CN108046711A - A kind of preparation method of conducting concrete - Google Patents
A kind of preparation method of conducting concrete Download PDFInfo
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- CN108046711A CN108046711A CN201711491778.7A CN201711491778A CN108046711A CN 108046711 A CN108046711 A CN 108046711A CN 201711491778 A CN201711491778 A CN 201711491778A CN 108046711 A CN108046711 A CN 108046711A
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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
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
-
- 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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- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
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- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of preparation methods of conducting concrete, belong to building material technical field.It counts in parts by weight, weighs 100~150 parts of cement, 60~80 parts of sand, 30~40 parts of modified vitrification micro-beads, 20~25 parts of modified zeolites, 5~10 parts of conductive fibers, 5~8 parts of dispersants and 60~80 parts of water successively；Cement and sand are mixed in mixer, and add in water into mixer successively, modified zeolite; modified vitrification micro-bead, conductive fiber and dispersant, in temperature be 35~45 DEG C; under conditions of rotating speed is 200~250r/min, after being stirred 40~80min, mixture is obtained; it injects a mixture into mold; after spontaneously drying 3~5 days under room temperature, the demoulding obtains blank; by blank in temperature for after nourishment under conditions of 75~85 DEG C 1~2 day to get conducting concrete.Gained conducting concrete of the invention has excellent electric conductivity and mechanical property.
Description
Technical field
The invention discloses a kind of preparation methods of conducting concrete, belong to building material technical field.
Background technology
Concrete is the construction material that a kind of dosage is maximum, purposes is most wide, and people are to its intensity, durability, deformation
Etc. the main performances of terms of mechanics carried out more careful research, and its electric property generally has no much passes with mechanical property
System, therefore be not also just valued by the people.
The resistivity of normal concrete is generally 105~108In the range of Ω cm, insulator is both not belonging to, is also not belonging to good
Conductor.It if adding a certain amount of conductive materials in concrete, can substantially improve the electric conductivity of concrete block, so as to have
The electric conductor of preferable electric conductivity, such just create condition for application of the concrete in terms of electricity.
Conducting concrete because it is conductive can, and do not lose an incision technology of concrete and the advantage in performance again and in crowd
It is multi-field to have huge potential application foreground.At present, conducting concrete has a wide range of applications field：It can both substitute gold
Belong to, play the role of shielding radio interference, defence electromagnetic wave；Electrical material is can serve as again, as earthing or grounding means, building are kept away
Thunder equipment, the switching-on resistance of breaker, elimination electrostatic equipment, metallic cathode protection system etc.；Conductive generation can also be utilized
Fuel factor carries out the melting ice and snow on environment heating, building and heating and road and airport；At the same time it can also utilize its power-electricity
A kind of alert and resourceful intellectual material is made in correlation properties, the non-damaged inspection and evaluation available for concrete structure, it can also be used to public at a high speed
The automatic monitoring on road, the weight weighing of moving vehicle, large scale structure（Such as nuclear power station facility, dam）Micro-crack monitoring etc..But
It is that conventional conductive concrete also needs to study it also there are the problem of mechanical property and bad electric conductivity.
The content of the invention
The present invention solves the technical problem of：It is bad for conventional conductive mechanical performance of concrete and electric conductivity
Problem 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 conducting concrete is made of the raw material of following parts by weight：
100~150 parts of cement
60~80 parts of sand
30~40 parts of modified vitrification micro-bead
20~25 parts of modified zeolite
5~10 parts of conductive fiber
5~8 parts of dispersant
60~80 parts of water
The preparation method of the modified vitrification micro-bead is：
By glass bead and hydrofluoric acid in mass ratio 1：3~1：5 mixing are impregnated, and are filtered, dry, obtain pretreatment glass bead, will
Pre-process glass bead and dimethyl sulfoxide (DMSO) in mass ratio 1：5~1：8 mixing, and add in 2~3 times of pretreatment glass bead quality
N '-cetyl-N, N- dimethyl ethyl amidine, after being stirred, filtering, single treatment glass bead is obtained, by single treatment
Glass bead and paraffin in mass ratio 1：3~1：5 mixing, and add in the carbonic acid of 0.2~0.5 times of single treatment glass bead quality
Hydrogen calcium, after being stirred, Freezing smashing obtains modified vitrification micro-bead；
The preparation method of the modified zeolite is：
It will pretreatment zeolite and water in mass ratio 1：8~1：10 mixing, and add in the mixing gold of 2~3 times of pretreatment zeolite quality
Belong to powder, after sonic oscillation, filter, it is dry, pre- modified zeolite is obtained, by pre- modified zeolite and vaseline in mass ratio 1：5~1：8
Mixing, and the graphite oxide of pre- 0.5~0.9 times of modified zeolite quality is added in, after being stirred, obtain modified zeolite；
The preparation method of the conducting concrete is：
（1）It is formed by raw material and weighs each component；
（2）Cement with sand is mixed, and sequentially adds water, modified zeolite, modified vitrification micro-bead, conductive fiber and dispersant stir
After mixing mixing, mixture is obtained, is injected a mixture into mold, after spontaneously drying 3~5 days, the demoulding obtains blank, and blank is artificial
After maintenance 1~2 day, conducting concrete is obtained.
The cement is portland cement, any one in aluminate cement or sulphate aluminium cement.
The sand is river sand, any one in lake sand or sea sand.
The conductive fiber is any one in carbon fiber or steel fibre.
The dispersant is dispersant NNO, any one in Dispersant MF or dispersant 5040.
The glass bead grain size is 2~5mm.
The paraffin is mineral wax mixture of the carbon number between 20~26.
The preparation method of the pretreatment zeolite crosses 120~200 mesh sieves, obtains refinement zeolite, will refine for zeolite is crushed
After zeolite moves into 2~5h of calcining furnace calcining, pretreatment zeolite is obtained.
The preparation method of the mixed metal powder is in iron powder in mass ratio 1 by copper powders：1~1：2 are stirred,
Up to mixed metal powder.
The beneficial effects of the invention are as follows：
（1）The present invention adds in modified vitrification micro-bead when preparing conducting concrete, on the one hand, glass bead is light and with good
Mechanical property, after adding in conducting concrete system, can be improved the mechanical property of product, and glass bead exists
Contain the dimethyl sulphoxide solution of N '-cetyl-N, N- dimethyl ethyl amidine by modified inside, in absorbing carbon dioxide
The dimethyl sulphoxide solution of N '-cetyl-N, N- dimethyl ethyl amidine has good electrical conductivity afterwards, so that the electricity of product
Conductance improves, and for another aspect glass bead by modified descendant, one layer of paraffin layer with calcium bicarbonate is contained on surface, is adding
After entering in system, paraffin layer can melt during hydrated cementitious and nourishment, and the paraffin of thawing can reduce each object in system
Resistance between matter, so as to when glass bead be uniformly distributed in system, the calcium bicarbonate after thawing in paraffin is thermally decomposed, generate
Gas, water and calcium carbonate, gas can be that the dimethyl sulphoxide solution of N '-cetyl-N, N- dimethyl ethyl amidine provides dioxy
Change carbon, water can promote hydrated cementitious, and calcium carbonate can filling product gap so that the electric conductivity and mechanical property of product into
One step improves；
（2）The present invention adds in modified zeolite when preparing conducting concrete, and first, by modified, inside deposited zeolite
Metal powder so that zeolite electric conductivity improves, and then improves the electric conductivity of product, and secondly, zeolite surface contains vaseline,
And contain graphite oxide in vaseline, in modified zeolite addition system after, in hydration process, vaseline partial melting, and
It carries graphite oxide to migrate to system surface, so that the electric conductivity of product improves, the vaseline completely not melted can make boiling
Stone is uniformly distributed in system, so that the mechanical property of product and electric conductivity further improve.
Specific embodiment
By glass bead and the hydrofluoric acid in mass ratio 1 of mass fraction 5~15%：3~1：5 are mixed in reaction kettle, in room
After impregnating 2~3h under temperature state, filtering obtains filter cake, filter cake is moved into drying box, permanent under conditions of temperature is 90~100 DEG C
After the dry 45~60min of temperature, pretreatment glass bead is obtained, by pretreatment glass bead and dimethyl sulfoxide (DMSO) in mass ratio 1：5~
1：8 mixing, and 2~3 times of pretreatment glass bead quality is added in into the mixture of pretreatment glass bead and dimethyl sulfoxide (DMSO)
N '-cetyl-N, N- dimethyl ethyl amidine, in temperature be 45~65 DEG C, rotating speed be 300~380r/min under conditions of stir
After mixing 45~80min of mixing, filtering obtains single treatment glass bead, by single treatment glass bead and paraffin in mass ratio 1：3
~1：5 are mixed in beaker, and the calcium bicarbonate of 0.2~0.5 times of single treatment glass bead quality, Yu Wen are added in into beaker
It spends for 35~55 DEG C, under conditions of rotating speed is 220~300r/min, after being stirred 25~55min, Freezing smashing obtains modification
Glass bead；It will pretreatment zeolite and water in mass ratio 1：8~1：10 are mixed in flask, and pretreatment boiling is added in into flask
Flask is moved into sonic oscillation instrument by the mixed metal powder that 2~3 times of stone quality, is ultrasonic under conditions of 55~65kHz in frequency
After vibrating 20~25min, filtering obtains filter residue, filter residue is moved into drying box, the freeze-day with constant temperature under conditions of temperature is 80~90 DEG C
After 45~60min, pre- modified zeolite is obtained, by pre- modified zeolite and vaseline in mass ratio 1：5~1：8 mixing, and add in and change in advance
The graphite oxide of 0.5~0.9 times of property zeolite quality, after being stirred, obtains modified zeolite；It counts in parts by weight, weighs 100 successively
~150 parts of cement, 60~80 parts of sand, 30~40 parts of modified vitrification micro-beads, 20~25 parts of modified zeolites, 5~10 parts of conductive fibers,
5~8 parts of dispersants and 60~80 parts of water；Cement and sand are mixed in mixer, and add in water into mixer successively, it is modified
Zeolite, modified vitrification micro-bead, conductive fiber and dispersant are 35~45 DEG C in temperature, and rotating speed is the condition of 200~250r/min
Under, after being stirred 40~80min, mixture is obtained, is injected a mixture into mold, in natural drying 3~5 days under room temperature
Afterwards, demould, obtain blank, by blank in temperature for after nourishment under conditions of 75~85 DEG C 1~2 day to get conducting concrete.
The cement is portland cement, any one in aluminate cement or sulphate aluminium cement.The sand is river sand, lake sand or sea
Any one in sand.The conductive fiber is any one in carbon fiber or steel fibre.The dispersant is dispersant NNO, point
Any one in powder MF or dispersant 5040.The glass bead grain size is 2~5mm.The paraffin is carbon number 20
Mineral wax mixture between~26.The preparation method of the pretreatment zeolite is crossed 120~200 mesh sieves, is obtained carefully for zeolite is crushed
Change zeolite, after refinement zeolite is moved into 2~5h of calcining furnace calcining, obtain pretreatment zeolite.The preparation side of the mixed metal powder
Method is in iron powder in mass ratio 1 by copper powders：1~1：2 are stirred to get mixed metal powder.
Example 1
By glass bead and the hydrofluoric acid in mass ratio 1 of mass fraction 15%：5 are mixed in reaction kettle, are impregnated under room temperature state
After 3h, filtering obtains filter cake, filter cake is moved into drying box, under conditions of temperature is 100 DEG C, after freeze-day with constant temperature 60min, obtains pre-
Glass bead is handled, by pretreatment glass bead and dimethyl sulfoxide (DMSO) in mass ratio 1：8 mixing, and to pretreatment glass bead with
N '-cetyl-N, N- dimethyl ethyl amidine of 3 times of pretreatment glass bead quality is added in the mixture of dimethyl sulfoxide (DMSO),
It it is 65 DEG C in temperature, after rotating speed is stirred 80min under conditions of being 380r/min, filtering obtains single treatment glass bead, will
Single treatment glass bead and paraffin in mass ratio 1：5 are mixed in beaker, and single treatment glass bead is added in into beaker
The calcium bicarbonate that 0.5 times of quality is 55 DEG C in temperature, under conditions of rotating speed is 300r/min, after being stirred 55min, freezes
It crushes, obtains modified vitrification micro-bead；It will pretreatment zeolite and water in mass ratio 1：10 are mixed in flask, and are added in advance into flask
The mixed metal powder of 3 times of zeolite quality is handled, flask is moved into sonic oscillation instrument, is ultrasonic under conditions of 65kHz in frequency
After vibrating 25min, filtering obtains filter residue, filter residue is moved into drying box, under the conditions of at a temperature of 90 °C after freeze-day with constant temperature 60min,
Pre- modified zeolite is obtained, by pre- modified zeolite and vaseline in mass ratio 1：8 mixing, and add in pre- 0.9 times of modified zeolite quality
Graphite oxide after being stirred, obtains modified zeolite；It counts in parts by weight, weighs 150 parts of cement, 80 parts of sand, 40 parts of modifications successively
Glass bead, 25 parts of modified zeolites, 10 parts of conductive fibers, 8 parts of dispersants and 80 parts of water；Cement and sand are mixed in mixer
In, and water is added in into mixer successively, modified zeolite, modified vitrification micro-bead, conductive fiber and dispersant, in temperature be 45
DEG C, under conditions of rotating speed is 250r/min, after being stirred 80min, mixture is obtained, is injected a mixture into mold, in room temperature
Under the conditions of spontaneously dry 5 days after, the demoulding obtains blank, by blank in temperature for after nourishment under conditions of 85 DEG C 2 days to get
Conducting concrete.The cement is portland cement.The sand is river sand.The conductive fiber is carbon fiber.The dispersant
For dispersant NNO.The glass bead grain size is 5mm.The paraffin is mineral wax mixture of the carbon number 26.The pre- place
The preparation method of reason zeolite crosses 200 mesh sieves, obtains refinement zeolite, refinement zeolite is moved into calcining furnace calcining 5h for zeolite is crushed
Afterwards, pretreatment zeolite is obtained.The preparation method of the mixed metal powder is in iron powder in mass ratio 1 by copper powders：2 stirrings are mixed
It closes to get mixed metal powder.
Example 2
By glass bead and the hydrofluoric acid in mass ratio 1 of mass fraction 15%：5 are mixed in reaction kettle, are impregnated under room temperature state
After 3h, filtering obtains filter cake, filter cake is moved into drying box, under conditions of temperature is 100 DEG C, after freeze-day with constant temperature 60min, obtains pre-
Glass bead is handled, by pretreatment glass bead and dimethyl sulfoxide (DMSO) in mass ratio 1：8 mixing, and to pretreatment glass bead with
N '-cetyl-N, N- dimethyl ethyl amidine of 3 times of pretreatment glass bead quality is added in the mixture of dimethyl sulfoxide (DMSO),
It it is 65 DEG C in temperature, after rotating speed is stirred 80min under conditions of being 380r/min, filtering obtains single treatment glass bead, will
Single treatment glass bead and paraffin in mass ratio 1：5 are mixed in beaker, and single treatment glass bead is added in into beaker
The calcium bicarbonate that 0.5 times of quality is 55 DEG C in temperature, under conditions of rotating speed is 300r/min, after being stirred 55min, freezes
It crushes, obtains modified vitrification micro-bead；It counts in parts by weight, weighs 150 parts of cement successively, 80 parts of sand, 40 parts of modified vitrification micro-beads, 25
Part zeolite, 10 parts of conductive fibers, 8 parts of dispersants and 80 parts of water；Cement and sand are mixed in mixer, and successively to mixer
Middle addition water, zeolite, modified vitrification micro-bead, conductive fiber and dispersant are 45 DEG C in temperature, and rotating speed is the condition of 250r/min
Under, after being stirred 80min, mixture is obtained, is injected a mixture into mold, after spontaneously drying 5 days under room temperature, is taken off
Mould obtains blank, by blank in temperature for after nourishment under conditions of 85 DEG C 2 days to get conducting concrete.The cement is silicon
Acid salt cement.The sand is river sand.The conductive fiber is carbon fiber.The dispersant is dispersant NNO.The glass bead
Grain size is 5mm.The paraffin is mineral wax mixture of the carbon number 26.The preparation method of the mixed metal powder is by copper
Powder is in iron powder in mass ratio 1：2 are stirred to get mixed metal powder.
Example 3
By glass bead and paraffin in mass ratio 1：5 are mixed in beaker, and 0.5 times of glass bead quality is added in into beaker
Calcium bicarbonate is 55 DEG C in temperature, and under conditions of rotating speed is 300r/min, after being stirred 55min, Freezing smashing obtains modification
Glass bead；It will pretreatment zeolite and water in mass ratio 1：10 are mixed in flask, and pretreatment zeolite matter is added in into flask
Flask is moved into sonic oscillation instrument by the mixed metal powder of 3 times of amount, the sonic oscillation 25min under conditions of frequency is 65kHz
Afterwards, filter, obtain filter residue, filter residue is moved into drying box, under the conditions of at a temperature of 90 °C after freeze-day with constant temperature 60min, obtain pre- modification
Zeolite, by pre- modified zeolite and vaseline in mass ratio 1：8 mixing, and the graphite oxide of pre- 0.9 times of modified zeolite quality is added in,
After being stirred, modified zeolite is obtained；It counts in parts by weight, weighs 150 parts of cement successively, 80 parts of sand, 40 parts of modified vitrification micro-beads,
25 parts of modified zeolites, 10 parts of conductive fibers, 8 parts of dispersants and 80 parts of water；Cement and sand are mixed in mixer, and successively to
Water, modified zeolite, modified vitrification micro-bead, conductive fiber and dispersant are added in mixer, is 45 DEG C in temperature, rotating speed is
Under conditions of 250r/min, after being stirred 80min, mixture is obtained, is injected a mixture into mold, in natural under room temperature
After dry 5 days, the demoulding obtains blank, by blank under conditions of temperature is 85 DEG C after nourishment 2 days to get conducting concrete.
The cement is portland cement.The sand is river sand.The conductive fiber is carbon fiber.The dispersant is dispersant NNO.
The glass bead grain size is 5mm.The paraffin is mineral wax mixture of the carbon number 26.The preparation of the pretreatment zeolite
Method crosses 200 mesh sieves, obtains refinement zeolite, after refinement zeolite is moved into calcining furnace calcining 5h, must pre-process boiling for zeolite is crushed
Stone.The preparation method of the mixed metal powder is in iron powder in mass ratio 1 by copper powders：2 are stirred to get mixing gold
Belong to powder.
Example 4
By glass bead and the hydrofluoric acid in mass ratio 1 of mass fraction 15%：5 are mixed in reaction kettle, are impregnated under room temperature state
After 3h, filtering obtains filter cake, filter cake is moved into drying box, under conditions of temperature is 100 DEG C, after freeze-day with constant temperature 60min, obtains pre-
Glass bead is handled, by pretreatment glass bead and dimethyl sulfoxide (DMSO) in mass ratio 1：8 mixing, and to pretreatment glass bead with
N '-cetyl-N, N- dimethyl ethyl amidine of 3 times of pretreatment glass bead quality is added in the mixture of dimethyl sulfoxide (DMSO),
It it is 65 DEG C in temperature, after rotating speed is stirred 80min under conditions of being 380r/min, filtering obtains single treatment glass bead；It will
Pre-process zeolite and water in mass ratio 1：10 are mixed in flask, and the mixing of 3 times of pretreatment zeolite quality is added in into flask
Flask is moved into sonic oscillation instrument by metal powder, and after frequency is sonic oscillation 25min under conditions of 65kHz, filtering must filter
Filter residue is moved into drying box by slag, under the conditions of at a temperature of 90 °C after freeze-day with constant temperature 60min, pre- modified zeolite is obtained, by pre- modification
Zeolite and vaseline in mass ratio 1：8 mixing, and the graphite oxide of pre- 0.9 times of modified zeolite quality is added in, after being stirred, obtain
Modified zeolite；It counts in parts by weight, weighs 150 parts of cement, 80 parts of sand, 40 parts of single treatment glass beads, 25 parts of modifications successively
Zeolite, 10 parts of conductive fibers, 8 parts of dispersants and 80 parts of water；Cement and sand are mixed in mixer, and successively into mixer
Add in water, modified zeolite, single treatment glass bead, conductive fiber and dispersant, in temperature be 45 DEG C, rotating speed 250r/min
Under conditions of, after being stirred 80min, mixture is obtained, is injected a mixture into mold, in natural drying 5 days under room temperature
Afterwards, demould, obtain blank, by blank in temperature for after nourishment under conditions of 85 DEG C 2 days to get conducting concrete.The water
Mud is portland cement.The sand is river sand.The conductive fiber is carbon fiber.The dispersant is dispersant NNO.The glass
It is 5mm to change microballon grain size.The paraffin is mineral wax mixture of the carbon number 26.It is described pretreatment zeolite preparation method be
Zeolite is crushed, 200 mesh sieves is crossed, obtains refinement zeolite, after refinement zeolite is moved into calcining furnace calcining 5h, obtains pretreatment zeolite.Institute
The preparation method for stating mixed metal powder is in iron powder in mass ratio 1 by copper powders：2 are stirred to get mixed metal powder
End.
Comparative example：The conducting concrete of Shanghai building materials Co., Ltd production.
1 to 4 gained conducting concrete of example and comparative example product are subjected to performance detection, specific detection method is as follows：
1. mechanical property：Specimen molding and strength character test are carried out according to GB/T17671, every group of three pieces of test specimens, sample dimensions
For 40mm × 40mm × 160mm；Shaping is poured, after test block is carried out standard curing, surveys its compression strength and flexural strength；
2. electric conductivity：It is tested using four electrode method, specimen molding is carried out according to GB/T17671, and after standard curing, detects it
Resistance and resistivity.Resistance（R）Calculation formula is according to formula（1）
R=U/I （1）
Resistivity（ρ）Calculation formula is according to formula（2）
ρ=R·S/L
In formula, U：Applied voltage, V；
I：Electric current, A；R：Test specimen resistance, Ω；S：Test specimen area of section, m2；L：Piece lengths.
Specific testing result is as shown in table 1：
Table 1
| Detection content | Example 1 | Example 2 | Example 3 | Example 4 | Comparative example |
| Compression strength/MPa | 54.4 | 45.7 | 44.8 | 44.2 | 33.5 |
| Flexural strength/MPa | 9.9 | 7.6 | 6.5 | 6.7 | 3.23 |
| Resistivity/（Ω·m） | 1.09 | 3.45 | 4.13 | 4.47 | 8.76 |
From 1 testing result of table, present invention gained conducting concrete has excellent electric conductivity and mechanical property.
Claims (9)
1. a kind of conducting concrete, it is characterised in that：It is made of the raw material of following parts by weight：
100~150 parts of cement
60~80 parts of sand
30~40 parts of modified vitrification micro-bead
20~25 parts of modified zeolite
5~10 parts of conductive fiber
5~8 parts of dispersant
60~80 parts of water
The preparation method of the modified vitrification micro-bead is：
By glass bead and hydrofluoric acid in mass ratio 1：3~1：5 mixing are impregnated, and are filtered, dry, obtain pretreatment glass bead, will
Pre-process glass bead and dimethyl sulfoxide (DMSO) in mass ratio 1：5~1：8 mixing, and add in 2~3 times of pretreatment glass bead quality
N '-cetyl-N, N- dimethyl ethyl amidine, after being stirred, filtering, single treatment glass bead is obtained, by single treatment
Glass bead and paraffin in mass ratio 1：3~1：5 mixing, and add in the carbonic acid of 0.2~0.5 times of single treatment glass bead quality
Hydrogen calcium, after being stirred, Freezing smashing obtains modified vitrification micro-bead；
The preparation method of the modified zeolite is：
It will pretreatment zeolite and water in mass ratio 1：8~1：10 mixing, and add in the mixing gold of 2~3 times of pretreatment zeolite quality
Belong to powder, after sonic oscillation, filter, it is dry, pre- modified zeolite is obtained, by pre- modified zeolite and vaseline in mass ratio 1：5~1：8
Mixing, and the graphite oxide of pre- 0.5~0.9 times of modified zeolite quality is added in, after being stirred, obtain modified zeolite；
The preparation method of the conducting concrete is：
（1）It is formed by raw material and weighs each component；
（2）Cement with sand is mixed, and sequentially adds water, modified zeolite, modified vitrification micro-bead, conductive fiber and dispersant stir
After mixing mixing, mixture is obtained, is injected a mixture into mold, after spontaneously drying 3~5 days, the demoulding obtains blank, and blank is artificial
After maintenance 1~2 day, conducting concrete is obtained.
2. a kind of conducting concrete according to claim 1, it is characterised in that：The cement be portland cement, aluminic acid
Any one in salt cement or sulphate aluminium cement.
3. a kind of conducting concrete according to claim 1, it is characterised in that：The sand is river sand, in lake sand or sea sand
Any one.
4. a kind of conducting concrete according to claim 1, it is characterised in that：The conductive fiber is fine for carbon fiber or steel
Any one in dimension.
5. a kind of conducting concrete according to claim 1, it is characterised in that：The dispersant is dispersant NNO, is disperseed
Any one in agent MF or dispersant 5040.
6. a kind of conducting concrete according to claim 1, it is characterised in that：The glass bead grain size is 2~5mm.
7. a kind of conducting concrete according to claim 1, it is characterised in that：The paraffin is carbon number 20~26
Between mineral wax mixture.
8. a kind of conducting concrete according to claim 1, it is characterised in that：It is described pretreatment zeolite preparation method be
Zeolite is crushed, 120~200 mesh sieves is crossed, obtains refinement zeolite, after refinement zeolite is moved into 2~5h of calcining furnace calcining, must be pre-processed
Zeolite.
9. a kind of conducting concrete according to claim 1, it is characterised in that：The preparation method of the mixed metal powder
For by copper powders in iron powder in mass ratio 1：1~1：2 are stirred to get mixed metal powder.
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