CN114988822A - Environment-friendly anti-cracking decorative mortar and preparation method thereof - Google Patents
Environment-friendly anti-cracking decorative mortar and preparation method thereof Download PDFInfo
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- CN114988822A CN114988822A CN202210739510.5A CN202210739510A CN114988822A CN 114988822 A CN114988822 A CN 114988822A CN 202210739510 A CN202210739510 A CN 202210739510A CN 114988822 A CN114988822 A CN 114988822A
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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
- C04B28/06—Aluminous cements
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00025—Aspects relating to the protection of the health, e.g. materials containing special additives to afford skin protection
-
- 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
-
- 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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- 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
Abstract
The invention discloses environment-friendly anti-cracking decorative mortar and a preparation method thereof, and belongs to the technical field of building materials. The invention relates to environment-friendly anti-cracking decorative mortar which comprises the following components in percentage by mass: 40-60% of aggregate, 20-30% of cement, 2-5% of additive, 0.5-2% of lignin fiber and 1-3.5% of modified wollastonite, wherein the modified wollastonite is prepared from wollastonite powder and sodium monostearyl sulfosuccinate, the wollastonite powder is in a needle-shaped structure, a microporous structure is distributed on the surface of the wollastonite powder, and the sodium monostearyl sulfosuccinate is loaded in micropores. By adopting the mortar formula and the preparation process, the strength and the crack resistance of the decorative mortar can be effectively ensured, and the preparation process is simple, environment-friendly and harmless.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to environment-friendly anti-cracking decorative mortar and a manufacturing method thereof.
Background
At present, more than 90% of indoor wall decoration uses materials such as ceramic tiles, emulsion paint, wallpaper and the like, however, the emulsion paint, the wallpaper and other decoration materials meet the aesthetic requirements of human beings and bring serious environmental pollution. With the improvement of living standard and health and environmental protection consciousness of people, the requirements on environmental protection, simplicity, artistry and individuation of architectural decoration are higher and higher. Therefore, the development and research of the building environment-friendly mortar become one of the research hotspots in the field of building materials in recent years.
The building environment-friendly mortar not only meets the environment-friendly requirement, but also has higher requirements on the strength and the crack resistance of the mortar. In recent years, the anti-cracking mortar in China has more researches and is popularized and applied in practical engineering on a large scale, but the heat-insulating mortar in the existing market still has the defects of low strength and easy cracking after solidification.
Through retrieval, the application with the Chinese patent application number of 2016107064997 discloses an anti-crack mortar and a manufacturing method thereof, and the anti-crack mortar of the application consists of lightweight aggregate, cement, talcum powder, wollastonite, asbestos powder, nut shells, diatomite, phenolic resin, polyester fiber and an anti-crack agent; wherein, the anti-cracking agent is formed by mixing vegetable oil, carbon fiber and epoxy resin. The application can improve the crack resistance of the mortar to a certain extent by adding the crack resistance agent, but the strength and the crack resistance of the obtained mortar still need to be further improved.
Disclosure of Invention
1. Problems to be solved
The invention aims to overcome the defects that the crack resistance of the existing environment-friendly building mortar is relatively poor and needs to be further improved, and provides environment-friendly crack-resistant decorative mortar and a preparation method thereof. The mortar formula and the preparation process can effectively ensure the strength and the crack resistance of the building decoration mortar, and the preparation process is simple, environment-friendly and harmless.
2. Technical scheme
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the invention relates to environment-friendly anti-cracking decorative mortar which comprises the following components in percentage by mass:
furthermore, the modified wollastonite is prepared from wollastonite powder and sodium monostearyl sulfosuccinate, wherein the wollastonite powder is in an acicular structure, the surface of the wollastonite powder is distributed with a microporous structure, and the sodium monostearyl sulfosuccinate is loaded in micropores.
The basic unit of the wollastonite crystal structure is SiO 4 Framework and CaO 6 The composite single chains formed by the octahedral columns can still maintain the needle-like shape when being crushed into fine particles. The wollastonite powder is uniformly dispersed in the mortar by stirring step by step, part of the wollastonite powder can participate in cement hydration reaction, and the wollastonite powder can form continuous net distribution in the cement mortar in the later stage of hydration, thereby playing a role of reinforcing ribs, being beneficial to improving the strength of the mortar on one hand, and also having the functions of preventing the development of fine cracks of the mortar and resisting cracking under the action of external force on the other hand. The sodium monostearyl sulfosuccinate has lower surface tension and lower critical micelle concentration, can increase the fluidity and water retention of the mortar by being dissolved in water and dispersed to each part of the mortar, improves the toughness of the hardened mortar and prevents the later cracking of the mortar. In the invention, the sodium monostearyl sulfosuccinate is loaded in micropores on the surface of the wollastonite powder, so that the dispersion uniformity of the sodium monostearyl sulfosuccinate is further ensured, and the strength and the toughness of the mortar can be further ensured through the combined action of the wollastonite powder and the sodium monostearyl sulfosuccinate.
Furthermore, the particle size of the wollastonite powder is 800-2000 meshes, and the loading amount of the sodium sulfosuccinate is 5-20% of the mass of the wollastonite powder.
Furthermore, the aggregate is composed of coarse sand, medium sand, fine sand and construction solid waste particles, the particle sizes of the coarse sand, the medium sand, the fine sand and the construction solid waste particles are respectively 0.5-1 mm, 0.25-0.5 mm, 0.125-0.25 mm and 0.2-0.5 mm, and the mass percentages of the aggregates are respectively 5% -10%, 15-30%, 40% -70% and 10% -20%. By optimizing the composition and the proportion of the aggregates, the aggregates have good grading relation, so that the overall strength of the mortar can be effectively ensured. Specifically, the building solid waste particles are crushed powder particles such as red bricks, hardened concrete or stones.
Furthermore, the cement is prepared from 32.5-grade sulphoaluminate cement and ordinary portland cement, and the mass ratio of the two is (3-4): 1. The sulphoaluminate cement has high early strength and low alkalinity, can prevent the alkali return phenomenon from occurring in the later period of the mortar, but the later strength is reduced, and the mortar strength can be effectively enhanced by the compound addition of the common Portland cement.
Furthermore, the additive is at least one of fly ash, slag micropowder and limestone powder, and the specific surface area is not less than 380m 2 Per kg; the length of the lignin fiber is 2 mm-5 mm, the toughness of the mortar can be further increased by adding the lignin fiber, cracking is prevented, a cement hydration product can grow along the fiber, and the integrity of the hydration product is enhanced.
Furthermore, the mortar also comprises a water reducing agent, and the addition amount of the water reducing agent is 0.5-2% of the total amount of the mortar. The water reducing agent can play a role in reducing water and early strength. Specifically, the water reducing agent can adopt a formaldehyde condensation compound of beta-sodium naphthalene sulfonate, potassium and lithium salt, the condensation compound is uniformly dispersed in mortar through adsorption on the surface of solid particles, the small molecule in the condensation compound has high movement rate, small moving resistance in solution and high adsorption rate, and large molecules and cement particles have more adsorption points, are firmly adsorbed and are not easy to desorb, so that the action effect is ensured.
The preparation method of the environment-friendly anti-cracking decorative mortar comprises the following steps:
the method comprises the following steps: putting ordinary portland cement and sulphoaluminate cement into a stirrer, and uniformly stirring and mixing to obtain a mixture A;
step two: taking 20-30% of the mixture A by mass, putting the mixture A into a stirrer, sequentially putting the additive and the lignin fiber into the stirrer, and uniformly stirring and mixing to obtain a mixture B;
step three: and stirring and mixing the aggregate, the residual mixture A, the mixture B, the modified wollastonite and the water uniformly to obtain the anti-cracking decorative mortar.
Furthermore, the preparation process of the modified wollastonite comprises the following steps: dissolving sodium monostearyl sulfosuccinate in water of 35-45 ℃, and then stirring and mixing with the wollastonite powder, so that the sodium monostearyl sulfosuccinate is loaded in micropores on the surface of the wollastonite powder.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the environment-friendly anti-cracking decorative mortar, the components and the proportion of the mortar are optimally designed, and the strength and the anti-cracking performance of the mortar can be effectively ensured through the common matching and coordination action among the components. Particularly, the strength and toughness of the mortar can be effectively improved by adding the modified wollastonite, and cracks and crack development can be prevented.
(2) The environment-friendly anti-cracking decorative mortar is characterized in that the modified wollastonite is prepared from wollastonite powder and sodium sulfosuccinate monostearate, wherein part of the wollastonite powder can participate in a cement hydration reaction, and the wollastonite powder can form continuous net distribution in cement mortar in the late stage of hydration to play a role of reinforcing ribs, and has the functions of preventing the development of fine cracks of the mortar and resisting cracking under the action of external force; and the load of the sodium monostearyl sulfosuccinate can increase the fluidity and the water retention of the mortar, improve the toughness of the hardened mortar and prevent the mortar from cracking in the later period.
(3) According to the environment-friendly anti-cracking decorative mortar, the composition and the grain size grading of the aggregate are optimized, the large-grain-size aggregate has high strength and plays a role in supporting a framework, and the fine aggregates with different grain sizes are filled into pores formed by the large-grain-size grains, so that the overall strength of the mortar is improved.
(4) According to the preparation method of the environment-friendly anti-cracking decorative mortar, disclosed by the invention, the components are effectively and fully mixed by adopting graded mixing and stirring, and particularly, the dispersion uniformity of the aggregate and the modified wollastonite in the mortar is ensured, so that the mechanical property of the obtained mortar is further ensured. In addition, the invention also consumes the wastes such as slag, fly ash, building solid wastes and the like, thereby being beneficial to environmental protection and recycling of resources.
Detailed Description
The invention is further described with reference to specific examples.
Example 1
The environment-friendly anti-cracking decorative mortar comprises the following components in percentage by mass:
the aggregate in the embodiment is composed of coarse sand, medium sand, fine sand and construction solid waste particles, the particle sizes of the coarse sand, the medium sand, the fine sand and the construction solid waste particles are respectively 0.5-1 mm, 0.25-0.5 mm, 0.125-0.25 mm and 0.2-0.5 mm, the mass percentages of the aggregates are respectively 5%, 15%, 70% and 10%, and the construction solid waste particles are powder particles obtained by crushing red bricks and hardened concrete; the cement is prepared from 32.5-grade sulphoaluminate cement and ordinary portland cement, and the mass ratio of the sulphoaluminate cement to the ordinary portland cement is 4: 1. The modified wollastonite is prepared from wollastonite powder and sodium monostearyl sulfosuccinate, wherein the wollastonite powder is in a needle-shaped structure, the particle size of the wollastonite powder is 800-1200 meshes, a microporous structure is distributed on the surface of the wollastonite powder, the sodium monostearyl sulfosuccinate is loaded in the micropores, and the loading capacity of the sodium monostearyl sulfosuccinate is 20% of the mass of the wollastonite powder. The admixture of the embodiment is at least one of fly ash, slag micropowder and limestone powder, and the specific surface area is not less than 380m 2 Per kg; the length of the lignin fiber is 2 mm-5 mm.
The preparation method of the environment-friendly anti-cracking decorative mortar comprises the following steps:
the method comprises the following steps: putting ordinary portland cement and sulphoaluminate cement into a stirrer, and stirring and mixing uniformly to prepare a mixture A;
step two: taking 20-30% of the mixture A by mass, putting the mixture A into a stirrer, sequentially putting the additive and the lignin fiber into the stirrer, and uniformly stirring and mixing to obtain a mixture B;
step three: dissolving sodium monostearyl sulfosuccinate in water of 35-45 ℃, and then stirring and mixing the sodium monostearyl sulfosuccinate and the wollastonite powder together, so that the sodium monostearyl sulfosuccinate is loaded in micropores on the surface of the wollastonite powder;
step four: and stirring and mixing the aggregate, the residual mixture A, the mixture B, the modified wollastonite and the water uniformly to obtain the anti-cracking decorative mortar.
Example 2
The environment-friendly anti-cracking decoration mortar comprises the following components in percentage by mass:
the aggregate in the embodiment is composed of coarse sand, medium sand, fine sand and construction solid waste particles, the particle sizes of the coarse sand, the medium sand, the fine sand and the construction solid waste particles are respectively 0.5-1 mm, 0.25-0.5 mm, 0.125-0.25 mm and 0.2-0.5 mm, the mass percentages of the aggregates are respectively 10%, 30%, 40% and 20%, and the construction solid waste particles are powder particles obtained by crushing hardened concrete and stones; the cement is prepared from 32.5-grade sulphoaluminate cement and ordinary portland cement, and the mass ratio of the two is 3: 1. The modified wollastonite is prepared from wollastonite powder and sodium monostearyl succinate amide sulfonate, wherein the wollastonite powder is in an acicular structure, the particle size of the wollastonite powder is 1500-2000 meshes, a microporous structure is distributed on the surface of the wollastonite powder, the sodium monostearyl succinate amide sulfonate is loaded in micropores, and the loading amount of the sodium monostearyl succinate amide sulfonate is 10 percent of the mass of the wollastonite powder.
The additive in the embodiment is at least one of fly ash, slag micropowder and limestone powder, and the specific surface area is not less than 380m 2 Per kg; the length of the lignin fiber is 2 mm-5 mm.
The preparation method of the environment-friendly anti-cracking decorative mortar comprises the following steps:
the method comprises the following steps: putting ordinary portland cement and sulphoaluminate cement into a stirrer, and uniformly stirring and mixing to obtain a mixture A;
step two: taking 20-30% of the mixture A by mass, putting the mixture A into a stirrer, sequentially putting the additive and the lignin fiber into the stirrer, and uniformly stirring and mixing to obtain a mixture B;
step three: dissolving sodium monostearyl sulfosuccinate in water of 35-45 ℃, and then stirring and mixing the sodium monostearyl sulfosuccinate and the wollastonite powder together, so that the sodium monostearyl sulfosuccinate is loaded in micropores on the surface of the wollastonite powder;
step four: and stirring and mixing the aggregate, the rest mixture A, the mixture B, the modified wollastonite and water uniformly to obtain the anti-cracking decorative mortar.
Example 3
The environment-friendly anti-cracking decorative mortar comprises the following components in percentage by mass:
the aggregate in the embodiment is composed of coarse sand, medium sand, fine sand and construction solid waste particles, the particle sizes of the coarse sand, the medium sand, the fine sand and the construction solid waste particles are respectively 0.5-1 mm, 0.25-0.5 mm, 0.125-0.25 mm and 0.2-0.5 mm, the mass percentages of the aggregates are respectively 8%, 20%, 60% and 12%, and the construction solid waste particles are powder particles obtained by crushing red bricks, hardened concrete or stones; the cement is prepared from 32.5-grade sulphoaluminate cement and ordinary portland cement, and the mass ratio of the two is 3.5: 1. The modified wollastonite is prepared from wollastonite powder and sodium monostearyl succinate amide sulfonate, wherein the wollastonite powder is in an acicular structure, the particle size of the wollastonite powder is 1000-1500 meshes, a microporous structure is distributed on the surface of the wollastonite powder, the sodium monostearyl succinate amide sulfonate is loaded in micropores, and the loading amount of the sodium monostearyl succinate amide sulfonate is 5 percent of the mass of the wollastonite powder.
The additive in the embodiment is at least one of fly ash, slag micropowder and limestone powder, and the specific surface area is not less than 380m 2 Per kg; the length of the lignin fiber is 2 mm-5 mm.
The preparation method of the indoor environment-friendly anti-cracking decoration mortar comprises the following steps:
the method comprises the following steps: putting ordinary portland cement and sulphoaluminate cement into a stirrer, and uniformly stirring and mixing to obtain a mixture A;
step two: taking 20-30% of the mixture A by mass, putting the mixture A into a stirrer, sequentially putting the additive and the lignin fiber into the stirrer, and uniformly stirring and mixing to obtain a mixture B;
step three: dissolving sodium monostearyl sulfosuccinate in water of 35-45 ℃, and then stirring and mixing the sodium monostearyl sulfosuccinate and the wollastonite powder together, so that the sodium monostearyl sulfosuccinate is loaded in micropores on the surface of the wollastonite powder;
step four: and stirring and mixing the aggregate, the residual mixture A, the mixture B, the modified wollastonite and the water uniformly to obtain the anti-cracking decorative mortar.
Example 4
The environment-friendly anti-cracking decoration mortar comprises the following components in percentage by mass:
the aggregate in the embodiment is composed of coarse sand, medium sand, fine sand and construction solid waste particles, the particle sizes of the coarse sand, the medium sand, the fine sand and the construction solid waste particles are respectively 0.5-1 mm, 0.25-0.5 mm, 0.125-0.25 mm and 0.2-0.5 mm, the mass percentages of the aggregates are respectively 6%, 22%, 56% and 16%, and the construction solid waste particles are powder particles obtained by crushing red bricks, hardened concrete or stones and the like; the cement is prepared from 32.5-grade sulphoaluminate cement and ordinary portland cement, and the mass ratio of the two is 4: 1. The modified wollastonite is prepared from wollastonite powder and sodium monostearyl succinate amide sulfonate, wherein the wollastonite powder is in an acicular structure, the particle size of the wollastonite powder is 800-2000 meshes, a micropore structure is distributed on the surface of the wollastonite powder, the sodium monostearyl succinate amide sulfonate is loaded in the micropores, and the loading amount of the sodium monostearyl succinate amide sulfonate is 17 percent of the mass of the wollastonite powder.
The additive in the embodiment is at least one of fly ash, slag micropowder and limestone powder, and the specific surface area is not less than 380m 2 Per kg; the length of the lignin fiber is 2 mm-5 mm.
The preparation method of the indoor environment-friendly anti-cracking decorative mortar comprises the following steps:
the method comprises the following steps: putting ordinary portland cement and sulphoaluminate cement into a stirrer, and uniformly stirring and mixing to obtain a mixture A;
step two: taking 20-30% of the mixture A by mass, putting the mixture A into a stirrer, sequentially putting the additive and the lignin fiber into the stirrer, and uniformly stirring and mixing to obtain a mixture B;
step three: dissolving sodium monostearyl sulfosuccinate in water of 35-45 ℃, and then stirring and mixing the sodium monostearyl sulfosuccinate and the wollastonite powder together, so that the sodium monostearyl sulfosuccinate is loaded in micropores on the surface of the wollastonite powder;
step four: and stirring and mixing the aggregate, the residual mixture A, the mixture B, the modified wollastonite and the water uniformly to obtain the anti-cracking decorative mortar.
The properties of the mortars described in examples 1-4 were tested and the results are shown in the following table. As can be seen from the data in the table, the mortar formula provided by the invention can be used for manufacturing a process, the mechanical strength of the mortar can be effectively ensured, and the cracking resistance of the mortar is better.
| Compressive strength/MPa | Flexural strength/MPa | Shrinkage ratio/% | Water absorption/%) | Water retention rate/%) | |
| Example 1 | 25.1 | 7.4 | 0.08 | 9.5 | 99.1 |
| Example 2 | 25.7 | 7.5 | 0.09 | 9.4 | 99.2 |
| EXAMPLE 3 | 27.2 | 7.3 | 0.09 | 9.5 | 99.1 |
| Example 4 | 24.8 | 7.5 | 0.06 | 9.1 | 99.3 |
Claims (10)
1. The environment-friendly anti-cracking decorative mortar is characterized by comprising the following components in percentage by mass:
2. the environment-friendly anti-cracking decoration mortar of claim 1, wherein: the modified wollastonite is prepared from wollastonite powder and sodium monostearyl succinate sulfonate, wherein the wollastonite powder is in an acicular structure, a microporous structure is distributed on the surface of the wollastonite powder, and the sodium monostearyl succinate sulfonate is loaded in micropores.
3. The environment-friendly anti-cracking decoration mortar of claim 2, wherein: the particle size of the wollastonite powder is 800-2000 meshes, and the loading amount of the sodium sulfosuccinate is 5-20% of the mass of the wollastonite powder.
4. An environment-friendly anti-cracking decorative mortar according to any one of claims 1 to 3, wherein: the aggregate is composed of coarse sand, medium sand, fine sand and construction solid waste particles, the particle sizes of the coarse sand, the medium sand, the fine sand and the construction solid waste particles are respectively 0.5-1 mm, 0.25-0.5 mm, 0.125-0.25 mm and 0.2-0.5 mm, and the mass percentages of the aggregates are respectively 5% -10%, 15-30%, 40% -70% and 10% -20%.
5. The environment-friendly anti-cracking decoration mortar of claim 4, wherein: the building solid waste particles are crushed powder particles of red bricks, hardened concrete or stones and the like.
6. The environment-friendly anti-cracking decoration mortar of claim 4, wherein: the cement is prepared from 32.5-grade sulphoaluminate cement and ordinary portland cement, and the mass ratio of the two is (3-4): 1.
7. The environment-friendly anti-cracking decoration mortar of claim 6, wherein: the additive is at least one of fly ash, slag micropowder and limestone powder, and the specific surface area is not less than 380m 2 Per kg; the length of the lignin fiber is 2 mm-5 mm.
8. The environment-friendly anti-cracking decoration mortar of claim 7, wherein: the mortar also comprises a water reducing agent, and the addition amount of the water reducing agent is 0.5-2% of the total amount of the mortar.
9. A method for preparing the environment-friendly anti-cracking decoration mortar of any one of claims 1 to 8, wherein the method comprises the following steps:
the method comprises the following steps: putting ordinary portland cement and sulphoaluminate cement into a stirrer, and uniformly stirring and mixing to obtain a mixture A;
step two: taking 20-30% of the mixture A by mass, putting the mixture A into a stirrer, sequentially putting the additive and the lignin fiber into the stirrer, and uniformly stirring and mixing to obtain a mixture B;
step three: and stirring and mixing the aggregate, the residual mixture A, the mixture B, the modified wollastonite and the water uniformly to obtain the anti-cracking decorative mortar.
10. The preparation method of the environment-friendly anti-cracking decoration mortar according to claim 9, wherein the preparation process of the modified wollastonite is as follows: dissolving sodium monostearyl sulfosuccinate in water of 35-45 ℃, and then stirring and mixing with the wollastonite powder, so that the sodium monostearyl sulfosuccinate is loaded in micropores on the surface of the wollastonite powder.
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| CN110240448A (en) * | 2019-06-24 | 2019-09-17 | 成都市易建建筑材料有限公司 | A kind of the dry-mixed plastering mortar dry blend and plastering mortar of waterproofing and anti-leakage |
| CN110981332A (en) * | 2019-11-19 | 2020-04-10 | 浙江鼎峰科技股份有限公司 | Dry-mixed plastering mortar for building solid waste recycled aggregate and preparation method thereof |
| CN113429171A (en) * | 2020-03-23 | 2021-09-24 | 柳州市环波建材有限公司 | Wall facing mortar and preparation method and use method thereof |
| CN112723841A (en) * | 2021-02-08 | 2021-04-30 | 北京金隅砂浆有限公司 | Anti-crack plastering mortar |
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