CN108424068A - A kind of conducting concrete material and preparation method thereof - Google Patents
A kind of conducting concrete material and preparation method thereof Download PDFInfo
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- CN108424068A CN108424068A CN201810234957.0A CN201810234957A CN108424068A CN 108424068 A CN108424068 A CN 108424068A CN 201810234957 A CN201810234957 A CN 201810234957A CN 108424068 A CN108424068 A CN 108424068A
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- graphite alkene
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- dispersant
- concrete
- mixing water
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/90—Electrical properties
- C04B2111/94—Electrically conducting materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- 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 belongs to field of functional materials, a kind of conducting concrete material and preparation method thereof is provided, the material is a kind of New Style Concrete Materials based on graphite alkene nano material, and raw material are：200 800 parts of portland cement, 500 1600 parts of normal sand, 10 25 parts of dispersant, 38 parts of graphite alkene nano material, 250 350 parts of mixing water.First, polyoxyethylenes nonylplenyl ether is placed in graphite alkene nano material in mixing water as dispersant and is dissolved, finely dispersed aqueous dispersion suspension is made after supersound process；Secondly, it then is added into portland cement and is stirred, the graphite alkene cement slurry casting mold being stirred is vibrated compaction moulding；Finally, by form removal after sample standard curing.Concrete material prepared by the present invention not only has excellent electric conductivity, hence it is evident that reduces the resistivity of concrete material, while also preferable intensity, is conducive to the practical engineering application of novel conductive concrete.
Description
Technical field
The invention belongs to field of functional materials, design a kind of conducting concrete material, more particularly to a kind of to be based on graphite alkene
Conducting concrete material of nano material and preparation method thereof.
Background technology
With the progress of modern society, the large-scale grounds such as high building, road, bridge and dam build to have obtained swift and violent hair
Exhibition, while global climate problem such as arid, acid rain and ice and snow disaster that the development of social economy is brought are to ground architecture character
More stringent requirements are proposed for energy.Concrete material is as most common building structural materials, if internal generation is cracked or other
Destructive process is not noticeable from the appearance, this brings potential prestige to the performance of ground heavy construction and safety
The side of body.Meanwhile when winter ice and snow weather, the frictional force that snow and ice cover easily causes wheel and ground in road surface declines, and threatens
Safety, while thawing cyclic process can cause road, airport concrete material volume expansion and shrink, prolonged and repeated effect
Under can reduce load supporting ability of ground, ultimately form different kinds of roads, airport disease, influence service life, and common salting removes
Ice method has larger destruction to road, airport concrete, it is therefore desirable to more safely and effectively de-icing method.Concrete material
Material electric conductivity itself is poor, and addition conductive phase can improve its resistivity, and concrete is made to show certain electric conductivity, not only can be with
By the cracking destruction inside the variation prediction concrete substrate of concrete resistivity, electric heating property can also be utilized to melt ice
Snow mitigates the security threat that ice disaster goes on a journey for winter, reduces destruction of the ice and snow thawing cycle to road, airport, extends
Service life.Therefore, variation of the conducting concrete material for detection concrete microstructure and performance is studied and paid attention to, is improved
Remove the snow ability on ground, extends road, airport service life has a very important significance.
Currently, researcher achieves certain achievement in research in conducting concrete field both at home and abroad, but it is conductive at present
The preparation process of concrete is not mature enough, and resistivity measurement result discrete type is larger, while the conductive facing conductive of high additive
The intensity effect of concrete is larger, influences the military service performance of concrete material.In addition, conductive phase being uniformly dispersed in concrete
Property also has larger impact to its performance, and the electric conductivity of basis material, the uniformity of thermal conductivity are to the performance in actual application
There is direct influence.Therefore, suitable conductive phase and rational preparation process are selected, reaches conductive phase and disperses in the base
Property and electrical and thermal conductivity unification, while ensureing the intensity of concrete material, it has also become the research in current conducting concrete field
Hot spot.
Graphite alkene nano material be after fullerene, carbon nanotube, graphene, in carbon nanomaterial family it is new at
Member, it is one kind with sp and sp2Two kinds of hybrid states combine the rigid two dimensional surface carbon material formed, have excellent chemical stabilization
Property and semiconducting behavior, there is abundant carbon chemical bond, big conjugated system, wide interplanar distance, excellent chemical stability.Due to
Its special electronic structure and the excellent semiconducting behavior of similar silicon, in the energy, catalysis, optics, electricity, superconduction, photoelectron device
The numerous areas such as part have huge potential application.It is deposited however, being concentrated mainly on the energy to the research of graphite alkene both at home and abroad at present
The research in the fields such as material, piezoelectric material and catalysis reducing material is stored up, and it is very few to the research in terms of graphite alkene conducting concrete.
A kind of conducting concrete of present invention offer and preparation method, are by graphite alkene Application of micron conducting concrete material
In material, the high conductivity of graphite alkene is made full use of, the resistivity of concrete material is significantly improved, not only increases basis material
Electric conductivity, can also improve its mechanical property, be a kind of efficient conducting concrete new material, have significant innovative significance and
Engineering practical value, market prospects are boundless.
Invention content
In view of the problems of the existing technology, a kind of novel conductive concrete material of present invention offer and preparation method, institute
It is a kind of New Style Concrete Materials based on graphite alkene nano material to state material, it is therefore an objective to be effectively improved the conduction of concrete material
Property, resistivity is significantly reduced, while there is preferable intensity, obtains a kind of new and effective conducting concrete material.
In order to achieve the above object, technical scheme is as follows：
A kind of conducting concrete material, the material are a kind of New Style Concrete Materials based on graphite alkene nano material,
Main raw material(s) includes portland cement, normal sand, dispersant, graphite alkene nano material and mixing water.
The requirement of raw material each component is as follows：
Cement：II 42.5 grades of portland cements of P I 42.5 or P, main performance index should meet existing national standards
《Common portland cement》The requirement of GB175.
Normal sand：Middle sand, particle size range：0.25-0.5mm.
Dispersant：Using polyoxyethylenes nonylplenyl ether (CO890), white waxy solid.
Graphite alkene nano material：Grain diameter：200nm-1μm.
Mixing water：Ordinary tap water, main performance index should meet professional standard《Concrete water standard》The rule of JGJ63
It is fixed.
In conjunction with its experimental performance index, the parts by weight of raw material each component are as follows：
200-800 parts of cement.
500-1600 parts of normal sand.
15-25 parts of dispersant.
3-8 parts of graphite alkene nano material.
250-350 parts of mixing water.
Preferably, the dispersant and the mass ratio of graphite alkene nano material are 5:1.
The quality allowable error of above-mentioned raw material：Cement：± 1%；Normal sand：± 1%；Dispersant：± 0.5%；Graphite
Alkynes nano material：±:0.5%；Mixing water：± 1%.
Compared with conventional conducting materials, graphite alkene nano material has more specifically electronic structure and carbon chemical bond, makes stone
Black alkynes nano material has excellent conductor, semiconducting behavior and chemical stability.Using polyoxyethylenes nonylplenyl ether
(CO890) it is used as dispersant, the dispersing characteristic of graphite alkene nano material in aqueous solution can be improved.
The preparation method of above-mentioned conducting concrete material, includes the following steps：
The first step carries out graphite alkene nano material as dispersant using polyoxyethylenes nonylplenyl ether (CO890)
Dispersant is placed in graphite alkene nano material in hot water and dissolves by surface modification treatment, and under the ultrasound environments of 200W-450W
It is ultrasonically treated 15min-45min, the aqueous dispersion suspension of finely dispersed graphite alkene nano material is made.
Cement is first added in agitated kettle and stirs evenly according to each raw material of each group distribution ratio accurate weighing by second step, then
Graphite alkene nano material dispersion suspension prepared in the first step is added in agitated kettle, high-speed stirred 120s-160s, then
Stirring at low speed 70s-100s vibrates the graphite alkene cement slurry casting mold being stirred compaction moulding.
Third walks, form removal after sample standard curing 1 day prepared by second step, continues under standard environment maintenance to corresponding
Correlated performance test is carried out after age, wherein curing temperature is：20 ± 2 DEG C, relative humidity is：>=95%.
Compared with existing conducting concrete material, a kind of novel conductive concrete material provided by the invention and preparation side
Method, by graphite alkene Application of micron in conducting concrete material, in the case where graphite alkene volume is 1.20%, standard is supported
The resistivity of 28 days concrete of shield is reduced to 27 Ω m, reduces about 77% compared with control sample, while its compression strength is
62.6MPa improves about 23% compared with control sample.Electric conductivity of the present invention, intensity are preferable, have significant innovative significance and potential
Future in engineering applications.
Specific implementation mode
Below in conjunction with specific embodiment, the present invention will be further described：
Embodiment 1
Certain conducting concrete material and performance are as follows：
Portland cement：I 42.5 portland cements of P, the production of small open country field cement plant, 28 days compression strength 50.7MPa, 28
Its flexural strength 8.6MPa.
Normal sand：Middle sand, particle size range：0.25-0.5mm.
Dispersant：Polyoxyethylenes nonylplenyl ether (CO890), the production of Sigma-Aldrich chemical reagents corporations of the U.S.,
White waxy solid.
Graphite alkene nano material：Prepared by school experiment room, powdered, and grain diameter is 20nm-1 μm.
Mixing water：Daliang City's tap water.
Preparation process is as follows：
Dispersant is used as using polyoxyethylenes nonylplenyl ether (CO890), 20% mixing water is changed to hot water in advance, together
When the dispersant of hot water and accurate weighing is added into beaker, after dispersant dissolving after by residue 80% mixing water be added to
It is cooling in beaker.The graphite alkene nano material of accurate weighing is added into dispersant solution again, is placed in ultrasonic environment
In, it is ultrasonically treated 20min under the ultrasonic power conditions of 360W, finely dispersed graphite alkene dispersion suspension is made.Wherein, divide
Powder and the mass ratio of graphite alkene nano material are 5 to 1.
According to each each raw material of raw material proportioning accurate weighing, cement is added in agitated kettle and is stirred evenly, is added
State the graphite alkene dispersion suspension of preparation, high-speed stirred 120s-160s, then stirring at low speed 70s-100s, the graphite that will be stirred
Alkynes cement slurry casting mold vibrates compaction moulding.
By form removal after the sample standard curing 1 day of above-mentioned preparation, continue to conserve under standard environment laggard to corresponding age
Row correlated performance is tested, and wherein curing temperature is：20 ± 2 DEG C, relative humidity is：>=95%.
Table one is the resistivity and mechanical property of the conducting concrete based on graphite alkene nano material.
| Resistivity/Ω m | Compression strength/MPa | |
| Compare concrete | 120 | 50.7 |
| Graphite alkene modified concrete | 27 | 62.6 |
Embodiment described above is merely preferred embodiments of the present invention, and is based only under general idea of the present invention
Certain realization method, be not used to limit protection scope of the present invention.Any one skilled in the art is at this
Invent any modification, improvement or the replacement made in the technical scope that shows, should all cover protection scope of the present invention it
It is interior.
Claims (7)
1. a kind of conducting concrete material, which is characterized in that the conducting concrete material include portland cement, normal sand,
Dispersant, graphite alkene nano material and mixing water；The grain diameter of the graphite alkene nano material is 200nm-1 μm；The mark
Quasi- sand grains diameter is 0.25-0.5mm；The dispersant is polyoxyethylenes nonylplenyl ether, white waxy solid；
In conjunction with its experimental performance index, the parts by weight of raw material each component are as follows：
200-800 parts of cement；
500-1600 parts of normal sand；
15-25 parts of dispersant；
3-8 parts of graphite alkene nano material；
250-350 parts of mixing water；
The quality allowable error of above-mentioned raw material：Cement：± 1%；Normal sand：± 1%；Dispersant：± 0.5%；Graphite alkene is received
Rice material：±:0.5%；Mixing water：± 1%.
2. a kind of conducting concrete material according to claim 1, which is characterized in that the powder and graphite alkene nanometer material
The mass ratio of material is preferably 5:1.
3. a kind of conducting concrete material according to claim 1 or 2, which is characterized in that the cement is P I 42.5
Or II 42.5 grades of portland cements of P.
4. a kind of conducting concrete material according to claim 1 or 2, which is characterized in that the mixing water is tap water.
5. the material of heavy metal, feature exist in a kind of solidification fly ash from burning city domestic garbage according to claim 3
In the mixing water is tap water.
6. a kind of preparation method of any conducting concrete materials of claim 1-5, it is characterised in that following steps：
The first step carries out surface modification to graphite alkene nano material as dispersant using polyoxyethylenes nonylplenyl ether, uses
After dispersant is completely dissolved by mixing water, graphite alkene nano material is added, finely dispersed graphite alkene point is made after supersound process
Dissipate suspension；
Cement is added to uniform stirring in agitated kettle, adds the first step by second step according to proportioning each raw material of accurate weighing
The graphite alkene of preparation disperses suspension, high-speed stirred 120s-160s, then stirring at low speed 70s-100s, the graphite alkene that will be stirred
Cement slurry casting mold vibrates compaction moulding；
Third walks, form removal after sample standard curing 1 day prepared by second step, continues under standard environment maintenance to corresponding age
Correlated performance test is carried out afterwards, and wherein curing temperature is：20 ± 2 DEG C, relative humidity is：>=95%.
7. preparation method according to claim 6, which is characterized in that the power being ultrasonically treated described in the first step is
200W-450W, time 15min-45min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810234957.0A CN108424068B (en) | 2018-03-21 | 2018-03-21 | A kind of conducting concrete material and preparation method thereof |
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| CN201810234957.0A CN108424068B (en) | 2018-03-21 | 2018-03-21 | A kind of conducting concrete material and preparation method thereof |
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| CN108424068A true CN108424068A (en) | 2018-08-21 |
| CN108424068B CN108424068B (en) | 2019-09-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111916248A (en) * | 2020-08-10 | 2020-11-10 | 西安宏星电子浆料科技股份有限公司 | Thick-film resistor paste with electrostatic discharge resistance and low encapsulation change rate |
| CN112624725A (en) * | 2019-10-09 | 2021-04-09 | 中国科学院宁波材料技术与工程研究所 | Conductive concrete composition capable of being rapidly cured and formed, preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103102092A (en) * | 2013-02-26 | 2013-05-15 | 重庆市电力公司电力科学研究院 | Concrete modifier and concrete |
| CN103420647A (en) * | 2013-07-25 | 2013-12-04 | 南京航空航天大学 | Conductive material co-doping conductive concrete and preparation method thereof |
| CN106517957A (en) * | 2016-11-22 | 2017-03-22 | 江苏苏博特新材料股份有限公司 | Concrete with common strength and high elastic modulus and preparation method thereof |
-
2018
- 2018-03-21 CN CN201810234957.0A patent/CN108424068B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103102092A (en) * | 2013-02-26 | 2013-05-15 | 重庆市电力公司电力科学研究院 | Concrete modifier and concrete |
| CN103420647A (en) * | 2013-07-25 | 2013-12-04 | 南京航空航天大学 | Conductive material co-doping conductive concrete and preparation method thereof |
| CN106517957A (en) * | 2016-11-22 | 2017-03-22 | 江苏苏博特新材料股份有限公司 | Concrete with common strength and high elastic modulus and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112624725A (en) * | 2019-10-09 | 2021-04-09 | 中国科学院宁波材料技术与工程研究所 | Conductive concrete composition capable of being rapidly cured and formed, preparation method and application thereof |
| CN111916248A (en) * | 2020-08-10 | 2020-11-10 | 西安宏星电子浆料科技股份有限公司 | Thick-film resistor paste with electrostatic discharge resistance and low encapsulation change rate |
| CN111916248B (en) * | 2020-08-10 | 2021-12-21 | 西安宏星电子浆料科技股份有限公司 | Thick-film resistor paste with electrostatic discharge resistance and low encapsulation change rate |
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| Publication number | Publication date |
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| CN108424068B (en) | 2019-09-27 |
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