CN108675739B - Special binder for aerated concrete blocks - Google Patents
Special binder for aerated concrete blocks Download PDFInfo
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- CN108675739B CN108675739B CN201810414284.7A CN201810414284A CN108675739B CN 108675739 B CN108675739 B CN 108675739B CN 201810414284 A CN201810414284 A CN 201810414284A CN 108675739 B CN108675739 B CN 108675739B
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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
- C04B28/142—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
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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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/08—Flue dust, i.e. fly ash
-
- 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
- C04B2201/10—Mortars, concrete or artificial stone characterised by specific physical values for the viscosity
-
- 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
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Civil Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to the field of building materials, in particular to a special binding material for aerated concrete blocks. The special binding material comprises the following raw materials in parts by weight: 700-800 parts of desulfurized gypsum powder, 50-200 parts of fly ash, 50-100 parts of sand, 0.1-0.5 part of short fiber, 1-3 parts of hydroxypropyl methyl cellulose, 2-5 parts of protein composite retarder, 1-3 parts of polyurethane resin, 0.8-1.3 parts of antifreezing agent and 1.5-3.5 parts of epoxy resin. The invention selects coal-electricity solid waste desulfurized gypsum and fly ash as main materials through modification excitation, develops a special binding material for aerated concrete blocks with high water retention rate and high binding performance, has thermal conductivity similar to or the same as that of the aerated concrete blocks, is beneficial to avoiding hollowing and cracking of walls caused by overlarge thermal conductivity difference, and simultaneously has good heat preservation effect, sound insulation performance, anti-freezing effect and static electricity discharge transmission performance.
Description
Technical Field
The invention relates to the field of building materials, in particular to a special binding material for aerated concrete blocks.
Background
The aerated concrete block is a novel building material which is light, porous, heat-insulating, good in fireproof performance, nailable, sawable, planeable and has certain shock resistance. As early as thirty years, China begins to produce the product and is widely used in high-low-rise buildings such as Shanghai international restaurants, Shanghai mansions, Fuzhou buildings and Chinese people bank buildings. Is an excellent novel building material. Aerated concrete block masonry is generally used in infilled walls, and the strength grades of the blocks used are generally partition wall A3.5 and outer wall A5. The mortar strength is not lower than M5.
With the increasing of the working importance of the country to green buildings and green building materials, the requirements of buildings in various regions on energy conservation are increased day by day. The autoclaved aerated concrete block is used as the only wall material which can simultaneously meet the requirements of wall material innovation and single material realization of 50 percent of building energy saving so far, and has wide application in engineering. However, the use of autoclaved aerated concrete is accompanied with huge disputes for a long time, and the phenomena of hollowing, cracking, water seepage and the like occur in the use process of a plurality of autoclaved aerated concrete block walls, and even the phenomena of no sound insulation, no heat preservation, electrostatic transmission and the like of the walls occur, thereby bringing huge negative effects to human life.
The problem of the engineering quality is that the binding material adopted during the construction of the autoclaved aerated concrete block is not matched with the water absorption characteristics of the block which are fast before slow, large in capacity and long in duration; after the steam-pressurized concrete block is only cut by steel wires, the surface of the steam-pressurized concrete block is fish-scale-shaped, more scum left after cutting exists, the scum can play a role in isolating the plastering of the block, if common mortar is selected between the block and the block for adhesion, water in the common mortar is easily absorbed by the scum, the hydration reaction of the mortar is insufficient, the mortar is seriously influenced to be coagulated and hardened, the defects of low bonding strength of mortar joints of the block, hollowing cracking, insufficient shear strength along the joint and the like are caused, and the earthquake resistance is unfavorable.
Disclosure of Invention
In order to overcome the problems, the invention provides the aerated concrete block bonding material, which solves the problems of hollowing and cracking of a wall body caused by too large difference of heat conductivity between the existing concrete block bonding material and the autoclaved aerated concrete block, increases the sound insulation and heat preservation effects of the aerated concrete block and reduces the electrostatic transmission of the wall body.
The invention is realized by the following technical scheme:
the special binding material for the aerated concrete block comprises the following raw materials in parts by weight:
700-800 parts of desulfurized gypsum powder, 50-200 parts of fly ash, 50-100 parts of sand, 0.1-0.5 part of short fiber, 1-3 parts of hydroxypropyl methyl cellulose, 2-5 parts of protein composite retarder, 1-3 parts of polyurethane resin, 0.8-1.3 parts of antifreezing agent and 1.5-3.5 parts of epoxy resin.
Preferably, the special binder for the aerated concrete block comprises the following raw materials in parts by weight:
725-755 parts of desulfurized gypsum powder, 50-100 parts of fly ash, 50-80 parts of sand, 0.1-0.5 part of short fiber, 1-3 parts of hydroxypropyl methyl cellulose, 2-5 parts of protein composite retarder, 1-3 parts of polyurethane resin, 0.8-1.3 parts of antifreezing agent and 1.5-3.5 parts of epoxy resin.
The special binding material for the aerated concrete block comprises the following raw materials in parts by weight:
725 parts of desulfurized gypsum powder, 85 parts of fly ash, 50 parts of sand, 0.3 part of short fiber, 3 parts of hydroxypropyl methyl cellulose, 2 parts of protein composite retarder, 1 part of polyurethane resin, 1 part of antifreezing agent and 1.5 parts of epoxy resin.
Preferably, the fly ash comprises the following specification amounts:
coarse powder: the particle size is 0.8-1.0 mm and accounts for 5-8% of the total weight of the fly ash;
first-stage fine powder: the particle size is 0.5-0.7 mm, and accounts for 15-25% of the total weight of the fly ash;
secondary fine powder: the particle size is 0.35-0.45 mm and accounts for 50-55% of the total weight of the fly ash;
third-grade fine powder: the particle size is 0.2-0.3 mm and accounts for 13-19% of the total weight of the fly ash;
floating beads: the particle size is 0.09-0.12 mm, and accounts for 3-5% of the total weight of the fly ash;
micro-powder: the particle size is less than or equal to 0.08mm and accounts for 3-8% of the total weight of the fly ash.
Preferably, the content of soil in the sand is less than or equal to 1.5 percent, and the sand comprises the following specification dosage:
coarse sand: the particle size is 1.0-2.0 mm, and accounts for 10-30% of the total weight of the sand;
fine sand: the particle size is 0.2-0.9 mm, and accounts for 45-60% of the total weight of the sand;
micro-sand: the particle size is less than or equal to 0.1mm and accounts for 30-50% of the total weight of the sand.
Preferably, the antifreeze comprises any one of acid phosphate amine salt, alkylamine, fatty acid amide, organic acid ester and alkyl succinimide.
Preferably, the epoxy resin includes any one of an aliphatic epoxy resin, a glycidyl ester type epoxy resin, and a glycidyl amine type epoxy resin.
Preferably, the maximum particle size of the raw material is 1.35mm, and the minimum particle size is 0.01 mm.
In the present invention:
the antifreezing agent is a substance capable of preventing moisture in materials from freezing at a low temperature, has the effect of enabling concrete to be slowly hardened at a negative temperature but not to ice, is mixed into the special binding material for the concrete blocks, effectively prevents the binding material between the gaps of the adjacent aerated concrete blocks from freezing due to the fact that the external temperature is too low, enables the volume of the binding material to be increased, forces the gaps between the adjacent aerated concrete blocks to be widened, and enables the binding material to recover the original volume after ice blocks are melted when the temperature rises again, and simultaneously causes cracking and hollowing between the adjacent aerated concrete blocks.
The polyurethane resin elastomer is used as a roller, a conveyor belt, a hose, an automobile part, a sole, synthetic leather, a wire cable, a medical artificial organ and the like; the flexible foam is used for the liner of vehicles, living rooms and clothes, the hard foam is used for the heat insulation, sound absorption, packaging, insulation and low-foaming synthetic wood, the coating is used for high-grade vehicles, furniture, wood and metal protection, pool dams and building anti-leakage materials, fabric coating and the like. The adhesive has good adhesive force to metal, glass, ceramic, leather, fiber and the like. The air-entraining and sound-insulating material is mixed into the special binding material for the concrete blocks, so that the binding effect between the gaps of the adjacent air-entraining concrete blocks is effectively increased, and the sound-insulating effect is enhanced.
The desulfurized gypsum powder consists of disulfide trioxide, aluminum oxide, ferric oxide, calcium oxide, magnesium oxide, potassium oxide and the like, and also contains silicon dioxide, sodium oxide, calcium carbonate, calcium sulfite, limestone, calcium chloride, magnesium chloride and the like. Compared with other gypsum powder, the desulfurized gypsum powder has the characteristics of reproducibility, small granularity, stable components, low content of harmful impurities, high purity and the like.
The aliphatic epoxy resin has a strong insulating effect, and is mixed into the special bonding material for the aerated concrete block, so that the electrostatic transmission of the aerated concrete block is effectively reduced and even hindered.
The floating beads account for 3-5% of the total weight of the fly ash, are grey white, thin and hollow in wall, light in weight, 720kg/m3 (heavy) in volume weight, 418.8kg/m3 (light) in weight, about 0.1mm in particle size, closed and smooth in surface, small in heat conductivity, and more than or equal to 1610 ℃ in refractoriness, and are excellent heat-insulating refractory materials. The floating beads mainly comprise silicon dioxide and aluminum oxide as chemical components, have multiple functions of fine particles, hollowness, light weight, high strength, wear resistance, high temperature resistance, heat insulation, flame retardance and the like, are mixed into the special bonding material for the concrete blocks, effectively increase the high temperature resistance and wear resistance of the special bonding material for the aerated concrete blocks, and increase the strength property of the special bonding material.
According to the invention, through heat conductivity detection, the heat conductivity of the special binder for the aerated concrete block is 0.2-0.35 w/cm.k, and is basically the same as that of the aerated concrete block (0.081-0.29 w/cm.k).
The invention has the beneficial effects that:
1. compared with the prior art: according to the invention, the special binding material for the aerated concrete block with high water retention rate and high binding performance is developed by selecting desulfurized gypsum and fly ash which rely on coal electricity to solidify waste through modification excitation as main materials, and the material has thermal conductivity similar to or the same as that of the aerated concrete block, so that hollowing and cracking of the wall body caused by overlarge thermal conductivity difference can be avoided, and meanwhile, the special binding material has good heat preservation effect, sound insulation performance, anti-freezing effect and static electricity discharge transmission performance;
2. the special bonding material for the aerated concrete block has good water retention and workability, ensures complete hydration reaction after masonry, prevents bonding strength from being reduced due to dehydration, and increases strength along with the reduction of water content after bonding hardening;
3. the special bonding material for the aerated concrete block provided by the invention has wide applicability, can be normally used in a low-temperature environment of-20 ℃ or a high-temperature environment of 50 ℃, and meets the policy requirements of national environmental protection and green buildings.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments. However, the technical solution provided by the present invention includes not only the contents shown in the examples:
example 1
The embodiment provides a special binder for aerated concrete, which comprises the following raw materials in parts by weight:
725 parts of desulfurized gypsum powder, 85 parts of fly ash, 50 parts of sand, 0.3 part of short fiber, 3 parts of hydroxypropyl methyl cellulose, 2 parts of protein composite retarder, 1 part of polyurethane resin, 1 part of antifreezing agent and 1.5 parts of epoxy resin.
In this example, the fly ash included the following specification amounts:
coarse powder: the particle size is 1.0mm, and accounts for 5 percent of the total weight of the fly ash;
first-stage fine powder: the particle size is 0.7mm and accounts for 20 percent of the total weight of the fly ash;
secondary fine powder: the particle size is 0.45mm, and accounts for 53 percent of the total weight of the fly ash;
third-grade fine powder: the particle size is 0.3mm, and accounts for 15 percent of the total weight of the fly ash;
floating beads: the particle size is 0.09mm and accounts for 3 percent of the total weight of the fly ash;
micro-powder: the particle size is 0.05mm and accounts for 4 percent of the total weight of the fly ash.
In this example, the sand has a clay content of 1.5%, including the following specification amounts:
coarse sand: the particle size is 1.35mm, and accounts for 10 percent of the total weight of the sand;
fine sand: the particle size is 0.5mm and accounts for 55 percent of the total weight of the sand;
micro-sand: the particle size is 0.1mm and accounts for 35 percent of the total weight of the sand.
In this embodiment, the antifreeze agent is a fatty acid amide.
In this embodiment, the epoxy resin is an aliphatic epoxy resin.
In this example, the maximum particle size of the feedstock was 1.35mm and the minimum particle size was 0.01 mm.
Example 2
The embodiment provides a special binder for aerated concrete, which comprises the following raw materials in parts by weight:
755 parts of desulfurized gypsum powder, 100 parts of fly ash, 80 parts of sand, 0.5 part of short fiber, 3 parts of hydroxypropyl methyl cellulose, 5 parts of protein composite retarder, 3 parts of polyurethane resin, 1.3 parts of acidic amine phosphate and 3.5 parts of glycidyl amine type epoxy resin.
In this example, the fly ash included the following specification amounts:
coarse powder: the particle size is 0.8mm and accounts for 8 percent of the total weight of the fly ash;
first-stage fine powder: the particle size is 0.5mm, and accounts for 15 percent of the total weight of the fly ash;
secondary fine powder: the particle size is 0.35mm and accounts for 50 percent of the total weight of the fly ash;
third-grade fine powder: the particle size is 0.2mm, and accounts for 15 percent of the total weight of the fly ash;
floating beads: the particle size is 0.1mm and accounts for 5 percent of the total weight of the fly ash;
micro-powder: the particle size is 0.05mm, and accounts for 7 percent of the total weight of the fly ash.
Preferably, the content of soil in the sand is 1.0%, and the following specification dosage is included:
coarse sand: the particle size is 1.0mm and accounts for 25 percent of the total weight of the sand;
fine sand: the particle size is 0.2mm and accounts for 45 percent of the total weight of the sand;
micro-sand: the particle size is 0.05mm and accounts for 30 percent of the total weight of the sand.
Example 3
The embodiment provides a special binder for aerated concrete, which comprises the following raw materials in parts by weight:
750 parts of desulfurized gypsum powder, 85 parts of fly ash, 50 parts of sand, 0.1 part of short fiber, 2 parts of hydroxypropyl methyl cellulose, 2 parts of protein composite retarder, 2 parts of polyurethane resin, 0.8 part of alkyl succinimide and 1.5 parts of glycidyl ester type epoxy resin.
In this example, the fly ash included the following specification amounts:
coarse powder: the particle size is 0.9mm and accounts for 6 percent of the total weight of the fly ash;
first-stage fine powder: the particle size is 06mm, and accounts for 17 percent of the total weight of the fly ash;
secondary fine powder: the particle size is 0.4mm and accounts for 52 percent of the total weight of the fly ash;
third-grade fine powder: the particle size is 0.2mm, and accounts for 15 percent of the total weight of the fly ash;
floating beads: the particle size is 0.1mm and accounts for 4 percent of the total weight of the fly ash;
micro-powder: the particle size is 0.01mm and accounts for 6 percent of the total weight of the fly ash.
In this example, the sand has a clay content of 1.2%, including the following specification amounts:
coarse sand: the particle size is 1.5mm, and accounts for 20 percent of the total weight of the sand;
fine sand: the particle size is 0.5mm and accounts for 45 percent of the total weight of the sand;
micro-sand: the particle size is 0.05mm and accounts for 35 percent of the total weight of the sand.
In the embodiments provided by the invention, the performance index test of the special binder for aerated concrete blocks processed in each embodiment is shown in table 1.
| Flexural strength | Compressive strength | Tensile bond strength | Water retention rate | Bulk density | |
| Example 1 | 2.80MPA | 6.0MPA | 1.5MPA | 95％ | 1050kg/m3 |
| Example 2 | 3.10MPA | 6.1MPA | 1.53MPA | 95％ | 1038kg/m3 |
| Example 3 | 2.93MPA | 6.0MPA | 1.47MPA | 96％ | 1042kg/m3 |
TABLE 1
In conclusion, the special bonding material for the aerated concrete blocks provided by the invention meets the policy requirements of national environmental protection and green buildings, and meets the performance index standard of the special bonding material for the aerated concrete blocks.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the present invention without departing from the technical spirit of the present invention.
Claims (1)
1. The special binding material for the aerated concrete block is characterized by comprising the following raw materials in parts by weight:
700-800 parts of desulfurized gypsum powder, 50-200 parts of fly ash, 50-100 parts of sand and short
0.1-0.5 part of fiber, 1-3 parts of hydroxypropyl methyl cellulose and 2-5 parts of protein composite retarder
1-3 parts of polyurethane resin, 0.8-1.3 parts of antifreeze and 1.5-3.5 parts of epoxy resin;
wherein the fly ash comprises the following specification and dosage:
coarse powder: the particle size is 0.8-1.0 mm and accounts for 5-8% of the total weight of the fly ash;
first-stage fine powder: the particle size is 0.5-0.7 mm, and accounts for 15-25% of the total weight of the fly ash;
secondary fine powder: the particle size is 0.35-0.45 mm and accounts for 50-55% of the total weight of the fly ash;
third-grade fine powder: the particle size is 0.2-0.3 mm and accounts for 13-19% of the total weight of the fly ash;
floating beads: the particle size is 0.09-0.12 mm, and accounts for 3-5% of the total weight of the fly ash;
micro-powder: the particle size is less than or equal to 0.08mm and accounts for 3-8% of the total weight of the fly ash;
wherein the content of soil in the sand is less than or equal to 1.5 percent, and the sand comprises the following specification dosage:
coarse sand: the particle size is 1.0-2.0 mm, accounting for 10-30% of the total weight of the sand,
fine sand: the particle size is 0.2-0.9 mm, accounting for 45-60% of the total weight of the sand,
micro-sand: the particle size is less than or equal to 0.1mm and accounts for 30-50% of the total weight of the sand,
the percentage content of the coarse sand, the fine sand and the micro sand after combination is 100 percent;
the anti-freezing agent comprises any one of acid phosphate amine salt, alkylamine, fatty acid amide, organic acid ester and alkyl succinimide;
the epoxy resin comprises any one of aliphatic epoxy resin, glycidyl ester type epoxy resin and glycidyl amine type epoxy resin;
the maximum particle size of the raw materials is 1.35mm, and the minimum particle size is 0.01 mm.
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| CN201810414284.7A CN108675739B (en) | 2018-05-03 | 2018-05-03 | Special binder for aerated concrete blocks |
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| CN201810414284.7A CN108675739B (en) | 2018-05-03 | 2018-05-03 | Special binder for aerated concrete blocks |
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| CN111302723A (en) * | 2018-12-11 | 2020-06-19 | 北京海普斯建材有限公司 | Aerated concrete dry-mixed plastering mortar and preparation method thereof |
| CN111039625B (en) * | 2019-12-28 | 2022-04-12 | 陕西凝远新材料科技股份有限公司 | Special bonding mortar for aerated concrete insulation board |
| CN113213861A (en) * | 2021-06-17 | 2021-08-06 | 烟台瑞祥干混砂浆有限公司 | Cement-based self-leveling mortar and preparation process thereof |
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| KR100570470B1 (en) * | 2005-12-19 | 2006-04-12 | (주)유성테크 | Mortar compositons of gypsum materials |
| CN101993232A (en) * | 2009-08-19 | 2011-03-30 | 江苏仁和建材科技有限公司 | Crack-resisting masonry mortar for air-entrapping brick wall body, prepared from desulfurization gypsum powder |
| CN102531512B (en) * | 2011-12-27 | 2013-09-25 | 长安大学 | Plastering material prepared by iron tailings or quartzitic coal gangue and desulfurized gypsum |
| CN104860620A (en) * | 2015-04-28 | 2015-08-26 | 昆明理工大学 | Copolymer enhanced lightweight gypsum decorative materials |
| CN105218011B (en) * | 2015-10-15 | 2017-12-12 | 北京中铁润海科技有限公司 | A kind of anchorage mortar and its application method |
| CN106904922A (en) * | 2017-02-18 | 2017-06-30 | 四川华邦保和涂料有限公司 | A kind of preparation method of ardealite base exterior wall internal insulation anticracking grout |
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