CN115594451A - Multifunctional cement slurry and preparation method and application thereof - Google Patents
Multifunctional cement slurry and preparation method and application thereof Download PDFInfo
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- CN115594451A CN115594451A CN202211329239.4A CN202211329239A CN115594451A CN 115594451 A CN115594451 A CN 115594451A CN 202211329239 A CN202211329239 A CN 202211329239A CN 115594451 A CN115594451 A CN 115594451A
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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
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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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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F21/00—Implements for finishing work on buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
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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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
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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
- C04B2111/00474—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
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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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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- 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 a multifunctional cement paste and a preparation method and application thereof, and relates to the technical field of building materials, wherein the multifunctional cement paste comprises a first component and a second component, and the first component comprises the following components in parts by weight: 45-55% of cement, 1-5% of silica fume, 2-8% of mineral powder, 1-4% of sinking beads, 32-45% of sand, 0.1-0.5% of water reducing agent, 0.01-0.2% of starch ether, 0.1-0.5% of cellulose ether and 0.1-0.5% of wood fiber, wherein the second component comprises 8-16% of pure acrylic emulsion, 18-30% of butylbenzene emulsion, 0.1-0.5% of preservative, 0.1-1.0% of defoaming agent and 55-70% of water. The multifunctional cement slurry can be used for sticking vitrified tiles, large-plate ceramic tiles and rock-plate ceramic tiles with low water absorption rate, has the effects of resisting shrinkage and effectively reducing the probability of hollowing and falling, can be used for roughening, strengthening and roughening treatment of interfaces of stable base layers such as concrete wall surfaces and the like and renovating construction of old ceramic tiles, and can be directly used as waterproof materials for kitchens and bathrooms.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to multifunctional cement slurry and a preparation method and application thereof.
Background
The ceramic tile is a building surface decoration material commonly used in the field of home decoration and engineering decoration, and along with the fact that the ceramic tile has higher and higher vitrification degree, the water absorption rate is continuously reduced, and the performance requirement on an adhesive material is higher and higher. The water absorption rate of the existing ceramic tile used in the decoration field can be lower than 0.5%, the adhesion capacity of the traditional cement mortar is general, a good pasting effect is difficult to achieve on a vitrified tile with the water absorption rate lower than 0.5%, and hollowing and peeling phenomena are easy to occur on the interface of the ceramic tile and the mortar, so that the ceramic tile falls off after being pasted.
At present, special ceramic tile glue is mainly adopted for sticking vitrified tiles, so that the soaking process of the ceramic tiles can be omitted. However, both cement mortar and tile glue have certain requirements on the roughness and water absorption of the surface of a base material to be bonded, and if the surface of the base material has the problems of much dust, looseness, too low water absorption, roughness and the like, the tile is not easily bonded, and the base layer and the surface layer are easily separated, so that the problems of hollowing, cracking, peeling and the like are caused. Particularly, vitrified tiles with low water absorption, rock plate tiles and large plate tiles with larger sizes are easy to hollowly or peel off during pasting, so that the tiles fall off from the wall surface after being pasted for a period of time.
In addition, in the decoration construction of areas such as a toilet, a kitchen and the like, waterproof layers are required to be arranged on the ground and the wall surface, and after the waterproof layers are dried, a water seepage test is carried out, and then ceramic tiles are pasted. Because the waterproof layer surface is difficult to the direct tile that pastes, generally need spread one deck cement mortar earlier, treat that cement mortar pastes the ceramic tile again after the complete drying, the fitment time limit for a project that leads to bathroom and kitchen is longer, and the waterproof layer of wall is unfavorable for adhering to of cement mortar, for the convenience wall pastes the ceramic tile, the waterproof layer of wall generally only is done apart from more than 20cm on the ground, can play good protecting effect to the ponding on ground, nevertheless to the wall splash, the trickling water then lacks the protection.
Disclosure of Invention
The invention aims to: the multifunctional cement slurry is provided to solve the problem that ceramic tiles such as low-water-absorption vitrified tiles and the like are easy to fall off when being pasted, has good waterproof performance and can be directly used as waterproof materials for kitchens and bathrooms.
The technical scheme adopted by the invention is as follows:
a multifunctional cementitious slurry comprising a first component and a second component, the first component comprising, by weight: 45-55% of cement, 1-5% of silica fume, 2-8% of mineral powder, 1-4% of sinking beads, 32-45% of sand, 0.1-0.5% of water reducing agent, 0.01-0.2% of starch ether, 0.1-0.5% of cellulose ether and 0.1-0.5% of wood fiber, wherein the second component comprises 8-16% of pure acrylic emulsion, 18-30% of butylbenzene emulsion, 0.1-0.5% of preservative, 0.1-1.0% of defoaming agent and 55-70% of water.
Preferably, the weight ratio of the first component to the second component is 1.
Preferably, the sand has a particle size of 40-140 meshes, wherein the ratio of 40-70 meshes to 70-140 meshes is 1.
Preferably, the water reducing agent is selected from a naphthalene water reducing agent, a melamine water reducing agent or a polycarboxylic acid water reducing agent.
Preferably, the cement is the cement designated by 42.5.
Preferably, the water reducing agent consists of a naphthalene water reducing agent and a polycarboxylic acid water reducing agent in a mass ratio of 5.
Preferably, the first component comprises: 50% of cement, 2.5% of silica fume, 5.0% of mineral powder, 2.5% of sinking beads, 40.0% of sand, 0.3% of water reducing agent, 0.05% of starch ether, 0.1% of cellulose ether and 0.2% of wood fiber, wherein the second component comprises 12.41% of pure acrylic emulsion, 24.81% of butylbenzene emulsion, 0.25% of preservative, 0.50% of defoaming agent and 62.03% of water.
The invention also provides a preparation method of the multifunctional cement slurry, which comprises the following steps:
s1: uniformly mixing cement, silica fume, ore, sinking beads, sand, a water reducing agent, starch ether, cellulose ether and wood fiber in proportion to obtain a first component;
s2: adding the pure acrylic emulsion, the butylbenzene emulsion, the defoaming agent and the preservative into the water according to the proportion, and uniformly mixing to obtain the second component.
The invention also provides application of the multifunctional cement slurry in pasting low-water-absorption vitrified tiles, large-plate ceramic tiles, rock-plate ceramic tiles and concrete wall roughening and roughening treatment, kitchen and bathroom waterproofing construction and old ceramic tile wall renovation.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
(1) The multifunctional cement slurry is suitable for surface treatment of base materials before tiling of low-water-absorption vitrified tiles, large-plate ceramic tiles and rock-plate ceramic tiles, can resist shrinkage, and effectively reduces the probability of hollowing and brick falling; the method is also suitable for the interface roughening enhancement and roughening treatment of stable bases such as concrete wall surfaces and the like, and can effectively improve the phenomena that other construction materials cannot be attached due to low water absorption of the base and the hollowing and layering phenomena are caused by drying shrinkage of later-stage bonding materials;
(2) The multifunctional cement slurry can be directly used as a kitchen and bathroom waterproof material, has good waterproof performance, and simultaneously ensures good bonding and firmness between tile glue and a wall body to prevent tiles from falling off;
(3) The multifunctional cement slurry can also be used for renovating the surface of an old ceramic tile, the old ceramic tile does not need to be smashed during construction, the material can be directly coated on the surface of the old ceramic tile, and a new ceramic tile is directly paved by using ceramic tile glue, so that a large amount of labor and material cost is saved.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples, and it should be understood that the specific examples described herein are only for the purpose of explaining the present invention and are not intended to limit the present invention.
The invention provides a multifunctional cement slurry, which comprises a first component and a second component, wherein the first component is a powder material, the second component is a liquid material, and the first component comprises the following components in parts by weight: 45 to 55 percent of cement, 1 to 5 percent of silica fume, 2 to 8 percent of mineral powder, 1 to 4 percent of sinking bead, 32 to 45 percent of sand, 0.1 to 0.5 percent of water reducing agent, 0.01 to 0.2 percent of starch ether, 0.1 to 0.5 percent of cellulose ether and 0.1 to 0.5 percent of wood fiber; the second component comprises 8 to 16 percent of pure acrylic emulsion, 18 to 30 percent of butylbenzene emulsion, 0.1 to 0.5 percent of preservative, 0.1 to 1.0 percent of defoaming agent and 55 to 70 percent of water.
In the first component, the grain size of the sand is 40-140 meshes, wherein the ratio of the 40-70 mesh sand to the 70-140 mesh sand is 1.
The water reducing agent is selected from a naphthalene water reducing agent, a melamine water reducing agent or a polycarboxylic acid water reducing agent, and preferably, the water reducing agent consists of the naphthalene water reducing agent and the polycarboxylic acid water reducing agent in a mass ratio of 5.
The cement is the cement marked by 42.5, and sulpho-aluminous cement can also be used.
In the second component, the preservative and the defoaming agent are all conventional products sold in the market for the putty powder.
And (2) uniformly mixing the first component and the second component to obtain the multifunctional cement slurry, wherein the weight ratio of the first component to the second component is 1.
Example 1
A multifunctional cement slurry comprises a first component and a second component, wherein the first component comprises the following components in parts by weight:
500kg of white cement with the strength grade of 42.5, 25kg of silica fume, 50kg of mineral powder, 25kg of settled beads, 50kg of 40-140-mesh sand, 350kg of 70-140-mesh sand, 2.5kg of naphthalene water reducing agent, 0.5kg of polycarboxylate water reducing agent, 0.5kg of starch ether, 1kg of cellulose ether and 2kg of wood fiber, wherein the second component comprises 180kg of pure acrylic emulsion, 170kg of butylbenzene emulsion, 2.5kg of preservative, 5kg of defoaming agent and 650kg of water.
The preparation method of the multifunctional cement slurry comprises the following steps:
s1: pouring the cement, the silica fume, the ore, the sinking beads, the sand, the water reducing agent, the starch ether, the cellulose ether and the wood fiber into a stirrer, and stirring to uniformly mix the materials to obtain a first component;
s2: pouring the water, the pure acrylic emulsion, the butylbenzene emulsion, the defoaming agent and the preservative into a stirring kettle, and starting stirring to uniformly mix the materials to obtain a second component.
The first component and the second component are stored separately, and during construction, the first component and the second component are poured into a container according to the weight ratio of 1.
Example 2
A multifunctional cement paste comprises a first component and a second component, wherein the first component comprises the following components in parts by weight:
450kg of white cement with the strength grade of 42.5, 50kg of silica fume, 20kg of mineral powder, 30kg of settled beads, 150kg of 40-140-mesh sand, 300kg of 70-140-mesh sand, 1.5kg of naphthalene water reducing agent, 1.5kg of polycarboxylate water reducing agent, 0.1kg of starch ether, 2kg of cellulose ether and 1kg of wood fiber, wherein the second component comprises 160kg of pure acrylic emulsion, 300kg of butylbenzene emulsion, 5kg of preservative, 10kg of defoaming agent and 540kg of water.
The preparation method of the multifunctional cement slurry comprises the following steps:
s1: pouring the cement, the silica fume, the ore, the sinking beads, the sand, the water reducing agent, the starch ether, the cellulose ether and the wood fiber into a stirrer, and stirring to uniformly mix the materials to obtain a first component;
s2: pouring the water, the pure acrylic emulsion, the butylbenzene emulsion, the defoaming agent and the preservative into a stirring kettle, and starting stirring to uniformly mix the materials to obtain a second component.
And (3) storing the first component and the second component separately, and pouring the first component and the second component into a container according to the weight ratio of 1.
Example 3
A multifunctional cement slurry comprises a first component and a second component, wherein the first component comprises the following components in parts by weight:
550kg of white cement with the strength grade of 42.5, 10kg of silica fume, 80kg of mineral powder, 10kg of sinking beads, 50kg of 40-140-mesh sand, 300kg of 70-140-mesh sand, 0.5kg of naphthalene water reducing agent, 2.5kg of polycarboxylate water reducing agent, 1kg of starch ether, 5kg of cellulose ether and 5kg of wood fiber, wherein the second component comprises 80kg of pure acrylic emulsion, 220kg of butylbenzene emulsion, 1.5kg of preservative, 3kg of defoaming agent and 700kg of water.
The multifunctional cement slurries of examples 1 to 3 were tested for their effect on improving the adhesive properties of concrete substrates:
several commercially available tile glues were taken and tested for their performance using concrete board substrates (compliant with the specification in annex a of ISO 13007-2, 2010) and the performance of the commercially available tile glues were tested on these concrete board substrates, using the multifunctional cement slurries of examples 1 to 3, respectively, for the napping and roughening treatment, using concrete substrates that comply with the same standard, as follows:
TABLE 1 Properties of commercially available Tile cements on concrete substrates
| Performance (N/mm 2) | Tile glue A | Tile glue B | Tile glue C |
| Tensile bond strength | 0.88 | 1.19 | 1.33 |
| Tensile bond strength after immersion in water | 0.62 | 0.93 | 1.16 |
| Tensile bond strength after heat aging | 0.75 | 1.14 | 1.24 |
| Tensile bond strength after freeze-thaw cycling | 0.63 | 1.05 | 1.12 |
| Performance rating | C1 | C1 | C2 |
TABLE 2 Tile grout properties measured on concrete substrates after treatment with the multifunctional Cement mortar of example 1
| Performance (N/mm 2) | Tile adhesive A | Tile glue B | Tile glue C |
| Tensile bond strength | 1.18 | 1.42 | 1.56 |
| Tensile bond strength after immersion in water | 1.13 | 1.36 | 1.38 |
| Tensile bond strength after heat aging | 1.09 | 1.33 | 1.42 |
| Tensile bond strength after freeze-thaw cycles | 1.11 | 1.24 | 1.35 |
| Performance rating | C2 | C2 | C2 |
TABLE 3 Tile adhesive Properties measured on the concrete substrate after the multifunctional Cement mortar treatment of example 2
| Performance (N/mm 2) | Tile glue A | Tile glue B | Tile glue C |
| Tensile bond strength | 1.13 | 1.34 | 1.50 |
| Tensile bond strength after immersion in water | 1.07 | 1.28 | 1.43 |
| Tensile bond strength after heat aging | 1.09 | 1.31 | 1.45 |
| Tensile bond strength after freeze-thaw cycles | 1.05 | 1.26 | 1.39 |
| Performance grade | C2 | C2 | C2 |
TABLE 4 Tile grout properties measured on the concrete substrate after the multifunctional Cement mortar treatment of example 3
| Performance (N/mm 2) | Tile adhesive A | Tile glue B | Tile glue C |
| Tensile bond strength | 1.09 | 1.29 | 1.48 |
| Tensile bond strength after immersion in water | 1.04 | 1.25 | 1.41 |
| Tensile bond strength after heat aging | 0.97 | 1.23 | 1.43 |
| Tensile bond strength after freeze-thaw cycles | 1.03 | 1.18 | 1.38 |
| Performance rating | C1 | C2 | C2 |
As shown in tables 1 to 4, on the concrete substrates treated with the multifunctional cement slurries of examples 1 to 3, the performance of the commercially available tile adhesives of 3 was significantly improved, especially the tensile bond strength after soaking and freeze-thaw cycling was significantly improved, the decrease of the tensile performance after soaking and freeze-thaw cycling was smaller than that of the untreated substrates, and the waterproof and anti-freeze-thaw capabilities were significantly improved, wherein the performance grades of the 3 commercially available tile adhesives on the concrete substrates treated with the multifunctional cement slurries of examples 1 and 2 all reached the C2 grade. It can be seen that the multifunctional cement slurries of examples 1 to 3 can significantly improve the surface properties of the concrete substrate, making it easier for the tile to be stuck.
The multifunctional cement slurry is used for roughening and roughening the concrete wall surface, and has the following specific construction process:
(1) Cleaning a wall surface to be constructed, removing the peeling and loose parts of the wall surface, removing the hollowing parts, troweling by using cement mortar, and finally cleaning floating ash on the wall surface;
(2) Uniformly mixing the first component and the second component in a construction site according to a proportion, and preparing for brushing;
(3) The multifunctional cement slurry is coated on the wall surface by rolling by a roller, the multifunctional cement slurry is coated from top to bottom in an N shape, and the construction amount is 1-1.5 kg/m 2 ；
(4) After the multifunctional cement slurry is coated, the ceramic tiles can be pasted by using the ceramic tile adhesive after the wall surface is completely dried.
The waterproof and anti-permeability effect test of the multifunctional cement slurry of the embodiment 1 to 3 comprises the following steps:
the de-coating mortar permeation pressure (28 d) and the secondary permeation pressure (56 d) of the multifunctional cement slurries of examples 1 to 3 were tested with reference to GB 18445-2012 "cement-based permeable crystalline waterproofing material", and compared with commercially available cement-based permeable crystalline waterproofing coatings, see table 5 below:
TABLE 5 waterproof and anti-permeability performances of the multifunctional cement slurries of examples 1 to 3
From the data of the anti-permeability performance of the multifunctional cement slurry and the commercially available waterproof coatings A and B in the embodiments 1 to 3, the anti-permeability performance of the multifunctional cement slurry in the embodiments 1 to 3 reaches or is superior to that of various commercially available products, and the multifunctional cement slurry can be used for waterproof construction of concrete surfaces.
When the waterproof structure is used for waterproof construction of a bathroom, the wall surface of the bathroom can be comprehensively protected, the bathroom spray water is effectively prevented from permeating, cement mortar does not need to be smeared on the surface of a waterproof layer after construction, tiles can be directly pasted, and the construction period is greatly shortened.
And (3) renovating the old ceramic tile surface:
the multifunctional cement slurry can also be used for renovating the old tile surface, and the old tile does not need to be smashed during construction, the multifunctional cement slurry can be directly coated on the old tile surface in a scraping way, and the construction method is as follows:
(1) Cleaning the surface of the old ceramic tile: removing attachments and dust on the surface of the old ceramic tile, washing with water and drying;
(2) Using a batch knife or a scraper to scrape multifunctional cement slurry on the surface of the ceramic tile, wherein the dosage is 1.5-2.0 kg/mm 2 Drying in the air;
(3) And after the multifunctional cement slurry coated on the surface is completely dried, sticking a new ceramic tile on the surface by using a ceramic tile adhesive.
In the process, after the multifunctional cement slurry is spread, new ceramic tiles are pasted at intervals of more than 4 h.
The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the invention, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (9)
1. A multifunctional cement paste comprising a first component and a second component, the first component comprising by weight: 45-55% of cement, 1-5% of silica fume, 2-8% of mineral powder, 1-4% of sinking beads, 32-45% of sand, 0.1-0.5% of water reducing agent, 0.01-0.2% of starch ether, 0.1-0.5% of cellulose ether and 0.1-0.5% of wood fiber, wherein the second component comprises 8-16% of pure acrylic emulsion, 18-30% of butylbenzene emulsion, 0.1-0.5% of preservative, 0.1-1.0% of defoaming agent and 55-70% of water.
2. The multifunctional cement paste as claimed in claim 1, wherein the weight ratio of the first component to the second component is 1.
3. The multifunctional cement paste as claimed in claim 1, wherein the sand has a particle size of 40-140 mesh, wherein the ratio of 40-70 mesh to 70-140 mesh is 1.
4. The multifunctional cement paste as claimed in claim 1, wherein the water reducing agent is selected from naphthalene based water reducing agents, melamine based water reducing agents or polycarboxylic acid based water reducing agents.
5. The multifunctional cement paste as claimed in claim 1, wherein the cement is lime cement designated by 42.5.
6. The multifunctional cement paste as claimed in claim 3, wherein the water reducing agent comprises a naphthalene water reducing agent and a polycarboxylic acid water reducing agent in a mass ratio of 5.
7. The multifunctional cementitious slurry of claim 1, wherein the first component comprises: 42.5% of cement, 2.5% of silica fume, 5.0% of mineral powder, 2.5% of sinking beads, 40.0% of sand, 0.3% of water reducing agent, 0.05% of starch ether, 0.1% of cellulose ether and 0.2% of wood fiber, wherein the second component comprises 12.41% of pure acrylic emulsion, 24.81% of butylbenzene emulsion, 0.25% of preservative, 0.50% of defoaming agent and 62.03% of water.
8. A method for preparing a multifunctional cement paste according to any one of claims 1 to 7, comprising the steps of:
s1: uniformly mixing cement, silica fume, ore, sinking beads, sand, a water reducing agent, starch ether, cellulose ether and wood fiber in proportion to obtain a first component;
s2: adding the pure acrylic emulsion, the butylbenzene emulsion, the defoaming agent and the preservative into water in proportion and uniformly mixing to obtain a second component.
9. Use of the multifunctional cement paste of any one of claims 1 to 7 for roughening and roughening concrete walls, waterproofing concrete surfaces, and renovating old ceramic tile walls.
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