CN107963860B - Wet-mixed plastering mortar - Google Patents
Wet-mixed plastering mortar Download PDFInfo
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- CN107963860B CN107963860B CN201711443895.6A CN201711443895A CN107963860B CN 107963860 B CN107963860 B CN 107963860B CN 201711443895 A CN201711443895 A CN 201711443895A CN 107963860 B CN107963860 B CN 107963860B
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- plastering mortar
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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
- C04B2111/00482—Coating or impregnation materials
- C04B2111/00508—Cement paints
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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
- 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 provides wet-mixed plastering mortar, which belongs to the technical field of wet-mixed mortar, and improves the performances of plasticity, bonding tensile strength and the like of the wet-mixed plastering mortar by doping alkali mud and furnace slag, so that the obtained wet-mixed plastering mortar is not easy to dry and crack, has a smooth surface and a good heat preservation effect when being used, is suitable for conventional inner and outer wall plastering and thin layer plastering, can solve the pollution problem of the alkali mud and the furnace slag, and can reduce the production cost of the wet-mixed plastering mortar. The wet-mixed plastering mortar comprises cement, water, alkali mud, furnace slag, mineral powder and sand; the weight portions of the components are as follows: 180 parts of cement 140-containing materials, 240 parts of water, 30-50 parts of alkaline mud, 40-60 parts of furnace slag, 50-70 parts of mineral powder and 1400 parts of sand 1340-containing materials.
Description
Technical Field
The invention belongs to the technical field of wet-mixed mortar, and particularly relates to wet-mixed plastering mortar.
Background
The wet-mixed plastering mortar is one of the main engineering raw materials in the current building construction, and has the characteristics of rich raw materials, low price, simple production process, convenient construction, good heat preservation effect and the like, so the using amount in the building construction is more and more large. Meanwhile, the wet-mixed plastering mortar also has the characteristics of strong plasticity, stable quality, good durability, convenient construction, environmental protection, sanitation and the like. The common dry-mixed plastering mortar is prepared by mixing cement, river sand and clear water, and plays roles of heat preservation and decoration on buildings after hardening, and the common dry-mixed plastering mortar does not have the advantages of wet-mixed plastering mortar. However, the existing wet-mixed plastering mortar still has the problem of easy shrinkage and cracking after being hardened, and the application of the existing wet-mixed plastering mortar in thin-layer plastering engineering is limited.
The alkali mud is waste material of alkali factory, also called salt mud and white mud, and is mud discharged in the process of preparing chlorine, hydrogen and caustic soda by using salt as main raw material and using electrolysis method in alkali-making industry, and its main components are: mg (OH)2、CaCO3、BaSO4And silt. At present, 1.5t-2.5t of alkali mud is generated every 1t of alkali is prepared, and a general alkali plant usually adopts a burying mode to treat the alkali mud, wherein the treatment mode not only pollutes the environment, but also consumes huge cost.
Slag is a melt floating on the surface of liquid materials such as metals generated in the pyrometallurgical process, and is also called as slag, the composition of the slag is mainly oxides (silicon dioxide, aluminum oxide, calcium oxide and magnesium oxide), sulfides are often contained, a small amount of metals are carried in the slag, and the slag is used as a waste, not only occupies the field, but also pollutes the environment.
If the alkali mud and the slag can be utilized to produce the wet-mixed plastering mortar which is not easy to shrink and crack and is suitable for thin-layer plastering, the problem of pollution of the alkali mud and the slag is solved, and the production cost of the wet-mixed plastering mortar is reduced, the method has important significance.
Disclosure of Invention
The invention aims to provide wet-mixed plastering mortar doped with alkali mud and furnace slag, so as to improve the performances of plasticity, bonding tensile strength and the like of the wet-mixed plastering mortar, and the obtained wet-mixed plastering mortar is not easy to dry and crack, has smooth surface and good heat preservation effect when in use, is suitable for conventional inner and outer wall plastering and thin layer plastering, can solve the pollution problem of the alkali mud and the furnace slag, and can reduce the production cost of the wet-mixed plastering mortar.
In order to achieve the purpose, the invention adopts the technical scheme that:
a wet-mixed plastering mortar comprises cement, water, alkali mud, furnace slag, mineral powder and sand; the weight portions of the components are as follows: 180 parts of cement 140-containing materials, 240 parts of water, 30-50 parts of alkaline mud, 40-60 parts of furnace slag, 50-70 parts of mineral powder and 1400 parts of sand 1340-containing materials.
Preferably, in the wet-mixed plastering mortar, the weight parts of the components are as follows: 160 parts of cement, 240 parts of water, 40 parts of alkali mud, 50 parts of furnace slag, 60 parts of mineral powder and 1350 parts of sand.
Preferably, the alkali mud is dried powdery alkali mud particles, and the particle size of the alkali mud particles is less than 0.315 mm.
Preferably, the slag is dried powdered slag particles having a particle size of less than 0.15 mm.
Preferably, the cement is P.O 42.5.5 cement.
Preferably, the ore powder is S95-grade ore powder, and the specific surface area of the ore powder is 400m2Kg, 28 days activity index 95%, fluidity ratio 100%.
Preferably, the sand is medium sand, the particle size of the sand is less than 4.75mm, and the mud content is not more than 5%.
Compared with the prior art, the invention has the advantages and positive effects that:
1. the wet-mixed plastering mortar obtained by compounding the alkali mud and the furnace slag has good plasticity, high bonding degree, difficult drying cracking during use, smooth surface and good heat preservation effect, is not only suitable for conventional inner and outer wall plastering, but also particularly suitable for thin-layer plastering, solves the pollution problem of the alkali mud, reduces the production cost of the wet-mixed plastering mortar, and can create good economic and social benefits;
2. after the alkali mud and the slag are doped into the wet-mixed plastering mortar provided by the invention, a mortar plasticizer is not required to be added, and the obtained wet-mixed plastering mortar still has good plasticity and caking property;
3. the invention adopts the alkaline cement and the furnace slag to replace the cement and the fly ash, has certain economic and environmental benefits compared with the conventional wet-mixed plastering mortar, simultaneously reduces the production cost of the wet-mixed plastering mortar and ensures the performance index of the product by reasonably optimizing the mixing ratio of the wet-mixed plastering mortar, has good market prospect, and conforms to the national promoted circular economy mode.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides wet-mixed plastering mortar, which comprises cement, water, alkaline mud, furnace slag, mineral powder and sand; the weight portions of the components are as follows: 180 parts of cement 140-containing materials, 240 parts of water, 30-50 parts of alkaline mud, 40-60 parts of furnace slag, 50-70 parts of mineral powder and 1400 parts of sand 1340-containing materials. In the wet-mixed plastering mortar, Mg (OH) in the alkali mud2In alkaline environment with CO in air2The reaction produces basic magnesium carbonateThe basic magnesium carbonate has excellent shrinkage compensation capacity, so that shrinkage cracking of the wet-mixed plastering mortar after hardening can be effectively prevented, and the wear resistance of the wet-mixed plastering mortar can be greatly improved; and the calcium carbonate and the barium sulfate in the alkali mud belong to very stable metal salts, so that the plasticity of the mortar can be greatly enhanced, and excellent working performance can be obtained. The wet-mixed plastering mortar is added with furnace slag to replace the common fly ash, can be matched with alkali mud, improves the bonding tensile strength of the mortar, and is beneficial to further reducing the dry shrinkage of the mortar.
The wet-mixed plastering mortar has good plasticity, high bonding degree, difficult drying cracking during use, smooth surface and good heat preservation effect by compounding the alkali mud and the furnace slag, and is not only suitable for conventional inner and outer wall plastering, but also particularly suitable for thin-layer plastering. Meanwhile, after the alkali mud and the slag are doped, a mortar plasticizer is not required to be added, and the obtained wet-mixed plastering mortar still has good plasticity and bonding degree. In addition, the alkali mud and the slag are adopted to replace the cement and the fly ash, so that the consumption of the cement is less compared with the conventional wet-mixed plastering mortar, and the production cost is greatly reduced.
It is understood that the weight portions of the components in the wet-mixed plastering mortar can be reasonably adjusted within the range, such as: 140, 150, 160, 170 or 180 parts of cement, 30, 35, 40, 45 or 50 parts of alkali mud, 40, 45, 50, 55 or 60 parts of slag, 50, 55, 60, 65 or 70 parts of ore powder and 1340, 1360, 1380 or 1400 parts of sand.
In a preferred embodiment, the wet-mixed plastering mortar comprises the following components in parts by weight: 160 parts of cement, 240 parts of water, 40 parts of alkali mud, 50 parts of furnace slag, 60 parts of mineral powder and 1350 parts of sand. The proportion is the optimal proportion, and the obtained wet-mixed plastering mortar has the best comprehensive performance.
In a preferred embodiment, the alkali mud is dried powdery alkali mud particles with the particle size of less than 0.315 mm. In the preferred embodiment, the alkali mud used is further limited, and the alkali mud with the particle size of less than 0.315mm and powdery particles is more easily and uniformly dispersed in the wet-mixed plastering mortar, which is beneficial to ensuring the plasticity of the wet-mixed plastering mortar.
In a preferred embodiment, the slag is dried powdered slag particles having a particle size of less than 0.15 mm. In the preferred embodiment, the slag used is further limited, and slag with the particle size of less than 0.15mm and powdery particles is easier to disperse in the wet-mixed plastering mortar, which is beneficial to ensuring the workability of the wet-mixed plastering mortar.
In a preferred embodiment, the cement is P.O 42.5.5 cement. It should be noted that, in the present invention, since the cement content is 140-180 parts and the cement is used as the main cementing material for setting and hardening the mortar, P.O 42.5.5 cement is added at this low cement content, so as to obtain the most economical production cost on the premise of ensuring the working performance.
In a preferred embodiment, the ore powder is grade S95 ore powder, and the specific surface area of the ore powder is 400m2Kg, 28 days activity index 95%, fluidity ratio 100%. The mineral powder can be better matched with cement, alkali mud, furnace slag, sand and the like, and the internal structure of the wet-mixed plastering mortar is improved, so that better working performance is obtained.
In a preferred embodiment, the sand is medium sand, the grain diameter of the sand is less than 4.75mm, and the mud content is not more than 5%. It should be noted that river sand is preferably used as the sand, and the particle size is more suitable. The sand is easier to meet the requirements of thin layer construction and obtains excellent plasticity.
In order to more clearly and specifically describe the wet-mixed plastering mortar provided by the embodiment of the present invention, the following description will be given with reference to specific embodiments.
Example 1
The wet-mixed plastering mortar comprises the following components in parts by weight: 140kg of cement, 240kg of water, 50kg of alkali mud, 60kg of slag, 70kg of mineral powder and 1340kg of sand.
Wherein the alkali mud is dried powdery alkali mud particles, and the particle size of the alkali mud particles is less than 0.315 mm; the slag is dried powder slag particles, and the particle size of the slag particles is less than 0.15 mm; the cement is P.O 42.5.5 cement; the mineral powder is S95 grade mineral powder, and the specific surface area of the mineral powderIs 400m2Kg, 28 days activity index 95%, fluidity ratio 100%; the sand is river sand, belongs to medium sand, and all sand particles can pass through a standard sieve with 4.75mm square holes, the particle size of the sand is less than 4.75mm, and the mud content is not more than 5%.
Example 2
The wet-mixed plastering mortar comprises the following components in parts by weight: 160kg of cement, 240kg of water, 40kg of alkaline mud, 50kg of slag, 60kg of mineral powder and 1350kg of sand; the materials were selected as in example 1.
Example 3
The wet-mixed plastering mortar comprises the following components in parts by weight: 180kg of cement, 240kg of water, 30kg of alkali mud, 40kg of slag, 50kg of mineral powder and 1360kg of sand; the materials were selected as in example 1.
Comparative example
The existing wet-mixed plastering mortar of cement fly ash is prepared by P.O 42.5.5 cement; the sand is medium sand; the fly ash is II-grade ash; the mortar plasticizer is a standard type mortar plasticizer. The specific formulation is as follows 1:
TABLE 1 proportioning table/kg of wet-mixed plastering mortar of cement fly ash
| Cement | Fly ash | Sand | Water (W) | Mortar plasticizer |
| 208 | 52 | 1400 | 240 | 5.2 |
The wet-mixed plastering mortar prepared in the above examples and comparative examples were subjected to a performance test to obtain the following table 2.
TABLE 2 Performance test Table
As can be seen from table 2, the wet-mixed plastering mortar provided by the invention has excellent plasticity after being doped with the alkali mud and the slag without adding a mortar plasticizer, and has superior working performance in terms of layering degree, bonding tensile strength and compressive strength compared with the existing cement fly ash wet-mixed plastering mortar. Moreover, the wet-mixed plastering mortar doped with the alkali mud and the furnace slag has small shrinkage after hardening and difficult dry cracking, and is not only suitable for traditional inner and outer wall plastering, but also more suitable for thin layer plastering engineering. Meanwhile, compared with the existing cement fly ash wet-mixed plastering mortar, the invention adopts the alkaline cement and the slag to replace the cement and the fly ash, thereby greatly reducing the consumption of the cement and obviously lowering the production cost. In addition, the invention utilizes industrial waste by doping the alkali mud and the furnace slag as the rubber substitute, reduces the environmental pollution, and generates economic benefit while processing the waste.
Claims (7)
1. The wet-mixed plastering mortar is characterized by comprising cement, water, alkaline mud, furnace slag, mineral powder and sand, and does not contain a mortar plasticizer; the weight portions of the components are as follows: 180 parts of cement 140-containing materials, 240 parts of water, 30-50 parts of alkaline mud, 40-60 parts of furnace slag, 50-70 parts of mineral powder and 1400 parts of sand 1340-containing materials.
2. The wet-mixed plastering mortar of claim 1, wherein: the weight portions of the components are as follows: 160 parts of cement, 240 parts of water, 40 parts of alkali mud, 50 parts of furnace slag, 60 parts of mineral powder and 1350 parts of sand.
3. The wet-mix plastering mortar of claim 1 or 2, wherein: the alkali mud is dried powdery alkali mud particles, and the particle size of the alkali mud particles is less than 0.315 mm.
4. The wet-mix plastering mortar of claim 1 or 2, wherein: the slag is dried powder slag particles, and the particle size of the slag particles is less than 0.15 mm.
5. The wet-mix plastering mortar of claim 1 or 2, wherein: the cement is P.O 42.5.5 cement.
6. The wet-mix plastering mortar of claim 1 or 2, wherein: the mineral powder is S95 grade mineral powder, and the specific surface area of the mineral powder is 400m2Kg, 28 days activity index 95%, fluidity ratio 100%.
7. The wet-mix plastering mortar of claim 1 or 2, wherein: the sand is medium sand, the grain diameter of the sand is less than 4.75mm, and the mud content is not more than 5%.
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| CN201711443895.6A CN107963860B (en) | 2017-12-27 | 2017-12-27 | Wet-mixed plastering mortar |
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| CN108516862A (en) * | 2018-06-25 | 2018-09-11 | 东台市卢顺建材有限公司 | A kind of gypsum and preparation method thereof |
| CN111848034B (en) * | 2020-07-16 | 2022-05-10 | 广州大学 | Wet-mixed mortar and preparation process thereof |
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| US5374308A (en) * | 1993-05-27 | 1994-12-20 | Kirkpatrick; William D. | Blended hydraulic cement for both general and special applications |
| HUP0102565A3 (en) * | 1998-05-22 | 2004-04-28 | Iko Minerals Gmbh | Material for impervious walls, consisting of an activated clay mineral powder with a hydraulic binding agent |
| EP2559674A1 (en) * | 2011-08-18 | 2013-02-20 | HeidelbergCement AG | Ternesite - belite - calcium sulfoaluminate brick and method for producing same |
| CN104556875B (en) * | 2014-12-31 | 2016-08-31 | 青岛磊鑫混凝土有限公司 | Use aggregate chips and the wet-mixing motar of CHARACTERISTICS OF TAILINGS SAND preparation |
| CN106986592A (en) * | 2017-03-29 | 2017-07-28 | 南京德磊科技有限公司 | A kind of method of alkaline residue making brick from sludge |
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