CN109809749A - A kind of construction method of graphite alkenes cement-base composite material - Google Patents
A kind of construction method of graphite alkenes cement-base composite material Download PDFInfo
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- CN109809749A CN109809749A CN201910260782.5A CN201910260782A CN109809749A CN 109809749 A CN109809749 A CN 109809749A CN 201910260782 A CN201910260782 A CN 201910260782A CN 109809749 A CN109809749 A CN 109809749A
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- cement
- graphite alkenes
- graphite
- auxiliary agent
- composite material
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- 239000002131 composite material Substances 0.000 title claims abstract description 94
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 93
- 239000010439 graphite Substances 0.000 title claims abstract description 93
- -1 graphite alkenes Chemical class 0.000 title claims abstract description 83
- 238000010276 construction Methods 0.000 title claims abstract description 55
- 239000004568 cement Substances 0.000 claims abstract description 146
- 239000000463 material Substances 0.000 claims abstract description 90
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 61
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 47
- 239000000945 filler Substances 0.000 claims abstract description 47
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 44
- 238000002156 mixing Methods 0.000 claims abstract description 24
- 238000012423 maintenance Methods 0.000 claims abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 81
- 229910021389 graphene Inorganic materials 0.000 claims description 70
- 235000017060 Arachis glabrata Nutrition 0.000 claims description 53
- 241001553178 Arachis glabrata Species 0.000 claims description 53
- 235000010777 Arachis hypogaea Nutrition 0.000 claims description 53
- 235000018262 Arachis monticola Nutrition 0.000 claims description 53
- 235000020232 peanut Nutrition 0.000 claims description 53
- 239000002002 slurry Substances 0.000 claims description 32
- 238000003756 stirring Methods 0.000 claims description 20
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 18
- 238000000227 grinding Methods 0.000 claims description 14
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 150000001336 alkenes Chemical class 0.000 claims description 8
- 238000005979 thermal decomposition reaction Methods 0.000 claims description 8
- 238000000197 pyrolysis Methods 0.000 claims description 5
- 239000006185 dispersion Substances 0.000 claims description 3
- 239000004615 ingredient Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000011257 shell material Substances 0.000 description 47
- 238000000498 ball milling Methods 0.000 description 8
- 239000002270 dispersing agent Substances 0.000 description 8
- 238000001035 drying Methods 0.000 description 7
- 238000000465 moulding Methods 0.000 description 7
- 239000003638 chemical reducing agent Substances 0.000 description 6
- 239000008187 granular material Substances 0.000 description 6
- 239000002893 slag Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 239000004088 foaming agent Substances 0.000 description 4
- 230000010355 oscillation Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000012163 sequencing technique Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000002518 antifoaming agent Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000006277 sulfonation reaction Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 239000004604 Blowing Agent Substances 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000009210 therapy by ultrasound Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Abstract
The present invention provides a kind of construction methods of graphite alkenes cement-base composite material.The construction method, which can comprise the following steps that, to be mixed for cement, the graphite alkenes material of 1:0.01~1 by mass ratio, grinds, and graphite alkenes cement disperse materials are obtained；It is that 1:0.3~0.5:0.001~0.02:2~5 graphite alkenes cement disperse materials, water, auxiliary agent and filler are mixed and stirred for uniformly, obtaining composite mortar by mass ratio, cement can be also added during preparing composite mortar；The composite mortar is injected into mold, is conserved so that graphite alkenes cement-base composite material forms.The beneficial effect comprise that can guarantee each ingredient of graphite alkenes cement composite material and uniformly mixing；It can reduce site operation difficulty, improve staff's construction efficiency；Equipment and its operation and maintenance cost can be effectively reduced, to reduce cost.
Description
Technical field
The present invention relates to cement-base composite material fields, particularly, are related to a kind of graphite alkenes cement-base composite material
Construction method.
Background technique
Cement-base composite material is widely used material in building trade, and research improves its performance with highly important
Meaning.Studies have shown that many-sided performance that original material can be improved is added in cement-base composite material in grapheme material, such as
Compressive property can be promoted to 25%, fracture resistance and be improved close to 20% etc..But grapheme material is in the reality of cement composite material
In the application of border, construction is more troublesome and the two is not easy to be uniformly mixed, so as to cause grapheme material to cement composite material most
Whole performance boost is unobvious.If grapheme material can even play opposite effect in cement without uniformly dispersing.
Summary of the invention
For the deficiencies in the prior art, it is an object of the invention to solve above-mentioned one existing in the prior art
Or multiple problems.For example, can guarantee construction quality again one of the objects of the present invention is to provide one kind can reduce construction
The construction method of the graphite alkenes cement-base composite material of cost.
To achieve the goals above, one aspect of the present invention provides a kind of construction party of graphite alkenes cement-base composite material
Method.The construction method the following steps are included: by mass ratio be the cement of 1:0.01~1, graphite alkenes material mix, grinding,
Obtain graphite alkenes cement disperse materials；It is 1:0.3~0.5:0.001~0.02:2~5 graphite alkenes water by mass ratio
Mud disperse materials, water, auxiliary agent and filler are mixed and stirred for uniformly, obtaining composite mortar；The composite mortar is conserved, so that
The molding of graphite alkenes cement-base composite material.
An exemplary embodiment according to the present invention, described the step of obtaining composite mortar can include: by graphite alkenes
Cement disperse materials, water are mixed and stirred for uniformly, obtaining cement slurry；The cement slurry is mixed simultaneously with the auxiliary agent, filler
It stirs evenly, obtains the composite mortar.
An exemplary embodiment according to the present invention, the water include the first water body and the second water body, the auxiliary agent packet
The first auxiliary agent and the second auxiliary agent are included, the filler includes the first filler and the second filler, and described the step of obtaining composite mortar can
Include: by least one of the first auxiliary agent and the first filler with the graphite alkenes cement disperse materials, the first water mixing simultaneously
It stirs evenly, obtains cement slurry；By at least one of the second auxiliary agent, the second filler and second water body and the cement slurry
It is mixed and stirred for uniformly, obtaining composite mortar.
Another aspect of the present invention also provides a kind of construction method of black alkenes cement-base composite material.The construction method
It can comprise the following steps that and the first cement that mass ratio is 1:0.01~1 is mixed with graphite alkenes material, is ground, obtain graphite
Alkenes cement disperse materials；By the graphite alkenes cement disperse materials, water, auxiliary agent, filler and the second cement mixing and stir evenly,
Obtain composite mortar；The composite mortar is conserved so that graphite alkenes cement-base composite material forms.
An exemplary embodiment according to the present invention, the water may include the first water body and the second water body, the auxiliary agent
Including the first auxiliary agent and the second auxiliary agent, the filler may include the first filler and the second filler, the step for obtaining composite mortar
Suddenly can include: mix at least one of the first auxiliary agent and the first filler and the graphite alkenes cement disperse materials, the first water body
Merging stirs evenly, and obtains cement slurry；By at least one of the second auxiliary agent, the second filler and second water body and the cement
Slurry, the second cement mixing simultaneously stir evenly, and obtain composite mortar.
An exemplary embodiment according to the present invention, the graphite alkenes material may include expanded graphite, graphite oxide
At least one of alkene and graphene.
An exemplary embodiment according to the present invention, the graphene include peanut shell graphene, the peanut shell stone
The water content of black alkene can be 1% hereinafter, even can be below 0.1%.
An exemplary embodiment according to the present invention, the peanut shell cement may include preparing in accordance with the following methods
Graphene: peanut shell powder, potassium hydroxide and water that mass ratio is 1:0.5~2:0.5~2 are mixed, is then dried, obtains
To desciccate；The desciccate is subjected to high temperature pyrolysis, obtains thermal decomposition product；The thermal decomposition product is placed in sulfuric acid solution
In, it is ultrasonically treated, then filters, is dry, obtaining peanut shell graphene.
An exemplary embodiment according to the present invention, the partial size of the graphite alkenes cement disperse materials can be 1~50 μm,
Such as 30 ± 10 μm.
An exemplary embodiment according to the present invention, the method may further comprise the step of: before maintenance, will be described multiple
It closes slurry injection mold simultaneously to be vibrated, by cement slurry ram-jolt bubble removing side by side in a mold.
Compared with prior art, beneficial effects of the present invention can include: can guarantee the graphite alkenes cement composite material
Each ingredient and uniformly mixing；It can guarantee that graphite alkenes material promotes composite material combination property；It can reduce site operation
Difficulty improves staff's construction efficiency；Equipment and its operation and maintenance cost can be effectively reduced, to reduce cost.
Specific embodiment
Hereinafter, graphite alkenes cement-base composite material of the invention will be described in detail in conjunction with exemplary embodiment
Construction method.Wherein, it of the invention first, second is only used for being mutually distinguishable, does not indicate sequencing.
The present invention provides a kind of construction methods of graphite alkenes cement-base composite material, to improve grapheme material in water
Dispersibility in mud composite material, to effectively promote the performance of graphene cement composite material；At the same time, of the invention to apply
Work method also can simplify the dispersion steps in work progress, to lifting construction efficiency and reduce cost.
In an exemplary embodiment of the present invention, the construction method can comprise the following steps that
S01: cement, graphite alkenes material are mixed, grinding, obtains graphite alkenes cement disperse materials.The step can incite somebody to action
Graphite alkenes material is evenly dispersed in cement granules, and graphite alkenes material can be with grinding aid to promote cement granules partial size thin
Change, can both improve the final performance of its composite material jointly.Wherein, the partial size of graphite alkenes cement disperse materials can be
0.001~50 μm.By weight, the amount of graphite alkenes material can be the 0.01~1 of cement.The graphite alkenes material it is aqueous
Amount can be 1% hereinafter, further, can be in one thousandth hereinafter, being conducive to grind in this way.Graphite alkenes material may include extruding
At least one of graphite, graphene oxide and graphene.Expanded graphite may include pretreated expanded graphite and not carry out pre-
The expanded graphite of processing.Graphene oxide may include the graphene oxide being not handled by and pretreated graphene oxide.
Above-mentioned pretreatment may include a variety of processing methods, such as sulfonation processing, nitrogen treatment etc., these processing be in order to increase or
After changing the value volume and range of product of material surface functional group, such as sulfonation processing sulfur-bearing function can be introduced in surface of graphene oxide
Group etc., these processing methods can promote hydrated cementitious to crystallize, to improve the overall performance of composite material.
S02: it is mixed and stirred for graphite alkenes cement disperse materials, water, auxiliary agent and filler uniformly, to obtain composite mortar.Its
In, graphite alkenes cement disperse materials, water, auxiliary agent and filler mass ratio can for 1:30%~50%:0.1%~2%:200~
500%.Wherein, the additional amount of water is affected to the performance of cement composite material, excessive moisture, such as higher than cement quality
50% will lead to cement composite material reduced performance；It is excessively sticky that too low water will lead to slurry, is unfavorable for each material mixing
Uniformly etc..The amount of auxiliary agent is generally added less and more fewer better, and the excessive cost that not only increases is added and also results in composite material
It can reduce；The addition of filler should control in the reasonable scope, too low to will lead to using a large amount of cement, excessively high and may make
Performance is not up to standard.During preparing composite mortar, can also be added cement, the additional amount of cement can for 50~500wt% (with
On the basis of graphite alkenes cement disperse materials), such as joined for cement is 1~2 times of graphite alkenes cement disperse materials.Auxiliary agent can
Including at least one of dispersing agent, water-reducing agent and foaming agent, filler may include at least one in sandstone, slag and normal sand
Kind.
S03: the composite mortar is conserved so that the molding of graphite alkenes cement-base composite material, that is, obtain after conserving
Graphite alkenes cement-base composite material.Directly composite mortar, which can also be poured into, needs molding place also with such as in mine.
Further, after composite mortar being injected mold before maintenance, oscillation ram-jolt and excludes cement slurry in a mold
Bubble.Wherein, maintenance can carry out in the curing box of constant temperature and humidity, such as temperature can be 20~25 DEG C, humidity can for 95~
99%.
In the present embodiment, step S01 can be carried out at the construction field (site), can also be carried out in non-construction site (such as production vehicle
Between), i.e., it is well prepared in advance.Preferably, can be well prepared in advance, the construction procedure of construction site can be simplified in this way, shortening is applied
Between working hour, construction efficiency is improved, while can also reduce the operation and maintenance of construction site equipment, reduce cost.
In the present embodiment, in the case where cement not being added during preparing composite mortar, step S02 may include with
Under several situations:
(1) directly the various raw materials in step S02 are mixed, and stirred evenly, obtain composite mortar.The step can applied
Work scene carries out, and can also carry out elsewhere；Preferably, it carries out at the construction field (site), the fortune of composite mortar can be saved in this way
Defeated cost.
(2) step 1: first being mixed and stirred for graphite alkenes cement disperse materials, water uniformly, to obtain cement slurry.Second
Step: it is mixed and stirred for the cement slurry and the auxiliary agent, filler uniformly, to obtain the composite mortar again.Preferably, second
Step can carry out at the construction field (site), to save cost.
(3) step 1: by least one of the first auxiliary agent and the first filler and the graphite alkenes cement disperse materials,
One water mixing simultaneously stirs evenly, and obtains cement slurry.Step 2: by the second auxiliary agent, the second filler and the second water body extremely
A kind of few and cement slurry is mixed and stirred for uniformly, obtaining composite mortar.Wherein, it first, second is only used for being mutually distinguishable, not table
Show that sequencing, the first auxiliary agent and the second auxiliary agent all include at least one of dispersing agent, water-reducing agent and foaming agent, the first filler
It may comprise at least one of sandstone and slag kind with the second filler.
In (2) and (3) situation, it is preferable that second step can carry out at the construction field (site), to save cost.
In the present embodiment, in the case where being also added into cement during preparing composite mortar, step S02 may include
Several situations below:
(1) directly the various raw materials in step S02 are mixed, and stirred evenly, obtain composite mortar.The step can applied
Work scene carries out, and can also carry out elsewhere；Preferably, it carries out at the construction field (site), the fortune of composite mortar can be saved in this way
Defeated cost.
(2) step 1: first being mixed and stirred for graphite alkenes cement disperse materials, water uniformly, to obtain cement slurry.Second
Step: it by cement slurry and auxiliary agent, filler, cement mixing and stirs evenly again, obtains the composite mortar.Preferably, second step
It can carry out at the construction field (site), to save cost.
(3) step 1: by least one of the first auxiliary agent and the first filler and the graphite alkenes cement disperse materials,
One water mixing simultaneously stirs evenly, and obtains cement slurry.Step 2: by the second auxiliary agent, the second filler and the second water body extremely
It is few a kind of with cement slurry, cement mixing and to stir evenly, obtain composite mortar.For example, can by auxiliary agent, filler, water body with
Graphene cement dispersants are mixed and stirred for uniformly, obtaining cement slurry；Then again by cement slurry, filler and cement mixing simultaneously
It stirs evenly, obtains composite mortar.Wherein, first, second be only used for being mutually distinguishable, do not indicate sequencing, the first auxiliary agent and
Second auxiliary agent all includes at least one of dispersing agent, water-reducing agent and foaming agent, and the first filler and the second filler may comprise sand
At least one of stone, slag and normal sand.
Second step in (2) and (3) situation can carry out at the construction field (site), to save cost, such as cement
Transportation cost.
Further, when preparing composite mortar, cement can also be added, and (scene plus a part of cement, can be significantly
Saving cost (grinding and transport etc.)).
In the present embodiment, the graphite alkenes material may include peanut shell graphene.Preparing graphite alkenes cement point
During bulk cargo, cement granules partial size can be refined, and peanut shell graphene can be dispersed more evenly, can be effective
It is internal finer and close that ground promotes the composite material to be formed in aquation crystallization process (maintenance processes i.e.), and surface is more uniform
The more tiny complex of crackle to promote the comprehensive mechanical property of composite material, endurance quality etc., while being able to extend compound
The service life of material.
The preparation method of the peanut shell graphene can comprise the following steps that
Peanut shell powder, potassium hydroxide and water that mass ratio is 1:0.5~2:0.5~2 are mixed, are then dried,
Obtain desciccate.Wherein, mixing can be realized by stirring.Peanut shell powder can be cleaned by peanut shell, is dry, being ground into
It is obtained after powder；Peanut shell powder can sieve with 100 mesh sieve, and water content can be not higher than 1%, such as 0.5 ± 0.2%；Peanut shell powder
Water content is lower, and effect is better, but correspondingly, cost will increase.Each raw material is mixed according to above-mentioned mass ratio, potassium hydroxide
It makes full use of the ratio is available, also can be very good to promote the conversion of peanut shell material, (i.e. peanut shell is converted to graphite
Alkene), water consumption can be to guarantee that other both have mixing in the ratio.Drying can evaporate extra moisture while promote
Potassium hydroxide penetrates into inside peanut shell；Drying can carry out at 110~150 DEG C, and control can guarantee hydrogen-oxygen in the range
The mix uniformly effect for changing potassium and peanut shell, even if potassium hydroxide is fully infiltrated into inside peanut shell, drying time can for 0.5~
5h。
The desciccate is subjected to high temperature pyrolysis, obtains thermal decomposition product.Thermal decomposition product may include containing inside peanut shell
Carbon organic matter and partial impurities.The atmosphere of high temperature pyrolysis can be inert atmosphere, this can be avoided peanut shell and connects at high temperature
It touches air and aoxidizes, so as to cause the reduction of the yield of graphene.The step of high temperature pyrolysis can include: with 5~20 DEG C/
The desciccate is heated to 800~1000 DEG C, keeps the temperature 2~5h by the heating rate of min；Wherein, the heating-up time can be according to guarantor
Temperature and heating rate determine.
The thermal decomposition product is placed in sulfuric acid solution, is ultrasonically treated, then filters, is dry, obtaining peanut shell stone
Black alkene.Wherein, drying can make peanut shell graphene water content not higher than 1%, be conducive to latter step mixed grinding in this way.Sulfuric acid
The concentration of solution can be 1~3mol/L, and the ratio of thermal decomposition product and sulfuric acid solution can be 1~100g/L.The ultrasound of ultrasonic treatment
Frequency can be 40~80Hz, and the time can be 1~2h.Between filtering and drying, the product being obtained by filtration can also be washed,
To remove sulfuric acid and other impurities extra in peanut shell graphene.
Compared with traditional graphene, the raw material of peanut shell graphene of the invention is with from a wealth of sources, manufacture craft is simple
The advantages such as single, environmental-friendly.It is added in cement material using peanut shell graphene as grinding aid, can both refine cement grain in this way
Diameter is conducive to improve dispersibility of the peanut shell graphene in cement again, can also make full use of excellent itself of grapheme material
Performance (such as tensile strength is high, promote cement homogeneously crystallized etc.), to improve the comprehensive performance of cement base joint product.
In the present embodiment, using peanut shell graphene as graphite alkenes material,
Step S01 can are as follows: by peanut shell graphene and cement mixing, grinding, obtains peanut shell graphene cement (i.e. graphite
Alkenes cement disperse materials).For example, dry peanut shell graphene and cement material can will be taken, it is placed in grinder, when grinding one section
Between prepare peanut shell graphene cement.The partial size of the cement (being not added with the cement of peanut shell graphene) usually ground is
10~120 μm；And the partial size of peanut shell graphene cement of the invention can be 1~40 μm, such as 20 ± 5 μm, in this step
Cement granules partial size can be refined, and peanut shell graphene can be dispersed more evenly.The quality of peanut shell graphene can be
The 0.01%~20% of cement quality not only can make cement have preferable partial size, additionally it is possible to make graphene in cement
In have preferable dispersion effect.But after the quality of peanut shell is higher than the 20% of cement quality, cost dramatically increases and effect
It is not necessarily good.The mode of grinding may include roll mill or ball milling, when using ball milling, 100~1200r/min of revolving speed, and the time
0.5~10h, material ratio 1:1~8, material ratio refer to the quality of ball milling pearl and are added into the mass ratio of the cement material of ball grinder.
Step S02 are as follows: the peanut shell graphene cement, water, auxiliary agent and filler are mixed, composite mortar is obtained, alternatively,
The peanut shell graphene cement, water and filler are mixed, peanut shell graphene cement base composite mortar is obtained.Further,
Peanut shell graphene cement, water and auxiliary agent can be mixed, or peanut shell graphene cement and water are mixed, be then added and fill out
Expect and is uniformly mixing to obtain peanut shell graphene cement base composite mortar.Wherein, mixing can be realized by stirring.Peanut shell stone
Mass ratio between black alkene cement, water and auxiliary agent can be 1:0.4~0.5:0.01~0.02, further, can for 1:0.42~
0.47:0.01~0.015；Alternatively, the mass ratio between peanut shell graphene cement, water can be 1:0.42~0.47.Filler adds
Dosage can be 200wt%~400wt% (on the basis of cement), and mixing time can be 0.5~20h.
In further exemplary embodiment of the invention, the construction method of the graphite alkenes cement-base composite material can
The following steps are included:
(1) the graphene cement disperse materials (production early period or construction workshop are completed) of high graphene content are prepared: weighing 1:
(graphene material can be dry graphene oxide material, pretreated herein for 0.01~1 cement material powder and dry graphene material
One or more mixing of graphene oxide material, graphene, pretreatment expanded graphite etc.), then it is mixed grinding distribution (this
Place's grinding can be one or more kinds of mixing of ball milling or barreling), and prepare graphene cement disperse materials.
(2) graphene cement slurry is prepared: by above-mentioned graphene cement and water, other auxiliary agents (dispersing agent, water-reducing agent, hair
Infusion etc. it is one or more), the one or more kinds of of filler (sandstone, slag etc.) three mix and grind or stir evenly,
Wherein, grinding can make each raw material mix more uniform.
(3) graphene cement composite material (this step general at the construction field (site)) is prepared: by slurry obtained by previous step or the
Powder obtained by one step, and need to be added at the construction field (site) cement, water, other auxiliary agents (dispersing agent, water-reducing agent, foaming agent etc.),
After one or more of filler (sandstone, slag etc.) is stirred, it is directly injected into mold, oscillation maintenance molding.
The above exemplary embodiments for a better understanding of the present invention carry out further it below with reference to specific example
Explanation.
Example 1
500 parts by weight: the cement material powder of 50 parts by weight (1:0.1) and dry graphene oxide material are weighed, then by it
Ball milling in ball grinder is placed in disperse.Such as rotational speed of ball-mill 300r/min, time 2.5h, material ratio 1:8.Gao Shi can be prepared
The graphene cement disperse materials of black alkene content.
After above-mentioned graphene cement disperse materials are transported to construction site, weigh the sample of 50 parts by weight, then with construction site
400 parts by weight of cement, 225 parts by weight water, 2 parts per weight dispersing agents, 2 parts by weight of blowing agent, the stirring such as 1350 parts by weight sandstones
It is uniformly mixed, then is directly injected into mold, oscillation maintenance molding.
Example 2
Weigh 1000 parts by weight: then the cement material powder of 50 parts by weight (1:0.05) and dry graphene oxide material will
It is placed in ball milling in ball grinder and disperses, and can prepare the graphene cement disperse materials of high graphene content.Wherein, ball milling turns
Fast 400r/min, time 2.0h, material ratio 1:6.
By above-mentioned 1050 parts by weight of graphite alkene cement disperse materials and 100 parts by weight water, 2.0 parts per weight dispersing agents, 2.0 weight
Part water-reducing agent mixes and grinds or stir evenly, and is prepared into graphene cement slurry.
After above-mentioned graphene cement slurry is transported to construction site, the graphene cement slurry of 230 parts by weight is weighed, then with
800 parts by weight of cement of construction site, 200 parts by weight water, 2 parts by weight defoaming agents, 1350 parts by weight slags etc. are stirred
It is even, then it is directly injected into live mold, oscillation maintenance molding.
Example 3
Weighing 0.3wt% drying peanut shell graphene, (i.e. drying peanut shell graphene quality is cement material quality
0.3%) it with 500 parts by weight of cement material, is placed in ball mill, ball milling (revolving speed 300r/min, time 1.5h, material ratio 1:8) is i.e.
Peanut shell graphene cement sample can be prepared into.
The above-mentioned peanut shell graphene cement sample of 450 parts by weight is weighed, 225 parts by weight water and 5 parts by weight defoaming agents are added
And 0.5h is stirred, it adds 1350 parts by weight normal sands and continues to stir 0.5h, finally inject mold, vibrate 10min, be placed in standard
(about 20 DEG C of temperature, humidity is greater than in 99%) after maintenance molding for 24 hours curing box, deviates from mold, obtains composite material.
In conclusion the advantages of construction method of graphite alkenes cement-base composite material of the invention can include:
(1) present invention, so both can be by graphite alkenes material equably first graphite alkenes material and cement abrasive lapping
It is dispersed in cement granules, graphite alkenes material can promote the refinement of cement granules partial size again with grinding aid, with compound after raising construction
The final performance of material.
(2) present invention can ensure that each ingredient of graphite alkenes cement-base composite material and uniformly mixing (such as prepare graphite
The process of alkenes cement disperse materials), and can imitate and avoid because each component is not easy to be uniformly mixed brought ask in site operation
Topic.
(3) present invention can ensure that promotion of the graphite alkenes material to composite material combination property.
(4) present invention can first be prepared into slurry or powder (i.e. graphite alkenes cement disperse materials), then transport site operation to,
Site operation difficulty can be reduced, staff's construction efficiency is improved, guarantees construction quality, while can also effectively reduce and set
Standby and its operation and maintenance cost, to reduce cost.
Although those skilled in the art should be clear above by combining exemplary embodiment to describe the present invention
Chu can carry out exemplary embodiment of the present invention each without departing from the spirit and scope defined by the claims
Kind modifications and changes.
Claims (10)
1. a kind of construction method of graphite alkenes cement-base composite material, which is characterized in that the construction method includes following step
It is rapid:
Mass ratio is mixed, grinding for cement, the graphite alkenes material of 1:0.01~1, obtains graphite alkenes cement disperse materials；
It is 1:0.3~0.5:0.001~0.02:2~5 graphite alkenes cement disperse materials by mass ratio, water, auxiliary agent and fills out
Material is mixed and stirred for uniformly, obtaining composite mortar；
The composite mortar is conserved, so that graphite alkenes cement-base composite material forms.
2. the construction method of graphite alkenes cement-base composite material according to claim 1, which is characterized in that described to obtain
The step of composite mortar includes:
It is mixed and stirred for graphite alkenes cement disperse materials, water uniformly, to obtain cement slurry；
It is mixed and stirred for the cement slurry and the auxiliary agent, filler uniformly, to obtain the composite mortar.
3. the construction method of graphite alkenes cement-base composite material according to claim 1, which is characterized in that the water packet
Include the first water body and the second water body, the auxiliary agent includes the first auxiliary agent and the second auxiliary agent, and the filler includes the first filler and the
Two fillers, described the step of obtaining composite mortar include:
By at least one of the first auxiliary agent and the first filler and the graphite alkenes cement disperse materials, the first water mixing and stir
It mixes uniformly, obtains cement slurry；
At least one of second auxiliary agent, the second filler and second water body are mixed and stirred for uniformly, obtaining with the cement slurry
To composite mortar.
4. a kind of construction method of graphite alkenes cement-base composite material, which is characterized in that the construction method includes following step
It is rapid:
The first cement that mass ratio is 1:0.01~1 is mixed with graphite alkenes material, is ground, the dispersion of graphite alkenes cement is obtained
Material；
It by the graphite alkenes cement disperse materials, water, auxiliary agent, filler and the second cement mixing and stirs evenly, obtains composite pulp
Material；
The composite mortar is conserved, so that graphite alkenes cement-base composite material forms.
5. the construction method of graphite alkenes cement-base composite material according to claim 4, which is characterized in that the water packet
Include the first water body and the second water body, the auxiliary agent includes the first auxiliary agent and the second auxiliary agent, and the filler includes the first filler and the
Two fillers, described the step of obtaining composite mortar include:
By at least one of the first auxiliary agent and the first filler and the graphite alkenes cement disperse materials, the first water mixing and stir
It mixes uniformly, obtains cement slurry；
By at least one of the second auxiliary agent, the second filler and second water body and the cement slurry, the second cement mixing and stir
It mixes uniformly, obtains composite mortar.
6. the construction method of graphite alkenes cement-base composite material according to claim 1 or 4, which is characterized in that described
Graphite alkenes material includes at least one of expanded graphite, graphene oxide and graphene.
7. the construction method of graphite alkenes cement-base composite material according to claim 6, which is characterized in that the graphite
Alkene includes peanut shell graphene, and the water content of the peanut shell graphene is below 1%.
8. the construction method of graphite alkenes cement-base composite material according to claim 7, which is characterized in that the peanut
Shell cement includes the graphene prepared in accordance with the following methods:
Peanut shell powder, potassium hydroxide and water that mass ratio is 1:0.5~2:0.5~2 are mixed, is then dried, obtains
Desciccate；
The desciccate is subjected to high temperature pyrolysis, obtains thermal decomposition product；
The thermal decomposition product is placed in sulfuric acid solution, is ultrasonically treated, then filters, is dry, obtaining peanut shell graphene.
9. the construction method of graphite alkenes cement-base composite material according to claim 7, which is characterized in that the graphite
The partial size of alkenes cement disperse materials is 1~50 μm.
10. the construction method of graphite alkenes cement-base composite material according to claim 1 or 4, which is characterized in that described
Method may further comprise the step of: before maintenance, and the composite mortar is injected mold and is vibrated, by composite mortar in mould
Ram-jolt bubble removing side by side in tool.
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