggregates, coarse aggregates, an air entraining agent and water according to a ratio;
the preparation method of the freeze-thaw resistant circulating concrete comprises the following specific steps:
s01, preparing powder: according to the mass parts, 75-80% of ordinary portland cement, 10-15% of fly ash, 1-3% of granite stone powder and 3-5% of silica fume are dry-mixed and uniformly mixed by a stirrer;
s02, preparing aggregate: adding 30-40% of fine aggregate and 60-70% of coarse aggregate into a stirrer to be fully mixed with the powder;
s03, mixing and stirring the basic material and the air entraining agent, adding water according to the water-cement ratio of 0.45, and uniformly stirring until the water content of the system reaches 20-22%;
s04, adding the mixture into graphene sheets accounting for 0.1-0.3% of the total volume of the mixture, mixing for 3-5min by using a stirrer, and vibrating for 2-3min by using a vibrator;
s05, randomly sampling after stirring, if the graphene sheets are uniformly dispersed;
s06, pouring the concrete prepared in the step A within 1 h;
s07, before the concrete is poured and finally set, the surface of the concrete is compacted, flat and smooth, and segregation and bleeding cannot occur;
s08, immediately covering a plastic film on the concrete after the surface is polished and plastered;
s09, when the strength reaches 25MPa, covering a gunny bag, watering and maintaining for 28 days;
s10, after the compressive strength and the impermeability grade of the prepared freeze-thaw resistant circulating concrete meet the requirements, the concrete is normally used.
Further, the proportion of coarse and fine concrete aggregates is 7: 3 or 6: 4.
further, granite powder is powder obtained by breaking machine-made sand.
Further, the slump of the concrete was 200-220 mm.
Further, silica fume and granite stone powder can sufficiently reduce the porosity of concrete.
Further, the main components of the initiator are rosin resin and petroleum sulfohydrochloric acid. .
Therefore, the concrete with freeze-thaw cycle resistance is prepared.
The invention has the advantages that: according to the invention, the base material comprises powder and aggregate, the air entraining agent and the graphene sheet are added, the mixture is stirred with water according to the proportion, silica fume and granite stone powder can be effectively fused with the water to fill gaps, and the engineering graphene sheet is added finally, so that the concrete with the anti-freezing and thawing cycle effect improved by more than 40% can be obtained, and the anti-freezing and thawing cycle function and the use effect of the concrete are enhanced.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification, which are directly or indirectly applied to other related technical fields, belong to the scope of the present invention.
Claims (6)
1. The preparation method of the freeze-thaw resistant circulating concrete is characterized by comprising the steps of preparing the freeze-thaw resistant circulating concrete by using ordinary portland cement, fly ash, granite stone powder, silica fume, graphene sheets, fine aggregates, coarse aggregates, an air entraining agent and water according to a ratio;
the preparation method of the freeze-thaw resistant circulating concrete comprises the following specific steps:
s01, preparing powder: according to the mass parts, 75-80% of ordinary portland cement, 10-15% of fly ash, 1-3% of granite stone powder and 3-5% of silica fume are dry-mixed and uniformly mixed by a stirrer;
s02, preparing aggregate: adding 30-40% of fine aggregate and 60-70% of coarse aggregate into a stirrer to be fully mixed with the powder;
s03, mixing and stirring the basic material and the air entraining agent, adding water according to the water-cement ratio of 0.45, and uniformly stirring until the water content of the system reaches 20-22%;
s04, adding the mixture into graphene sheets accounting for 0.1-0.3% of the total volume of the mixture, mixing for 3-5min by using a stirrer, and vibrating for 2-3min by using a vibrator;
s05, randomly sampling after stirring, and if the graphene sheets are uniformly dispersed;
s06, pouring the concrete prepared in the step A within 1 h;
s07, before the concrete is poured and finally set, the surface of the concrete is compacted, flat and smooth, and segregation and bleeding cannot occur;
s08, immediately covering a plastic film on the concrete after the surface is polished by a press, and curing;
s09, when the strength reaches 25MPa, covering a gunny bag, watering and maintaining for 28 days;
s10, after the compressive strength and the impermeability grade of the freeze-thaw resistant circulating concrete prepared above meet the requirements, the concrete is normally used.
2. The method for preparing the freeze-thaw cycle resistant concrete according to claim 1, wherein the ratio of the concrete coarse-fine aggregate is 7: 3 or 6: 4.
3. the method for preparing freeze-thaw cycle resistant concrete according to claim 1, wherein the granite powder is powder obtained by breaking machine-made sand.
4. The method for preparing concrete with freeze-thaw cycle resistance according to claim 1, wherein the slump of the concrete is 200-220 mm.
5. The method of claim 1, wherein the silica fume and the granite stone dust substantially reduce the porosity of the concrete.
6. The method for preparing a freeze-thaw cycle resistant concrete according to claim 1, wherein the main components of the initiator are rosin resin and petroleum sulfohydrochloric acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111488543.9A CN113943138A (en) | 2021-12-08 | 2021-12-08 | Preparation method of freeze-thaw resistant circulating concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111488543.9A CN113943138A (en) | 2021-12-08 | 2021-12-08 | Preparation method of freeze-thaw resistant circulating concrete |
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| Publication Number | Publication Date |
|---|---|
| CN113943138A true CN113943138A (en) | 2022-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111488543.9A Pending CN113943138A (en) | 2021-12-08 | 2021-12-08 | Preparation method of freeze-thaw resistant circulating concrete |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2823233A1 (en) * | 2001-04-06 | 2002-10-11 | Colas Sa | A carriageway resistant to freeze/unfreeze cycles for use on secondary roads has an underlayer comprising stone granules of differing maximum and minimum diameters chosen to give a void volume after compaction of 15-25% |
| CN104058678A (en) * | 2013-04-15 | 2014-09-24 | 上海建工材料工程有限公司 | Highly-antifreezing highly-slump retaining self-compacting C40 concrete |
| CN107867815A (en) * | 2017-09-25 | 2018-04-03 | 安徽砀山金兄弟实业科技有限公司 | A kind of concrete and its construction technology |
| CN111320432A (en) * | 2020-03-31 | 2020-06-23 | 吴军喜 | High-performance concrete |
| CN113003995A (en) * | 2021-03-09 | 2021-06-22 | 泉州信和石墨烯研究院有限公司 | Graphene modified concrete material and preparation method thereof |
-
2021
- 2021-12-08 CN CN202111488543.9A patent/CN113943138A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2823233A1 (en) * | 2001-04-06 | 2002-10-11 | Colas Sa | A carriageway resistant to freeze/unfreeze cycles for use on secondary roads has an underlayer comprising stone granules of differing maximum and minimum diameters chosen to give a void volume after compaction of 15-25% |
| CN104058678A (en) * | 2013-04-15 | 2014-09-24 | 上海建工材料工程有限公司 | Highly-antifreezing highly-slump retaining self-compacting C40 concrete |
| CN107867815A (en) * | 2017-09-25 | 2018-04-03 | 安徽砀山金兄弟实业科技有限公司 | A kind of concrete and its construction technology |
| CN111320432A (en) * | 2020-03-31 | 2020-06-23 | 吴军喜 | High-performance concrete |
| CN113003995A (en) * | 2021-03-09 | 2021-06-22 | 泉州信和石墨烯研究院有限公司 | Graphene modified concrete material and preparation method thereof |
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Application publication date: 20220118 |