CN114394790A - Mortar preparation method suitable for severe cold zone - Google Patents
Mortar preparation method suitable for severe cold zone Download PDFInfo
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- CN114394790A CN114394790A CN202111173962.3A CN202111173962A CN114394790A CN 114394790 A CN114394790 A CN 114394790A CN 202111173962 A CN202111173962 A CN 202111173962A CN 114394790 A CN114394790 A CN 114394790A
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- aluminum powder
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- severe cold
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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
-
- 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
- C04B2111/40—Porous or lightweight materials
-
- 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
- C04B2111/76—Use at unusual temperatures, e.g. sub-zero
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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 mortar preparation method suitable for severe cold zones, which comprises the following steps: step one, weighing raw materials; step two, modifying the expanded perlite by adopting a water repellent; mixing cement, sand, a swelling agent, aluminum powder, expanded perlite, a water reducing agent and an air entraining agent to obtain a mixture; step four, when the water-based paint needs to be used, mixing the mixture with water according to the weight ratio of 10-15: 1-2, and then adding a pH regulator to regulate the pH to 12-14, thus obtaining the mortar suitable for severe cold zones. According to the invention, the air entraining agent is adopted to form micro bubbles, the aluminum powder forms bubbles with different sizes in an alkaline environment, and the expanded perlite expands to form bubbles with rich scales from micro to macro, so that the heat bridge is effectively isolated, and the heat insulation performance of the building in cold regions is improved.
Description
Technical Field
The invention belongs to the field of concrete, and particularly relates to a mortar preparation method suitable for severe cold zones.
Background
The existing buildings are usually made of autoclaved aerated concrete blocks or hollow bricks and the like. However, the autoclaved aerated concrete block or hollow brick has good heat preservation and sound insulation functions because of a plurality of bubbles in the autoclaved aerated concrete block or hollow brick. However, the bonding material between the building blocks is usually common mortar, which causes heat bridge formation at the brief material of the building, and causes poor overall insulation performance of the building, and needs to be improved.
Disclosure of Invention
In order to solve the problems, the invention discloses a mortar preparation method suitable for severe cold zones. According to the invention, the air entraining agent is adopted to form micro bubbles, the aluminum powder forms bubbles with different sizes in an alkaline environment, and the expanded perlite expands to form bubbles with rich scales from micro to macro, so that the heat bridge is effectively isolated, and the heat insulation performance of the building in cold regions is improved.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a preparation method of mortar suitable for severe cold zones comprises the following steps:
step one, weighing raw materials: respectively weighing 75-85 parts of cement, 150 parts of sand 110-sand, 3-8 parts of swelling agent, 1-6 parts of pH regulator, 5-9 parts of aluminum powder, 10-15 parts of expanded perlite, 2-4 parts of water reducer and 0.02-3 parts of air entraining agent;
step two, modifying the expanded perlite by adopting a water repellent;
mixing cement, sand, a swelling agent, aluminum powder, expanded perlite, a water reducing agent and an air entraining agent to obtain a mixture;
step four, when the water-based paint needs to be used, mixing the mixture with water according to the weight ratio of 10-15: 1-2, and then adding a pH regulator to regulate the pH to 12-14, thus obtaining the mortar suitable for severe cold zones.
Further improved, the aluminum powder comprises 25 percent of aluminum powder with the diameter of 15-20 mu m, 45 percent of aluminum powder with the diameter of 50-100 mu m and 30 percent of aluminum powder with the diameter of 150-300 mu m.
In a further improvement, the swelling agent is a calcium sulphoaluminate swelling agent, an alunite swelling agent, a CSA swelling agent or a U-shaped swelling agent.
In a further improvement, the pH regulator is quicklime.
Further improved, the water reducing agent is a naphthalene high-efficiency water reducing agent or a lignosulfonate water reducing agent.
In a further improvement, the air entraining agent is sodium alkyl sulfonate, linear alkyl sulfonate or dodecyl sulfate.
In the step one, 80 parts by weight of cement, 120 parts by weight of sand, 4 parts by weight of swelling agent, 5 parts by weight of pH regulator, 6 parts by weight of aluminum powder, 12 parts by weight of expanded perlite, 3 parts by weight of water reducer and 1 part by weight of air entraining agent are respectively weighed.
The invention has the advantages that:
1. the aluminum powder with different particle diameters is added, so that hydrogen bubbles with different particle diameters can be generated in an alkaline environment, and a thermal bridge is cut off.
2. The expanded perlite expands to form larger bubbles, thereby forming primary closed cells.
3. The air bubbles formed by the air entraining agent form a filling effect, and the thermal bridge partition performance is effectively improved.
Detailed Description
The technical means of the present invention will be specifically described below by way of specific embodiments.
Example 1
A preparation method of mortar suitable for severe cold zones comprises the following steps:
step one, weighing raw materials: respectively weighing 75 parts by weight of cement, 110 parts by weight of sand, 3 parts by weight of calcium sulphoaluminate expanding agent, 1 part by weight of quick lime, 5 parts by weight of aluminum powder, 10 parts by weight of expanded perlite, 2 parts by weight of naphthalene-based high-efficiency water reducing agent and 0.02 part by weight of sodium alkylsulfonate; the aluminum powder comprises 25% of aluminum powder with the diameter of 15-20 μm, 45% of aluminum powder with the diameter of 50-100 μm and 30% of aluminum powder with the diameter of 150-300 μm.
Step two, modifying the expanded perlite by adopting a water repellent;
mixing cement, sand, a swelling agent, aluminum powder, expanded perlite, a water reducing agent and an air entraining agent to obtain a mixture;
step four, when the water-based paint needs to be used, mixing the mixture with water according to the ratio of 10: 1, and then adding a pH regulator to regulate the pH to 12, thus obtaining the mortar suitable for severe cold zones.
Example 2
A preparation method of mortar suitable for severe cold zones comprises the following steps:
step one, weighing raw materials: weighing 85 parts by weight of cement, 150 parts by weight of sand, 8 parts by weight of alunite expanding agent, 6 parts by weight of quick lime, 9 parts by weight of aluminum powder, 15 parts by weight of expanded perlite, 4 parts by weight of lignosulfonate water reducing agent and 3 parts by weight of linear alkyl sulfonate respectively; the aluminum powder comprises 25% of aluminum powder with the diameter of 15-20 μm, 45% of aluminum powder with the diameter of 50-100 μm and 30% of aluminum powder with the diameter of 150-300 μm.
Step two, modifying the expanded perlite by adopting a water repellent;
mixing cement, sand, a swelling agent, aluminum powder, expanded perlite, a water reducing agent and an air entraining agent to obtain a mixture;
step four, when the water-based paint needs to be used, mixing the mixture with water according to the weight ratio of 15: 2, and then adding a pH regulator to regulate the pH to 14 to obtain the mortar suitable for severe cold zones.
Example 3
A preparation method of mortar suitable for severe cold zones comprises the following steps:
step one, weighing raw materials: respectively weighing 80 parts by weight of cement, 120 parts by weight of sand, 4 parts by weight of CSA expanding agent, 5 parts by weight of quick lime, 6 parts by weight of aluminum powder, 12 parts by weight of expanded perlite, 3 parts by weight of lignosulfonate water reducer and 1 part by weight of dodecyl sulfate; the aluminum powder comprises 25% of aluminum powder with the diameter of 15-20 μm, 45% of aluminum powder with the diameter of 50-100 μm and 30% of aluminum powder with the diameter of 150-300 μm.
Step two, modifying the expanded perlite by adopting a water repellent;
mixing cement, sand, a swelling agent, aluminum powder, expanded perlite, a water reducing agent and an air entraining agent to obtain a mixture;
step four, when the water-based paint needs to be used, mixing the mixture with water according to the proportion of 12: 1.5, and then adding a pH regulator to regulate the pH to 13, thus obtaining the mortar suitable for severe cold zones.
According to the invention, the air entraining agent is adopted to form micro bubbles, the aluminum powder forms bubbles with different sizes in an alkaline environment, and the expanded perlite expands to form bubbles with rich scales from micro to macro, so that the heat bridge is effectively isolated, and the heat insulation performance of the building in cold regions is improved.
While embodiments of the invention have been disclosed above, it is not limited to the applications set forth in the description and embodiments, which are fully applicable to various fields of endeavor for which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described without departing from the generic concept as defined by the claims and the equivalents thereof.
Claims (7)
1. A mortar preparation method suitable for severe cold zones is characterized by comprising the following steps:
step one, weighing raw materials: respectively weighing 75-85 parts of cement, 150 parts of sand 110-sand, 3-8 parts of swelling agent, 1-6 parts of pH regulator, 5-9 parts of aluminum powder, 10-15 parts of expanded perlite, 2-4 parts of water reducer and 0.02-3 parts of air entraining agent;
step two, modifying the expanded perlite by adopting a water repellent;
mixing cement, sand, a swelling agent, aluminum powder, expanded perlite, a water reducing agent and an air entraining agent to obtain a mixture;
step four, when the water-based paint needs to be used, mixing the mixture with water according to the weight ratio of 10-15: 1-2, and then adding a pH regulator to regulate the pH to 12-14, thus obtaining the mortar suitable for severe cold zones.
2. The mortar preparation method for severe cold regions according to claim 1, wherein the aluminum powder comprises 25% of aluminum powder with diameter of 15-20 μm, 45% of aluminum powder with diameter of 50-100 μm, and 30% of aluminum powder with diameter of 150-300 μm.
3. The method of producing mortar for severe cold regions according to claim 1, wherein the swelling agent is a calcium sulfoaluminate swelling agent, an alunite swelling agent, a CSA swelling agent, or a U-type swelling agent.
4. The method of preparing mortar suitable for severe cold zones according to claim 1, wherein the pH modifier is quicklime.
5. The method for preparing mortar suitable for severe cold zones according to claim 1, wherein the water reducing agent is a naphthalene-based high-efficiency water reducing agent or a lignosulfonate water reducing agent.
6. The method for preparing mortar suitable for severe cold zones according to claim 1, wherein the air-entraining agent is sodium alkylsulfonate, linear alkylsulfonate or dodecyl sulfate.
7. The preparation method of mortar suitable for severe cold zones according to claim 1, wherein in the first step, 80 parts by weight of cement, 120 parts by weight of sand, 4 parts by weight of swelling agent, 5 parts by weight of pH regulator, 6 parts by weight of aluminum powder, 12 parts by weight of expanded perlite, 3 parts by weight of water reducer and 1 part by weight of air-entraining agent are respectively weighed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111173962.3A CN114394790A (en) | 2021-10-09 | 2021-10-09 | Mortar preparation method suitable for severe cold zone |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111173962.3A CN114394790A (en) | 2021-10-09 | 2021-10-09 | Mortar preparation method suitable for severe cold zone |
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| CN114394790A true CN114394790A (en) | 2022-04-26 |
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| CN202111173962.3A Withdrawn CN114394790A (en) | 2021-10-09 | 2021-10-09 | Mortar preparation method suitable for severe cold zone |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007238358A (en) * | 2006-03-07 | 2007-09-20 | Toden Kogyo Co Ltd | Ultra lightweight foamed mortar composition and ultra lightweight foamed mortar |
| CN103073235A (en) * | 2012-12-28 | 2013-05-01 | 中国铁道科学研究院金属及化学研究所 | Cement-emulsified asphalt mortar for slab tracks in severe cold areas |
| CN103553478A (en) * | 2013-11-11 | 2014-02-05 | 吉林建筑大学 | Insulation masonry mortar for aerated concrete self-insulation building blocks in severe cold area and production method of insulation masonry mortar |
| CN103922789A (en) * | 2014-03-20 | 2014-07-16 | 马鞍山实达建材科技有限公司 | Inorganic foaming thermal-insulation mortar and preparation method thereof |
| CN105254252A (en) * | 2015-09-30 | 2016-01-20 | 沈阳建筑大学 | Hydrophobic expansive perlite waterproof heat insulation mortar and preparation method thereof |
| CN111646735A (en) * | 2020-03-24 | 2020-09-11 | 江苏三友建材科技有限公司 | Novel self-leveling heat insulation material and preparation method thereof |
-
2021
- 2021-10-09 CN CN202111173962.3A patent/CN114394790A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007238358A (en) * | 2006-03-07 | 2007-09-20 | Toden Kogyo Co Ltd | Ultra lightweight foamed mortar composition and ultra lightweight foamed mortar |
| CN103073235A (en) * | 2012-12-28 | 2013-05-01 | 中国铁道科学研究院金属及化学研究所 | Cement-emulsified asphalt mortar for slab tracks in severe cold areas |
| CN103553478A (en) * | 2013-11-11 | 2014-02-05 | 吉林建筑大学 | Insulation masonry mortar for aerated concrete self-insulation building blocks in severe cold area and production method of insulation masonry mortar |
| CN103922789A (en) * | 2014-03-20 | 2014-07-16 | 马鞍山实达建材科技有限公司 | Inorganic foaming thermal-insulation mortar and preparation method thereof |
| CN105254252A (en) * | 2015-09-30 | 2016-01-20 | 沈阳建筑大学 | Hydrophobic expansive perlite waterproof heat insulation mortar and preparation method thereof |
| CN111646735A (en) * | 2020-03-24 | 2020-09-11 | 江苏三友建材科技有限公司 | Novel self-leveling heat insulation material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 吴科如等: "《土木工程材料》", 31 August 2011, 同济大学出版社 * |
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Application publication date: 20220426 |