WO2023213065A1 - 一种石膏基地面瓷砖粘结砂浆及其制备方法 - Google Patents
一种石膏基地面瓷砖粘结砂浆及其制备方法 Download PDFInfo
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- WO2023213065A1 WO2023213065A1 PCT/CN2022/129700 CN2022129700W WO2023213065A1 WO 2023213065 A1 WO2023213065 A1 WO 2023213065A1 CN 2022129700 W CN2022129700 W CN 2022129700W WO 2023213065 A1 WO2023213065 A1 WO 2023213065A1
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- WIPO (PCT)
- Prior art keywords
- parts
- gypsum
- powder
- water
- bonding mortar
- Prior art date
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- 239000010440 gypsum Substances 0.000 title claims abstract description 66
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 66
- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 239000000843 powder Substances 0.000 claims abstract description 44
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 24
- 239000004568 cement Substances 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 13
- 239000000945 filler Substances 0.000 claims abstract description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 19
- 239000011398 Portland cement Substances 0.000 claims description 16
- 239000004576 sand Substances 0.000 claims description 12
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 6
- 239000011575 calcium Substances 0.000 claims description 6
- 229910052791 calcium Inorganic materials 0.000 claims description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 6
- 229920005646 polycarboxylate Polymers 0.000 claims description 6
- 229920000877 Melamine resin Polymers 0.000 claims description 5
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 claims description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 5
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 5
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 5
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical group OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims description 5
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 5
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 239000010453 quartz Substances 0.000 claims description 5
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 claims description 4
- 239000004816 latex Substances 0.000 claims description 4
- 229920000126 latex Polymers 0.000 claims description 4
- 102000004169 proteins and genes Human genes 0.000 claims description 4
- 108090000623 proteins and genes Proteins 0.000 claims description 4
- 239000002893 slag Substances 0.000 claims description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 2
- 239000006004 Quartz sand Substances 0.000 claims description 2
- 239000012615 aggregate Substances 0.000 claims description 2
- 150000001413 amino acids Chemical class 0.000 claims description 2
- 239000010881 fly ash Substances 0.000 claims description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 3
- -1 tackifier Substances 0.000 claims 2
- 239000004698 Polyethylene Substances 0.000 claims 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims 1
- 229920000573 polyethylene Polymers 0.000 claims 1
- 150000003839 salts Chemical class 0.000 claims 1
- 229910052710 silicon Inorganic materials 0.000 claims 1
- 239000010703 silicon Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 32
- 238000010276 construction Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000005336 cracking Methods 0.000 description 5
- 206010040844 Skin exfoliation Diseases 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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
-
- 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
- C04B28/142—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 synthetic or waste calcium sulfate cements
- C04B28/143—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 synthetic or waste calcium sulfate cements the synthetic calcium sulfate being phosphogypsum
-
- 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
- C04B28/142—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 synthetic or waste calcium sulfate cements
- C04B28/144—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 synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
-
- 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
- C04B2111/00637—Uses not provided for elsewhere in C04B2111/00 as glue or binder for uniting building or structural materials
- C04B2111/00646—Masonry mortars
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Definitions
- the invention relates to a gypsum-based floor tile bonding mortar and a preparation method thereof.
- gypsum As one of the main building cementitious materials, gypsum has an irreplaceable role. It has many excellent properties.
- the hardened body has good thermal insulation and sound absorption properties. The volume expands slightly when hardened. It can make the surface of the hardened body smooth and non-cracking, making it decorative. Good stability, good processability, low production energy consumption, etc.
- gypsum-based self-leveling mortar has the advantages of convenient construction, high mechanical construction efficiency, fast setting and hardening, and does not require long-term maintenance.
- the hardened gypsum-based self-leveling has micro-expandability and is not easy to crack and hollow.
- the gypsum material itself contains crystal water, which can automatically adjust the humidity in the air and improve the comfort of living.
- due to the poor water resistance of the gypsum material itself, in application it also avoids watery parts in kitchens, bathrooms and balconies, and is widely used for floor leveling in indoor dry parts of residential buildings.
- the main bonding materials for floor tiles are cement gel materials. Since cement gel materials and gypsum gel materials are essentially different, when the ambient temperature and humidity change, the expansion and shrinkage rates of the two materials are different. Similarly, there may be a risk of peeling or cracking of the material layer at the bonding point between the two materials, which poses quality risks to the quality and durability of the project.
- the main technical problem to be solved by the present invention is to provide a gypsum-based floor tile bonding mortar and a preparation method thereof.
- the gypsum-based leveling mortar is used on the ground after leveling, the adaptability of the same gel material is better, and the temperature of the environment can be avoided.
- the humidity changes, the expansion rate and shrinkage rate of the material are different, and the risk of peeling or cracking of the material layer may occur at the bonding point; it has the characteristics of adjustable operating time, rapid strength development, no need for maintenance, and short construction period; for gypsum base
- the leveling mortar can be used on the ground after leveling. Its applicable environment is indoor dry area floors.
- the absolute dry bonding strength of the material can reach 0.7-1.0MPa.
- the dry shrinkage rate is extremely low or even no shrinkage.
- the bonding mortar can be used directly for leveling. And tiling is completed at one time, simplifying the construction process.
- one technical solution adopted by the present invention is to provide a gypsum-based floor tile bonding mortar, including building gypsum powder, cement, aggregate, filler, tackifier, water-reducing agent, water-retaining agent and retardant.
- Agent each component is calculated by weight: 400-700 parts of building gypsum powder, 0-80 parts of cement, 300-580 parts of aggregate, 0-100 parts of filler, 5-20 parts of tackifier, 0.5-0.5 parts of water-reducing agent 3 parts, water retaining agent 0.5-2 parts, retarder 0.5-1.5 parts.
- the building gypsum powder is one or more combinations of natural gypsum powder, desulfurized gypsum powder, alpha-type hemihydrate gypsum powder or beta-type hemihydrate gypsum powder among phosphogypsum powders. .
- the cement is Portland cement, ordinary Portland cement, pozzolan Portland cement, fly ash Portland cement, slag Portland cement or composite Portland cement.
- ordinary Portland cement ordinary Portland cement
- pozzolan Portland cement pozzolan Portland cement
- fly ash Portland cement fly ash Portland cement
- slag Portland cement composite Portland cement.
- One or several combinations of them are preferably PO42.5 ordinary Portland cement.
- the aggregate is river sand, lake sand, quartz sand or manufactured sand
- the mesh number is one or two combinations of 30-50 mesh or 50-100 mesh, or the same Lightweight aggregate of fineness grades alone or in combination with the above sand.
- the filler is heavy calcium powder, quartz powder or slag, with a fineness of one or more composites of 100-400 mesh, preferably heavy calcium powder or quartz powder.
- the tackifier is one or more combinations of redispersible latex powder, polyvinyl alcohol or water-soluble resin, preferably polyvinyl acetate redispersible latex powder.
- the water-reducing agent is one or a combination of two of melamine water-reducing agent, polycarboxylate water-reducing agent or naphthalene-based water-reducing agent, preferably melamine water-reducing agent or polycarboxylate water-reducing agent.
- Acid water reducing agent is one or a combination of two of melamine water-reducing agent, polycarboxylate water-reducing agent or naphthalene-based water-reducing agent, preferably melamine water-reducing agent or polycarboxylate water-reducing agent.
- the water-retaining agent is hydroxypropyl methylcellulose ether, with a viscosity of 40,000-150,000 Pa′′s.
- the retarder is one or more of citric acid, sodium tripolyphosphate, proteins or modified amino acids, preferably proteins.
- a preparation method for bonding mortar for ceramic tiles on gypsum-based floors In parts by weight, weigh 400-700 parts of building gypsum powder, 0-80 parts of cement, 300-580 parts of aggregate, 0-100 parts of filler, Mix 5-20 parts of tackifier, 0.5-3 parts of water-reducing agent, 0.5-2 parts of water-retaining agent and 0.5-1.5 parts of retarder in a mixer.
- the beneficial effects of the present invention are: the gypsum-based floor tile bonding mortar and its preparation method pointed out in the present invention have the following advantages:
- the same gel material When used on the ground after leveling with gypsum-based leveling mortar, the same gel material has better adaptability, which can avoid the different expansion and shrinkage rates of the material when the ambient temperature and humidity change, which may cause bonding problems. Risk of peeling or cracking of material layers;
- the dry shrinkage rate is extremely low or even non-shrinking.
- the bonding mortar can be directly used for leveling and tiling in one go, simplifying the construction process.
- building gypsum is the main cementing material; cement can increase the strength and water resistance of the material; the aggregate is drying-grade sand, which plays a skeleton role in the material; the tackifier can give the material better bonding properties; reduce the
- the water agent can improve the workability and constructability of the material, and more importantly, it is irreplaceable in improving the early strength of the material; the water-retaining agent is mainly used to ensure the moisture retention when the cementitious material is hydrated; the retardant is mainly used to adjust the coagulation of the gypsum cementitious material time, which can shorten the construction period while ensuring the construction operation time.
- the invention points out a gypsum-based floor tile bonding mortar and a preparation method thereof, which have the following advantages:
- the same gel material When used on the ground after leveling with gypsum-based leveling mortar, the same gel material has better adaptability, which can avoid the different expansion and shrinkage rates of the material when the ambient temperature and humidity change, which may cause bonding problems. Risk of peeling or cracking of material layers;
- the dry shrinkage rate is extremely low or even non-shrinking.
- the bonding mortar can be directly used for leveling and tiling in one go, simplifying the construction process.
Abstract
本发明公开了一种石膏基地面瓷砖粘结砂浆及其制备方法，包括建筑石膏粉、水泥、骨料、填料、增粘剂、减水剂、保水剂和缓凝剂，各成分按重量份计为：建筑石膏粉400-700份，水泥0-80份，骨料300-580份，填料0-100份，增粘剂5-20份，减水剂0.5-3份，保水剂0.5-2份，缓凝剂0.5-1.5份。本发明在石膏基找平砂浆找平后的地面使用时，相同凝胶材料的适应性更优；具有操作时间可调整，强度发展快，无需养护，工期短等特点；针对石膏基找平砂浆找平后的地面使用，其适用环境为室内干区地面，材料的绝干粘结强度可达0.7-1.0MPa；干缩率极低、甚至无收缩，可以直接使用该粘结砂浆进行找平及贴砖一次完成，简化施工过程。
Description
本发明涉及一种石膏基地面瓷砖粘结砂浆及其制备方法。
石膏作为主要的建筑胶凝材料之一，具有不可替代的作用,它具有许多优良的特性，硬化体绝热和吸音性能好、硬化时体积略有膨胀，可使硬化体表面光滑,不开裂，装饰性好，可加工性好、生产能耗低等。
随着近两年工业副产石膏的综合利用，火电厂的烟气脱硫石膏和磷化工产业的磷石膏已广泛的应用于建材行业，实现了工业固废的资源化、价值化利用，节约资源，造福环境。
在石膏建材的日益发展当下，石膏基自流平砂浆具有施工方便，机械施工效率高，凝结硬化快，无需长时间养护。硬化后的石膏基自流平具有微膨胀性，不易开裂空鼓，同时石膏材料自身含结晶水的特性，能够自动调节空气中的湿度，提高居住的舒适度，但同时由于石膏材料自身的耐水性差，在应用中也避开厨房、卫生间和阳台有水部位，而被广泛应用于居住建筑的室内干燥部位的地面找平。
目前，地面瓷砖粘结材料还是水泥类凝胶材料为主，由于水泥凝胶材料和石膏凝胶材料在本质上有区别，在环境温度和湿度变化时，两种材料的膨胀率和收缩率不一样，两种材料的粘结处可能会出现剥离或材料层开裂的风险，对工程的质量和耐久性存在着质量隐患。
发明内容
本发明主要解决的技术问题是提供一种石膏基地面瓷砖粘结砂浆及其制备 方法，在石膏基找平砂浆找平后的地面使用时，相同凝胶材料的适应性更优，可避免在环境温度和湿度变化时，材料的膨胀率和收缩率不一样，粘结处可能会出现剥离或材料层开裂的风险；具有操作时间可调整，强度发展快，无需养护，工期短等特点；针对石膏基找平砂浆找平后的地面使用，其适用环境为室内干区地面，材料的绝干粘结强度可达0.7-1.0MPa；干缩率极低、甚至无收缩，可以直接使用该粘结砂浆进行找平及贴砖一次完成，简化施工过程。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种石膏基地面瓷砖粘结砂浆，包括建筑石膏粉、水泥、骨料、填料、增粘剂、减水剂、保水剂和缓凝剂，各成分按重量份计为：建筑石膏粉400-700份，水泥0-80份，骨料300-580份，填料0-100份，增粘剂5-20份，减水剂0.5-3份，保水剂0.5-2份，缓凝剂0.5-1.5份。
在本发明一个较佳实施例中，所述建筑石膏粉为天然石膏粉、脱硫石膏粉、磷石膏粉中的α型半水石膏粉或β型半水石膏粉中的一种或几种复合。
在本发明一个较佳实施例中，所述水泥为硅酸盐水泥、普通硅酸盐水泥、火山灰硅酸盐水泥、粉煤灰硅酸盐水泥、矿渣硅酸盐水泥或复合硅酸盐水泥中的一种或几种复合，优选为po42.5普通硅酸盐水泥。
在本发明一个较佳实施例中，所述骨料为河砂、湖砂、石英砂或机制砂，目数为30-50目或50-100目中的一种或两种复合，或相同细度等级的轻质骨料单独或与上述砂的复合。
在本发明一个较佳实施例中，所述填料为重钙粉、石英粉或矿渣，细度为100-400目的一种或几种复合，优选为重钙粉或石英粉。
在本发明一个较佳实施例中，所述增粘剂为可再分散乳胶粉、聚乙烯醇或 水溶性树脂中的一种或几种复合，优选为聚醋酸乙烯类可再分散乳胶粉。
在本发明一个较佳实施例中，所述减水剂为三聚氰胺减水剂、聚羧酸减水剂或萘系减水剂中一种或两种复合，优选为三聚氰胺减水剂或聚羧酸减水剂。
在本发明一个较佳实施例中，所述保水剂为羟丙基甲基纤维素醚，粘度为40000-150000Pa〃s。
在本发明一个较佳实施例中，所述缓凝剂为柠檬酸、三聚磷酸钠、蛋白类或改性氨基酸类中一种或几种复合，优选为蛋白类。
提供一种应用于石膏基地面瓷砖粘结砂浆的制备方法，按重量份计，称取400-700份建筑石膏粉、0-80份水泥、300-580份骨料、0-100份填料、5-20份增粘剂、0.5-3份减水剂、0.5-2份保水剂和0.5-1.5份缓凝剂，在混合搅拌机中混合均匀即可。
本发明的有益效果是：本发明指出的一种石膏基地面瓷砖粘结砂浆及其制备方法，具备如下优点：
1)在石膏基找平砂浆找平后的地面使用时，相同凝胶材料的适应性更优，可避免在环境温度和湿度变化时，材料的膨胀率和收缩率不一样，粘结处可能会出现剥离或材料层开裂的风险；
2)具有操作时间可调整，强度发展快，无需养护，工期短等特点；
3)针对石膏基找平砂浆找平后的地面使用，其适用环境为室内干区地面，材料的绝干粘结强度可达0.7-1.0MPa；
4)干缩率极低、甚至无收缩，可以直接使用该粘结砂浆进行找平及贴砖一次完成，简化施工过程。
下面将对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
实施例一
称取400份α型建筑石膏粉，5份强度等级为42.5的普通硅酸盐水泥，500份30-50目烘干砂，88.5份325目重钙粉，5份可再分散胶粉，0.5份聚羧酸减水剂，0.5份粘度为150000Pa〃s的羟丙基甲基纤维素醚，0.5份石膏缓凝剂SG-12X，在混合搅拌机中混合均匀即得到本发明的石膏基地面瓷砖粘结砂浆。
实施例二
称取550份β型烟气脱硫石膏建筑石膏粉，20份强度等级为42.5的普通硅酸盐水泥，250份30-50目和116.8份50-100目烘干砂，50份200目石英粉，10份可再分散胶粉，1份聚羧酸减水剂，1.5份粘度为100000Pa〃s的羟丙基甲基纤维素醚，0.7份石膏缓凝剂SG-12X，在混合搅拌机中混合均匀即得到本发明的石膏基地面瓷砖粘结砂浆。
实施例三
称取100份α型磷石膏建筑石膏粉和600份β型磷石膏建筑石膏粉，80份强度等级为42.5的普通硅酸盐水泥，183.5份30-50目烘干砂，10份200目重钙粉，20份可再分散胶粉，3份三聚氰胺减水剂，2份粘度为40000Pa〃s的羟丙基甲基纤维素醚，1.5份石膏缓凝剂SG-12X，在混合搅拌机中混合均匀即得到本发明的石膏基地面瓷砖粘结砂浆。
其中，建筑石膏作为主要胶凝材料；水泥具有增加材料的强度和耐水性；骨料为烘干级的配砂，材料中起骨架作用；增粘剂能赋予材料更优异的粘结性 能；减水剂能改善材料和易性、施工性，更为重要的对材料早期强度提升不可替代；保水剂主要为保证胶凝材料水化时水分保持；缓凝剂主要作为调整石膏胶凝材料的凝结时间，可在保证施工操作时间同时缩短工期。
上述实施例具体性能指标如下表所示，参考JC/T 1025-2007《粘结石膏》标准。
综上所述，本发明指出的一种石膏基地面瓷砖粘结砂浆及其制备方法，具备如下优点：
1)在石膏基找平砂浆找平后的地面使用时，相同凝胶材料的适应性更优，可避免在环境温度和湿度变化时，材料的膨胀率和收缩率不一样，粘结处可能会出现剥离或材料层开裂的风险；
2)具有操作时间可调整，强度发展快，无需养护，工期短等特点；
3)针对石膏基找平砂浆找平后的地面使用，其适用环境为室内干区地面，材料的绝干粘结强度可达0.7-1.0MPa；
4)干缩率极低、甚至无收缩，可以直接使用该粘结砂浆进行找平及贴砖一次完成，简化施工过程。
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书内容所作的等效结构或等效流程变换，或直接或间接运用在其它相关的技术领域，均同理包括在本发明的专利保护范围内。
Claims (10)
- 一种石膏基地面瓷砖粘结砂浆，其特征在于，包括建筑石膏粉、水泥、骨料、填料、增粘剂、减水剂、保水剂和缓凝剂，各成分按重量份计为：建筑石膏粉400-700份，水泥0-80份，骨料300-580份，填料0-100份，增粘剂5-20份，减水剂0.5-3份，保水剂0.5-2份，缓凝剂0.5-1.5份。
- 根据权利要求1所述的石膏基地面瓷砖粘结砂浆，其特征在于，所述建筑石膏粉为天然石膏粉、脱硫石膏粉、磷石膏粉中的α型半水石膏粉或β型半水石膏粉中的一种或几种复合。
- 根据权利要求1所述的石膏基地面瓷砖粘结砂浆，其特征在于，所述水泥为硅酸盐水泥、普通硅酸盐水泥、火山灰硅酸盐水泥、粉煤灰硅酸盐水泥、矿渣硅酸盐水泥或复合硅酸盐水泥中的一种或几种复合，优选为po42.5普通硅酸盐水泥。
- 根据权利要求1所述的石膏基地面瓷砖粘结砂浆，其特征在于，所述骨料为河砂、湖砂、石英砂或机制砂，目数为30-50目或50-100目中的一种或两种复合，或相同细度等级的轻质骨料单独或与上述砂的复合。
- 根据权利要求1所述的石膏基地面瓷砖粘结砂浆，其特征在于，所述填料为重钙粉、石英粉或矿渣，细度为100-400目的一种或几种复合，优选为重钙粉或石英粉。
- 根据权利要求1所述的石膏基地面瓷砖粘结砂浆，其特征在于，所述增粘剂为可再分散乳胶粉、聚乙烯醇或水溶性树脂中的一种或几种复合，优选为聚醋酸乙烯类可再分散乳胶粉。
- 根据权利要求1所述的石膏基地面瓷砖粘结砂浆，其特征在于，所述减水剂为三聚氰胺减水剂、聚羧酸减水剂或萘系减水剂中一种或两种复合，优选为 三聚氰胺减水剂或聚羧酸减水剂。
- 根据权利要求1所述的石膏基地面瓷砖粘结砂浆，其特征在于，所述保水剂为羟丙基甲基纤维素醚，粘度为40000-150000Pa〃s。
- 根据权利要求1所述的石膏基地面瓷砖粘结砂浆，其特征在于，所述缓凝剂为柠檬酸、三聚磷酸钠、蛋白类或改性氨基酸类中一种或几种复合，优选为蛋白类。
- 一种应用权利要求1-9所述的石膏基地面瓷砖粘结砂浆的制备方法，其特征在于，按重量份计，称取400-700份建筑石膏粉、0-80份水泥、300-580份骨料、0-100份填料、5-20份增粘剂、0.5-3份减水剂、0.5-2份保水剂和0.5-1.5份缓凝剂，在混合搅拌机中混合均匀即可。
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