CN1218900C - Whitewashing gypsum and preparing method thereof - Google Patents
Whitewashing gypsum and preparing method thereof Download PDFInfo
- Publication number
- CN1218900C CN1218900C CN 03125477 CN03125477A CN1218900C CN 1218900 C CN1218900 C CN 1218900C CN 03125477 CN03125477 CN 03125477 CN 03125477 A CN03125477 A CN 03125477A CN 1218900 C CN1218900 C CN 1218900C
- Authority
- CN
- China
- Prior art keywords
- gypsum
- anhydrite
- water
- mixing
- kinds
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
- C04B28/16—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 containing anhydrite, e.g. Keene's cement
-
- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
Abstract
The present invention relates to construction plastering gypsum and a preparation method thereof. The construction plastering gypsum comprises 3 to 13 of hemihydrate gypsum and 0.1 to 0.3 of water holding agents by weight. The present invention is characterized in that 80 to 90 of anhydrite powder and 1 to 7 of excitants (by weight) are also added into the raw materials. The preparation method has the steps: 1, natural anhydrite is milled into powder by an industrial ball mill, the fineness is controlled at 200 meshes, the sieve residue is smaller than 3%, and the specific surface area is between 4500 and 7000cm<2>/g; 2, the raw materials are prepared, i.e. 80 to 90 of anhydrite powder, 3 to 13 of hemihydrate gypsum, 1 to 7 of excitants and 0.1 to 0.3 of water holding agents by weight are prepared, and in addition, hydraulicity cementing materials which account for 0 to 15 of the total weight percentage can be added into the raw materials; 3, the raw materials are respectively weighed and are thoroughly mixed in a material mixer, and plastering gypsum surface layer powder is obtained. Fine sand smaller than 5mm can be added into the mixed materials according to requirements to be made into plastering gypsum bottom layer materials. The present invention improves the water resistance performance of the construction plastering gypsum, and reduces the production cost, and the preparation method is simple.
Description
Technical field
The invention belongs to building material technical field, particularly a kind of building brushing gypsum and preparation method thereof.
Background technology
Whitewash engineering and be the important component part in the construction work, up to now, the plastering material overwhelming majority that China adopts is sand-cement slurry, cement mixing mortar and lime, the shortcoming of these traditional plastering materials is that drying shrinkage is big, cohesive force is poor, so hollowing, disadvantages such as cracking are difficult to avoid, and influence the fitting-out work quality.Brushing gypsum has fast solidifying, light weight, energy-conservation, fine and smooth, cohesive strength is high, hollowing cracking, characteristics such as fire resistance is good are a kind of novel plastering materials of superior performance.Become the main flow of wall plastering in industrially developed country's development rapidly.China's gypsum resource is very abundant, has also paid attention to the Application and Development of brushing gypsum over past ten years, mixes the manufacturing brushing gypsum with semi-hydrated gypsum but mainly concentrate on the independent preparation of semi-hydrated gypsum or by the dehydrated gyp-that dihydrate gypsum is sintered into.As application for a patent for invention number 02136118.5 and 02111055.7, building material industry standard JC/T517-93 is also at above-mentioned brushing gypsum establishment.
The weak point because semi-hydrated gypsum condenses, therefore poor water retention property needs to add very expensive water-holding agent of price and retardant aborning, accounts for the 40-50% of product cost, it is higher to adopt incinerating semi-hydrated gypsum and dehydrated gyp-production brushing gypsum to exist energy consumption, the shortcoming that the water tolerance of product is low.
Summary of the invention
The object of the present invention is to provide a kind of brushing gypsum that improves the brushing gypsum water tolerance, reduces production costs and preparation method thereof.
To achieve these goals, technical scheme of the present invention is: a kind of brushing gypsum, and it comprises semi-hydrated gypsum and water-holding agent, it is characterized in that: also add anhydrite powder and exciting agent, the per-cent of the shared gross weight of each component is:
Anhydrite powder 80-90, semi-hydrated gypsum 3-13, exciting agent 1-7, water-holding agent 0.1-0.3, exciting agent comprises sylvite series exciting agent, calcined alunite breeze, calcine in industrial alunite, the transition metal sulfate any one or the mixing more than two kinds, is any proportioning during mixing more than two kinds.
Also add hydraulicity cement in the aforesaid component, the per-cent that hydraulicity cement accounts for gross weight is 0-15, hydraulicity cement comprises: when any one or the mixing more than two kinds in cement, water-granulated slag, the flyash, mixing more than two kinds is any proportioning.
Water-holding agent adopts in methylcellulose gum (MC), Vltra tears (HPMC), hydroxyethylmethyl-cellulose (HEMC), the treated starch any one or the mixing more than two kinds, is any proportioning during mixing more than two kinds.
Anhydrite powder is for to utilize industrial ball mill grinding with natural anhydrite, and fineness is controlled at 200 mesh sieve surpluses less than 3%, and specific surface area is at 4500-7000cm
2/ g.
Preparation method of the present invention is: realized by following steps: 1). natural anhydrite is utilized industrial ball mill grinding, and fineness is controlled at 200 mesh sieve surpluses less than 3%, and specific surface area is at 4500-7000cm
2/ g; 2). raw material is prepared: per-cent by weight, anhydrite powder 80-90, semi-hydrated gypsum 3-13, exciting agent 1-7, water-holding agent 0.1-0.3; Also add hydraulicity cement, the per-cent that hydraulicity cement accounts for gross weight is 0-15; 3). above-mentioned each raw material is measured respectively, thorough mixing in mixer, the surface layer brushing gypsum.
Add in the aforesaid mixture and make bottom layer brushing gypsum less than the fine sand of 5mm, the 1-2 that is added to the said mixture material of fine sand doubly.
The present invention is that the employing natural anhydrite is the raw material production brushing gypsum, and its purpose is to improve the brushing gypsum water tolerance, does not need to add retardant, reduces the water-holding agent consumption, thereby reduces production costs, and improves the market competitiveness.The water-holding agent add-on that the retardant that no price is very expensive, price are very expensive is very little, thereby reduces production costs widely.China's anhydrite reserves are very abundant, account for 1/3rd of gypsum total amount, and natural anhydrite has potential hydration activity, need not calcining, and under certain admixture excitation, its product has the hardening strength height, water-tolerant, the characteristics that time of coagulation is suitable.To in the brushing gypsum product, occupy an important position.Its preparation method is simple.
Embodiment
Embodiment 1:
Surface layer brushing gypsum: per-cent by weight, anhydrite powder 86, semi-hydrated gypsum 3, cement 9.35, sylvite series exciting agent 1.5, methylcellulose gum (MC) water-holding agent 0.15.
The preparation method is: 1). natural anhydrite is utilized industrial ball mill grinding, and it is 2.5% that fineness is controlled at 200 mesh sieve surpluses, and specific surface area is at 6000cm
2/ g.2). raw material is prepared: per-cent by weight, anhydrite powder 86, semi-hydrated gypsum 3, cement 9.35, sylvite series exciting agent 1.5, methylcellulose gum (MC) water-holding agent 0.15.3)。Above-mentioned each raw material is measured respectively, thorough mixing in mixer, the surface layer brushing gypsum.
The construction water amount is the standard water consumption calculating of 165 ± 5mm by the slip diffusion diameter, constructs after 24 hours, and suitable wet curing at interval makes the abundant aquation of anhydrite, thereby produces higher intensity and better water tolerance.
Embodiment 2:
Bottom layer brushing gypsum: per-cent by weight, anhydrite powder 85, semi-hydrated gypsum 3, cement 9.35, calcined alunite breeze 2.5, Vltra tears (HPMC) 0.15, the said mixture material with less than the weight ratio of the fine sand of 5mm 1: 1.5.
Its preparation method is: 1). natural anhydrite is utilized industrial ball mill grinding, and fineness is controlled at 200 mesh sieve surpluses less than 2.5%, and specific surface area is at 6000cm
2/ g.2). raw material is prepared: per-cent by weight, anhydrite powder 85, semi-hydrated gypsum 3, cement 9.35, calcined alunite breeze 2.5, Vltra tears (HPMC) 0.15, the said mixture material with less than the weight ratio of the fine sand of 5mm 1: 1.5.3). above-mentioned each raw material is measured respectively, thorough mixing in mixer, bottom layer brushing gypsum.
The construction water amount is the standard water consumption calculating of 165 ± 5mm by the slip diffusion diameter, constructs after 24 hours, and suitable wet curing at interval makes the abundant aquation of anhydrite, thereby produces higher intensity and better water tolerance.
Embodiment 3:
The surface layer brushing gypsum: per-cent by weight, anhydrite powder 88.8, semi-hydrated gypsum 8 is calcined industrial alunite 3, hydroxyethylmethyl-cellulose (HEMC) 0.2.
Its preparation method is: 1). natural anhydrite is utilized industrial ball mill grinding, and it is 2.6% that fineness is controlled at 200 mesh sieve surpluses, and specific surface area is at 5000cm
2/ g; 2). raw material is prepared: per-cent by weight, anhydrite powder 88.8, semi-hydrated gypsum 8 is calcined industrial alunite 3, hydroxyethylmethyl-cellulose (HEMC) 0.2; 3). above-mentioned each raw material is measured respectively, thorough mixing in mixer, the surface layer brushing gypsum.
The construction water amount is the standard water consumption calculating of 165 ± 5mm by the slip diffusion diameter, constructs after 24 hours, and suitable wet curing at interval makes the abundant aquation of anhydrite, thereby produces higher intensity and better water tolerance.
| Initial set | Final set | 7 days anti-folding MPa | 7 days resistance to compression MPa | 28 days anti-folding MPa | 28 days resistance to compression MPa | |
| Embodiment 1 | 2:10 | 4:50 | 2.85 | 14.2 | 5.52 | 21.8 |
| Embodiment 2 | 1:50 | 4:03 | 1.35 | 6.6 | 2.75 | 11.9 |
| Embodiment 3 | 2:00 | 4:00 | 1.65 | 12.8 | 4.19 | 19.4 |
Embodiment 4:
Bottom layer brushing gypsum: per-cent by weight, anhydrite powder 85, semi-hydrated gypsum 5, water-granulated slag and flyash (the two is any proportioning) 7.3, calcined alunite breeze and transition metal sulfate (the two is any proportioning) 2.5, hydroxyethylmethyl-cellulose (HEMC) and treated starch (the two is any proportioning) 0.2, the said mixture material with less than the weight ratio of the fine sand of 5mm 1: 1.5.
Preparation method of the present invention is: realized by following steps: 1). natural anhydrite is utilized industrial ball mill grinding, and fineness is controlled at 200 mesh sieve surpluses less than 3%, and specific surface area is at 4500-7000cm
2/ g.2). raw material is prepared: per-cent by weight, anhydrite powder 85, semi-hydrated gypsum 5, water-granulated slag and flyash (the two is any proportioning) 7.3, calcined alunite breeze and transition metal sulfate (the two is any proportioning) 2.5, hydroxyethylmethyl-cellulose (HEMC) and treated starch (the two is any proportioning) 0.2, the said mixture material with less than the weight ratio of the fine sand of 5mm 1: 1.5.3)。Above-mentioned each raw material is measured respectively, thorough mixing in mixer, bottom layer brushing gypsum.
The construction water amount is the standard water consumption calculating of 165 ± 5mm by the slip diffusion diameter, constructs after 24 hours, and suitable wet curing at interval makes the abundant aquation of anhydrite, thereby produces higher intensity and better water tolerance.
Claims (6)
1. brushing gypsum, it comprises semi-hydrated gypsum and water-holding agent, it is characterized in that: also add anhydrite powder and exciting agent, the per-cent of the shared gross weight of each component is:
Anhydrite powder 80-90, semi-hydrated gypsum 3-13, exciting agent 1-7, water-holding agent 0.1-0.3, exciting agent comprises sylvite series exciting agent, calcined alunite breeze, calcine in industrial alunite, the transition metal sulfate any one or the mixing more than two kinds, is any proportioning during mixing more than two kinds.
2. a kind of brushing gypsum according to claim 1, it is characterized in that: also add hydraulicity cement in the described component, the per-cent that hydraulicity cement accounts for gross weight is 0-15, hydraulicity cement comprises: when any one or the mixing more than two kinds in cement, water-granulated slag, the flyash, mixing more than two kinds is any proportioning.
3. a kind of brushing gypsum according to claim 1, it is characterized in that: water-holding agent adopts in methylcellulose gum, Vltra tears, hydroxyethylmethyl-cellulose, the treated starch any one or the mixing more than two kinds, is any proportioning during mixing more than two kinds.
4. a kind of brushing gypsum according to claim 1 is characterized in that: anhydrite powder is for to utilize industrial ball mill grinding with natural anhydrite, and fineness is controlled at 200 mesh sieve surpluses less than 3%, and specific surface area is at 4500-7000cm
2/ g.
5. the preparation method of a brushing gypsum is characterized in that: realized by following steps: 1). natural anhydrite is utilized industrial ball mill grinding, and fineness is controlled at 200 mesh sieve surpluses less than 3%, and specific surface area is at 4500-7000cm
2/ g; 2). raw material is prepared: per-cent by weight, anhydrite powder 80-90, semi-hydrated gypsum 3-13, exciting agent 1-7, water-holding agent 0.1-0.3; Also add hydraulicity agglutination material, the per-cent that hydraulicity agglutination material accounts for gross weight is 0-15; 3). above-mentioned each raw material is measured respectively, thorough mixing in mixer, the surface layer brushing gypsum.
6. the preparation method of a kind of brushing gypsum according to claim 5 is characterized in that: add in the described mixture and make bottom layer brushing gypsum less than the fine sand of 5mm, the 1-2 that is added to the said mixture material of fine sand times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03125477 CN1218900C (en) | 2003-09-30 | 2003-09-30 | Whitewashing gypsum and preparing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03125477 CN1218900C (en) | 2003-09-30 | 2003-09-30 | Whitewashing gypsum and preparing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1528702A CN1528702A (en) | 2004-09-15 |
| CN1218900C true CN1218900C (en) | 2005-09-14 |
Family
ID=34285938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03125477 Expired - Fee Related CN1218900C (en) | 2003-09-30 | 2003-09-30 | Whitewashing gypsum and preparing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1218900C (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1309672C (en) * | 2005-03-31 | 2007-04-11 | 詹木旺 | Gypsum inner wall powder and its preparation method |
| CN100400459C (en) * | 2005-08-26 | 2008-07-09 | 武汉冶金建筑研究院 | Gypsum building block manufactured by chemical gypsum and industrial waste and manufacture method thereof |
| CN102701618B (en) * | 2012-06-25 | 2014-04-02 | 甘肃省建材科研设计院 | Method for using calcium sulfite type desulfurization gypsum to produce high-strength environmental-friendly type plastering gypsum |
| CN104072076A (en) * | 2014-06-30 | 2014-10-01 | 孙红芳 | Surface layer grinding gypsum powder |
| CN104086148B (en) * | 2014-06-30 | 2016-05-18 | 孙红芳 | Bottom layer brushing gypsum powder |
| CN104891923A (en) * | 2015-05-04 | 2015-09-09 | 王蕊 | One-step formed light gypsum plaster |
| CN105130359A (en) * | 2015-09-15 | 2015-12-09 | 安庆越球建筑防水材料有限公司 | Waterproof painting gypsum and preparation method of waterproof painting gypsum |
| CN105777032A (en) * | 2016-01-29 | 2016-07-20 | 安徽省皖北煤电集团有限责任公司含山恒泰非金属材料分公司 | Natural-anhydrite-based inner wall plastering gypsum material for mechanical spraying and preparation method thereof |
| CN106116420A (en) * | 2016-06-26 | 2016-11-16 | 董晓 | A kind of preparation method of brushing gypsum |
| CN106927775A (en) * | 2017-04-06 | 2017-07-07 | 合肥欧克斯新型建材有限公司 | A kind of anhydrous type bottom layer brushing gypsum and preparation method thereof |
| CN107915461A (en) * | 2017-12-19 | 2018-04-17 | 安徽省皖北煤电集团有限责任公司含山恒泰非金属材料分公司 | A kind of natural anhydrite base light internal wall plastering gupsum material and preparation method thereof |
| CN114079534B (en) | 2020-08-20 | 2023-03-28 | 腾讯科技（深圳）有限公司 | Encoding method, decoding method, apparatus, medium, and electronic device |
| CN112299803B (en) * | 2020-10-22 | 2022-07-05 | 四川蓝鼎新材料有限公司 | Durable gypsum powder |
| CN115340351A (en) * | 2022-07-11 | 2022-11-15 | 浙江华德新材料有限公司 | High-strength antibacterial formaldehyde-removing light plastering anhydrite material and preparation and use method thereof |
-
2003
- 2003-09-30 CN CN 03125477 patent/CN1218900C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1528702A (en) | 2004-09-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106007587B (en) | A kind of 3D printing mortar and preparation method thereof | |
| CN1218900C (en) | Whitewashing gypsum and preparing method thereof | |
| CN101555106B (en) | Composite cementitious material and ground self-leveling mortar using same | |
| CN105753421A (en) | Natural anhydrite based lightweight interior wall plastering gypsum material and preparation method thereof | |
| CN109020456A (en) | A kind of Machine-made Sand dry-mixed mortar and preparation method thereof | |
| CN101265069A (en) | High-strength water-resistant plastering gypsum and producing method thereof | |
| CN102173707A (en) | Desulfurization alpha semi-hydrated gypsum self-leveling mortar | |
| CN104671726A (en) | High-strength cement-based self-leveling mortar | |
| CN103864357B (en) | A kind of premixing regeneration concrete and preparation method thereof | |
| CN110117173A (en) | A kind of mixed sand wet mixing mortar and preparation method thereof | |
| CN101386511A (en) | Gypsum base hydraulicity building mortar and preparation method thereof | |
| CN101337784A (en) | Building mortar and method for preparing same | |
| CN105777032A (en) | Natural-anhydrite-based inner wall plastering gypsum material for mechanical spraying and preparation method thereof | |
| CN105294013A (en) | Dry mixing building mortar | |
| CN1693269A (en) | Gypsum-base self-flatting ground making level material and preparation process thereof | |
| CN105294012A (en) | Anti-cracking-shedding and strong-adhesion dry mixing plastering mortar | |
| CN1931772A (en) | No-baking and no-steaming environment protection solid fly ash-cinder brick | |
| WO2020206650A1 (en) | Cementitious composition with fast development of tensile adhesion strength | |
| CN110510946A (en) | A kind of β ardealite based self-leveling mortar and preparation method thereof | |
| CN115010452A (en) | Gypsum-based ground ceramic tile bonding mortar and preparation method thereof | |
| CN103553450A (en) | Lightweight self-compacting concrete and preparation method thereof | |
| CN101492274B (en) | Titanium gypsum dry mixed mortar | |
| CN100569694C (en) | Brushing gypsum | |
| CN104478385A (en) | Water-retaining plastering anhydrite and preparation method thereof | |
| WO2021191839A1 (en) | Dry cementitious material mixture for 3d-printing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050914 Termination date: 20160930 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |