CN108164212A - A kind of C45 graphene oxides concrete and preparation method thereof - Google Patents
A kind of C45 graphene oxides concrete and preparation method thereof Download PDFInfo
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- CN108164212A CN108164212A CN201711372979.5A CN201711372979A CN108164212A CN 108164212 A CN108164212 A CN 108164212A CN 201711372979 A CN201711372979 A CN 201711372979A CN 108164212 A CN108164212 A CN 108164212A
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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
- 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
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of C45 graphene oxides concrete and preparation method thereof, and the concrete includes the raw material of following mass fractions：168 parts of cement, water 305,655 parts of natural river sand, 1272 parts of rubble, 6.1 parts of high-efficiency water-reducing agent of poly-carboxylic acid, 2.07 parts of graphene oxide solution raw material；The proportioning of the preparation method of the concrete including raw material, is poured, is molded and conserved the mixing of raw material, and preparation method is simple to operation.The C45 graphene oxide concrete prepared using the present invention, pass through the mixing ratio of optimizing raw material, and addition graphene oxide solution raw material, not only meet concrete made of making and meet intensity requirement, and price is low, and the C45 graphene oxide concrete prices prepared by the present invention are the halfs that other technologies prepare similar product price；Meanwhile compared with common C45 Concrete Designs and preparation, 27% is reduced by the same performance C45 concrete cements dosage for preparing of the present invention, price reduction 20%, meanwhile, the reduction of cement consumption, favorable environment protection.
Description
Technical field
The invention belongs to building material technical fields, more particularly to concrete and preparation method thereof technical field.
Background technology
Concrete is widely used in the field of civil engineering such as industry and civil buildings, bridge, harbour.It is reported that from
The whole world produces 3,600,000,000 cement every year since 2011, wherein more than 55 percent comes from China.Concrete has compared with highly resistance
Compressive Strength, but high brittleness, tensile strength are low, ductility and toughness are poor, anti-permeability performance easy to crack and low, in mechanical load and ring
Under the collective effect of the factors such as border load, endurance quality reduces, structure premature degradation or failure.It is meanwhile green and sustainable
Development is the certainty in epoch, largely using concrete, needs to produce a large amount of cement, seriously affects environment.
Countries in the world scientist has carried out extensive research, seeks to solve the problems, such as these method and approach.It is main at present
Technology is：
(1) the problem of reduction ratio of mud, this method, is smaller for the ratio of mud, and intensity is higher, but without improving water
Mud hydration capability can not fundamentally improve gel microstructure, thus have to the effect for improving concrete strength and durability
Limit.Meanwhile ratio of mud reduction means that cement consumption increases, price accordingly increases, and mass production cement can generate more
Environmental pollution；
(2) the problem of addition fiber (such as carbon fiber, steel fibre, glass fibre), this method is primarily present is the technology
From macroscopically concrete cracks being prevented to increase, but no raising hydrated cementitious ability, it can not fundamentally improve the microcosmic knot of gel
Structure, thus it is limited to the effect for improving concrete strength and durability；
(3) flyash, silica flour, the Separate Fine-grained Minerals city ingredient such as ultrafine slag are added, the problem of this method is primarily present is
Make gel more closely knit by filling, but no raising hydrated cementitious ability, it can not fundamentally improve gel microstructure, because
It is and limited to the effect for improving concrete strength and durability；
(4) the problem of addition carbon nanotube, this method is primarily present is to make gel more closely knit by filling, is not improved
Hydrated cementitious ability can not fundamentally improve gel microstructure (mortar, concrete etc.), thus to improving concrete strength
It is limited with the effect of durability.And price is high, is unfavorable for promoting and applying.
Graphene is a kind of novel two-dimension nano materials, by scientists such as Novoselov and Geim in success in 2004
Ground is separated from graphite, it not only has very high tensile strength and elasticity modulus, but also also excellent electric conductivity
The specific surface area of energy, heat conductivility and super large.Graphene oxide is product of the graphene after oxidation processes, it inherits stone
The black many excellent performances of alkene, such as high-tensile, large scale surface area and big surface area, particularly better hydrophily
It is and non-conductive with cheap price so that graphene oxide is than other nano materials (such as nano particle, carbon nanotube, graphite
Alkene) be more suitable for it is compound with cement-based material.Graphene oxide surface wrinkly produce mechanical self-latching, graphene oxide with
Strong collective effect between crackle inhibits the extension of crackle, graphene oxide to promote hydrated cementitious and strong interface effect
The formation of power, tensile strength, the anti-folding for fundamentally improving normal concrete (cement paste, cement mortar and concrete) are strong
Degree, compression strength etc..Meanwhile be suitably incorporated graphene oxide and improve the microporous structure of normal concrete, it improves common mixed
Solidifying soil chloride-penetration resistance, anti-carbonation and anti-freezing property etc..But at present, the preparation method cost of graphene oxide concrete
It is excessively high, it is difficult to which that application is in the industrial production.
Invention content
A kind of C45 graphene oxides concrete of present invention offer and preparation method thereof, the match ratio of optimizing raw material of the present invention,
And production technology is optimized, C45 graphene oxide concrete is made not only to meet intensity requirement, but also price is low, reduces enterprise
Production cost.
To achieve the above object, the present invention uses following technical proposals.
A kind of C45 graphene oxides concrete, the concrete include the raw material of following mass fractions：168 parts of cement, water
305th, 655 parts of natural river sand, 1272 parts of rubble, 6.1 parts of high-efficiency water-reducing agent of poly-carboxylic acid, 2.07 parts of graphene oxide solution raw material,
Stannic oxide/graphene nano piece solid content is 8.84% in the graphene oxide solution raw material, stannic oxide/graphene nano lamellar spacing
For 0.5~2nm, piece diameter is 2~8 μm, purity ＞ 98%, and stannic oxide/graphene nano piece surface has a large amount of oxygen-containing groups,
It is non-conductive with good hydrophily.
Further, the cement is P.42.5R Portland cement, and good with high-efficiency water-reducing agent of poly-carboxylic acid compatibility
It is good；The fineness modulus of the natural river sand is 2.6, bulk density 1450kg/m3；The rubble is basalt, and grading is good：
The ratio of 5mm~10mm, 10mm~16mm and 16mm~20mm is：5:3:2, maximum particle diameter 20mm, intensity are not less than 100MPa；Institute
High-efficiency water-reducing agent of poly-carboxylic acid density is stated as 1.0~1.1g/ml, solid content is 18%~20%, and pH value is 6~7, water-reducing rate 15%
~30%, 7d, 28d compressive strength rate are not less than 180%.
Further, the graphene oxide solution raw material is prepared by following methods：
1) it is 10~20 μm to select particle size, and the graphite or expanded graphite that purity is 99% are raw material；
2) graphite raw material and sodium nitrate are added in concentrated sulfuric acid solution, the mass ratio of wherein graphite raw material and sodium nitrate is
1∶1；
3) solution for being obtained step 2) carries out ice bath processing, and red in ice bath processing procedure, molten into step 2)
Potassium permanganate is slowly added in liquid, the wherein mass ratio of potassium permanganate and graphite raw material is 3: 1~8: 1, after mixing, by this
Solution is warming up to 50~80 DEG C and carries out further oxidation reaction；
4) it treats in step 3) after the oxidation reaction of solution, solution to be poured into deionized water, and add in hydrogen peroxide and remove
Extra potassium permanganate is removed, so as to obtain the graphene oxide solution of glassy yellow；
5) graphene oxide solution obtained in step 4) is subjected to centrifugal treating, and is washed repeatedly with deionized water, most
Graphene oxide solution raw material is obtained eventually.
A kind of preparation method of C45 graphene oxides concrete, includes the following steps：
(1) 6.1 parts of high performance water reducing agent of polyocarboxy acid are added in 168 parts of water, uniform stirring 90s is denoted as solution 1；
(2) 11.5 parts of graphene oxide solution raw material is added in solution 1, uniform stirring 90s is treated after being stirred
With being denoted as solution 2；
(3) 305 parts of cement, 655 parts of natural river sands and solution 2 are sequentially added in blender, uniform stirring 120s, rotating speed
2.5m/s；
(4) and then by 1272 parts of rubbles it adds in, uniform stirring 150s, rotating speed 1.5m/s, discharges to get to the oxidation of preparation
Graphene concrete mix；
(5) graphene oxide concrete mix is poured into mold, filled in two times, filled mold 1/2 every time, put
In shake table jolt ramming, it is subject to pulp every time, avoids cross to shake, finally after its molding, carry out oxygen shield.
Further, the oxygen maintaining method includes the following steps：
A. after graphene oxide concrete mix is poured into die for molding and jolt ramming, be placed on temperature for 20 ± 2 DEG C,
Xiang was to 48 hours in the standard curing room of Shi Du≤95%, then form removal；
B. after form removal, test specimen is placed in the water tank in standard curing room, maintenance to required age, water tank solution is full
With Ca (OH)2Solution, temperature are 20 ± 2 DEG C.
Beneficial effects of the present invention are：The C45 graphene oxide concrete prepared using the present invention, passes through optimizing raw material
Mixing ratio, and graphene oxide solution raw material is added, not only meet concrete made of making and meet intensity requirement, but also price
Low, the C45 graphene oxide concrete prices prepared by the present invention are the halfs that other technologies prepare similar product price；
Meanwhile compared with common C45 Concrete Designs and preparation, the same performance C45 concrete cement dosages prepared by the present invention subtract
Few 27%, price reduction 20%, meanwhile, the reduction of cement consumption, favorable environment protection.
Specific embodiment
The technique effect of the design of the present invention, concrete structure and generation is carried out below with reference to embodiment clear, complete
Ground describes, to be completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is the one of the present invention
Section Example rather than whole embodiments, based on the embodiment of the present invention, those skilled in the art is not paying creativeness
The other embodiment obtained under the premise of labour, belongs to the scope of protection of the invention.Each technology in the invention
Feature, can be with combination of interactions under the premise of not conflicting conflict.
A kind of preparation method of C45 graphene oxides concrete, includes the following steps：
(1) 6.1 parts of high performance water reducing agent of polyocarboxy acid being added in 168 parts of water, uniform stirring 90s is denoted as solution 1,
Middle high-efficiency water-reducing agent of poly-carboxylic acid density is 1.0~1.1g/ml, and solid content is 18%~20%, and pH value is 6~7, water-reducing rate 15%
~30%, 7d, 28d compressive strength rate are not less than 180%；Stannic oxide/graphene nano piece is consolidated in the graphene oxide solution raw material
Content is 8.84%, and stannic oxide/graphene nano lamellar spacing is 0.5~2nm, and piece diameter is 2~8 μm, purity ＞ 98%, and oxygen
Graphite alkene nanometer sheet surface has a large amount of oxygen-containing groups, has good hydrophily, non-conductive.
(2) 11.5 parts of graphene oxide solution raw material is added in solution 1, uniform stirring 90s is treated after being stirred
With being denoted as solution 2.
Wherein, the graphene oxide solution raw material is to prepare as follows：
1) it is 10~20 μm to select particle size, and the graphite or expanded graphite that purity is 99% are raw material；
2) graphite raw material and sodium nitrate are added in concentrated sulfuric acid solution, the mass ratio of wherein graphite raw material and sodium nitrate is
1∶1；
3) solution for being obtained step 2) carries out ice bath processing, and in ice bath processing procedure, molten into step 2)
Potassium permanganate is slowly added in liquid, the wherein mass ratio of potassium permanganate and graphite raw material is 3: 1~8: 1, after mixing, by this
Solution is warming up to 50~80 DEG C and carries out further oxidation reaction；
4) it treats in step 3) after the oxidation reaction of solution, solution to be poured into deionized water, and add in hydrogen peroxide and remove
Extra potassium permanganate is removed, so as to obtain the graphene oxide solution of glassy yellow；
5) graphene oxide solution obtained in step 4) is subjected to centrifugal treating, and is washed repeatedly with deionized water, most
Graphene oxide solution raw material is obtained eventually.
(3) 305 parts of cement, 655 parts of natural river sands and solution 2 are sequentially added in blender, uniform stirring 120s, rotating speed
2.5m/s, wherein the cement is P.42.5R Portland cement, and good with high-efficiency water-reducing agent of poly-carboxylic acid compatibility；My god
The fineness modulus of right river sand is 2.6, bulk density 1450kg/m3。
(4) and then by 1272 parts of rubbles it adds in, uniform stirring 150s, rotating speed 1.5m/s, discharges to get to the oxidation of preparation
Graphene concrete mix.
(5) graphene oxide concrete mix is poured into mold, filled in two times, filled mold 1/2 every time, put
In shake table jolt ramming, it is subject to pulp every time, avoids cross to shake, finally after its molding, carry out oxygen shield, the oxygen maintaining method includes
Following step：
A. after graphene oxide concrete mix is poured into die for molding and jolt ramming, be placed on temperature for 20 ± 2 DEG C,
Xiang was to 48 hours in the standard curing room of Shi Du≤95%, then form removal；
B. after form removal, test specimen is placed in the water tank in standard curing room, maintenance to required age, water tank solution is full
With Ca (OH)2Solution, temperature are 20 ± 2 DEG C.
C45 graphene oxide concrete slump, the 28 days compression strength and 28 prepared by heretofore described method
Its flexural strength is as shown in table 1.It can be seen that in the stannic oxide/graphene nano piece incorporation concrete of appropriate volume, to hydrated cementitious
Adjustment effect is played, cement mortar is significantly improved and obtains mechanical property.
Table 1C45 graphene oxide concrete slump, 28 days compression strength and 28 days flexural strengths
| Slump | 28 days compression strength | 28 days flexural strengths |
| 182 | 7.74 | 45.51 |
The better embodiment of the present invention is illustrated, but the invention is not limited to the implementation above
Example, those skilled in the art can also make various equivalent modifications under the premise of without prejudice to spirit of the invention or replace
It changes, these equivalent modifications or replacement are all contained in the application claim limited range.
Claims (5)
1. a kind of C45 graphene oxides concrete, which is characterized in that the concrete includes the raw material of following mass fractions：Water
168 parts of mud, water 305,655 parts of natural river sand, 1272 parts of rubble, 6.1 parts of high-efficiency water-reducing agent of poly-carboxylic acid, graphene oxide solution are former
2.07 parts of material, stannic oxide/graphene nano piece solid content is 8.84% in the graphene oxide solution raw material, and graphene oxide is received
Rice lamellar spacing is 0.5~2nm, and piece diameter is 2~8 μm, purity ＞ 98%, and stannic oxide/graphene nano piece surface has largely
Oxygen-containing group has good hydrophily, non-conductive.
2. a kind of C45 graphene oxides concrete according to claim 1, which is characterized in that the P.42.5R cement is
Portland cement, and it is good with high-efficiency water-reducing agent of poly-carboxylic acid compatibility；The fineness modulus of the natural river sand is 2.6, heap
Product density is 1450kg/m3；The rubble is basalt, and grading is good：5mm~10mm, 10mm~16mm and 16mm~20mm
Ratio be：5:3:2, maximum particle diameter 20mm, intensity are not less than 100MPa；The high-efficiency water-reducing agent of poly-carboxylic acid density for 1.0~
1.1g/ml, solid content are 18%~20%, and pH value is 6~7, and water-reducing rate 15%~30%, 7d, 28d compressive strength rate is not less than
180%.
3. a kind of C45 graphene oxides concrete according to claim 1, which is characterized in that the graphene oxide is molten
Liquid raw material is prepared by following methods：
1) it is 10~20 μm to select particle size, and the graphite or expanded graphite that purity is 99% are raw material；
2) graphite raw material and sodium nitrate are added in concentrated sulfuric acid solution, wherein the mass ratio of graphite raw material and sodium nitrate is 1: 1；
3) solution for being obtained step 2) carries out ice bath processing, and in ice bath processing procedure, in the solution into step 2)
Potassium permanganate is slowly added to, the wherein mass ratio of potassium permanganate and graphite raw material is 3: 1~8: 1, after mixing, by this solution
It is warming up to 50~80 DEG C and carries out further oxidation reaction；
4) treat in step 3) that after the oxidation reaction of solution, solution is poured into deionized water, and add in hydrogen peroxide remove it is more
Remaining potassium permanganate, so as to obtain the graphene oxide solution of glassy yellow；
5) graphene oxide solution obtained in step 4) is subjected to centrifugal treating, and is washed repeatedly with deionized water, final
To graphene oxide solution raw material.
4. a kind of preparation method of C45 graphene oxides concrete, which is characterized in that include the following steps：
(1) 6.1 parts of high performance water reducing agent of polyocarboxy acid are added in 168 parts of water, uniform stirring 90s is denoted as solution 1；
(2) 11.5 parts of graphene oxide solution raw material is added in solution 1, uniform stirring 90s, for use after being stirred, note
For solution 2；
(3) 305 parts of cement, 655 parts of natural river sands and solution 2 are sequentially added in blender, uniform stirring 120s, rotating speed
2.5m/s；
(4) and then by 1272 parts of rubbles it adds in, uniform stirring 150s, rotating speed 1.5m/s, discharges to get to the graphite oxide of preparation
Alkene concrete mix；
(5) graphene oxide concrete mix is poured into mold, filled in two times, filled mold 1/2 every time, be placed on and shake
Dynamic platform jolt ramming, is subject to pulp every time, avoids cross to shake, finally after its molding, carries out oxygen shield.
5. according to a kind of preparation method of C45 graphene oxides concrete described in claim 4, which is characterized in that described
Oxygen maintaining method includes the following steps：
A. after graphene oxide concrete mix is poured into die for molding and jolt ramming, be placed on temperature for 20 ± 2 DEG C, it is opposite
48 hours in the standard curing room of Shi Du≤95%, then form removal；
B. after form removal, test specimen is placed in the water tank in standard curing room, maintenance to required age, water tank solution is saturation Ca
(OH)2Solution, temperature are 20 ± 2 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711372979.5A CN108164212A (en) | 2017-12-19 | 2017-12-19 | A kind of C45 graphene oxides concrete and preparation method thereof |
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| CN201711372979.5A CN108164212A (en) | 2017-12-19 | 2017-12-19 | A kind of C45 graphene oxides concrete and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111170699A (en) * | 2020-02-17 | 2020-05-19 | 佛山高途新材料科技有限公司 | Environment-friendly graphene oxide concrete and preparation method thereof |
| CN113336500A (en) * | 2021-06-25 | 2021-09-03 | 亚士漆(上海)有限公司 | Adhesive mortar and preparation method and application thereof |
-
2017
- 2017-12-19 CN CN201711372979.5A patent/CN108164212A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111170699A (en) * | 2020-02-17 | 2020-05-19 | 佛山高途新材料科技有限公司 | Environment-friendly graphene oxide concrete and preparation method thereof |
| CN113336500A (en) * | 2021-06-25 | 2021-09-03 | 亚士漆(上海)有限公司 | Adhesive mortar and preparation method and application thereof |
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Application publication date: 20180615 |
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