CN108793917A - A kind of crack resistence type phosphogypsum based plastering gypsum - Google Patents
A kind of crack resistence type phosphogypsum based plastering gypsum Download PDFInfo
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- CN108793917A CN108793917A CN201810697164.2A CN201810697164A CN108793917A CN 108793917 A CN108793917 A CN 108793917A CN 201810697164 A CN201810697164 A CN 201810697164A CN 108793917 A CN108793917 A CN 108793917A
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- parts
- crack resistence
- plastering gypsum
- calcium
- based plastering
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Classifications
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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
- C04B28/14—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 calcium sulfate cements
- C04B28/145—Calcium sulfate hemi-hydrate with a specific crystal form
- C04B28/147—Calcium sulfate hemi-hydrate with a specific crystal form beta-hemihydrate
-
- 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
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
-
- 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
- C04B2111/40—Porous or lightweight materials
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention provides a kind of crack resistence type phosphogypsum based plastering gypsum, including following component, the mass fraction of each component and each component is：55~70 parts of ardealite, 15~25 parts of coarse whiting, 10~15 parts of fine sand, 5~8 parts of grey calcium, 0.4~0.6 part of hydroxypropyl methyl cellulose, 0.2~0.25 part of calcium sulphate retarder, 0.08~0.1 part of K12 air entraining agents, 1~2 part of Na bases modified alta-mud, 0.7~0.9 part of thixotropic agent, 5~8 parts of floating bead, 1~1.8 part of MgO expansion agent, 1~5 part of lignocellulosic, 1~2 part of polypropylene fibre, 0.2~0.8 part of water-reducing agent.The present invention is by formulation optimization, and from Material texture, production technology adjustment solves ardealite in wall plastering material application process, cracking, hollowing risk.
Description
Technical field
The invention belongs to New Building Materials preparation fields, are related to a kind of for building concrete interior wall, accurate building block
A kind of plastering material for inner wall, and in particular to development of crack resistence phosphogypsum based plastering gypsum.
Background technology
Ardealite is to produce a kind of industry byproduct formed in process phosphoric acid, there is nearly hundred million tons of ardealite discharges every year,
And it is in rising trend, a large amount of soil is occupied to stack, and prodigious pollution is caused to the soil, underground water, environment of surrounding.
So the comprehensive utilization to ardealite is extremely urgent, but by ardealite performance limitation itself, ardealite is as gelling
The factors such as the easy climate of material and entringite content are excessive influence, and along with impurity content is more, chemical composition is unstable, to make
The problems such as, mechanical properties decrease cracking at ardealite base product, significantly limit the application in building materials neighborhood.
Ardealite is used in brushing gypsum, in order to solve stability, reaches indehiscent purpose in hardening process, existing
Technological approaches is about：First, the ardealite (main component is semi-hydrated gypsum) after dehydration is calcined is subjected to ripening,
Its internal impurity is set thoroughly to be homogenized, it is 20 days or so to generally require aging period, and is needed in aging period by windrow
It is stirred, reduces the application efficiency of ardealite, it is larger to equipment, human cost input；Second, ardealite (mainly at
Be divided into dihydrate gypsum) calcined without dehydration before, pre-processed, using washing, the methods of addition material, optimization raw material chemistry
Ingredient, to the risk for overcoming the brushing gypsum product caused by material defects to crack, the method production prepares cumbersome, industry
Metaplasia production is not yet ripe.
Invention content
The technical problem to be solved by the present invention is to be directed to above-mentioned deficiency, a solution is provided：By matching
Fang Youhua, from Material texture, production technology adjustment solves ardealite in wall plastering material application process, opens
It splits, the risk of hollowing.
Technical solution is used by realizing above-mentioned purpose of the present invention：
A kind of mass fraction of crack resistence type phosphogypsum based plastering gypsum, including following component, each component and each component
For：55~70 parts of ardealite, 15~25 parts of coarse whiting, 10~15 parts of fine sand, 5~8 parts of grey calcium, hydroxypropyl methyl cellulose 0.4~
0.6 part, 0.2~0.25 part of calcium sulphate retarder, 0.08~0.1 part of K12 air entraining agents, 1~2 part of Na bases modified alta-mud, thixotropic agent
0.7~0.9 part, 5~8 parts of floating bead, 1~1.8 part of MgO expansion agent, 1~5 part of lignocellulosic, 1~2 part of polypropylene fibre,
0.2~0.8 part of water-reducing agent.
The ardealite is not yet to display the building β gypsum of curing, cooling temperature is 45 by drying, 175 DEG C of calcinings
~55 DEG C, compression strength >=3.5MPa, 7.5 minutes presetting periods, final setting time 15 minutes, bulk density 780g/L.
For calcium carbonate content 98% or more, mesh number is 160~200 mesh in the coarse whiting.
The grey calcium is the mixture of calcium hydroxide, calcium oxide, coarse whiting, wherein content >=85% of calcium hydroxide, weight
Calcium content≤5%, pH value 14.
The hydroxypropyl methyl cellulose is cold water instant dissolving modified cellulose, viscosity 80000~
100000mPa.s, gelling temp >=55 DEG C.
The Na base modified alta-muds are modified magnesium aluminium silicate, and water requirement >=500%, crystal structure is stratiform, pH value
For neutrality.
The thixotropic agent is modified montmorillonite used, and bulk density is 520~580g/L.
The floating bead is hole-closing structure, and for mesh number in 50~70 mesh, bulk density is 200~250g/L.
The polypropylene fibre length is 3mm.
The water-reducing agent is melamine class powder.
Crack resistence type phosphogypsum based plastering gypsum provided by the present invention is improved by the complementation between different cementitious materials
Uneven, the uncoordinated disadvantage of ardealite premature cure makes up dry shrinkage and cracking caused by moisture evaporation is too fast in work progress
Risk；It is acted on by additive, whole slurry is formed into three-dimensional netted lap body, internal cohesiveness is provided, resist cementitious material
Between aggregate intensity it is low and generate deformation crackle, to realize the effect of crack resistence.
Specific implementation mode
Detailed specific description done to the application with reference to specific embodiment, but the protection domain of the application not office
It is limited to following embodiment.
Embodiment 1：
A kind of ardealite base lightweight wall plaster comprising the component of following parts by weight：65 parts of ardealite, 10 parts of coarse whiting,
10 parts of fine sand, 5 parts of grey calcium, 0.4 part of hydroxypropyl methyl cellulose, 0.25 part of calcium sulphate retarder, 0.08 part of K12 air entraining agents, Na bases
2 parts of modified alta-mud, 0.9 part of thixotropic agent, 5 parts of floating bead, 1.8 parts of magnesia expansion, 1 part of lignocellulosic, polypropylene fibre 1
Part, 0.2 part of water-reducing agent.
The powder of aforementioned proportion is prepared into 24Kg, stirs 5 minutes and is uniformly mixed, carried out respectively according to different execution conditions
Water is added to stir construction application：
Condition 1：By per kilogram powder amount of water than 0.68,3 kilograms of sizing materials are configured, is not required to stand, is directly applied to environment
The concrete walls surface of 23 DEG C of temperature, thickness 1cm；
Condition 2：By per kilogram powder amount of water than 0.53,3 kilograms of sizing materials are configured, is not required to stand, is directly applied to environment
The concrete walls surface of 23 DEG C of temperature, thickness 1cm；
Condition 3：By per kilogram powder amount of water than 0.68,3 kilograms of sizing materials are configured, is not required to stand, is directly applied to wall
The concrete walls surface of 40 DEG C of temperature, thickness 1cm；
Condition 4：By per kilogram powder amount of water than 0.53,3 kilograms of sizing materials are configured, is not required to stand, is directly applied to wall
The concrete walls surface of 40 DEG C of temperature, thickness 1cm；
Condition 5：By per kilogram powder amount of water than 0.68,3 kilograms of sizing materials are configured, is not required to stand, is directly applied to environment
The aerated blocks wall surface of 23 DEG C of temperature, thickness 1cm；
Condition 6：By per kilogram powder amount of water than 0.53,3 kilograms of sizing materials are configured, is not required to stand, is directly applied to environment
The aerated blocks wall surface of 23 DEG C of temperature, thickness 1cm；
Condition 7：By per kilogram powder amount of water than 0.68,3 kilograms of sizing materials are configured, is not required to stand, is directly applied to wall
The aerated blocks wall surface of 40 DEG C of temperature, thickness 1cm；
Condition 8：By per kilogram powder amount of water than 0.53,3 kilograms of sizing materials are configured, is not required to stand, is directly applied to wall
The aerated blocks wall surface of 40 DEG C of temperature, thickness 1cm；
By the comparison of above different construction environment temperature, different base course walls, different amount of water, reach in construction thickness
1cm is thick, and after hardening in 2 hours, apparent effect is good, does not occur brushing gypsum face checking phenomenon.
Embodiment 2：
A kind of ardealite base lightweight wall plaster comprising the component of following parts by weight：55 parts of ardealite, 25 parts of coarse whiting,
10 parts of fine sand, 5 parts of grey calcium, 0.5 part of hydroxypropyl methyl cellulose, 0.2 part of calcium sulphate retarder, 0.08 part of K12 air entraining agents, Na bases change
1 part of bentonite of property, 0.7 part of thixotropic agent, 5 parts of floating bead, 1 part of MgO expansion agent, 1 part of lignocellulosic, 1 part of polypropylene fibre,
0.3 part of water-reducing agent.
The powder of aforementioned proportion is prepared into 40Kg, stirs 5 minutes and is uniformly mixed, carried out respectively according to different agitating modes
Water is added to stir construction application：
Condition 1：It by per kilogram powder amount of water than 0.6, uses rotating speed for 300r/min, configures 10 kilograms of sizing materials, be not required to
It stands, is directly applied to the aerated blocks wall surface of 23 DEG C of environment temperature, thickness 1cm；
Condition 2：It by per kilogram powder amount of water than 0.6, uses rotating speed for 500r/min, configures 10 kilograms of sizing materials, be not required to
It stands, is directly applied to the aerated blocks wall surface of 23 DEG C of environment temperature, thickness 1cm；
Condition 3：It by per kilogram powder amount of water than 0.6, uses rotating speed for 700r/min, configures 10 kilograms of sizing materials, be not required to
It stands, is directly applied to the aerated blocks wall surface of 23 DEG C of environment temperature, thickness 1cm；
Condition 4：It by per kilogram powder amount of water than 0.6, uses rotating speed for 900r/min, configures 10 kilograms of sizing materials, be not required to
It stands, is directly applied to the aerated blocks wall surface of 23 DEG C of environment temperature, thickness 1cm；
By the comparison of the above different mixing speeds, reach 1cm thickness in construction thickness, after hardening in 2 hours, apparent effect
It is good, do not occur brushing gypsum face checking phenomenon.
Embodiment 3：
A kind of ardealite base lightweight wall plaster comprising the component of following parts by weight：60 parts of ardealite, 16 parts of coarse whiting,
11 parts of fine sand, 6 parts of grey calcium, 0.45 part of hydroxypropyl methyl cellulose, 0.22 part of calcium sulphate retarder, 0.09 part of K12 air entraining agents, Na bases
1.5 parts of modified alta-mud, 0.8 part of thixotropic agent, 6 parts of floating bead, 1.5 parts of MgO expansion agent, 2 parts of lignocellulosic, polypropylene are fine
1 part of dimension, 0.3 part of water-reducing agent.
The powder of aforementioned proportion is prepared into 100Kg, stirs 5 minutes and is uniformly mixed, respectively according to different forms of construction work into
Row plus water stir construction application：
Condition 1：It by per kilogram powder amount of water than 0.6, uses rotating speed for 500r/min, configures 50 kilograms of sizing materials, be not required to
It stands, by the way of artificial smearing construction, is directly applied to the aerated blocks wall surface of 23 DEG C of environment temperature, thickness 1cm；
Condition 2：It by per kilogram powder amount of water than 0.6, uses rotating speed for 500r/min, configures 50 kilograms of sizing materials, be not required to
It stands, by the way of machine spraying application, is painted on the aerated blocks wall surface of 23 DEG C of environment temperature, thickness 1cm；
By the comparison of the above different forms of construction work, reach 1cm thickness in construction thickness, after hardening in 2 hours, apparent effect
It is good, do not occur brushing gypsum face checking phenomenon.
Described above is only the embodiment of the present invention, and of course, the scope of rights of the present invention cannot be limited by this, therefore
According to equivalence changes made by scope of the present invention patent, still belong to protection scope of the present invention.
Claims (10)
1. a kind of crack resistence type phosphogypsum based plastering gypsum, it is characterised in that including following component, each component and each component
Mass fraction is：55~70 parts of ardealite, 15~25 parts of coarse whiting, 10~15 parts of fine sand, 5~8 parts of grey calcium, hydroxypropyl methyl fiber
0.4~0.6 part of element, 0.2~0.25 part of calcium sulphate retarder, 0.08~0.1 part of K12 air entraining agents, 1~2 part of Na bases modified alta-mud,
0.7~0.9 part of thixotropic agent, 5~8 parts of floating bead, 1~1.8 part of MgO expansion agent, 1~5 part of lignocellulosic, polypropylene fibre 1
~2 parts, 0.2~0.8 part of water-reducing agent.
2. crack resistence type phosphogypsum based plastering gypsum according to claim 1, it is characterised in that：The ardealite is warp
Cross drying, 175 DEG C of calcinings, not yet display the building β gypsum of curing, cooling temperature at 45~55 DEG C, compression strength >=
3.5MPa, 7.5 minutes presetting periods, final setting time 15 minutes, bulk density 780g/L.
3. crack resistence type phosphogypsum based plastering gypsum according to claim 1, it is characterised in that：Carbonic acid in the coarse whiting
For calcium content 98% or more, mesh number is 160~200 mesh.
4. crack resistence type phosphogypsum based plastering gypsum according to claim 1, it is characterised in that：The grey calcium is hydrogen-oxygen
Change the mixture of calcium, calcium oxide, coarse whiting, wherein content >=85% of calcium hydroxide, coarse whiting content≤5%, pH value 14.
5. crack resistence type phosphogypsum based plastering gypsum according to claim 1, it is characterised in that：The hydroxypropyl methyl
Cellulose is cold water instant dissolving modified cellulose, and viscosity is in 80000~100000mPa.s, gelling temp >=55 DEG C.
6. crack resistence type phosphogypsum based plastering gypsum according to claim 1, it is characterised in that：The Na bases are modified swollen
Profit soil is modified magnesium aluminium silicate, and water requirement >=500%, crystal structure is stratiform, and pH value is neutrality.
7. crack resistence type phosphogypsum based plastering gypsum according to claim 1, it is characterised in that：The thixotropic agent is to change
Property montmorillonite, bulk density be 520~580g/L.
8. crack resistence type phosphogypsum based plastering gypsum according to claim 1, it is characterised in that：The floating bead is closed pore
Structure, for mesh number in 50~70 mesh, bulk density is 200~250g/L.
9. crack resistence type phosphogypsum based plastering gypsum according to claim 1, it is characterised in that：The polypropylene fibre
Length is 3mm.
10. crack resistence type phosphogypsum based plastering gypsum according to claim 1, it is characterised in that：The water-reducing agent is
Melamine class powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810697164.2A CN108793917B (en) | 2018-06-29 | 2018-06-29 | Anti-cracking phosphogypsum-based plastering gypsum |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810697164.2A CN108793917B (en) | 2018-06-29 | 2018-06-29 | Anti-cracking phosphogypsum-based plastering gypsum |
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| CN108793917A true CN108793917A (en) | 2018-11-13 |
| CN108793917B CN108793917B (en) | 2021-06-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112125632A (en) * | 2020-10-10 | 2020-12-25 | 贵州贵安碳酸钙实业发展有限公司 | Glue-free gypsum and preparation method thereof |
| EP4382500A1 (en) * | 2022-12-09 | 2024-06-12 | "Elpologistyka" Spoka Z Ograniczona Odpowiedzialnoscia | Lightweight heat-insulating plaster |
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| CN101691292A (en) * | 2009-09-30 | 2010-04-07 | 谢日清 | Lightweight wall plaster |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112125632A (en) * | 2020-10-10 | 2020-12-25 | 贵州贵安碳酸钙实业发展有限公司 | Glue-free gypsum and preparation method thereof |
| EP4382500A1 (en) * | 2022-12-09 | 2024-06-12 | "Elpologistyka" Spoka Z Ograniczona Odpowiedzialnoscia | Lightweight heat-insulating plaster |
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| Publication number | Publication date |
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| CN108793917B (en) | 2021-06-25 |
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Denomination of invention: An anti cracking phosphogypsum based plastering gypsum Effective date of registration: 20230818 Granted publication date: 20210625 Pledgee: Wuhan area branch of Hubei pilot free trade zone of Bank of China Ltd. Pledgor: WUHAN WALLPRO HIGH TECHNOLOGY CO.,LTD. Registration number: Y2023420000328 |
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