CN105801047A - Graphene cement-based intelligent concrete material and preparation method thereof - Google Patents
Graphene cement-based intelligent concrete material and preparation method thereof Download PDFInfo
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- CN105801047A CN105801047A CN201610092342.XA CN201610092342A CN105801047A CN 105801047 A CN105801047 A CN 105801047A CN 201610092342 A CN201610092342 A CN 201610092342A CN 105801047 A CN105801047 A CN 105801047A
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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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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses a graphene cement-based intelligent concrete material and a preparation method thereof. The material consists of the following components in parts by weight: 300-450 parts of cement, 600-1350 parts of sand, 0-1600 parts of coarse aggregate, 150-350 parts of water, 9-60 parts of graphene and 9-60 parts of dispersing agent. The preparation method comprises the following steps: dissolving the dispersing agent in the water; adding the graphene; dispersing and dissolving the graphene in an ultrasonic generator to obtain a uniform graphene solution; uniformly mixing the cement, sand and coarse aggregate; and adding the graphene solution and stirring uniformly. Electrodes are arranged in a part of a structural component needing detection, and then the mixed graphene concrete is poured to the predetermined part; and the resistivity change between the electrodes is detected to achieve an aim of detecting the force condition and damage condition of the structure and realize real-time detection of the structural component.
Description
Technical field
The present invention relates to building material field, particularly to a kind of Graphene cement based intelligent concrete material
Material and preparation method thereof.
Background technology
The research of intelligent concrete can trace back to the sixties in last century, generally requires and adds in concrete
Conductive material, such as carbons, metal class etc., including carbon fiber, white carbon black, metal dust, metal fibre
Dimensions etc., are formed and have the intelligent concrete from perceptive function, and the resistivity of concrete is held with concrete
The change of the pressure being subject to and change.It is said that in general, with the increase of conductive filler incorporation, smart material
Resistivity be gradually reduced.With the increase of pressure effect, the resistivity along pressure action direction gradually subtracts
Little, under tension effect, the resistivity along pulling force action direction is gradually increased, when crack occurs,
There is the trend increased suddenly in resistivity.Graphene is the bi-dimensional cellular shape lattice of carbon atom monolayer alignment
Structure, i.e. can be regarded as mono-layer graphite on molecular structure, and Graphene is the thinnest in known materials,
Only have the thickness of a carbon atom, but but there is the highest intensity, and be to be currently known material
In material, electric conductivity is best.So Graphene is applied to cement-base composite material, can be preferably
Realize the function of activeness and quietness, and preferably realize the function as embedded monitoring sensing element.
Summary of the invention
Because the electric property that above-mentioned Graphene is excellent, the present invention provides a kind of Graphene
Cement based intelligent concrete material and preparation method thereof.Be by cement, sand, coarse aggregate,
The raw materials such as water, Graphene and dispersant are made, and Graphene has activeness and quietness to concrete
Function, and make concrete have voltage-dependent characteristic, suitably insert electrode, can be by inspection
Survey the change of the resistivity of this intelligent concrete, reach to detect structural elements stress and impaired
The purpose of situation.This intelligent concrete is utilized to have the advantage that graphite as sensor
The incorporation of alkene has activeness and quietness function to concrete；This sensor is also concrete, can
With with structural concrete good combination, reduce the measurement error that causes because of materials variances.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of Graphene cement based intelligent concrete material, by the component group of following weight portion
Become: cement 300-450 part, sand 600-1350 part, coarse aggregate 0-1600 part, water 150-350
Part, Graphene 9-60 part, dispersant 9-60 part.
Described cement uses Portland cement or portland cement, grade is 32.5,
42.5 or 52.5.
Described Graphene uses original state graphene powder or graphene oxide powder, graphite
Alkene lamellar spacing is < 1nm, size < 1 μm.
Described dispersant is naphthalene water reducer or polycarboxylate water-reducer.
Above-mentioned Graphene cement based intelligent concrete material preparation method includes following step
Rapid:
1) dispersant is dissolved in the water, is subsequently adding Graphene, be placed in ultrasound wave and occur
Graphene broken up by device and dissolves, obtaining uniform graphene solution；
2) by cement, sand and coarse aggregate mix to uniformly；
3) graphene solution is added in the siccative stirred, be stirred for uniformly；
4) electrode, the stone that then will mix first are inserted in the position that structural elements need to detect
Ink alkene concreting enters predetermined position, by the change of resistivity between detecting electrode, reaches
To detection structure stress situation and the purpose of damage situations change.
What the present invention can be generated by has the beneficial effect that:
The inherent shortcoming of cement-based material is that cracking resistance is poor, at normal working load with outer
Enclose and under environmental activity, also can produce trickle cracking and local damage.Graphene can not only improve
The mechanical strength of cement-base composite material, improves fracture toughness, moreover it is possible to serve as cement matrix
Material conducting function component, produces excellent voltage-sensitive effect.This material is used for large scale structure
Or some key position, the stress that both can monitor construction of structures as sensor in real time is special
Property and health status, also function to the effect of activeness and quietness, kill two birds with one stone, for building intelligence
Change the means that a kind of novelty is provided.
Accompanying drawing explanation
Fig. 1 is the Graphene concrete pressure-dependent trendgram of its resistivity that embodiment 1 prepares.
Fig. 2 is the Graphene concrete pressure-dependent trendgram of its resistivity that embodiment 2 prepares.
Fig. 3 is the Graphene concrete pressure-dependent trendgram of its resistivity that embodiment 3 prepares.
Detailed description of the invention
In order to be further appreciated by the present invention, the graphite present invention provided below in conjunction with embodiment and accompanying drawing
Alkene cement based intelligent concrete material illustrates, and protection scope of the present invention is not by following example
Limit.
Embodiment 1
Cement 450 parts, sand 1350 parts, coarse aggregate 0 part, 270 parts of water, Graphene 14.4 parts,
Dispersant 14.4 parts.
Dispersant is dissolved in the water, is subsequently adding Graphene, be placed in supersonic generator
In Graphene broken up and dissolve, obtain uniform graphene solution；By cement,
Sand and coarse aggregate mix are to uniformly；Graphene solution is added in the siccative stirred,
It is stirred for uniformly；Electrode is first inserted at the position need to detected by structural elements, then will mix
The Graphene concreting got togather enters predetermined position, by resistivity between detecting electrode
Change, reaches to detect structure stress situation and the purpose of damage situations change.
The Graphene concrete crushing strength 35.4MPa prepared, by the circulation pressure of applying 1～10MPa
Power, records the pressure-dependent trend of its resistivity as shown in Figure 1.
Embodiment 2
The present embodiment difference from Example 1 is that proportioning raw materials is: cement 450 parts, sand 1350
Part, coarse aggregate 0 part, 270 parts of water, Graphene 28.8 parts, dispersant 20 parts.
The Graphene concrete crushing strength 34.9Mpa prepared, by the circulation pressure of applying 1-10Mpa
Power, records the pressure-dependent trend of its resistivity as shown in Figure 2.
Embodiment 3
The present embodiment difference from Example 1 is that proportioning raw materials is: cement 450 parts, sand 1350
Part, coarse aggregate 0 part, 270 parts of water, Graphene 57.6 parts, dispersant 30 parts.
The Graphene concrete crushing strength 30.4Mpa prepared, by the circulation pressure of applying 1-10Mpa
Power, records the pressure-dependent trend of its resistivity as shown in Figure 3.
The ultimate principle of the present invention, principal character and advantages of the present invention have more than been shown and described.This
Skilled person will appreciate that of industry, the present invention is not restricted to the described embodiments, above-described embodiment and
The principle that the present invention is simply described described in description, before without departing from spirit and scope of the invention
Putting the present invention and also have various changes and modifications, these changes and improvements both fall within claimed basis
In invention scope.
Claims (5)
1. a Graphene cement based intelligent concrete material, it is characterised in that: by following weight portion
Component forms: cement 300-450 part, sand 600-1350 part, coarse aggregate 0-1600 part, water 150-350
Part, Graphene 9-60 part, dispersant 9-60 part.
Graphene cement based intelligent concrete material the most according to claim 1, it is characterised in that
Described cement uses Portland cement or portland cement, and grade is 32.5,42.5 or 52.5.
Graphene cement based intelligent concrete material the most according to claim 1, it is characterised in that
Described Graphene uses original state graphene powder or graphene oxide powder, and graphene film layer thickness is
< 1nm, size < 1 μm.
Graphene cement based intelligent concrete material the most according to claim 1, it is characterised in that
Described dispersant is naphthalene water reducer or polycarboxylate water-reducer.
5. according to the Graphene cement based intelligent concrete material system described in claim 1-4 any one
Preparation Method, it is characterised in that comprise the following steps:
1) dispersant is dissolved in the water, is subsequently adding Graphene, be placed in supersonic generator stone
Ink alkene is broken up and dissolves, and obtains uniform graphene solution；
2) by cement, sand and coarse aggregate mix to uniformly；
3) graphene solution is added in the siccative stirred, be stirred for uniformly；
4) position that structural elements need to detect first is inserted electrode, the Graphene coagulation that then will mix
Soil pours into predetermined position, by the change of resistivity between detecting electrode, reaches to detect structure stress feelings
Condition and the purpose of damage situations change.
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| CN201610092342.XA CN105801047A (en) | 2016-02-18 | 2016-02-18 | Graphene cement-based intelligent concrete material and preparation method thereof |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106431115A (en) * | 2016-09-29 | 2017-02-22 | 中国科学院重庆绿色智能技术研究院 | Foam concrete with excellent electric conductivity |
| CN106927767A (en) * | 2017-04-25 | 2017-07-07 | 济南大学 | A kind of Electromagnetically shielding cement concrete and preparation method thereof |
| CN107216077A (en) * | 2017-06-17 | 2017-09-29 | 中康建设管理股份有限公司 | A kind of graphene modified concrete and its manufacture method |
| CN107324682A (en) * | 2017-06-13 | 2017-11-07 | 安徽智联管理咨询有限公司 | Crack resistence concrete additive and preparation method thereof |
| CN107337363A (en) * | 2016-12-30 | 2017-11-10 | 江苏苏博特新材料股份有限公司 | A kind of cement concrete durability strengthens additive |
| CN107337387A (en) * | 2017-06-13 | 2017-11-10 | 安徽智联管理咨询有限公司 | Antifreeze crack resistence concrete and preparation method thereof |
| CN107651920A (en) * | 2017-09-30 | 2018-02-02 | 东南大学 | A kind of modified graphene cement-base composite material and its preparation and application |
| CN107721318A (en) * | 2017-11-17 | 2018-02-23 | 河北达奥达建材科技股份有限公司 | A kind of graphene cement-based grouting material |
| WO2018103463A1 (en) * | 2016-12-08 | 2018-06-14 | 河海大学 | Apparatus and method for detecting chloride ion content in concrete on the basis of graphene/cement composite material |
| CN109019781A (en) * | 2018-08-14 | 2018-12-18 | 上海电力学院 | A kind of cement base composite carbon electrode and the preparation method and application thereof |
| CN109467364A (en) * | 2018-12-11 | 2019-03-15 | 广东工业大学 | A kind of graphene concrete and preparation method thereof |
| CN109704670A (en) * | 2019-02-27 | 2019-05-03 | 南昌航空大学 | A kind of graphene modified concrete |
| CN110407537A (en) * | 2019-07-31 | 2019-11-05 | 大连理工大学 | A kind of graphene reinforced reactive-powder-concrete of impact resistance |
| CN110963758A (en) * | 2019-11-14 | 2020-04-07 | 国家电网有限公司 | Intelligent concrete containing multi-scale conductive material and preparation method thereof |
| CN112500067A (en) * | 2020-11-25 | 2021-03-16 | 长安大学 | Piezoresistive self-sensing cement concrete material, pavement structure and paving method |
| WO2021093444A1 (en) * | 2019-11-14 | 2021-05-20 | 国家电网有限公司 | Gradient-type graphene smart-concrete-based corrosion detection apparatus and method |
| US11339093B2 (en) * | 2018-03-16 | 2022-05-24 | University Of Exeter | Graphene reinforced concrete |
| CN115448673A (en) * | 2022-10-24 | 2022-12-09 | 上海镎素工业技术有限公司 | Cement-based material with strong stability and preparation method thereof |
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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106431115A (en) * | 2016-09-29 | 2017-02-22 | 中国科学院重庆绿色智能技术研究院 | Foam concrete with excellent electric conductivity |
| WO2018103463A1 (en) * | 2016-12-08 | 2018-06-14 | 河海大学 | Apparatus and method for detecting chloride ion content in concrete on the basis of graphene/cement composite material |
| CN107337363A (en) * | 2016-12-30 | 2017-11-10 | 江苏苏博特新材料股份有限公司 | A kind of cement concrete durability strengthens additive |
| CN107337363B (en) * | 2016-12-30 | 2019-12-27 | 江苏苏博特新材料股份有限公司 | Cement concrete durability enhancing additive |
| CN106927767A (en) * | 2017-04-25 | 2017-07-07 | 济南大学 | A kind of Electromagnetically shielding cement concrete and preparation method thereof |
| CN107324682A (en) * | 2017-06-13 | 2017-11-07 | 安徽智联管理咨询有限公司 | Crack resistence concrete additive and preparation method thereof |
| CN107337387A (en) * | 2017-06-13 | 2017-11-10 | 安徽智联管理咨询有限公司 | Antifreeze crack resistence concrete and preparation method thereof |
| CN107216077A (en) * | 2017-06-17 | 2017-09-29 | 中康建设管理股份有限公司 | A kind of graphene modified concrete and its manufacture method |
| CN107651920A (en) * | 2017-09-30 | 2018-02-02 | 东南大学 | A kind of modified graphene cement-base composite material and its preparation and application |
| CN107721318A (en) * | 2017-11-17 | 2018-02-23 | 河北达奥达建材科技股份有限公司 | A kind of graphene cement-based grouting material |
| US11919809B2 (en) | 2018-03-16 | 2024-03-05 | Concrene Limited | Graphene reinforced concrete |
| US11339093B2 (en) * | 2018-03-16 | 2022-05-24 | University Of Exeter | Graphene reinforced concrete |
| CN109019781A (en) * | 2018-08-14 | 2018-12-18 | 上海电力学院 | A kind of cement base composite carbon electrode and the preparation method and application thereof |
| CN109467364A (en) * | 2018-12-11 | 2019-03-15 | 广东工业大学 | A kind of graphene concrete and preparation method thereof |
| CN109704670B (en) * | 2019-02-27 | 2021-09-14 | 南昌航空大学 | Graphene modified concrete |
| CN109704670A (en) * | 2019-02-27 | 2019-05-03 | 南昌航空大学 | A kind of graphene modified concrete |
| CN110407537A (en) * | 2019-07-31 | 2019-11-05 | 大连理工大学 | A kind of graphene reinforced reactive-powder-concrete of impact resistance |
| CN110963758A (en) * | 2019-11-14 | 2020-04-07 | 国家电网有限公司 | Intelligent concrete containing multi-scale conductive material and preparation method thereof |
| WO2021093444A1 (en) * | 2019-11-14 | 2021-05-20 | 国家电网有限公司 | Gradient-type graphene smart-concrete-based corrosion detection apparatus and method |
| WO2021093445A1 (en) * | 2019-11-14 | 2021-05-20 | 国家电网有限公司 | Intelligent concrete containing multi-scale conductive materials and preparation method therefor |
| CN112500067A (en) * | 2020-11-25 | 2021-03-16 | 长安大学 | Piezoresistive self-sensing cement concrete material, pavement structure and paving method |
| CN115448673A (en) * | 2022-10-24 | 2022-12-09 | 上海镎素工业技术有限公司 | Cement-based material with strong stability and preparation method thereof |
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Application publication date: 20160727 |