CN109704617A - A kind of building waste wallboard crack resistance modifier and preparation method thereof - Google Patents
A kind of building waste wallboard crack resistance modifier and preparation method thereof Download PDFInfo
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- CN109704617A CN109704617A CN201910027019.8A CN201910027019A CN109704617A CN 109704617 A CN109704617 A CN 109704617A CN 201910027019 A CN201910027019 A CN 201910027019A CN 109704617 A CN109704617 A CN 109704617A
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- building waste
- crack resistance
- resistance modifier
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- waste wallboard
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Abstract
The present invention discloses a kind of building waste wallboard crack resistance modifier and preparation method thereof, wherein by mass percentage, the building waste wallboard crack resistance modifier includes: 20~30% light calcined magnesia；12~20% calcium oxide-calcium sulphoaluminate class clinker；30~42% filler；9~15% silica flour；And 5~10% light calcium carbonate powder.The present invention has selected the raw material as building waste wallboard crack resistance modifier such as light calcined magnesia, calcium oxide-calcium sulphoaluminate class clinker, filler, silica flour, light calcium carbonate powder, sodium gluconate, polyvinyl alcohol and inorganic gel, and the proportion of each raw material is optimized, to obtain final formula, building waste wallboard crack resistance modifier prepared by the present invention, it has larger improvement to the cracking resistance of regeneration wallboard, and it is at low cost, preparation process is simple.
Description
Technical field
The present invention relates to the field of building materials more particularly to a kind of building waste wallboard crack resistance modifier and its preparation sides
Method.
Background technique
According to alleged building waste in " urban building waste administrative provisions ", refer to that construction unit, unit in charge of construction create, change
Spoir caused by building, extend and remove during all kinds of buildings, structures, pipe network etc. and resident's decorations house,
Rejected material and other wastes.Construction refuse regenerated to utilize product, the huge market demand, governments at all levels issue various government decrees, encourage
With require government-works and business development engineering to use renewable building material.
Construction refuse regenerated to utilize product, mainstream kind has currently on the market: recycled aggregate, regenerated construction material two major classes.Its
In: recycled aggregate is divided into regenerated coarse aggregate and recycled fine aggregate etc..Regenerated construction material is mainly regeneration brick and regenerates wallboard, extensively
For building, road, bridge construction in.
And in the prior art, the cracking resistance of construction refuse regenerated wallboard is poor, is unfavorable for regenerating the popularization and application of wallboard.
Therefore, the existing technology needs to be improved and developed.
Summary of the invention
In view of above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a kind of building waste wallboard crack resistance modifiers
And preparation method thereof, it is intended to solve the problems, such as that regeneration wallboard cracking resistance is to be improved in the prior art.
Technical scheme is as follows:
A kind of building waste wallboard crack resistance modifier, wherein by mass percentage, comprising:
12~18% light calcined magnesia；
25~30% calcium oxide-calcium sulphoaluminate class clinker；
18~30% filler；
8~12% silica flour；
6~9% light calcium carbonate powder；
1~3% sodium gluconate；
2~5% polyvinyl alcohol；
3~6% inorganic gel；
Surplus is water.
The building waste wallboard crack resistance modifier, wherein the inorganic gel is lithium magnesium silicate gel.
The building waste wallboard crack resistance modifier, wherein the mesh number of the light calcium carbonate powder is 1000~1200 mesh.
The building waste wallboard crack resistance modifier, wherein the filler is fine powder material.
The building waste wallboard crack resistance modifier, wherein the specific surface area of the fine powder material is greater than 450m2/kg。
The building waste wallboard crack resistance modifier, wherein the mesh number of the fine powder material is 200~400 mesh.
The building waste wallboard crack resistance modifier, wherein by mass percentage, comprising:
15% light calcined magnesia；
28% calcium oxide-calcium sulphoaluminate class clinker；
25% filler；
10% silica flour；
8% light calcium carbonate powder；
2% sodium gluconate；
4% polyvinyl alcohol；
5% inorganic gel；
Surplus is water.
A kind of preparation method of building waste wallboard crack resistance modifier as described above, wherein comprising steps of
By light calcined magnesia, silica flour, light calcium carbonate powder, sodium gluconate, polyvinyl alcohol and a part of water be pre-mixed
One mixture；
And by calcium oxide-calcium sulphoaluminate class clinker, filler, inorganic gel and remaining a part of water be pre-mixed second
Mixture；
The first mixture and the second mixture are stirred mixing again, obtain building waste wallboard crack resistance modifier.
The preparation method, wherein the incorporation time of the first mixture and the second mixture is 6~8 minutes.
The preparation method, wherein the first mixture and the second mixture are mixed in spiral ribbon mixer.
The utility model has the advantages that the present invention has selected light calcined magnesia, calcium oxide-calcium sulphoaluminate class clinker, filler, silica flour, light
The raw material as building waste wallboard crack resistance modifier such as calcium powder, sodium gluconate, polyvinyl alcohol and inorganic gel, and to each original
The proportion of material is optimized, so that final formula has been obtained, building waste wallboard crack resistance modifier prepared by the present invention,
It has larger improvement to the cracking resistance of regeneration wallboard, and at low cost, and preparation process is simple.
Specific embodiment
The present invention provides a kind of building waste wallboard crack resistance modifier and preparation method thereof, to make the purpose of the present invention, skill
Art scheme and effect are clearer, clear, and the present invention is described in more detail below.It should be appreciated that tool described herein
Body embodiment is only used to explain the present invention, is not intended to limit the present invention.
A kind of building waste wallboard crack resistance modifier provided by the present invention, by mass percentage, comprising:
12~18% light calcined magnesia；
25~30% calcium oxide-calcium sulphoaluminate class clinker；
18~30% filler；
8~12% silica flour；
6~9% light calcium carbonate powder；
1~3% sodium gluconate；
2~5% polyvinyl alcohol；
3~6% inorganic gel；
Surplus is water.
The sum of mass percent of each raw material is 100%.
The reason of regeneration wallboard cracking, mainly has: dehydration drying shrinkage and temperature difference shrinkage are shunk one is generating in hydration process,
The second is tensile strength is small, limit elongation is low.When shrinkage value is more than concrete ultimate extension, concrete, which will crack, to be caused to leak.It can
See that " splitting " is the major reason of " infiltration ", concrete is not permeable without splitting, and the premise of antiseepage is anticracking.
Building waste wallboard crack resistance modifier in the present invention is added in building waste concrete mix water after generate a large amount of expansions
Property crystallization hyrate-hydrated calcium aluminate sulfate, i.e. entringite makes concrete generate appropriateness expansion, constraint of the expansive concrete in reinforcing bar and ortho position
Under the compression established in the structure, this compression can offset the contraction pressure or keep its small that concrete generates in hardening process
In the limit of stretch of concrete to prevent concrete shrinkage cracking.
It can be seen that the addition of building waste wallboard crack resistance modifier, changes answering in concrete hardening process since expansion compensation is shunk
Stress-strain state splits infiltration so fundamentally overcoming the fault in material of concrete to solve the problems, such as concrete material.
Specifically, light calcined magnesia is a kind of by magnisite stone, shepardite and the hydrogen by extracting in seawater or brine
Magnesia Mg (OH)2, through 700~1000 DEG C of temperature lower calcinations, it is made to decompose discharge CO2Or H2O to get arrive light-burning magnesium powder
(Caustic calcined magnesia), also referred to as light calcined magnesia, caustic magnesia or magnesia unslacked, are commonly called as magnesia.It is light-burned
Magnesium powder quality is loose, chemical activity is big, not only can be used for manufacturing magnesium cement, magnesite building material, heat-insulating heat-preserving material etc., but also be
The intermediate product of two step calcination methods production quality magnesia.2852 DEG C of light calcined magnesia fusing point, 3600 DEG C of boiling point, it is dissolved in acid and ammonium
Salt is insoluble in water and ethyl alcohol.Specific surface area is 180m at 400 DEG C of calcination temperature2/g.Specific surface area is only 3m at 1300 DEG C2/g。
It easily deliquesces in air, it belongs to the cementing material of air-setting.
Calcium oxide-calcium sulphoaluminate class clinker is using lime stone, alumina and chemical industry anhydrous gypsum as raw material, by CaO:Al2O3:
CaSO4(mole ratio)=4:1:3 is burnt through glue, and regrinding into fineness is 1500~2300cm2The powder of/g specific surface area.It is this ripe
Material is using C4A3S and C3S as main mineral constituent.General mixing expansive concrete volume (presses swelling agent/cement+swelling agent
Weight %) 7.0~11.0%.Mixing self-stressing concretes is 13~17%.
Filler refers to the material being filled in other objects.Filler is also known as filler, refer to improve processing performance,
Mechanical Properties of Products simultaneously (or) reduce the solid material of cost.Fine powder material is the small material of the thin quality of particle, and generally chemistry is used
Product or building material.
Further, the filler is preferably fine powder material.
The fine powder material is the small material of the thin quality of particle, generally chemical article or building material.It is mixed in coarse granule
In fine powder material to it is coarse grained movement play the role of reduce friction, be conducive to the rolling and flowing of material.While fine powder material
In the presence of the refinement for also helping product surface and article section porosity is reduced, improves quality of item.The fine powder material specifically may be used
To be talcum powder etc..
Further, the specific surface area of the fine powder material is greater than 450m2/kg.Fine powder material can be improved in biggish specific surface area
With the contact area of other raw materials, so that fine powder material be enable to be sufficiently mixed with other raw materials.Further, the mesh of the fine powder material
Number is 200~400 mesh, and the even particle size of such fine powder material and moderate can be improved the stability of product.
The silica flour is also known as silicon powder.Silica flour is a kind of hard, wear-resisting, stable chemical performance silicate mineral,
Its main mineral constituent is SiO2, color be milky or semi-transparent clear shape, hardness 7, the crisp no cleavage of property, conchoidal fracture,
Greasy luster, density 2.65, bulk density (20-200 mesh is 1.5), chemistry, calorifics and mechanical performance have apparent different
Tropism is slightly soluble in KOH solution insoluble in acid, and 1650 DEG C of fusing point.After the quartz gone out from mining is processed, general fineness
Product more than 120 mesh is known as silica flour.Further, the mesh number of the silica flour is 325~400 mesh, the quartz of above-mentioned mesh number
Powder can come into full contact with other raw materials and uniformly mix.
The light calcium carbonate powder is also known as precipitated calcium carbonate, is that (main component is oxidation by the raw materials section such as lime stone burning generation lime
Calcium) and carbon dioxide, it adds water digestion lime and generates milk of lime (main component is calcium hydroxide), be then passed through carbon dioxide again
The milk of lime that is carbonized generates precipitation of calcium carbonate, crushes and is made through lime flour mill after being most dehydrated, dried afterwards, or first uses carbonic acid
Sodium and calcium chloride carry out metathesis reaction and generate precipitation of calcium carbonate, are then made through dehydration, drying and crushing.Due to light calcium carbonate powder
Settling volume (2.4-2.8mL/g) than dicalcium powder settling volume (1.1-1.4mL/g) greatly, so referred to as light calcium carbonate powder.Into
One step, the mesh number of the light calcium carbonate powder are 1000~1200 mesh, the even particle size of such light calcium carbonate powder and moderate, can be improved production
The stability of product.
The sodium gluconate can increase the plasticity and intensity of building waste wallboard, and have retardation.It postpones mixed
The initial and final solidification period of solidifying soil.Plasticity and the initial solidification time is delayed to be very important problem, such as in high-temperature
In season construction and the engineer operation of large size, delaying the initial solidification time then is a problem, and sodium gluconate can satisfactorily resolve this
A problem.In addition when high temperature be glued oil well be it is relatively difficult, it is plastic within several hours after being added to sodium gluconate.
The polyvinyl alcohol is important industrial chemicals, for manufacturing Pioloform, polyvinyl acetal, resistance to gasoline pipeline and vinylon
Synthetic fibers, fabric-treating agent, emulsifier, paper coating, adhesive, glue etc..Polyvinyl alcohol in the present invention specifically can be with
It is PVA17-99, PVA20-99 or highly viscous PVA24-99, PVA26-99 etc. of medium viscosity.Its application in the present invention, has
There is the characteristic of high clayization, there is significant cracking resistance effect.
The inorganic gel is preferably lithium magnesium silicate gel, and artificial synthesized lithium magnesium silicate gel essential mineral composition is lithium
Saponite.Artificial synthesized hectorite is trioctahedron layer silicate mineral as natural hectorite.Unit cell is by two layers
Si-O tetrahedron presss from both sides one layer of Mg- (O.OH) trioctahedron composition.It observes under an electron microscope, crystal grain is in irregular sheet, piece
Long and wide about (0.3~2.5) μm, piece thickness about (15~230) nm is typical artificial synthesized two-dimensional nano mineral material.Silicic acid
The crystal structure unit of magnesium lithium gel is small thin slice of the thickness in terms of nanometer.The surface of small pieces be covered with it is tradable sun from
Son, wherein predominantly Na+.When gel particle is mixed with water, water and Na+Contact is adsorbed to the surface of thin slice, by gel along thin
Piece struts, and at this moment particle expands rapidly until thin slice separates.Since thin slice level is negatively charged, end face is positively charged, after separation
Thin slice end face be attracted to the level of another thin slice, to quickly form the colloform texture of three-dimensional space, i.e. card palace structure,
Increase the viscosity of system, and suspension, thickening property, thixotropy and good compatibility and chemical stability with height.
Further, by mass percentage, the building waste wallboard crack resistance modifier includes:
15% light calcined magnesia；
28% calcium oxide-calcium sulphoaluminate class clinker；
25% filler；
10% silica flour；
8% light calcium carbonate powder；
2% sodium gluconate；
4% polyvinyl alcohol；
5% inorganic gel；
Surplus is water.
The sum of mass percent of each raw material is 100%.
The sum of the mass percent of each raw material is similarly 100% in subsequent embodiment.
Tests prove that above-mentioned specific formula, obtained building waste wallboard crack resistance modifier effect of prestressed is more preferable.
The present invention also provides a kind of preparation methods of building waste wallboard crack resistance modifier as described above comprising step
It is rapid:
By light calcined magnesia, silica flour, light calcium carbonate powder, sodium gluconate, polyvinyl alcohol and a part of water be pre-mixed
One mixture；
And by calcium oxide-calcium sulphoaluminate class clinker, filler, inorganic gel and remaining a part of water be pre-mixed second
Mixture；
The first mixture and the second mixture are stirred mixing again, obtain building waste wallboard crack resistance modifier.
The present invention is to carry out light calcined magnesia, silica flour, light calcium carbonate powder, sodium gluconate, polyvinyl alcohol and a part of water
Mixing, and calcium oxide-calcium sulphoaluminate class clinker, filler, inorganic gel and remaining a part of water are mixed；It in this way can be with
Respectively obtain the first mixture and the second mixture.Finally the two mixtures are mixed, to obtain building waste wall
Plate crack resistance modifier.The advantage of doing so is that the similar raw material of shape can first be mixed, make raw material mixing more evenly.
Further, the incorporation time of the first mixture and the second mixture is 6~8 minutes.Incorporation time is too long, will lead to
The property of raw material changes, and effect of prestressed is caused to decline, and incorporation time is too short, then will lead to raw material mixing unevenly, respectively
It can not influence each other and mutually promote between raw material, cracking resistance is caused to decline.
Further, the first mixture and the second mixture are mixed in spiral ribbon mixer.Spiral ribbon mixer
Blade is helical ribbon, and the quantity of ribbon is two to three, is installed on the screw rod in blender center, the spiral shell of spiral ribbon mixer
Away from the outer diameter for determining ribbon.Above-mentioned blender is suitable for the stirring of each raw material in the building waste wallboard crack resistance modifier,
Mixing effect can be improved, reduce stirring cost.
Further, the speed of agitator of the first mixture and the second mixture is 60~80rpm.Speed of agitator is too fast, raw material
Property can change, the product stirred to get can not play original performance, and speed of agitator is excessively slow, and raw material is unable to fully mix
It is even, so currently preferred speed of agitator is 60~80rpm.
In following embodiment, filler is specially fine powder material, and the fine powder material is specially talcum powder, the ratio table of the fine powder material
Area is greater than 450m2/ kg, the mesh number of the fine powder material are 300 mesh, and the mesh number of the silica flour is 375 mesh, the light calcium carbonate powder
Mesh number is 1000 mesh, and the inorganic gel is preferably lithium magnesium silicate gel.
Embodiment 1
A kind of building waste wallboard crack resistance modifier, by mass percentage, comprising: 12% light calcined magnesia；30%
Calcium oxide-calcium sulphoaluminate class clinker；18% filler；8% silica flour；9% light calcium carbonate powder；1% sodium gluconate；
2% polyvinyl alcohol；6% inorganic gel；Surplus is water.
The preparation method is as follows:
By light calcined magnesia, silica flour, light calcium carbonate powder, sodium gluconate, polyvinyl alcohol and a part of water (such as whole water
Half, subsequent embodiment are identical) it is pre-mixed to obtain the first mixture；
And by calcium oxide-calcium sulphoaluminate class clinker, filler, inorganic gel and remaining a part of water be pre-mixed second
Mixture；
The first mixture and the second mixture are stirred mixing in spiral ribbon mixer again, incorporation time is 6 points
Clock, speed of agitator 80rpm obtain building waste wallboard crack resistance modifier.
Embodiment 2
A kind of building waste wallboard crack resistance modifier, by mass percentage, comprising: 18% light calcined magnesia；25%
Calcium oxide-calcium sulphoaluminate class clinker；30% filler；12% silica flour；6% light calcium carbonate powder；3% sodium gluconate；
5% polyvinyl alcohol；3% inorganic gel；Surplus is water.
The preparation method is as follows:
By light calcined magnesia, silica flour, light calcium carbonate powder, sodium gluconate, polyvinyl alcohol and a part of water be pre-mixed
One mixture；
And by calcium oxide-calcium sulphoaluminate class clinker, filler, inorganic gel and remaining a part of water be pre-mixed second
Mixture；
The first mixture and the second mixture are stirred mixing in spiral ribbon mixer again, incorporation time is 8 points
Clock, speed of agitator 60rpm obtain building waste wallboard crack resistance modifier.
Embodiment 3
A kind of building waste wallboard crack resistance modifier, by mass percentage, comprising: 17% light calcined magnesia；28%
Calcium oxide-calcium sulphoaluminate class clinker；19% filler；10.5% silica flour；7.5% light calcium carbonate powder；2% gluconic acid
Sodium；3% polyvinyl alcohol；4% inorganic gel；Surplus is water.
The preparation method is as follows:
By light calcined magnesia, silica flour, light calcium carbonate powder, sodium gluconate, polyvinyl alcohol and a part of water be pre-mixed
One mixture；
And by calcium oxide-calcium sulphoaluminate class clinker, filler, inorganic gel and remaining a part of water be pre-mixed second
Mixture；
The first mixture and the second mixture are stirred mixing in spiral ribbon mixer again, incorporation time is 8 points
Clock, speed of agitator 80rpm obtain building waste wallboard crack resistance modifier.
Embodiment 4
A kind of building waste wallboard crack resistance modifier, by mass percentage, comprising: 13% light calcined magnesia；26%
Calcium oxide-calcium sulphoaluminate class clinker；22% filler；9% silica flour；7% light calcium carbonate powder；1.5% sodium gluconate；
3% polyvinyl alcohol；4% inorganic gel；Surplus is water.
The preparation method is as follows:
By light calcined magnesia, silica flour, light calcium carbonate powder, sodium gluconate, polyvinyl alcohol and a part of water be pre-mixed
One mixture；
And by calcium oxide-calcium sulphoaluminate class clinker, filler, inorganic gel and remaining a part of water be pre-mixed second
Mixture；
The first mixture and the second mixture are stirred mixing, incorporation time 6.5 in spiral ribbon mixer again
Minute, speed of agitator 65rpm obtains building waste wallboard crack resistance modifier.
Embodiment 5
A kind of building waste wallboard crack resistance modifier, by mass percentage, comprising: 14% light calcined magnesia；29%
Calcium oxide-calcium sulphoaluminate class clinker；26% filler；11% silica flour；8% light calcium carbonate powder；2.5% gluconic acid
Sodium；4.5% polyvinyl alcohol；5% inorganic gel；Surplus is water.
The preparation method is as follows:
By light calcined magnesia, silica flour, light calcium carbonate powder, sodium gluconate, polyvinyl alcohol and a part of water be pre-mixed
One mixture；
And by calcium oxide-calcium sulphoaluminate class clinker, filler, inorganic gel and remaining a part of water be pre-mixed second
Mixture；
The first mixture and the second mixture are stirred mixing, incorporation time 7.5 in spiral ribbon mixer again
Minute, speed of agitator 75rpm obtains building waste wallboard crack resistance modifier.
Embodiment 6
A kind of building waste wallboard crack resistance modifier, by mass percentage, comprising: 15% light calcined magnesia；28%
Calcium oxide-calcium sulphoaluminate class clinker；25% filler；10% silica flour；8% light calcium carbonate powder；2% sodium gluconate；
4% polyvinyl alcohol；5% inorganic gel；Surplus is water.
The preparation method is as follows:
By light calcined magnesia, silica flour, light calcium carbonate powder, sodium gluconate, polyvinyl alcohol and a part of water be pre-mixed
One mixture；
And by calcium oxide-calcium sulphoaluminate class clinker, filler, inorganic gel and remaining a part of water be pre-mixed second
Mixture；
The first mixture and the second mixture are stirred mixing in spiral ribbon mixer again, incorporation time is 7 points
Clock, speed of agitator 70rpm obtain building waste wallboard crack resistance modifier.
Then the building waste wallboard crack resistance modifier that various embodiments of the present invention obtain is added in building waste, and made
Standby building waste wallboard (i.e. construction refuse regenerated wallboard can also claim construction refuse regenerated wallboard).Blank expression, which is not added, builds
Building refuse wallboard crack resistance modifier.
The cracking resistance of building waste wallboard is tested: according to " Standard for quality control of concrete " (GB50164-2011) into
Row.
The anti-permeability performance of building waste wallboard is tested: according to " Standard for quality control of concrete " (GB50164-2011) into
Row.
By the building waste wallboard crack resistance modifier of each embodiment, the anti-permeability performance of prepared building waste wallboard is such as
Shown in following table one.
Table one
By the building waste wallboard crack resistance modifier of each embodiment, the cracking resistance of prepared building waste wallboard is such as
Shown in following table two.
Table two
| Total area of cracks (the mm of unit2/m2) | |
| Blank | 487 |
| Embodiment 1 | 352 |
| Embodiment 2 | 287 |
| Embodiment 3 | 201 |
| Embodiment 4 | 268 |
| Embodiment 5 | 198 |
| Embodiment 6 | 124 |
Wherein electric flux value is lower, represents that seepage-resistant grade is higher, and the total area of cracks of unit is smaller, and cracking resistance is better.It can
See, building waste wallboard crack resistance modifier of the invention can improve the waterproof performance of building waste wallboard, can also mitigate and build
The bleeding of building refuse wallboard improves building waste wallboard later strength, building waste wallboard aquation can also be promoted complete, ties
Structure is more closely knit.
The embodiment of the present invention 6, obtained building waste wallboard crack resistance modifier is for the impervious, anti-of building waste wallboard
The improvement of fragility is better than other embodiments, and is apparently higher than blank group.
It should be understood that the application of the present invention is not limited to the above for those of ordinary skills can
With improvement or transformation based on the above description, all these modifications and variations all should belong to the guarantor of appended claims of the present invention
Protect range.
Claims (10)
1. a kind of building waste wallboard crack resistance modifier, which is characterized in that by mass percentage, comprising:
12~18% light calcined magnesia；
25~30% calcium oxide-calcium sulphoaluminate class clinker；
18~30% filler；
8~12% silica flour；
6~9% light calcium carbonate powder；
1~3% sodium gluconate；
2~5% polyvinyl alcohol；
3~6% inorganic gel；
Surplus is water.
2. building waste wallboard crack resistance modifier according to claim 1, which is characterized in that the inorganic gel is silicic acid
Magnesium lithium gel.
3. building waste wallboard crack resistance modifier according to claim 1, which is characterized in that the mesh number of the light calcium carbonate powder is
1000~1200 mesh.
4. building waste wallboard crack resistance modifier according to claim 1, which is characterized in that the filler is fine powder material.
5. building waste wallboard crack resistance modifier according to claim 4, which is characterized in that the specific surface of the fine powder material
Product is greater than 450m2/kg。
6. building waste wallboard crack resistance modifier according to claim 4, which is characterized in that the mesh number of the fine powder material is
200~400 mesh.
7. building waste wallboard crack resistance modifier according to claim 1, which is characterized in that by mass percentage, packet
It includes:
15% light calcined magnesia；
28% calcium oxide-calcium sulphoaluminate class clinker；
25% filler；
10% silica flour；
8% light calcium carbonate powder；
2% sodium gluconate；
4% polyvinyl alcohol；
5% inorganic gel；
Surplus is water.
8. a kind of preparation method of building waste wallboard crack resistance modifier as described in any one of claims 1 to 7, feature exist
In, comprising steps of
Light calcined magnesia, silica flour, light calcium carbonate powder, sodium gluconate, polyvinyl alcohol and a part of water are pre-mixed first to mix
Close object；
And calcium oxide-calcium sulphoaluminate class clinker, filler, inorganic gel and remaining a part of water are pre-mixed to obtain the second mixing
Object；
The first mixture and the second mixture are stirred mixing again, obtain building waste wallboard crack resistance modifier.
9. preparation method according to claim 8, which is characterized in that the incorporation time of the first mixture and the second mixture
It is 6~8 minutes.
10. preparation method according to claim 8, which is characterized in that the first mixture and the second mixture are in helical-ribbon type
It is mixed in blender.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110143802A (en) * | 2019-06-17 | 2019-08-20 | 山东凯勒蓝房家居文化发展有限公司 | Magnesium oxysulfide melamine paper facing negative oxygen ion rock porcelain non-combustible plate and preparation method thereof |
| CN111393172A (en) * | 2020-02-19 | 2020-07-10 | 佛山市山有海科技有限公司 | Inorganic green body reinforcing agent based on silicate system |
| CN111393134A (en) * | 2020-02-19 | 2020-07-10 | 佛山市山有海科技有限公司 | Silicate system-based modified bentonite body reinforcing agent |
| CN111777349A (en) * | 2020-07-28 | 2020-10-16 | 陕西科技大学 | Shrinkage-resistant and crack-resistant additive for cement-based composite material and preparation method thereof |
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| CN110143802A (en) * | 2019-06-17 | 2019-08-20 | 山东凯勒蓝房家居文化发展有限公司 | Magnesium oxysulfide melamine paper facing negative oxygen ion rock porcelain non-combustible plate and preparation method thereof |
| CN111393172A (en) * | 2020-02-19 | 2020-07-10 | 佛山市山有海科技有限公司 | Inorganic green body reinforcing agent based on silicate system |
| CN111393134A (en) * | 2020-02-19 | 2020-07-10 | 佛山市山有海科技有限公司 | Silicate system-based modified bentonite body reinforcing agent |
| CN111393172B (en) * | 2020-02-19 | 2022-12-20 | 佛山市山有海科技有限公司 | Inorganic green body reinforcing agent based on silicate system |
| CN111777349A (en) * | 2020-07-28 | 2020-10-16 | 陕西科技大学 | Shrinkage-resistant and crack-resistant additive for cement-based composite material and preparation method thereof |
| CN111777349B (en) * | 2020-07-28 | 2022-05-10 | 陕西科技大学 | Shrinkage-resistant and crack-resistant additive for cement-based composite material and preparation method thereof |
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