CN108439903A - A kind of Anti-pressure conducting concrete - Google Patents
A kind of Anti-pressure conducting concrete Download PDFInfo
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- CN108439903A CN108439903A CN201810371816.3A CN201810371816A CN108439903A CN 108439903 A CN108439903 A CN 108439903A CN 201810371816 A CN201810371816 A CN 201810371816A CN 108439903 A CN108439903 A CN 108439903A
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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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1018—Coating or impregnating with organic materials
- C04B20/1022—Non-macromolecular compounds
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/12—Multiple coating or impregnating
-
- 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
- C04B28/06—Aluminous 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
Abstract
The invention discloses a kind of Anti-pressure conducting concretes, belong to building material technical field.It counts in parts by weight, weighs 50~80 parts of cement, 60~120 parts of sand successively, 20~25 parts of flyash, 5~8 parts of dispersants, 8~18 parts of modified fibres, by water and cement mixing in blender, and sand is added in 10~15 parts of property-modifying additives and 80~130 parts of water into blender successively, flyash, modified fibre, property-modifying additive and dispersant, in temperature be 45~55 DEG C, under conditions of rotating speed is 250~380r/min, after being stirred 40~50min, Anti-pressure conducting concrete is obtained.Gained foam concrete of the invention has excellent compressive property, and electric conductivity is preferable.
Description
Technical field
The invention discloses a kind of Anti-pressure conducting concretes, belong to building material technical field.
Background technology
For concrete as a kind of construction material being widely used, it has convenient material drawing, cheap, compression strength
The advantages that height, normability is good；But normal concrete is either in moist or drying regime, does not all have good electric conductivity
（The resistivity of normal concrete in the dry state is 104~109Ω·m；Reach 10 under dampness1~10 4Ω m, and
Metallic conductor resistivity is generally 10-7Ω m magnitudes）.To improve its electric conductivity, then need that certain conducting medium is added,
Conducting concrete is made.In order to make it have electric conductivity, improved by adding different conducting mediums in normal concrete
The electric conductivity of concrete makes the technology that concrete becomes good conductive material have become the mainstream think of that conducting concrete is researched and developed
Think.Conducting concrete because it is conductive can, and do not lose an incision technology of concrete and the advantage in performance again and in numerous necks
There is huge potential application foreground in domain.
The resistivity of conducting concrete with satisfactory electrical conductivity is relatively low, and with good heating property, pressure-sensitive and
Preferable capability of electromagnetic shielding is widely used in the ice-melt that removes the snow, indoor heating, the necks such as electromagnetic shielding and structural health detection
Domain.Currently, the conducting concrete for being studied application includes steel fibre and slag conducting concrete, electrically conductive graphite concrete, carbon
Fiber conducting concrete and electro-conductive concrete with nano charcoal black etc..
There is certain defect in above-mentioned conventional conductive concrete：Steel fiber conductive concrete with the age of concrete increase
Steel fibre will produce corrosion, and resistivity can be increased gradually, and some researches show that its resistivity of the steel fiber reinforced concrete of 1 age period
10 times are increased when relatively just making finishes to have a surplus.And if to make electrically conductive graphite concrete with good conductivity, it needs
The graphite powder of large dosage is added in concrete, substantially reduces the intensity and ductility of concrete.Using carbon fiber as conductive material
When, since carbon fiber is expensive, and it is easy to generate agglomerate in concrete, it is uneven so as to cause conduction, and then cause mixed
The problem of solidifying soil hot-spot.
Therefore, improve conducting concrete mechanical property and electric conductivity, become it and promote and apply urgent problem to be solved.
Invention content
The present invention solves the technical problem of：It is asked for conducting concrete concrete crushing strength and electric conductivity are bad
Topic, provides a kind of preparation method of conducting concrete.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：
A kind of Anti-pressure conducting concrete, which is characterized in that be made of the raw material of following weight fraction：
50~80 parts of cement
60~120 parts of sand
20~25 parts of flyash
5~8 parts of dispersant
8~18 parts of modified fibre
10~15 parts of property-modifying additive
80~130 parts of water
The preparation method of the modified fibre is：
Glass fibre is washed 3~5 times with absolute ethyl alcohol, and by glass fibre and the ammonium fluoride solutions in mass ratio 1 after washing：
5~1：8 mixing, and the hydrofluoric acid of 0.1~0.2 times of glass fiber quality is added, it after being stirred, filters, washing must pre-process
Glass fibre, by pretreated glass fiber and water in mass ratio 1：8~1：10 mixing, and glass fiber quality 0.2~0.3 is added
Carbomer again after being stirred, adjusts pH to neutrality, filtering obtains pre- modified glass-fiber, by pre- modified glass-fiber and oxygen
Graphite alkene mixture in mass ratio 1：5~1：8 mixing, impregnate filtering, obtain 1 processing glass fibre, glass fibers are handled by 1 time
Dimension and chitosan mixed liquor in mass ratio 1：5~1：After 8 mixing are impregnated, and 1 processing glass fiber quality 0.1~0.2 is added
The glutaraldehyde of nano zine oxide again and 1 0.08~0.18 times of glass fiber quality of processing, after being stirred, filtering obtains 2 times
Glass fibre is handled to get modified fibre；
The preparation method of the property-modifying additive is：
Using carbon fiber as anode, copper coin is added in nitric acid jointly as cathode, after being electrolysed 10~15h, obtains pretreatment carbon fiber,
It will pretreatment carbon fiber and blended wax in mass ratio 1：4~1：8 mixing, and 0.1~0.3 times of pretreatment carbon fiber quality is added
Silane coupling agent, after being stirred, is filtered, and freezing obtains pre- modified carbon fiber, by pre- modified carbon fiber and paraffin in mass ratio 1：
3~1：4 mixing, and the calcium bicarbonate of 0.3~0.4 times of the inorganic agent and Quality of Paraffin Waxes of 0.2~0.3 times of Quality of Paraffin Waxes is added, it stirs
Mixing is mixed, Freezing smashing obtains property-modifying additive.
The cement is any one in portland cement or aluminate cement.
The sand is the sand that mesh number is 100 mesh and the sand in mass ratio 1 that mesh number is 300 mesh：2~1：3 mixing gained.
The dispersant is dispersant NNO, any one in Dispersant MF or dispersant 5040.
The preparation method of the graphene oxide mixture is by graphene oxide and water in mass ratio 1：100~1：180
It mixes, after sonic oscillation, adjusts pH to 7.5~8.5, obtain graphene oxide mixture.
The preparation method of the chitosan mixed liquor is by chitosan and water in mass ratio 1：200~1：250 mixing, and adjust
After saving pH to 3.0~4.0, chitosan mixed liquor is obtained.
The blended wax is by the paraffin in mass ratio 2 of polyethylene wax and carbon atom number 25~35：7~2：9 mixing to get
Blended wax.
The paraffin is the mineral wax mixture of carbon atom number 22~28.
The silane coupling agent is silane resin acceptor kh-550, in silane coupling agent KH-560 or Silane coupling reagent KH-570
Any one.
The preparation method of the inorganic agent is will（N- amidino groups）Dodecylacrylamide and polyethylene glycol-p-methyl benzenesulfonic acid
Ester in mass ratio 2：1~1：1 mixing, and be added polyethylene glycol -0.1~0.2 times of p-methyl benzenesulfonic acid ester quality paracide and
The ferrocene of polyethylene glycol -0.08~0.12 times of p-methyl benzenesulfonic acid ester quality, is stirred, obtains inorganic agent.
The beneficial effects of the invention are as follows：
（1）Modified fibre is added when preparing conducting concrete by the present invention, and first, the matrix of modified fibre is glass fibre,
The binding force between interiors of products substance can be made to improve after being added in product, to make the compression strength of product improve, secondly, glass
For fiber by modified, fiberglass surfacing covers the assembling shell of one layer of graphene oxide and chitosan, due to aoxidizing stone
Black alkene is conductive, to make the electric conductivity of product improve, and since the presence of assembling shell can avoid glass fibre
Erosion, to make the compression strength of product further increase, furthermore, in the process for preparing modified fibre, chitosan can be in glass
After glass fiber surface film forming, it is crosslinked under the action of glutaraldehyde, and nano zine oxide is bonded to inside chitosan, to
The electric conductivity of product is set to further increase；
（2）Property-modifying additive is added when preparing conducting concrete by the present invention, on the one hand, carbon fiber is added in property-modifying additive
Dimension, electric conductivity and compression strength to make product further increase, and on the other hand, property-modifying additive carbon fiber is at process
Reason rear surface contains wax component, and containing the widened imitated vesicle structure of absorbable carbon dioxide, to after being added in product
It can be uniformly distributed in interiors of products, and then the compression strength of product and electric conductivity is made to further increase, and wax component exists
It can gradually melt during product use, the hole inside product year is filled, to make the water proofing property of product improve.
Specific implementation mode
By graphene oxide and water in mass ratio 1：100~1：180 mixing surpass under conditions of frequency is 55~65kHZ
After 15~30min of sound oscillation, the sodium hydroxide solution for being 8~12% with mass fraction adjusts graphene oxide and aqueous mixtures
PH to 7.5~8.5 obtains graphene oxide mixture；By chitosan and water in mass ratio 1：200~1：250 mix, and are in temperature
30~45 DEG C, be 25~40% with mass fraction after being stirred 15~20min under conditions of rotating speed is 200~300r/min
Acetic acid solution adjust chitosan and aqueous mixtures pH to 3.0~4.0, obtain chitosan mixed liquor；It will（N- amidino groups）Dodecane
Base acrylamide and polyethylene glycol-p-methyl benzenesulfonic acid ester in mass ratio 2：1~1：1 is mixed in beaker, and is added into beaker
Paracide and polyethylene glycol-p-methyl benzenesulfonic acid ester quality 0.08 of polyethylene glycol -0.1~0.2 times of p-methyl benzenesulfonic acid ester quality
~0.12 times of ferrocene, in temperature be 65~85 DEG C, rotating speed be 200~300r/min under conditions of be stirred 1~3h after,
Obtain inorganic agent；Glass fibre is washed 3~5 times with absolute ethyl alcohol, and by glass fibre and the mass fraction after washing be 10~
25% ammonium fluoride solutions in mass ratio 1：5~1：8 are mixed in flask, and into flask be added glass fiber quality 0.1~
The hydrofluoric acid that 0.2 times of mass fraction is 15~20% is 40~50 DEG C in temperature, and rotating speed is under conditions of 250~300r/min
After being stirred 80~120min, filtering obtains filter cake, after filter cake is washed with distilled water 5~8 times, obtains pretreated glass fiber,
By pretreated glass fiber and water in mass ratio 1：8~1：10 mixing, and add into the mixture of pretreated glass fiber and water
The carbomer for entering 0.2~0.3 times of glass fiber quality is 40~60 DEG C in temperature, and rotating speed is under conditions of 200~300r/min
After being stirred 20~40min, pretreated glass fibre blend is obtained, the sodium hydroxide solution for being 10~15% with mass fraction
After the pH to 7.0~7.5 for adjusting pretreated glass fibre blend, filtering obtains pre- modified glass-fiber, by pre- modified glass fibre
Dimension and graphene oxide mixture in mass ratio 1：5~1：8 mixing, after impregnating 2~3h under conditions of being 30~45 DEG C in temperature,
Filtering obtains 1 processing glass fibre, by 1 processing glass fibre and chitosan mixed liquor in mass ratio 1：5~1：8 mixing, in
After temperature impregnates 1~2h under conditions of being 40~50 DEG C, add to 1 processing glass fibre with the mixture of chitosan mixed liquor
Enter the nano zine oxide and 1 0.08~0.18 times of glass fiber quality of processing of 1 0.1~0.2 times of glass fiber quality of processing
Glutaraldehyde, in temperature be 40~50 DEG C, rotating speed be 200~300r/min under conditions of be stirred 20~40min after, mistake
Filter obtains 2 processing glass fibres to get modified fibre；Using carbon fiber as anode, quality point is added as cathode jointly for copper coin
Number presses quality in 40~65% nitric acid, after being electrolysed 10~15h, to obtain pretreatment carbon fiber, by pretreatment carbon fiber and blended wax
Than 1：4~1：8 mixing, and pretreatment carbon fiber quality 0.1~0.3 is added into pretreatment carbon fiber and the mixture of blended wax
Silane coupling agent again is 80~120 DEG C in temperature, and rotating speed is stirred 30~40min under conditions of being 200~350r/min
Afterwards, it filters, freezing obtains pre- modified carbon fiber, by pre- modified carbon fiber and paraffin in mass ratio 1：3~1：4 mixing, and to changing in advance
Property carbon fiber and paraffin mixture in 0.3~0.4 times of the inorganic agent and Quality of Paraffin Waxes of 0.2~0.3 times of Quality of Paraffin Waxes is added
Calcium bicarbonate is 30~45 DEG C in temperature, after rotating speed is stirred 15~40min under conditions of being 200~300r/min, freezes
It crushes, obtains property-modifying additive；It counts in parts by weight, weighs 50~80 parts of cement, 60~120 parts of sand, 20~25 parts of fine coal successively
Ash, 5~8 parts of dispersants, 8~18 parts of modified fibres, 10~15 parts of property-modifying additives and 80~130 parts of water, water and cement are mixed
Together in blender, and sand is added into blender successively, flyash, modified fibre, property-modifying additive and dispersant, in temperature
It is 45~55 DEG C, under conditions of rotating speed is 250~380r/min, after being stirred 40~50min, obtains Anti-pressure conduction coagulation
Soil.Told cement is any one in portland cement or aluminate cement.The sand is that the sand that mesh number is 100 mesh is with mesh number
The sand of 300 mesh in mass ratio 1：2~1：3 mixing gained.The dispersant is dispersant NNO, Dispersant MF or dispersant 5040
In any one.The blended wax is by the paraffin in mass ratio 2 of polyethylene wax and carbon atom number 25~35：7~2：9 mixing,
Up to blended wax.The paraffin is the mineral wax mixture of carbon atom number 22~28.The silane coupling agent is silane coupling agent KH-
Any one in 550, silane coupling agent KH-560 or Silane coupling reagent KH-570.
Example 1
By graphene oxide and water in mass ratio 1：180 mixing are used under conditions of frequency is 65kHZ after sonic oscillation 30min
The sodium hydroxide solution that mass fraction is 8~12% adjusts the pH to 8.5 of graphene oxide and aqueous mixtures, obtains graphene oxide
Mixture；By chitosan and water in mass ratio 1：250 mixing are 45 DEG C in temperature, under conditions of rotating speed is 300r/min, stir
After mixing 20min, the acetic acid solution for being 40% with mass fraction adjusts the pH to 4.0 of chitosan and aqueous mixtures, and it is mixed to obtain chitosan
Close liquid；It will（N- amidino groups）Dodecylacrylamide and polyethylene glycol-p-methyl benzenesulfonic acid ester in mass ratio 1：1 is mixed in beaker
In, and into beaker be added polyethylene glycol -0.2 times of p-methyl benzenesulfonic acid ester quality paracide and polyethylene glycol-to toluene sulphur
The ferrocene that 0.12 times of acid esters quality is 85 DEG C in temperature, after rotating speed is stirred 3h under conditions of being 300r/min, must handle
Agent；Glass fibre is washed 5 times with absolute ethyl alcohol, and by after washing glass fibre and mass fraction be 25% ammonium fluoride it is molten
Liquid in mass ratio 1：8 are mixed in flask, and the hydrogen that the mass fraction of 0.2 times of glass fiber quality is 20% is added into flask
Fluoric acid is 50 DEG C in temperature, and after rotating speed is stirred 120min under conditions of being 300r/min, filtering obtains filter cake, filter cake is used
After distillation water washing 8 times, pretreated glass fiber is obtained, by pretreated glass fiber and water in mass ratio 1：10 mixing, and to pre-
The carbomer that 0.3 times of glass fiber quality is added in the mixture of glass fibre and water is handled, is 60 DEG C in temperature, rotating speed is
After being stirred 40min under conditions of 300r/min, pretreated glass fibre blend is obtained, the hydrogen-oxygen for being 15% with mass fraction
After changing the pH to 7.5 that sodium solution adjusts pretreated glass fibre blend, filtering obtains pre- modified glass-fiber, by pre- modified glass
Glass fiber and graphene oxide mixture in mass ratio 1：8 mixing, after impregnating 3h under conditions of being 45 DEG C in temperature, filtering obtains 1
Secondary processing glass fibre, by 1 processing glass fibre and chitosan mixed liquor in mass ratio 1：8 mixing, in temperature be 40~50
After impregnating 2h under conditions of DEG C, glass fibers are handled to being added in the mixture of 1 processing glass fibre and chitosan mixed liquor 1 time
Tie up 0.2 times of quality nano zine oxide and 1 time processing 0.18 times of glass fiber quality glutaraldehyde, in temperature be 50 DEG C, rotating speed
After being stirred 40min under conditions of 300r/min, filtering obtains 2 processing glass fibres to get modified fibre；By carbon fiber
Dimension is used as anode, copper coin to be added jointly as cathode in the nitric acid that mass fraction is 65%, after being electrolysed 15h, obtains pretreatment carbon fiber
Dimension, by pretreatment carbon fiber and blended wax in mass ratio 1：8 mixing, and add into pretreatment carbon fiber and the mixture of blended wax
The silane coupling agent for entering to pre-process 0.3 times of carbon fiber quality is 120 DEG C in temperature, and rotating speed stirs under conditions of being 350r/min
It after mixing 40min, filters, freezing obtains pre- modified carbon fiber, by pre- modified carbon fiber and paraffin in mass ratio 1：4 mixing, and to
The bicarbonate of 0.4 times of the inorganic agent and Quality of Paraffin Waxes of 0.3 times of Quality of Paraffin Waxes is added in the mixture of pre- modified carbon fiber and paraffin
Calcium is 45 DEG C in temperature, and after rotating speed is stirred 40min under conditions of being 300r/min, Freezing smashing obtains property-modifying additive；
It counts in parts by weight, weighs 80 parts of cement successively, 120 parts of sand, 25 parts of flyash, 8 parts of dispersants, 18 parts of modified fibres, 15 parts
By water and cement mixing in blender, and sand is added in property-modifying additive and 130 parts of water into blender successively, and flyash changes
Property fiber, property-modifying additive and dispersant are 55 DEG C in temperature, under conditions of rotating speed is 380r/min, are stirred 50min
Afterwards, Anti-pressure conducting concrete is obtained.Told cement is portland cement.The sand is the sand that mesh number is 100 mesh and mesh number is 300
Purpose sand in mass ratio 1：3 mixing gained.The dispersant is dispersant NNO.The blended wax is that polyethylene wax and carbon is former
The paraffin of subnumber 28~34 in mass ratio 2：9 mixing are to get blended wax.The paraffin is that the paraffin of carbon atom number 24~26 mixes
Object.The silane coupling agent is silane resin acceptor kh-550.
Example 2
It will（N- amidino groups）Dodecylacrylamide and polyethylene glycol-p-methyl benzenesulfonic acid ester in mass ratio 1：1 is mixed in beaker,
And the paracide and polyethylene glycol-p-methyl benzenesulfonic acid ester of polyethylene glycol -0.2 times of p-methyl benzenesulfonic acid ester quality are added into beaker
The ferrocene that 0.12 times of quality is 85 DEG C in temperature, after rotating speed is stirred 3h under conditions of being 300r/min, obtains inorganic agent；
Glass fibre is washed 5 times with absolute ethyl alcohol, and the ammonium fluoride solutions that the glass fibre after washing is 25% with mass fraction are pressed
Mass ratio 1：8 are mixed in flask, and the hydrofluoric acid that the mass fraction of 0.2 times of glass fiber quality is 20% is added into flask,
It it is 50 DEG C in temperature, after rotating speed is stirred 120min under conditions of being 300r/min, filtering obtains filter cake, and filter cake is distilled
After water washing 8 times, pretreated glass fiber is obtained, by pretreated glass fiber and water in mass ratio 1：10 mixing, and to pretreatment
In the mixture of glass fibre and water be added 0.3 times of glass fiber quality carbomer, in temperature be 60 DEG C, rotating speed 300r/
After being stirred 40min under conditions of min, pretreated glass fibre blend is obtained, the sodium hydroxide for being 15% with mass fraction is molten
After liquid adjusts the pH to 7.5 of pretreated glass fibre blend, filtering obtains pre- modified glass-fiber to get modified fibre；By carbon
As anode, copper coin is added in the nitric acid that mass fraction is 65% fiber jointly as cathode, after being electrolysed 15h, obtains pretreatment carbon fiber
Dimension, by pretreatment carbon fiber and blended wax in mass ratio 1：8 mixing, and add into pretreatment carbon fiber and the mixture of blended wax
The silane coupling agent for entering to pre-process 0.3 times of carbon fiber quality is 120 DEG C in temperature, and rotating speed stirs under conditions of being 350r/min
It after mixing 40min, filters, freezing obtains pre- modified carbon fiber, by pre- modified carbon fiber and paraffin in mass ratio 1：4 mixing, and to
The bicarbonate of 0.4 times of the inorganic agent and Quality of Paraffin Waxes of 0.3 times of Quality of Paraffin Waxes is added in the mixture of pre- modified carbon fiber and paraffin
Calcium is 45 DEG C in temperature, and after rotating speed is stirred 40min under conditions of being 300r/min, Freezing smashing obtains property-modifying additive；
It counts in parts by weight, weighs 80 parts of cement successively, 120 parts of sand, 25 parts of flyash, 8 parts of dispersants, 18 parts of modified fibres, 15 parts
By water and cement mixing in blender, and sand is added in property-modifying additive and 130 parts of water into blender successively, and flyash changes
Property fiber, property-modifying additive and dispersant are 55 DEG C in temperature, under conditions of rotating speed is 380r/min, are stirred 50min
Afterwards, Anti-pressure conducting concrete is obtained.Told cement is portland cement.The sand is the sand that mesh number is 100 mesh and mesh number is 300
Purpose sand in mass ratio 1：3 mixing gained.The dispersant is dispersant NNO.The blended wax is that polyethylene wax and carbon is former
The paraffin of subnumber 28~34 in mass ratio 2：9 mixing are to get blended wax.The paraffin is that the paraffin of carbon atom number 24~26 mixes
Object.The silane coupling agent is silane resin acceptor kh-550.
Example 3
By graphene oxide and water in mass ratio 1：180 mixing are used under conditions of frequency is 65kHZ after sonic oscillation 30min
The sodium hydroxide solution that mass fraction is 8~12% adjusts the pH to 8.5 of graphene oxide and aqueous mixtures, obtains graphene oxide
Mixture；By chitosan and water in mass ratio 1：250 mixing are 45 DEG C in temperature, under conditions of rotating speed is 300r/min, stir
After mixing 20min, the acetic acid solution for being 40% with mass fraction adjusts the pH to 4.0 of chitosan and aqueous mixtures, and it is mixed to obtain chitosan
Close liquid；It will（N- amidino groups）Dodecylacrylamide and polyethylene glycol-p-methyl benzenesulfonic acid ester in mass ratio 1：1 is mixed in beaker
In, and into beaker be added polyethylene glycol -0.2 times of p-methyl benzenesulfonic acid ester quality paracide and polyethylene glycol-to toluene sulphur
The ferrocene that 0.12 times of acid esters quality is 85 DEG C in temperature, after rotating speed is stirred 3h under conditions of being 300r/min, must handle
Agent；Glass fibre is washed 5 times with absolute ethyl alcohol, and by after washing glass fibre and mass fraction be 25% ammonium fluoride it is molten
Liquid in mass ratio 1：8 are mixed in flask, and the hydrogen that the mass fraction of 0.2 times of glass fiber quality is 20% is added into flask
Fluoric acid is 50 DEG C in temperature, and after rotating speed is stirred 120min under conditions of being 300r/min, filtering obtains filter cake, filter cake is used
After distillation water washing 8 times, pretreated glass fiber is obtained, by pretreated glass fiber and water in mass ratio 1：10 mixing, and to pre-
The carbomer that 0.3 times of glass fiber quality is added in the mixture of glass fibre and water is handled, is 60 DEG C in temperature, rotating speed is
After being stirred 40min under conditions of 300r/min, pretreated glass fibre blend is obtained, the hydrogen-oxygen for being 15% with mass fraction
After changing the pH to 7.5 that sodium solution adjusts pretreated glass fibre blend, filtering obtains pre- modified glass-fiber, by pre- modified glass
Glass fiber and graphene oxide mixture in mass ratio 1：8 mixing, after impregnating 3h under conditions of being 45 DEG C in temperature, filtering obtains 1
Secondary processing glass fibre, by 1 processing glass fibre and chitosan mixed liquor in mass ratio 1：8 mixing, in temperature be 40~50
After being impregnated under conditions of DEG C, filtering obtains 2 processing glass fibres to get modified fibre；Using carbon fiber as anode, copper coin is made
Be added jointly in the nitric acid that mass fraction is 65% for cathode, be electrolysed 15h after, obtain pretreatment carbon fiber, will pretreatment carbon fiber with
Blended wax in mass ratio 1：8 mixing, and pretreatment carbon fiber quality is added into pretreatment carbon fiber and the mixture of blended wax
0.3 times of silane coupling agent is 120 DEG C in temperature, and after rotating speed is stirred 40min under conditions of being 350r/min, filtering is cold
Freeze, pre- modified carbon fiber is obtained, by pre- modified carbon fiber and paraffin in mass ratio 1：4 mixing, and to pre- modified carbon fiber and paraffin
Mixture in be added 0.3 times of Quality of Paraffin Waxes 0.4 times of inorganic agent and Quality of Paraffin Waxes calcium bicarbonate, in temperature be 45 DEG C, turn
After speed is stirred 40min under conditions of being 300r/min, Freezing smashing obtains property-modifying additive；It counts, claims successively in parts by weight
80 parts of cement, 120 parts of sand, 25 parts of flyash, 8 parts of dispersants, 18 parts of modified fibres, 15 parts of property-modifying additives and 130 parts of water are taken,
By water and cement mixing in blender, and sand is added into blender successively, flyash, modified fibre, property-modifying additive and
Dispersant is 55 DEG C in temperature, under conditions of rotating speed is 380r/min, after being stirred 50min, obtains Anti-pressure conduction coagulation
Soil.Told cement is portland cement.The sand is the sand that mesh number is 100 mesh and the sand in mass ratio 1 that mesh number is 300 mesh：3 is mixed
Close gained.The dispersant is dispersant NNO.The blended wax is that polyethylene wax and the paraffin of carbon atom number 28~34 are pressed matter
Measure ratio 2：9 mixing are to get blended wax.The paraffin is the mineral wax mixture of carbon atom number 24~26.The silane coupling agent is
Silane resin acceptor kh-550.
Example 4
By graphene oxide and water in mass ratio 1：180 mixing are used under conditions of frequency is 65kHZ after sonic oscillation 30min
The sodium hydroxide solution that mass fraction is 8~12% adjusts the pH to 8.5 of graphene oxide and aqueous mixtures, obtains graphene oxide
Mixture；By chitosan and water in mass ratio 1：250 mixing are 45 DEG C in temperature, under conditions of rotating speed is 300r/min, stir
After mixing 20min, the acetic acid solution for being 40% with mass fraction adjusts the pH to 4.0 of chitosan and aqueous mixtures, and it is mixed to obtain chitosan
Close liquid；Glass fibre is washed 5 times with absolute ethyl alcohol, and the ammonium fluoride for being 25% with mass fraction by the glass fibre after washing
Solution in mass ratio 1：8 are mixed in flask, and it is 20% that the mass fraction of 0.2 times of glass fiber quality, which is added, into flask
Hydrofluoric acid is 50 DEG C in temperature, and after rotating speed is stirred 120min under conditions of being 300r/min, filtering obtains filter cake, by filter cake
After being washed with distilled water 8 times, pretreated glass fiber is obtained, by pretreated glass fiber and water in mass ratio 1：10 mixing, and to
The carbomer of 0.3 times of glass fiber quality is added in the mixture of pretreated glass fiber and water, is 60 DEG C in temperature, rotating speed is
After being stirred 40min under conditions of 300r/min, pretreated glass fibre blend is obtained, the hydrogen-oxygen for being 15% with mass fraction
After changing the pH to 7.5 that sodium solution adjusts pretreated glass fibre blend, filtering obtains pre- modified glass-fiber, by pre- modified glass
Glass fiber and graphene oxide mixture in mass ratio 1：8 mixing, after impregnating 3h under conditions of being 45 DEG C in temperature, filtering obtains 1
Secondary processing glass fibre, by 1 processing glass fibre and chitosan mixed liquor in mass ratio 1：8 mixing, in temperature be 40~50
After impregnating 2h under conditions of DEG C, glass fibers are handled to being added in the mixture of 1 processing glass fibre and chitosan mixed liquor 1 time
Tie up 0.2 times of quality nano zine oxide and 1 time processing 0.18 times of glass fiber quality glutaraldehyde, in temperature be 50 DEG C, rotating speed
After being stirred 40min under conditions of 300r/min, filtering obtains 2 processing glass fibres to get modified fibre；By carbon fiber
Dimension is used as anode, copper coin to be added jointly as cathode in the nitric acid that mass fraction is 65%, after being electrolysed 15h, obtains pretreatment carbon fiber
Dimension is to get property-modifying additive；It counts in parts by weight, weighs 80 parts of cement successively, 120 parts of sand, 25 parts of flyash, 8 parts of dispersants,
18 parts of modified fibres, 15 parts of property-modifying additives and 130 parts of water, by water and cement mixing in blender, and successively to blender
Middle addition sand, flyash, modified fibre, property-modifying additive and dispersant are 55 DEG C in temperature, and rotating speed is the condition of 380r/min
Under, after being stirred 50min, obtain Anti-pressure conducting concrete.Told cement is portland cement.The sand is that mesh number is 100
Purpose sand and the sand in mass ratio 1 that mesh number is 300 mesh：3 mixing gained.The dispersant is dispersant NNO.The blended wax is
By the paraffin in mass ratio 2 of polyethylene wax and carbon atom number 28~34：9 mixing are to get blended wax.The paraffin is carbon atom number
24~26 mineral wax mixture.The silane coupling agent is silane resin acceptor kh-550.
Comparative example：The conducting concrete of Changzhou building materials Co., Ltd production.
1 to 3 gained foam concrete of example and comparative example product are subjected to performance detection, specific detection method is as follows：
Test specimen is made, size is 100mm × 100mm × 160mm, and compression strength is detected with reference to JC/T1062；Electrical property uses four
Electrode method is tested, and in copper mesh Transducers Embedded in Concrete sample when molding, every group three, medial electrode is at a distance of 60mm, lateral electrode phase
Away from 120mm.Sample is placed in standard curing room and demoulds and conserve by 28 days afterwards for 24 hours, measures two inter-electrode voltages and electric current respectively, takes
Average value.Volume resistance R=U/I, resistivity are ρ=RA/L, and wherein A is cross-sectional area, and L length between two electrodes is specific to test
Numerical value is as shown in table 1；
Table 1：Compression strength and the specific testing result of resistivity
By 1 testing result of table it is found that the present invention gained foam concrete have excellent compressive property, and electric conductivity compared with
It is good.
Claims (10)
1. a kind of Anti-pressure conducting concrete, which is characterized in that be made of the raw material of following weight fraction：
50~80 parts of cement
60~120 parts of sand
20~25 parts of flyash
5~8 parts of dispersant
8~18 parts of modified fibre
10~15 parts of property-modifying additive
80~130 parts of water
The preparation method of the modified fibre is：
Glass fibre is washed 3~5 times with absolute ethyl alcohol, and by glass fibre and the ammonium fluoride solutions in mass ratio 1 after washing：
5~1：8 mixing, and the hydrofluoric acid of 0.1~0.2 times of glass fiber quality is added, it after being stirred, filters, washing must pre-process
Glass fibre, by pretreated glass fiber and water in mass ratio 1：8~1：10 mixing, and glass fiber quality 0.2~0.3 is added
Carbomer again after being stirred, adjusts pH to neutrality, filtering obtains pre- modified glass-fiber, by pre- modified glass-fiber and oxygen
Graphite alkene mixture in mass ratio 1：5~1：8 mixing, impregnate filtering, obtain 1 processing glass fibre, glass fibers are handled by 1 time
Dimension and chitosan mixed liquor in mass ratio 1：5~1：After 8 mixing are impregnated, and 1 processing glass fiber quality 0.1~0.2 is added
The glutaraldehyde of nano zine oxide again and 1 0.08~0.18 times of glass fiber quality of processing, after being stirred, filtering obtains 2 times
Glass fibre is handled to get modified fibre；
The preparation method of the property-modifying additive is：
Using carbon fiber as anode, copper coin is added in nitric acid jointly as cathode, after being electrolysed 10~15h, obtains pretreatment carbon fiber,
It will pretreatment carbon fiber and blended wax in mass ratio 1：4~1：8 mixing, and 0.1~0.3 times of pretreatment carbon fiber quality is added
Silane coupling agent, after being stirred, is filtered, and freezing obtains pre- modified carbon fiber, by pre- modified carbon fiber and paraffin in mass ratio 1：
3~1：4 mixing, and the calcium bicarbonate of 0.3~0.4 times of the inorganic agent and Quality of Paraffin Waxes of 0.2~0.3 times of Quality of Paraffin Waxes is added, it stirs
Mixing is mixed, Freezing smashing obtains property-modifying additive.
2. a kind of Anti-pressure conducting concrete according to claim 1, it is characterised in that：The cement is portland cement
Or any one in aluminate cement.
3. a kind of Anti-pressure conducting concrete according to claim 1, it is characterised in that：The sand is that mesh number is 100 mesh
Sand and mesh number be 300 mesh sand in mass ratio 1：2~1：3 mixing gained.
4. a kind of Anti-pressure conducting concrete according to claim 1, it is characterised in that：The dispersant is dispersant
Any one in NNO, Dispersant MF or dispersant 5040.
5. a kind of Anti-pressure conducting concrete according to claim 1, it is characterised in that：The graphene oxide mixture
Preparation method be by graphene oxide and water in mass ratio 1：100~1：180 mix, after sonic oscillation, adjusting pH to 7.5~
8.5, obtain graphene oxide mixture.
6. a kind of Anti-pressure conducting concrete according to claim 1, it is characterised in that：The system of the chitosan mixed liquor
Preparation Method is by chitosan and water in mass ratio 1：200~1：250 mixing, and after adjusting pH to 3.0~4.0, it is mixed to obtain chitosan
Close liquid.
7. a kind of Anti-pressure conducting concrete according to claim 1, it is characterised in that：The blended wax is by polyethylene
The paraffin in mass ratio 2 of wax and carbon atom number 25~35：7~2：9 mixing are to get blended wax.
8. a kind of Anti-pressure conducting concrete according to claim 1, it is characterised in that：The paraffin is carbon atom number 22
~28 mineral wax mixture.
9. a kind of Anti-pressure conducting concrete according to claim 1, it is characterised in that：The silane coupling agent is silane
Any one in coupling agent KH-550, silane coupling agent KH-560 or Silane coupling reagent KH-570.
10. a kind of Anti-pressure conducting concrete according to claim 1, it is characterised in that：The preparation side of the inorganic agent
Method is will（N- amidino groups）Dodecylacrylamide and polyethylene glycol-p-methyl benzenesulfonic acid ester in mass ratio 2：1~1：1 mixing, and
The paracide and polyethylene glycol-p-methyl benzenesulfonic acid ester quality of polyethylene glycol -0.1~0.2 times of p-methyl benzenesulfonic acid ester quality is added
0.08~0.12 times of ferrocene, is stirred, and obtains inorganic agent.
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| CN112279578A (en) * | 2020-11-26 | 2021-01-29 | 杭州易佰新材料科技有限公司 | Crack-resistant reinforced concrete for building and preparation method thereof |
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