CN108424068B - 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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- CN108424068B CN108424068B CN201810234957.0A CN201810234957A CN108424068B CN 108424068 B CN108424068 B CN 108424068B CN 201810234957 A CN201810234957 A CN 201810234957A CN 108424068 B CN108424068 B CN 108424068B
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- graphite alkene
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- dispersing agent
- concrete material
- 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
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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
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, its raw material are as follows: 200-800 parts of portland cement, 500-1600 parts of normal sand, 10-25 parts of dispersing agent, 3-8 parts of graphite alkene nano material, 250-350 parts of mixing water.It is dissolved firstly, polyoxyethylenes nonylplenyl ether is placed in mixing water as dispersing agent with graphite alkene nano material, finely dispersed aqueous dispersion suspension is made after ultrasonic treatment；It is stirred secondly, being added into portland cement again, the graphite alkene cement slurry casting mold being stirred is vibrated compaction moulding；Finally, by demoulding 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 there are also preferable intensity, are 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, in particular to a kind of to be based on graphite alkene
Conducting concrete material and preparation method thereof.
Background technique
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 the development bring global climate problem of social economy such as arid, acid rain and ice and snow disaster 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, be from the appearance it is not noticeable, this brings potential prestige to the performance of ground heavy construction and safety
The side of body.Meanwhile when winter ice and snow weather, snow and ice cover declines in the frictional force that road surface easily causes wheel and ground, threatens
Safety, while thawing cyclic process will 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 biggish destruction to road, airport concrete, it is therefore desirable to more safely and effectively de-icing method.Concrete material
Expect that electric conductivity itself is poor, 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, ice can also be melted using electric heating property
Snow mitigates the security threat that ice disaster goes on a journey for winter, reduces destruction of the ice and snow thawing circulation 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 research achievement 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 a 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 reasonable preparation process are selected, reaches conductive phase and disperses in the base
Property and electrical and thermal conductivity unification, while guaranteeing the intensity of concrete material, it has also become the research in current conducting concrete field
Hot spot.
Graphite alkene is the newcomer after fullerene, carbon nanotube, graphene, in carbon nanomaterial family, it is one
Kind is with sp and sp2Two kinds of hybrid states combine the rigid two-dimensional surface carbon material formed, have excellent chemical stability and partly lead
Body performance has carbon chemical bond abundant, big conjugated system, wide interplanar distance, excellent chemical stability.Since its is special
Electronic structure and the similar excellent semiconducting behavior of silicon, it is many in the energy, catalysis, optics, electricity, superconduction, opto-electronic device etc.
Field has huge potential application.However, being concentrated mainly on energy storage material, pressure to the research of graphite alkene both at home and abroad at present
The research in the fields such as electric material and catalysis reducing material, and it is very few to the research in terms of graphite alkene conducting concrete.
The present invention provides a kind of conducting concrete and preparation method, is filled in graphite alkene application conducting concrete material
Divide the high conductivity using graphite alkene, significantly improves the resistivity of concrete material, not only increase the conduction of basis material
Property, it can also improve its mechanical property, be a kind of efficient conducting concrete new material, have significant innovative significance and engineering real
With value, market prospects are boundless.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of novel conductive concrete material and preparation method, institute
Stating material is a kind of New Style Concrete Materials based on graphite alkene, it is therefore an objective to be effectively improved the electric conductivity of concrete material, significantly
Resistivity is 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, main former material
Material includes portland cement, normal sand, dispersing agent, graphite alkene 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
The requirement of " common portland cement " GB175.
Normal sand: middle sand, particle size range: 0.25-0.5mm.
Dispersing agent: it uses polyoxyethylenes nonylplenyl ether (CO890), white waxy solid.
Graphite alkene: grain diameter: 200nm-1 μm.
Mixing water: ordinary tap water, main performance index should meet the rule of professional standard " concrete water standard " 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 dispersing agent.
3-8 parts of graphite alkene.
250-350 parts of mixing water.
Preferably, the mass ratio of the dispersing agent and graphite alkene is 5:1.
The quality allowable error of above-mentioned raw material: cement: ± 1%；Normal sand: ± 1%；Dispersing agent: ± 0.5%；Graphite
Alkynes: ±: 0.5%；Mixing water: ± 1%.
Compared with conventional conducting materials, graphite alkene has more specifically electronic structure and carbon chemical bond, has graphite alkene
Excellent conductor, semiconducting behavior and chemical stability.Dispersing agent is used as using polyoxyethylenes nonylplenyl ether (CO890),
The dispersing characteristic of graphite alkene in aqueous solution can be improved.
The preparation method of above-mentioned conducting concrete material, comprising the following steps:
The first step carries out surface to graphite alkene as dispersing agent using polyoxyethylenes nonylplenyl ether (CO890) and is modified
After being completely dissolved dispersing agent with mixing water, graphite alkene is added, and be ultrasonically treated under the ultrasound environments of 200W-450W in processing
The aqueous dispersion suspension of finely dispersed graphite alkene is made in 15min-45min.
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 dispersion suspension prepared in the first step is added in agitated kettle, high-speed stirred 120s-160s, then stirred at low speed
70s-100s vibrates the graphite alkene cement slurry casting mold being stirred compaction moulding.
Demoulding after sample standard curing 1 day of second step preparation is continued to conserve under standard environment to corresponding by third step
Correlated performance test is carried out after age, wherein curing temperature are as follows: 20 ± 2 DEG C, relative humidity are as follows: >=95%.
Compared with existing conducting concrete material, a kind of novel conductive concrete material provided by the invention and preparation side
Graphite alkene is applied in conducting concrete material by method, and in the case where graphite alkene volume is 1.20%, standard curing 28 days mixed
The resistivity for coagulating soil is reduced to 27 Ω m, reduces about 77% compared with control sample, while its compression strength is 62.6MPa, more right
About 23% is improved than sample.Electric conductivity of the present invention, intensity are preferable, before having significant innovative significance and potential engineer application
Scape.
Specific embodiment
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 cement 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.
Dispersing agent: polyoxyethylenes nonylplenyl ether (CO890), the production of Sigma-Aldrich chemical reagents corporation, the U.S.,
White waxy solid.
Graphite alkene: the preparation of school experiment room, powdered, grain diameter is 20nm-1 μm.
Mixing water: Daliang City's tap water.
Preparation step is as follows:
Dispersing agent is used as using polyoxyethylenes nonylplenyl ether (CO890), 20% mixing water is changed to hot water in advance, together
When the dispersing agent of hot water and accurate weighing is added into beaker, after dispersing agent dissolution after by residue 80% mixing water be added to
It is cooling in beaker.The graphite alkene of accurate weighing is added into dispersant solution again, is placed in ultrasonic environment, in 360W
Ultrasonic power conditions under ultrasonic treatment 20min finely dispersed graphite alkene dispersion suspension is made.Wherein, dispersing agent and graphite
The mass ratio of alkynes is 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
The graphite alkene dispersion suspension of preparation, high-speed stirred 120s-160s are stated, then stirs at low speed 70s-100s, the graphite that will be stirred
Alkynes cement slurry casting mold vibrates compaction moulding.
By demoulding after sample standard curing 1 day of above-mentioned preparation, continue to conserve under standard environment laggard to corresponding age
Row correlated performance is tested, wherein curing temperature are as follows: and 20 ± 2 DEG C, relative humidity are as follows: >=95%.
Table one is the resistivity and mechanical property of the conducting concrete based on graphite alkene.
| 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 implementation, be not used to limit the scope of protection of the present invention.Anyone 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,
Dispersing agent, graphite alkene and mixing water；The grain diameter of the graphite alkene is 200nm-1 μm；The normal sand partial size is 0.25-
0.5mm；The dispersing agent 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 dispersing agent；
3-8 parts of graphite alkene；
250-350 parts of mixing water；
The quality allowable error of above-mentioned raw material: cement: ± 1%；Normal sand: ± 1%；Dispersing agent: ± 0.5%；Graphite alkene: ±
0.5%；Mixing water: ± 1%.
2. a kind of conducting concrete material according to claim 1, which is characterized in that the matter of the dispersing agent and graphite alkene
Amount is than being 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. a kind of conducting concrete material according to claim 3, which is characterized in that the mixing water is tap water.
6. a kind of preparation method of any conducting concrete material of claim 1-5, it is characterised in that following steps:
The first step carries out surface to graphite alkene as dispersing agent using polyoxyethylenes nonylplenyl ether and is modified, will with mixing water
After dispersing agent is completely dissolved, graphite alkene is added, finely dispersed graphite alkene dispersion suspension is made after ultrasonic treatment；
Second step, each raw material of accurate weighing, are added to uniform stirring in agitated kettle for cement, add the first step according to the proportion
The graphite alkene of preparation disperses suspension, high-speed stirred 120s-160s, then stirs at low speed 70s-100s, the graphite alkene that will be stirred
Cement slurry casting mold vibrates compaction moulding；
Demoulding after sample standard curing 1 day of second step preparation is continued to conserve under standard environment to corresponding age by third step
Correlated performance test is carried out afterwards, wherein curing temperature are as follows: 20 ± 2 DEG C, relative humidity are as follows: >=95%.
7. preparation method according to claim 6, which is characterized in that the power of ultrasonic treatment described in the first step is
200W-450W, time 15min-45min.
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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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| CN108424068B true CN108424068B (en) | 2019-09-27 |
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| 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 |
| 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 |
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 |
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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 |
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