CN111039625B - Special bonding mortar for aerated concrete insulation board - Google Patents
Special bonding mortar for aerated concrete insulation board Download PDFInfo
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- CN111039625B CN111039625B CN201911382053.3A CN201911382053A CN111039625B CN 111039625 B CN111039625 B CN 111039625B CN 201911382053 A CN201911382053 A CN 201911382053A CN 111039625 B CN111039625 B CN 111039625B
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- aerated concrete
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- bonding mortar
- insulation board
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/04—Portland 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
- 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
- C04B2201/10—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
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a special bonding mortar for an aerated concrete insulation board, which is prepared from the following raw materials in parts by weight: 340 parts of 300-grade cement, 150 parts of 100-grade gypsum, 650 parts of 550-grade quartz sand, 10-20 parts of redispersible latex powder, 0.5-1 part of cellulose ether, 0.8-1.2 parts of polycarboxylic acid water reducing agent, 1-3 parts of silane-based powder, 1-3 parts of bentonite and 1-2 parts of polypropylene fiber, wherein the cement is early-strength ordinary portland cement with the strength of 42.5; the particle size of the quartz sand is less than 1 mm; the polycarboxylate superplasticizer is powdery, and the preparation method of the special bonding mortar for the aerated concrete insulation board comprises the following steps: raw material metering; feeding 1; and (3) feeding 2. The special mortar has good water retention property and high tensile bonding strength, the 14d tensile bonding strength is up to 1.7MPa, and the bonding requirement of the aerated concrete heat-insulating plate can be met.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a special bonding mortar for an aerated concrete insulation board.
Background
With the continuous promotion and development of building energy-saving external wall external thermal insulation engineering in China, various wall self-insulation materials appear in the market, wherein the aerated concrete can be used as an external wall for realizing thermal insulation integration, but cold and hot bridges exist at external wall beam columns and other parts.
In the prior art, the bonding mortar prepared by adopting raw materials such as cement, sand, an additive and the like meets the requirement on the tensile bonding strength in general engineering positions, the 14d tensile bonding strength is generally 0.5-0.8 MPa, and the bonding requirement of special positions cannot be met. GB/T25181-2010 ready-mixed mortar requires that the dry-mixed plastering mortar 14d has the tensile bonding strength of not less than 0.3MPa and the dry-mixed ceramic tile bonding mortar 14d has the tensile bonding strength of not less than 0.5 MPa. The existing bonding mortar used in engineering construction has the problems of low bonding force and the like, and is easy to crack, fall off and the like.
A chinese patent with application No. CN201010167795.7 discloses a thermal insulation system with polycrystalline anti-cracking waterproof mortar, which comprises interface mortar, thermal insulation mortar and waterproof mortar, wherein the waterproof mortar comprises cement, sand, redispersible latex powder, hydroxypropyl methyl cellulose ether, inorganic water reducing agent, organosilicon waterproofing agent, water glass, inorganic retarder, slag powder, heavy calcium, light calcium, fly ash and polypropylene fiber; the waterproof mortar comprises the following components in percentage by weight: 25-36% of cement, 55-65% of sand, 0.5-2% of redispersible latex powder, 0.1-0.2% of hydroxypropyl methyl cellulose ether, 0.1-0.3% of inorganic water reducing agent, 0.15-0.4% of organosilicon waterproofing agent, 0.3-0.7% of water glass, 0.01-0.04% of inorganic retarder, 2-5% of slag powder, 3-5% of heavy calcium carbonate, 0.5-2.0% of light calcium carbonate, 2-3% of fly ash and 0.04-0.06% of polypropylene fiber.
A Chinese patent with the application number of CN201410470044.0 discloses a bonding mortar powder for STP heat insulation boards, which comprises the following components in parts by weight: 30-40 parts of low-alkalinity sulphoaluminate cement, 50-60 parts of quartz sand, 10 parts of heavy calcium carbonate, 0.15 part of methyl cellulose ether, 3-3.5 parts of redispersible latex powder, 0.1-0.2 part of naphthalene water reducing agent and 0.1-0.2 part of retarder. The invention has the beneficial effects that: the technical scheme of the invention adopts the low-alkalinity sulphoaluminate cement, the hydration liquid of the cement has lower alkalinity, the corrosion to the heat-insulating plate can be effectively reduced, and the heat-insulating performance is ensured. The two kinds of quartz sand with different meshes are mixed for use, thereby improving the gradation of the quartz sand and reducing the thickness and the porosity of the bonding mortar. The bonding mortar powder for external wall external insulation is bonding mortar for external wall external insulation, wherein rubber particles are added on the basis of the bonding mortar powder for external wall external insulation, and the bonding mortar slurry for external wall external insulation is obtained by adding 20-45 parts of water on the basis of the bonding mortar powder for external wall external insulation. Experiments prove that the rubber particles such as waste tires added in the material can improve the water-resistant bonding performance of the bonding mortar, can consume a large amount of waste tires, utilizes wastes, saves resources and protects the environment.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides the special bonding mortar for the aerated concrete insulation board, the 14d tensile bonding strength of the special bonding mortar is more than 1.2MPa, and the problem of low bonding force of the existing bonding mortar can be solved.
The invention provides bonding mortar special for an aerated concrete insulation board, which is prepared from the following raw materials in parts by weight:
cement 300-
100 portions of gypsum
550 portions of quartz sand and 650 portions of quartz sand
10-20 parts of redispersible latex powder
0.5-1 part of cellulose ether
0.8-1.2 parts of polycarboxylic acid water reducing agent
1-3 parts of silane-based powder
1-3 parts of bentonite
1-2 parts of polypropylene fiber.
Further, the cement is early strength type ordinary portland cement with the strength of 42.5.
Further, the particle size of the quartz sand is 1mm or less.
Further, the polycarboxylate superplasticizer is in a powder shape. The powdery polycarboxylate superplasticizer is easier to mix raw materials of other components.
The preparation method of the special bonding mortar for the aerated concrete insulation board comprises the following steps:
(1) raw material metering: weighing cement, gypsum, quartz sand, redispersible latex powder, cellulose ether, a polycarboxylic acid water reducing agent, silane-based powder, bentonite and polypropylene fiber according to a proportion;
(2) feeding 1: sequentially putting quartz sand, cement and gypsum into a stirrer, and stirring for 20-30 s to form a mixture 1;
(3) feeding 2: and sequentially adding the redispersible latex powder, the cellulose ether, the polycarboxylic acid water reducing agent, the silane-based powder, the bentonite and the polypropylene fiber into the mixture 1, and continuously stirring for 180-200 s to form the special bonding mortar for the aerated concrete insulation board.
The bonding mortar special for the aerated concrete insulation board provided by the invention has the advantages that: the bonding mortar special for the aerated concrete insulation board provided by the invention has high tensile bonding strength, and the 14d tensile bonding strength can reach 1.2-1.8 MPa.
Detailed Description
The invention discloses a special bonding mortar for an aerated concrete insulation board, which has 14d tensile bonding strength of more than 1.2MPa and can solve the problem of low bonding force of the existing bonding mortar.
Example 1
The preparation method of the special bonding mortar for the aerated concrete insulation board comprises the following steps:
(1) raw material metering: weighing 300kg of cement, 100kg of gypsum, 550kg of quartz sand, 10kg of redispersible latex powder, 0.5kg of cellulose ether, 0.8kg of polycarboxylic acid water reducing agent, 1kg of silane-based powder, 1kg of bentonite and 1kg of polypropylene fiber according to the proportion;
(2) feeding 1: sequentially putting quartz sand, cement and gypsum into a stirrer, and stirring for 20-30 s to form a mixture 1;
(3) feeding 2: and sequentially adding the redispersible latex powder, the cellulose ether, the polycarboxylic acid water reducing agent, the silane-based powder, the bentonite and the polypropylene fiber into the mixture 1, and continuously stirring for 180-200 s to form the special bonding mortar for the aerated concrete insulation board.
Example 2
The preparation method of the special bonding mortar for the aerated concrete insulation board comprises the following steps:
(1) raw material metering: weighing 320kg of cement, 125kg of gypsum, 600kg of quartz sand, 15kg of redispersible latex powder, 0.75kg of cellulose ether, 1kg of polycarboxylic acid water reducing agent, 2kg of silane-based powder, 2kg of bentonite and 1.5kg of polypropylene fiber according to the proportion;
(2) feeding 1: sequentially putting quartz sand, cement and gypsum into a stirrer, and stirring for 20-30 s to form a mixture 1;
(3) feeding 2: and sequentially adding the redispersible latex powder, the cellulose ether, the polycarboxylic acid water reducing agent, the silane-based powder, the bentonite and the polypropylene fiber into the mixture 1, and continuously stirring for 180-200 s to form the special bonding mortar for the aerated concrete insulation board.
Example 3
The preparation method of the special bonding mortar for the aerated concrete insulation board comprises the following steps:
(1) raw material metering: weighing 340kg of cement, 150kg of gypsum, 650kg of quartz sand, 20kg of redispersible latex powder, 1kg of cellulose ether, 1.2kg of polycarboxylic acid water reducing agent, 3kg of silane-based powder, 3kg of bentonite and 2kg of polypropylene fiber according to the proportion;
(2) feeding 1: sequentially putting quartz sand, cement and gypsum into a stirrer, and stirring for 20-30 s to form a mixture 1;
(3) feeding 2: and sequentially adding the redispersible latex powder, the cellulose ether, the polycarboxylic acid water reducing agent, the silane-based powder, the bentonite and the polypropylene fiber into the mixture 1, and continuously stirring for 180-200 s to form the special bonding mortar for the aerated concrete insulation board.
The bonding mortar special for aerated concrete insulation boards formed in the embodiments 1, 2 and 3 were tested for the compressive strength of 28d and the tensile bonding strength of 14d, and the test results are shown in table 1:
| practice of the invention Example (b) | Cement （kg) | Gypsum plaster （kg) | Quartz sand （kg) | Redispersible latex Powder (kg) | Cellulose ethers （kg) | Polycarboxylic acid water reducing agent （kg) | Silane-based powder （kg) | Bentonite clay （kg) | Polypropylene fiber （kg) | 28d compressive strength （MPa） | 14d tensile bond Strength （MPa） |
| 1 | 300 | 100 | 550 | 10 | 0.5 | 0.8 | 1 | 1 | 1 | 14.8 | 1.28 |
| 2 | 320 | 125 | 600 | 15 | 0.75 | 1 | 2 | 2 | 1.5 | 16.3 | 1.46 |
| 3 | 340 | 150 | 650 | 20 | 1 | 1.2 | 3 | 3 | 2 | 17.2 | 1.73 |
TABLE 1
In conclusion, the bonding mortar special for the aerated concrete insulation board provided by the structure of the invention has high tensile bonding strength, and the 14d tensile bonding strength can reach 1.2-1.7 MPa.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (4)
1. The special bonding mortar for the aerated concrete insulation board is characterized by comprising the following raw materials in parts by weight:
the preparation method of the special bonding mortar comprises the following steps:
(1) raw material metering: weighing cement, gypsum, quartz sand, redispersible latex powder, cellulose ether, a polycarboxylic acid water reducing agent, silane-based powder, bentonite and polypropylene fiber according to a proportion;
(2) feeding 1: sequentially putting quartz sand, cement and gypsum into a stirrer, and stirring for 20-30 s to form a mixture 1;
(3) feeding 2: and sequentially adding the redispersible latex powder, the cellulose ether, the polycarboxylic acid water reducing agent, the silane-based powder, the bentonite and the polypropylene fiber into the mixture 1, and continuously stirring for 180-200 s to form the special bonding mortar for the aerated concrete insulation board.
2. The bonding mortar special for the aerated concrete insulation board according to claim 1, wherein the cement is early strength type ordinary portland cement with the strength of 42.5.
3. The bonding mortar special for the aerated concrete insulation board according to claim 1, wherein the particle size of the quartz sand is less than 1 mm.
4. The special bonding mortar for aerated concrete insulation boards according to claim 1, wherein the polycarboxylate superplasticizer is powdery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911382053.3A CN111039625B (en) | 2019-12-28 | 2019-12-28 | Special bonding mortar for aerated concrete insulation board |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911382053.3A CN111039625B (en) | 2019-12-28 | 2019-12-28 | Special bonding mortar for aerated concrete insulation board |
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| CN111039625A CN111039625A (en) | 2020-04-21 |
| CN111039625B true CN111039625B (en) | 2022-04-12 |
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| CN114873974A (en) * | 2022-06-09 | 2022-08-09 | 上海市建筑科学研究院有限公司 | Anti-crack bonding mortar for autoclaved aerated concrete slab and preparation method thereof |
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Denomination of invention: A Special Adhesive Mortar for Aerated Concrete Insulation Board Effective date of registration: 20230403 Granted publication date: 20220412 Pledgee: Xixian New District Financing Guarantee Co.,Ltd. Pledgor: Shaanxi Nitya New Materials Technology Co.,Ltd. Registration number: Y2023610000239 |
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