CN101265069A - High-strength water-resistant plastering gypsum and producing method thereof - Google Patents
High-strength water-resistant plastering gypsum and producing method thereof Download PDFInfo
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- CN101265069A CN101265069A CNA2008100311630A CN200810031163A CN101265069A CN 101265069 A CN101265069 A CN 101265069A CN A2008100311630 A CNA2008100311630 A CN A2008100311630A CN 200810031163 A CN200810031163 A CN 200810031163A CN 101265069 A CN101265069 A CN 101265069A
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Abstract
The invention relates to a high-strength water-proof gypsum plaster and a production method thereof. The inventive high-strength water-proof gypsum plaster is made from the following materials in weight proportions: 10-99% of gypsum-based composite binding agent, 0-90% of aggregates, 0.08-4% of additives and 0-16.1% of adsorbent. The production method comprises the following steps: weighing raw materials at the given ratio, drying the aggregates, mixing all raw materials, and packaging. The inventive high-strength water-proof gypsum plaster has high strength and good water resistance; can be made from chemical gypsum materials without needing calcination, such as desulfurized gypsum, phosphogypsum, fluorgypsum and citric acid gypsum; and has the advantages of low production cost, energy conservation, discharge reduction and environmental friendliness.
Description
Technical field
The present invention relates to compound coating material of a kind of high-strength waterproof gypsum base and production method thereof, specifically, relate to a kind of high strong water resistant brushing gypsum and production method of wiping one's face in inner wall of building, exterior wall and shingle surface thereof that be used for
Background technology
Brushing gypsum has with the base material bonding firm, and fast solidifying does not shrink during setting and harden, easy construction, characteristics such as working efficiency height can avoid that cracking, hollowing appear in traditional cement sand plaster layer, the shortcoming that comes off, and are specially adapted to wiping one's face of gas concrete metope and shear wall metope.Abroad, the use of brushing gypsum is quite general, and as Germany, the plastering material more than 70% is a brushing gypsum, and Britain's brushing gypsum is 50% of a gypsum total amount.The research and development of China's brushing gypsum start from the beginning of the eighties in last century, four big classes have now been formed, ten kinds, ten kind brushing gypsums of this four big class are classified from the gypsum powder phase composite, i.e. half water brushing gypsum, II type anhydrite whitewashes gypsum, Mixed-Phase Plastering Gypsum (semi-hydrated gypsum and anhydrite II-s mixing brushing gypsum, early stage, intensity was obtained by the semi-hydrated gypsum aquation, and later stage intensity is obtained by anhydrite II-s aquation, make on the brushing gypsum behind the wall, have successive hydration process and gain in strength process), and gypsum, the lime mixed plaste for plastering.In first three class brushing gypsum, can be divided into surface layer, bottom and insulation brushing gypsum again, and gypsum, lime mixed plaste for plastering only are applicable to surface layer, have constituted the brushing gypsum of ten kinds.
In above-mentioned ten kinds of brushing gypsums, behind the brushing gypsum hydration and hardening, its basic structure is dihydrate gypsum, and dihydrate gypsum intensity is low, water resistance is poor (coefficient of softening is low), and needs calcining, production cost height.China territory is vast, thing, north-south climate are widely different, the Northwest is short of rain, dry air, and southern area is rainy, there was dampness in the air, plum rain season particularly, relative air humidity be more than 80%, and no matter the north and south, its kitchen and toilet always are in the damp atmosphere state, and traditional brushing gypsum should not use in these environment.Therefore, need to improve the water resistance of brushing gypsum.
Moreover the at present annual industry byproduct phosphogypsum of China has 2,000 ten thousand tons, and with annual 15% speed increment; The annual desulfurated plaster that produces has 4,000,000 tons, and also will increase desulfurated plaster newly more than 2,000 ten thousand tons every year after 2010; And, (wherein fluorgypsum is a dehydrated gyp-to also have a large amount of fluorgypsums, lemon gypsum, boron gypsum, titanium gypsum, salt gypsum etc., dehydrated gyp-is also referred to as anhydrite, desulfurated plaster, phosphogypsum, lemon gypsum, boron gypsum, titanium gypsum and salt gypsum etc. are dihydrate gypsum), these industry byproduct gypsum claim chemical gypsum again, only have to be used for cement additire on a small quantity, and majority is in the stacking state, not only take a large amount of soils, and contaminate environment and groundwater resource.
Summary of the invention
The objective of the invention is to overcome some defectives that existing brushing gypsum exists; a kind of high strong water resistant brushing gypsum is provided; and can utilize desulfurated plaster, phosphogypsum, fluorgypsum, lemon gypsum etc. to need not the incinerating chemical gypsum to be prepared as starting material; both can reduce the production cost of brushing gypsum; help energy-saving and emission-reduction again, the protection environment.
The objective of the invention is to be achieved through the following technical solutions:
The present invention's high strong water resistant brushing gypsum is made up of following material and weight proportion: gypsum base composite gelled material 10%～99% (preferred 40%～70%), aggregate 0～90% (preferred 30%～69%), additive 0.08～4%, sorbent material 0～16.1%;
Described gypsum base composite gelled material is made up of following constituent materials: mixed gypsum powder 40%～80% (preferred 50%～70%), active admixture 10%～45% (preferred 15%～35%), alkali-activator 4%～15% (preferred 6%～12%), re-dispersible glue powder 0.1%～2%, setting accelerator 0%～6% (preferred 1%～3%), lime 0～5%, hardening accelerator 0～1%, water reducer 0～1%, fiber 0～1.0%;
Described mixed gypsum powder is to be selected from a kind of in dihydrate gypsum powder, the anhydrite powder or their mixture;
Described dihydrate gypsum powder can be natural dihydrate gypsum powder, desulfurated plaster powder, pretreated phosphogypsum powder or pretreated lemon terra alba; Screening formulation, dihydrate gypsum: anhydrite=30%～90%: 10%～70%; Can add in case of necessity 0～15% semi-hydrated gypsum (
Or
); Powder size 60 orders～500 orders (preferred 80 orders～200 orders);
Described anhydrite powder is the dehydrated gyp-of levigated fluorgypsum or direct grinding, or dihydrate gypsum is through the anhydrite II of 360～1000 ℃ of calcining formation, slow dissolubility anhydrite II-S comprising 360～500 ℃ of calcining formation, 500～700 ℃ of insoluble anhydrite II-U that calcining forms, 700～1000 ℃ of cast anhydrite II-E that calcining forms; Fluorgypsum, anhydrite II-S, anhydrite II-E granularity are 80～300 orders (preferred 100～250 orders); The granularity of natural anhydrite, anhydrite II-U is that granularity is 100～500 orders (250～400 orders);
Described active powder (pouring gypsum) is for being selected from one or more the mixture in levigate water-granulated slag (being levigate blast furnace slag), fine-ground fly-ash, levigate iron-tion slag, levigate ferroalloy slag, levigate lithium white residue powder, silicon ash, the levigate Fluorspar Powder, preferred version is the compound of flyash and water-granulated slag, more preferably scheme is, mix material proportioning is a flyash: water-granulated slag=1: 1;
Described alkali-activator is silicate cement, aluminosulfate cement, aluminate cement, stone, alkaline residue or carbide slag;
Described setting accelerator is for being selected from Na
2SO
4, K
28O
4, NaHSO
4, KHSO
4, CuSO
4, FeSO
4, AL
2(SO
4)
3, ZnSO
4, KAL (SO
4)
212H
2O), K
2Cr
2O
7In one or more mixture, preferred NaHSO
4, Na
2SO
4, KAL (SO
4)
212H
2O), K
2Cr
2O
7In one or more mixture; The setting accelerator grinding is to granularity 〉=100 orders;
Described sorbent material is an activated attapulgite, and activated attapulgite can use one or more the mix powder in chabazite, mordenite, gac, montmorillonite, sepiolite powder, the diatomite to replace; The brushing gypsum that adds sorbent material, the obnoxious flavour in the energy absorption chamber is as formaldehyde, benzene, dimethylbenzene, ammonia, carbon monoxide etc., so be called ecological brushing gypsum.
Described hardening accelerator, water reducer are known cement early strength agent, water reducer;
Described aggregate is a quartz sand or/and limestone powder, and particle diameter is less than 4mm;
Described additive is a kind of in methylcellulose gum MC, air entrapment agent, starch ethers, thixotroping lubricant, the defoamer or several mixture; Methylcellulose gum MC can use hydroxyethylmethyl-cellulose ether MHEC, hydroxypropyl methyl cellulose ether (MHPC), Natvosol (HEC) to replace;
Described air entrapment agent is known air entrapment agent, and it is a kind of additive that can introduce the micro-bubble that is evenly distributed in a large number, stablizes and seal in the mortar whipping process, as mortar foaming agent.
Production method: each raw material is pressed the preset blending ratio computation weigh, and, then all raw materials are mixed the aggregate oven dry, packing.
The present invention is a main raw material with dehydrated gyp-, dihydrate gypsum and active admixture, adding alkali-activator excites, the dehydrated gyp-dissolving, generation is a structural framework with dihydrate gypsum crystal and small amount of calcium aluminite crystal, unhydrated dihydrate gypsum particle, dehydrated gyp-particle and active admixture particle are filled in the space as micro-aggregate, and the cohesive action of dissolved dihydrate gypsum, hydrated silicate or aluminate combines each constituent materials, form the gypsum based composite microstructure of hardenite.This microstructure makes brushing gypsum have water tolerance and high intensity preferably.Because the hydrated product of gypsum hardenite is the dihydrate gypsum crystal of poor water resistance; and the hardenite of the composite gelled material that gypsum and active admixture and exciting agent form has increased the low hydraulic silicate gel of a spot of solubleness or aluminate gel and a spot of ettringite; and part silicate gel or aluminate gel coating are at dihydrate gypsum crystal and unhydrated dihydrate gypsum and dehydrated gyp-particle surface; dihydrate gypsum and dehydrated gyp-are played the parcel provide protection; stop and weaken the erosion action of water, thereby improved the water tolerance and the intensity of brushing gypsum gypsum.By controlling the ratio of each constituent materials, the ettringite that generates in the gypsum based composite seldom can not produce destruction to the gypsum based composite hardenite.
The present invention also can utilize desulfurated plaster, phosphogypsum, fluorgypsum, lemon gypsum etc. to need not incinerating industry byproduct gypsum and be prepared as starting material; both can reduce the production cost of brushing gypsum; help energy-saving and emission-reduction again; and reduce industry byproduct gypsum land occupation resource and, help protecting environment the pollution of water resources.
Embodiment
The invention will be further described below in conjunction with embodiment.
(1) the brushing gypsum body material is optimized proportioning test embodiment (1)
Raw material: gypsum base is natural dihydrate gypsum powder, natural anhydrite powder (granularity is 100 orders), and active admixture is levigate water-granulated slag, and alkali-activator is a silicate cement (325
#), setting accelerator is alum [KAl (SO
4)
212H
2O] (granularity 100 orders), methylcellulose gum MC, re-dispersible glue powder, the weight ratio of each component raw material is:
Dihydrate gypsum: anhydrite: water-granulated slag: cement: alum: MC: re-dispersible glue powder
1
#＝63.6 ∶0 ∶27.3 ∶9.1?∶3.0?∶0.1∶1.0
2
#＝58.6 ∶5 ∶27.3 ∶9.1?∶3.0?∶0.1∶1.0
3
#＝53.6 ∶10 ∶27.3 ∶9.1?∶3.0?∶0.1∶1.0
4
#＝43.6 ∶20 ∶27.3 ∶9.1?∶3.0?∶0.1∶1.0
5
#＝38.6 ∶25 ∶27.3 ∶9.1?∶3.0?∶0.1∶1.0
6
#＝31.8 ∶3.18 ∶27.3 ∶9.1?∶3.0?∶0.1∶1.0
7
#＝28.6?∶35 ∶27.3∶9.1∶3.0∶0.1∶1.0
8
#＝23.6?∶40 ∶27.3∶9.1∶3.0∶0.1∶1.0
9
#＝18.6?∶45 ∶27.3∶9.1∶3.0∶0.1∶1.0
10
#＝13.6∶50 ∶27.3∶9.1∶3.0∶0.1∶1.0
11
#＝0 ∶63.6∶27.3∶9.1∶3.0∶0.1∶1.0
By said ratio, take by weighing raw material, mix, add water and stir, water cement ratio 0.35, casting, die size 40 * 40 * 160mm presses GB/T1346-2001 and measures time of coagulation, press GB/T17671-1991 and measure bending in 28 days, ultimate compression strength, and measure soaked 72 hours wet compression intensity (calculating coefficient of softening), and press the degree of mobilization that GB/T2419-2005 measures brushing gypsum, press JC/T517-93 or DIN1168-2 standard testing cohesive strength.Experimental result sees Table 1.
Table 1 brushing gypsum body material is optimized (one) experimental result
Table 1 is brushing gypsum body material optimization experiment result, as can be seen, removes 1
#And 2
#Outside the sample, 3
#～11
#Sample all satisfies the JC/T517-93 standard, and bending resistance, ultimate compression strength, cohesive strength far surpass the JC/T517-93 standard, and water resistance is good.This experiment determines in this high strong water resistant brushing gypsum constituent materials, and the span of anhydrite is greater than 5%, therefore, and 3
#～11
#The weight proportion of the stock blend material of sample can be used as the weight proportion of the surface component material of brushing gypsum, and promptly the volume of anhydrite should be more than or equal to 10%.
(2) the brushing gypsum body material is optimized proportioning test embodiment (2)
Raw material: with desulfurated plaster (water ratio 0.5%, granularity 200 orders) replace dihydrate gypsum, with 900 ℃ of incinerating phosphogypsum (anhydrite II-E, granularity 200 orders) replace anhydrite, active admixture is levigate water-granulated slag and 1: 1 mixture of fine-ground fly-ash, and alkali-activator is a silicate cement (325
#), setting accelerator be alum and 1: 1 mixture of sodium sulfate ((granularity 120 orders), Mc, re-dispersible glue powder, the weight proportion of each component raw material is:
Desulfurated plaster: anhydrite II-E: active admixture: cement: setting accelerator: Mc: re-dispersible glue powder
12
#＝40.45 ∶40.45 ∶10 ∶9.1?∶4.0 ∶0.1∶1.0
13
#＝37.95 ∶37.95 ∶15 ∶9.1?∶4.0 ∶0.1∶1.0
14
#＝35.45 ∶35.45 ∶20 ∶9.1?∶4.0 ∶0.1∶1.0
15
#＝30.45 ∶30.45 ∶27.3 ∶9.1?∶4.0 ∶0.1∶1.0
16
#＝25.45 ∶25.45 ∶40 ∶9.1?∶4.0 ∶0.1∶1.0
17
#＝20.45 ∶20.45 ∶50 ∶9.1?∶4.0 ∶0.1∶1.0
18
#＝33.45 ∶33.45 ∶27.3 ∶3.1?∶4.0 ∶0.1∶1.0
19
#＝31.95 ∶31.9 ∶27.3 ∶6.1?∶4.0 ∶0.1∶1.0
20
#＝30.45 ∶30.45 ∶27.3 ∶9.1?∶4.0 ∶0.1∶1.0
21
#＝28.95 ∶28.95 ∶27.3 ∶12.1∶4.0 ∶0.1∶1.0
22
#＝27.45 ∶27.45 ∶27.3 ∶15.1∶4.0 ∶0.1∶1.0
23
#＝25.95 ∶25.95 ∶27.3 ∶18.1∶4.0 ∶0.1∶1.0
Take by weighing starting material by said ratio, add water and stir, water cement ratio 0.35, casting is pressed GB/T17671-1999 and is measured 28 days flexural strengths of sample and compressive strength, coefficient of softening, presses DIN1168-2 mensuration cohesive strength, and experimental result sees Table 2.
Table 2 brushing gypsum body material optimization experiment (two) experimental result
Table 2 is the experimental result of constituent materials active admixture and cement mixing content in the high strong water resistant brushing gypsum, table 2 prompting: along with the increase of active admixture volume, intensity increases, and coefficient of softening improves, when active admixture increases to 40% (16
#), the intensity maximum also increases but expand, and sample soaks 30 days in water after, tiny crack appears in specimen surface, so the active admixture volume should be less than 40%.Table 2 is also pointed out on the other hand: along with the increase of cement mixing content, intensity improves, and coefficient of softening increases, but when cement mixing content increased to 15%, sample soaked in water 30 days, and local tiny crack appears in the surface, when cement mixing content increased to 18%, sample soaked in water 30 days, and crackle appears in specimen surface, in conjunction with coefficient of softening, the intensity analysis-by-synthesis is in the brushing gypsum body material, active admixture should be greater than 15%, less than 40%, cement mixing content should be less than or equal to 15% greater than 6%.
(3) high strong water resistant bottom layer brushing gypsum aggregate is optimized proportioning test embodiment
Raw material: use through pretreated phosphogypsum (granularity 150 orders) to replace dihydrate gypsum, 700 ℃ of incinerating desulfurated plasters (hard desulfurated plaster II-E, granularity 250 orders) replace anhydrite, and alkali-activator is an aluminate cement (425
#), active admixture is levigate water-granulated slag, setting accelerator is alum (granularity 100 orders), aggregate select for use medium sand (particle diameter≤2.5mm), MC, re-dispersible glue powder, air entrapment agent, their weight proportion is:
Dihydrate gypsum: anhydrite II-E: water-granulated slag: cement: alum: MC: re-dispersible glue powder: air entrapment agent: medium sand
24
#＝31.8 ∶31.8 ∶27.3 ∶9.1?∶4.0?∶0.3∶2.0 ∶0.02 ∶0
25
#＝31.8 ∶31.8 ∶27.3 ∶9.1?∶4.0?∶0.3∶2.0 ∶0.02 ∶50
26
#＝31.8 ∶31.8 ∶27.3 ∶9.1?∶4.0?∶0.3∶2.0 ∶0.02 ∶100
27
#＝31.8 ∶31.8 ∶27.3 ∶9.1?∶4.0?∶0.3∶2.0 ∶0.02 ∶150
28
#＝31.8 ∶31.8 ∶27.3 ∶9.1?∶4.0?∶0.3∶2.0 ∶0.02 ∶200
29
#＝31.8 ∶31.8 ∶27.3 ∶9.1?∶4.0?∶0.3∶2.0 ∶0.02 ∶300
30
#＝31.8 ∶31.8 ∶27.3 ∶9.1?∶4.0?∶0.3∶2.0 ∶0.02 ∶350
Take by weighing starting material by said ratio, mix, adding water stirs, water cement ratio 0.40, casting is measured its 28 days flexural strengths, compressive strength, coefficient of softening by GB/T17671-1999, presses DIN1168-2 and measures cohesive strength, press GB/T1346-2001 and measure time of coagulation, experimental result sees Table 3.
Table 3 high strong water resistant bottom layer brushing gypsum optimization experiment result
Table 3 has provided aggregate ratio optimization experimental result, and as can be seen: along with the increase of aggregate ratio, flexural strength reduces, and compressive strength increases afterwards earlier and reduces, and cohesive strength reduces, when the aggregate proportioning increases to 73.8% (29
#Prescription) time, construction is just difficult, so the aggregate proportioning should not surpass 73.8%.
The product that does not add aggregate as (one), (two) embodiment product, is particularly suitable for the usefulness of whitewashing as the top layer
Be added with the product of aggregate,, be particularly suitable for usefulness as bottom layer brushing as (three) embodiment product.
(4) the ecological brushing gypsum embodiment of high strong water resistant
The activated processing of attapulgite clay (abbreviation activated attapulgite) is to airborne organic pollutant, formaldehyde, benzene, dimethylbenzene, ammonia, hydrogen sulfide, carbon monoxide have stronger adsorptive power, in brushing gypsum, add the activation attapulgite clay, adsorbable indoor furniture evaporable formaldehyde, benzene, ammonia and other obnoxious flavoures, as radon gas, hydrogen sulfide and carbon monoxide etc., thereby develop ecological brushing gypsum.
Raw material: replace dihydrate gypsum with desulfurated plaster (water ratio 1%, granularity 200 orders), replace anhydrite (granularity 200 orders) with anhydrite II-S, active admixture is levigate water-granulated slag, and alkali-activator is 325
#Cement, setting accelerator are alum (granularity 100 orders), and sorbent material is an activated attapulgite, Mc, and re-dispersible glue powder, the weight proportion of each constituent materials is:
Desulfurated plaster: anhydrite II-S: water-granulated slag: cement: alum: MC: re-dispersible glue powder: active attapulgite stone
40
#＝43.6 ∶20 ∶27.3 ∶9.1?∶3.0?∶0.1∶1.0 ∶0
41
#＝43.6 ∶20 ∶27.3 ∶9.1?∶3.0?∶0.1∶1.0 ∶3.0
42
#＝43.6 ∶20 ∶27.3 ∶9.1?∶3.0?∶0.1∶1.0 ∶10.0
43
#＝43.6 ∶20 ∶27.3 ∶9.1?∶3.0?∶0.1∶1.0 ∶15.0
44
#＝43.6 ∶20 ∶27.3 ∶9.1?∶3.0?∶0.1∶1.0 ∶20.0
45
#=43.6: 20: 27.3: 9.1: 3.0: 0.1: 1.0: 15 (diatomite)
By said ratio, take by weighing starting material, mix, add water and stir water cement ratio 0.35, casting, die size: 40 * 40 * 160mm, measure its bending in 28 days, ultimate compression strength by GB/T17671-1999, and measure soaked 72 hours wet tenacity (calculating coefficient of softening), experimental result sees Table 4:
(continued on next page)
The ecological brushing gypsum mechanical property experimental results of table 4
Table 4 is ecological brushing gypsum mechanical property experimental results, as can be seen along with the increase of attapulgite clay content, the mechanical property of brushing gypsum obviously reduces, particularly when the weight fraction of attapulgite clay reaches 16.1%, ultimate compression strength is reduced to 9.0Mpa, replace attapulgite clay that similar character is also arranged with diatomite, so the weight fraction of the gypsum base composite gelled material in ecological brushing gypsum is greater than 2%, less than 16.1%, activated attapulgite or diatomite can be added in bottom and the surface layer brushing gypsum, obnoxious flavour in the adsorption chamber improves IAQ (indoor air quality).
Claims (10)
1, a kind of high-strength water-resistant plastering gypsum is characterized in that, is made up of following material and weight proportion: gypsum base composite gelled material 10%～99%, aggregate 0～90%, additive 0.08～4%, sorbent material 0～16.1%;
Described gypsum base composite gelled material is made up of following constituent materials: mixed gypsum powder 40%～80%, active admixture 10%～45%, alkali-activator 4%～15%, re-dispersible glue powder 0.1%～2%, setting accelerator 0%～6%, lime 0～5%, hardening accelerator 0～1%, water reducer 0～1%, fiber 0～1.0%;
Described mixed gypsum powder is to be selected from a kind of in dihydrate gypsum powder, the anhydrite powder or their mixture; Described dihydrate gypsum powder is natural dihydrate gypsum powder, desulfurated plaster powder, pretreated phosphogypsum powder or pretreated lemon terra alba, powder size 60 orders～500 orders;
Described anhydrite is the levigated fluorgypsum, directly the dehydrated gyp-or the dihydrate gypsum of grinding are calcined the anhydrite II that forms through 360～1000 ℃, slow dissolubility anhydrite II-S comprising 360～500 ℃ of calcining formation, 500～700 ℃ of insoluble anhydrite II-U that calcining forms, 700～1000 ℃ of cast anhydrite II-E that calcining forms; Fluorgypsum, anhydrite II-S, anhydrite II-E granularity are 80～300 orders, and the granularity of natural anhydrite, anhydrite II-U is 100～500 orders;
Described active powder is one or more the mixture that is selected from levigate water-granulated slag, fine-ground fly-ash, levigate iron-tion slag, levigate ferroalloy slag, levigate lithium white residue powder, silicon ash, the levigate Fluorspar Powder;
Described alkali-activator is silicate cement, aluminosulfate cement, aluminate cement, lime, alkaline residue or carbide slag;
Described setting accelerator is for being selected from Na
2SO
4, K
28O
4, NaHSO
4, KHSO
4, CuSO
4, FeSO
4, AL
2(SO
4)
3, ZnSO
4, KAL (SO
4)
212H
2O), K
2Cr
2O
7In one or more mixture; Setting accelerator grinding to granularity is 〉=100 orders;
Described sorbent material is an activated attapulgite;
Described aggregate is a quartz sand or/and limestone powder, and particle diameter is less than 4mm;
Described additive is a kind of in methylcellulose gum MC, air entrapment agent, starch ethers, thixotroping lubricant, the defoamer or several mixture.
2, high-strength water-resistant plastering gypsum according to claim 1 is characterized in that, described gypsum base composite gelled material proportioning is 40%～70%, and the aggregate proportioning is 30%～69%.
3, high-strength water-resistant plastering gypsum according to claim 1 and 2, it is characterized in that, mixed gypsum powder proportioning in the described gypsum base composite gelled material is 50%～70%, the active admixture proportioning is 15%～35%, the alkali-activator proportioning is 6%～12%, and the setting accelerator proportioning is 1%～3%.
4, high-strength water-resistant plastering gypsum according to claim 1 and 2 is characterized in that, in the described mixed gypsum powder, and dihydrate gypsum: anhydrite=30%～90%: 10%～70%; Dihydrate gypsum powder degree is 80 orders～200 orders; In the anhydrite, fluorgypsum, anhydrite II-S, anhydrite II-E granularity are 100～250 orders, and the granularity of natural anhydrite, anhydrite II-U is 250～400 orders.
5, high-strength water-resistant plastering gypsum according to claim 1 and 2 is characterized in that, in the described mixed gypsum powder, also contains 0～15% semi-hydrated gypsum.
6, high-strength water-resistant plastering gypsum according to claim 1 and 2 is characterized in that, described active powder is the compound of flyash and water-granulated slag.
7, high-strength water-resistant plastering gypsum according to claim 6 is characterized in that, the mix material proportioning of described flyash and water-granulated slag is flyash: water-granulated slag=1: 1.
8, high-strength water-resistant plastering gypsum according to claim 1 and 2, it is characterized in that the mix powder of one or more in described activated attapulgite chabazite, mordenite, gac, montmorillonite, sepiolite powder, the diatomite replaces.
9, high-strength water-resistant plastering gypsum according to claim 1 and 2 is characterized in that, described methylcellulose gum MC replaces with hydroxyethylmethyl-cellulose ether MHEC, hydroxypropyl methyl cellulose ether MHPC or Natvosol HEC.
10, according to the production method of one of claim 1-8 described high-strength water-resistant plastering gypsum, it is characterized in that, each raw material is pressed the preset blending ratio computation weigh, and, then all raw materials are mixed the aggregate oven dry.
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| CN101265069A true CN101265069A (en) | 2008-09-17 |
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| CN101723625B (en) * | 2008-10-28 | 2012-07-25 | 武汉菲凡士建材有限公司 | Abrasion proof ground material |
| CN102041869A (en) * | 2009-10-16 | 2011-05-04 | 孙凯 | Mixed gypsum wallboard |
| CN102041869B (en) * | 2009-10-16 | 2014-08-06 | 孙凯 | Mixed gypsum wallboard |
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| CN102241487A (en) * | 2011-03-29 | 2011-11-16 | 丁立峰 | Modified gypsum, preparation method and preparation system for the same |
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| CN104478385A (en) * | 2014-12-08 | 2015-04-01 | 上海贝恒化学建材有限公司 | Water-retaining plastering anhydrite and preparation method thereof |
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| CN106699089A (en) * | 2015-08-14 | 2017-05-24 | 美丽佳建材（北京）有限公司 | Novel energy-saving and environment-friendly waterproof plastering gypsum and preparation method thereof |
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Effective date of registration: 20101216 Address after: 410205 Hunan province Changsha Lujing Road No. 2 Changsha Productivity Promotion Center on the third floor of building wealth Applicant after: Shangcha Guiyi Building Materials Co., Ltd. Address before: 410012 Science Park, National University Park, Xiaoxiang Road, Changsha, Yuelu District, Hunan Applicant before: Shi Zongli Co-applicant before: Liu Wenwei Co-applicant before: Zhu Guihua Co-applicant before: Li Fuyuan Co-applicant before: Liang Jian |
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Application publication date: 20080917 |