CN112794686A - Waterproof dry-mixed mortar and production process thereof - Google Patents
Waterproof dry-mixed mortar and production process thereof Download PDFInfo
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- CN112794686A CN112794686A CN202110007065.9A CN202110007065A CN112794686A CN 112794686 A CN112794686 A CN 112794686A CN 202110007065 A CN202110007065 A CN 202110007065A CN 112794686 A CN112794686 A CN 112794686A
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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
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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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/40—Compounds containing silicon, titanium or zirconium or other organo-metallic compounds; Organo-clays; Organo-inorganic complexes
- C04B24/42—Organo-silicon compounds
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/44—Thickening, gelling or viscosity increasing agents
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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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/46—Water-loss or fluid-loss reducers, hygroscopic or hydrophilic agents, water retention agents
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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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/60—Agents for protection against chemical, physical or biological attack
- C04B2103/65—Water proofers or repellants
-
- 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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- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a waterproof dry-mixed mortar and a production process thereof, belonging to the technical field of mortar production, and the waterproof dry-mixed mortar comprises the following powder materials in percentage by weight: 40 to 60 percent of ordinary Portland cement, 30 to 50 percent of mixed sand, 1 to 1.5 percent of redispersible polymer rubber powder, 0.2 to 1.2 percent of organosilicon waterproofing agent, 0 to 0.3 percent of fiber, 0.6 to 1.5 percent of water retention thickener and the balance of additive; and is prepared by the following processes: screening all components of the mixed sand by a screening device, and metering and then mixing according to the proportion; mixing starch ether, cellulose ether and bentonite according to a ratio to obtain a water-retaining thickener; weighing and mixing ordinary portland cement, screened and mixed sand, redispersible polymer rubber powder, an organic silicon waterproof agent, fibers, a water retention thickener and an additive according to a ratio to prepare a dry mixture; dispersing and packaging the dry mixture into a finished product; the invention improves the performances of the mortar in all aspects, can save certain raw material cost, is convenient for construction, has excellent waterproof performance and anti-cracking performance, and has good durability.
Description
Technical Field
The invention relates to the technical field of mortar production, in particular to waterproof dry-mixed mortar and a production process thereof.
Background
China is a major country for cement production and cement consumption. According to incomplete statistics, 70% of cement is used for preparing concrete and 30% is used for producing cement mortar every year. The cement mortar plays roles of bonding, lining and stress transmission in the building engineering. As with conventional concrete, the former cement mortar is formed by mixing cement and sand at a construction site and adding water for stirring. With the development and technical progress of society and the improvement of the market on the product refinement and diversification, the 'ready mixed mortar' produced intensively by professional mortar production plants becomes an effective means for solving the problems, including: wet-mixed mortar and dry-mixed mortar. In 2011, 8, 1, China promulgates and implements national standard 'ready-mixed mortar' (GB/T25181-2010), and a plurality of related problems are specified, so that the production and inspection of the ready-mixed mortar are in the future.
Dry mixing refers to mixing the aggregate after drying and screening treatment, cement and various components determined according to performance in a professional production plant according to a certain proportion, transporting the mixture to a construction site in a bag or in bulk, adding water and mixing the mixture to obtain the material which can be directly used, and has the functions of thin layer adhesion, padding, protection, water prevention, decoration and the like. The existing dry-mixed mortar has high raw material cost, poor construction and easiness, low cohesive force and poor impermeability, is used for wall plastering and waterproof layers of ground and underground engineering, is easy to crack, fall off, leak and the like, and thus is difficult to ensure the engineering quality.
Based on the above, the invention designs the waterproof dry-mixed mortar and the production process thereof, so as to solve the problems.
Disclosure of Invention
The invention aims to provide waterproof dry-mixed mortar and a production process thereof, and aims to solve the problems of high raw material cost, poor construction workability, low bonding force, poor seepage resistance, easiness in cracking, falling and leakage in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the waterproof dry-mixed mortar comprises the following powder materials in percentage by weight:
preferably, the mixed sand comprises yellow sand and modified powder, the yellow sand substitution rate of the modified powder is 30% -35%, the modified powder comprises fly ash and stone powder, and the ratio of the fly ash to the stone powder is 5: 1.
Preferably, the redispersible polymer rubber powder is HPMC-45000, and the organic silicon waterproof agent is composite siloxane formed by copolymerizing polydimethylsiloxane and long-carbon chain alkyl polysiloxane.
Preferably, the water-retaining thickener is formed by mixing starch ether, cellulose ether and bentonite, and the mixing ratio of the starch ether to the cellulose ether to the bentonite is 1:4: 10.
Preferably, the additive comprises 6-9 wt% of an expanding agent and the balance of a water reducing agent.
Preferably, the expanding agent is a calcium sulphoaluminate type concrete expanding agent, and the water reducing agent is FDN-9000.
Preferably, the fibers are polypropylene fibers with the diameter of 3-9 mm.
A process for producing a waterproof dry-mixed mortar comprising any one of the waterproof dry-mixed mortars according to claims 1 to 7, comprising the steps of:
s1: screening all components of the mixed sand by a screening device, and metering and then mixing according to the proportion;
s2: mixing starch ether, cellulose ether and bentonite according to a ratio to obtain a water-retaining thickener;
s3: weighing and mixing common Portland cement, screened and mixed sand, redispersible polymer rubber powder, an organic silicon waterproof agent, fibers, a water retention thickener and an additive according to a ratio to prepare a dry mixture;
s4: and dispersing and packaging the dry mixture into a finished product.
Preferably, the fineness of the yellow sand of the mixed sand is 30-150 meshes, the fly ash is II-grade fly ash, and the fineness of the fly ash is 150-300 meshes.
Preferably, the mixed sand, the water-retention thickening agent, the redispersible polymer rubber powder, the organic silicon waterproof agent, the fiber, the water-retention thickening agent and the additive are dried to remove water, mixed and added into a mixing bin cover to be stirred and mixed.
Compared with the prior art, the invention has the beneficial effects that:
1. the fly ash and the stone powder are added and mixed into the cement in the form of mixed sand, so that the mixing amount and the mixing ratio of the fly ash and the stone powder are easy to control, the flowing property of the mortar is improved through the two substances, the later-stage impermeability of the mortar is improved, the homogenized slurry particles are dispersed, the exertion of the mortar strength and the further development of hydration reaction are facilitated, and the internal structure of the mortar is more densified, so that the water retention property, the strength, the tensile bonding strength and the impermeability of the mortar are improved, and a certain raw material cost can be saved by adopting the fly ash, and the construction is facilitated.
2. According to the invention, the composite siloxane formed by copolymerizing polydimethylsiloxane and long-carbon chain alkyl polysiloxane is used as a waterproof agent, and the fiber, the water-retaining thickener and various additives are added, so that the mortar has good waterproof performance, excellent anti-cracking performance and good durability.
3. According to the invention, various raw materials are screened and then metered, dried, covered with a cover and stirred for mixing, so that the amount of large particles or impurities in the raw materials is reduced, the quality of the raw materials is improved, and the bad production environment caused by the influence of large amount of dispersion on the material ratio in the stirring process is avoided.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent 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 invention provides a technical scheme that:
the waterproof dry-mixed mortar comprises the following powder materials in percentage by weight:
wherein the total amount of the fly ash and the stone powder is 30% -35% of the amount of the yellow sand, and the ratio of the fly ash to the stone powder is 5: 1. The fly ash is added to improve the flowing property of the mortar and the later-stage impermeability of the mortar, the stone powder is added to disperse and homogenize slurry particles, the volatilization of the strength of the mortar and the further development of hydration reaction are facilitated, the internal structure of the mortar is more densified, and the water retention property, the strength, the tensile bonding strength and the impermeability of the mortar are improved, the mixing amount of the fly ash and the stone powder is not too large, and the quality of the mortar is negatively influenced if the mixing amount of the fly ash and the stone powder is too large, so that the mixing amount of the stone powder is controlled and the mixing amount of the fly ash is controlled on the premise that the ratio.
Wherein, the redispersible polymer rubber powder selects HPMC-45000, the organosilicon waterproofing agent is compound siloxane formed by the copolymerization of polydimethylsiloxane and long carbon chain alkyl polysiloxane, has the best monk water effect, and can further reduce the water absorption capacity of the capillary holes of the anti-crack mortar compared with other waterproofing agents. The organosilicon powder water repellent is a hollow spherical structure of a core shell, wherein an organosilicon core material and a powder carrier are wrapped in the organosilicon core material and the powder carrier by a water-soluble film-forming polymer, when the dry-mixed mortar added with the organosilicon powder waterproofing agent is mixed with water, the water-soluble film layer is rapidly swelled and dissolved and releases the coated active organosilicon, under the high alkaline environment after the cement hydration, the hydrophilic organic functional groups in the active organic silicon compounds are hydrolyzed to form silanol groups with high reaction activity, the silanol groups are continuously reacted with hydroxyl groups in the cement hydration products to form chemical combination, so that the silanes connected together by crosslinking are firmly fixed on the surface of the hole wall in the cement mortar, the hydrophobic organic functional groups face to the outer side of the pore wall, so that the surfaces of the pores obtain hydrophobicity, and the integral hydrophobic effect is brought to the mortar.
The water-retaining thickening agent is formed by mixing starch ether, cellulose ether and bentonite, wherein the mixing ratio of the starch ether to the cellulose ether to the bentonite is 1:4: 10. The starch ether, the cellulose ether and the bentonite are matched for use, so that the advantages of the starch ether and the cellulose ether are complementary, the bentonite is modified by a coupling agent and the like to enhance the water retention and thickening performance, the freshly mixed mortar can be thickened, a certain air entraining effect is achieved, the moisture in the thin-layer mortar is kept, the adhesion of the mortar to a trowel is reduced or the construction time is prolonged, the adding amount of the starch ether and the cellulose ether is not too large, and the ratio of 1:4:10 is a preferred ratio.
The fiber is 3-9 mm polypropylene fiber, is randomly and uniformly distributed in the cement matrix and is tightly combined with cement, so that the formation and development of micro cracks are prevented, the mortar matrix is compact, and the mortar has waterproof performance and excellent impact resistance and cracking resistance.
Wherein the expanding agent is calcium sulphoaluminate type concrete expanding agent, and the water reducing agent is FDN-9000.
A process for producing a waterproof dry-mixed mortar comprising any one of the waterproof dry-mixed mortars according to claims 1 to 7, comprising the steps of: s1: screening all components of the mixed sand by a screening device, and metering and then mixing according to the proportion; s2: mixing starch ether, cellulose ether and bentonite according to a proportioning ratio to obtain a water-retaining thickener; s3: weighing and mixing ordinary portland cement, screened and mixed sand, redispersible polymer rubber powder, an organic silicon waterproof agent, fibers, a water retention thickener and an additive according to a ratio to prepare a dry mixture; s4: and dispersing and packaging the dry mixture into a finished product.
The mixed sand is characterized in that the fineness of yellow sand of the mixed sand is 30-150 meshes, the fineness of fly ash is class II fly ash, the fineness of stone powder is 150-300 meshes, the mixed sand, the water-retaining thickening agent, the redispersible polymer rubber powder, the organosilicon waterproofing agent, the fiber, the water-retaining thickening agent and the additive are mixed after being dried and dewatered, and are added into a mixing bin seal cover to be stirred and mixed, so that powder scattering in the mixing process is prevented.
One specific application of this embodiment is:
example 1
The waterproof dry-mixed mortar comprises the following powder materials in percentage by weight:
the mixed sand comprises yellow sand and improved powder, the yellow sand substitution rate of the improved powder is 30% -35%, the improved powder comprises fly ash and stone powder, and the ratio of the fly ash to the stone powder is 5: 1.
The redispersible polymer rubber powder is HPMC-45000, and the organosilicon waterproofing agent is composite siloxane formed by copolymerizing polydimethylsiloxane and long-carbon chain alkyl polysiloxane.
The water-retaining thickener is formed by mixing starch ether, cellulose ether and bentonite, wherein the mixing ratio of the starch ether to the cellulose ether to the bentonite is 1:4: 10.
The additive comprises 6.5 percent of expanding agent and the balance of water reducing agent.
The expanding agent is calcium sulphoaluminate type concrete expanding agent, and the water reducing agent is FDN-9000.
The fiber is 3-9 mm polypropylene fiber.
Example 2
The waterproof dry-mixed mortar comprises the following powder materials in percentage by weight:
the mixed sand comprises yellow sand and improved powder, the yellow sand substitution rate of the improved powder is 30% -35%, the improved powder comprises fly ash and stone powder, and the ratio of the fly ash to the stone powder is 5: 1.
The redispersible polymer rubber powder is HPMC-45000, and the organosilicon waterproofing agent is composite siloxane formed by copolymerizing polydimethylsiloxane and long-carbon chain alkyl polysiloxane.
The water-retaining thickener is formed by mixing starch ether, cellulose ether and bentonite, wherein the mixing ratio of the starch ether to the cellulose ether to the bentonite is 1:4: 10.
The additive comprises an expanding agent and a water reducing agent, wherein the expanding agent accounts for 8% by weight, and the rest is the water reducing agent.
The expanding agent is calcium sulphoaluminate type concrete expanding agent, and the water reducing agent is FDN-9000.
The fiber is 3-9 mm polypropylene fiber.
Example 3
The waterproof dry-mixed mortar comprises the following powder materials in percentage by weight:
the mixed sand comprises yellow sand and improved powder, the yellow sand substitution rate of the improved powder is 30% -35%, the improved powder comprises fly ash and stone powder, and the ratio of the fly ash to the stone powder is 5: 1.
The redispersible polymer rubber powder is HPMC-45000, and the organosilicon waterproofing agent is composite siloxane formed by copolymerizing polydimethylsiloxane and long-carbon chain alkyl polysiloxane.
The water-retaining thickener is formed by mixing starch ether, cellulose ether and bentonite, wherein the mixing ratio of the starch ether to the cellulose ether to the bentonite is 1:4: 10.
The additive comprises an expanding agent and a water reducing agent, wherein the expanding agent accounts for 6% by weight, and the rest is the water reducing agent.
The expanding agent is calcium sulphoaluminate type concrete expanding agent, and the water reducing agent is FDN-9000.
The fiber is 3-9 mm polypropylene fiber.
Comparative example 1
The waterproof dry-mixed mortar comprises the following powder materials in percentage by weight:
the mixed sand comprises yellow sand and improved powder, the yellow sand substitution rate of the improved powder is 30% -35%, the improved powder comprises fly ash and stone powder, and the ratio of the fly ash to the stone powder is 5: 1.
The redispersible polymer rubber powder is HPMC-45000, and the organosilicon waterproofing agent is composite siloxane formed by copolymerizing polydimethylsiloxane and long-carbon chain alkyl polysiloxane.
The water-retaining thickener is formed by mixing starch ether, cellulose ether and bentonite, wherein the mixing ratio of the starch ether to the cellulose ether to the bentonite is 1:4: 10.
The additive comprises 6.5 percent of expanding agent and the balance of water reducing agent.
The expanding agent is calcium sulphoaluminate type concrete expanding agent, and the water reducing agent is FDN-9000.
The fiber is 3-9 mm polypropylene fiber.
Wherein, the examples 1-3 and the comparative example 1 are produced according to the following processes:
a production process of waterproof dry-mixed mortar comprises the following steps: s1: screening all components of the mixed sand by a screening device, and metering and then mixing according to the proportion; s2: mixing starch ether, cellulose ether and bentonite according to a ratio to obtain a water-retaining thickener; s3: weighing and mixing ordinary portland cement, screened and mixed sand, redispersible polymer rubber powder, an organic silicon waterproof agent, fibers, a water retention thickener and an additive according to a ratio to prepare a dry mixture; s4: and (5) dispersing and packaging the dry mixture into a finished product.
Wherein the fineness of the yellow sand of the mixed sand is 30-150 meshes, the fineness of the fly ash is II-grade fly ash, the fineness of the stone powder is 150-300 meshes, and the mixed sand, the water-retaining thickening agent, the redispersible polymer rubber powder, the organosilicon waterproofing agent, the fiber, the water-retaining thickening agent and the additive are all mixed after being dried and dewatered, and are added into a mixing bin seal cover to be stirred and mixed.
Comparative example 2
Dry-mixed mortar produced by a certain building material company of Dongguan city, Guangdong province.
Performance testing
Test example: the dry-mixed mortars prepared by examples 1 to 3 of the present invention are described as test example 1, test example 2 and test example 3 in this order.
The first experiment is that a formed mortar test block is prepared, the formed mortar test block is maintained to be at the temperature of 20 +/-2 ℃ and the relative humidity of more than 95% until the mortar test block is aged, and then the compressive strength, the impermeability strength and the bending strength of the mortar test block aged 7d and 28d are tested according to the specification of JGJ/T70-2009 'basic performance test method for building mortar' standard.
And experiment II, stirring by using a mortar stirrer for at least 3min, forming a cubic compressive strength test piece of mortar by using a test mold with a bottom, and performing standard curing, wherein the consistency, the water retention property and the tensile bonding strength refer to JGJ/T70-2009 building mortar basic performance test method.
| Test example 1 | Test example 2 | Test example 3 | Comparative example 1 | Comparative example 2 | |
| Consistency (mm) | 87 | 82 | 75 | 88 | 86 |
| Water retention (%) | 89.7 | 90.3 | 87.6 | 83.2 | 85.4 |
| Tensile bond Strength (MPa) | 0.23 | 0.25 | 0.22 | 0.18 | 0.20 |
Experiment three, the test piece size is 70mm 20mm, 3 pieces per group.
Alkali resistance: placing in saturated Ca (OH)228d in solution;
cracking resistance: the mixture was placed in an oven at 60 ℃.
As can be seen from the relevant data in the table above, compared with the comparative example, the dry mixed mortar prepared by the invention has excellent performance in multiple aspects and better durability. Therefore, the dry-mixed mortar prepared by the method has wider market prospect and is more suitable for popularization.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Rather, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. The waterproof dry-mixed mortar is characterized in that: comprises the following powder materials in percentage by weight:
the balance of additive.
2. The waterproof dry-mixed mortar and the production process thereof according to claim 1, wherein the waterproof dry-mixed mortar comprises the following components: the mixed sand comprises yellow sand and improved powder, the yellow sand substitution rate of the improved powder is 30% -35%, the improved powder comprises fly ash and stone powder, and the ratio of the fly ash to the stone powder is 5: 1.
3. The waterproof dry-mixed mortar and the production process thereof according to claim 1, wherein the waterproof dry-mixed mortar comprises the following components: the redispersible polymer rubber powder is HPMC-45000, and the organosilicon waterproofing agent is composite siloxane formed by copolymerizing polydimethylsiloxane and long-carbon chain alkyl polysiloxane.
4. The waterproof dry-mixed mortar and the production process thereof according to claim 1, wherein the waterproof dry-mixed mortar comprises the following components: the water-retaining thickener is formed by mixing starch ether, cellulose ether and bentonite, and the mixing ratio of the starch ether to the cellulose ether to the bentonite is 1:4: 10.
5. The waterproof dry-mixed mortar and the production process thereof according to claim 1, wherein the waterproof dry-mixed mortar comprises the following components: the additive comprises 6-9% of an expanding agent and the balance of a water reducing agent.
6. The waterproof dry-mixed mortar and the production process thereof according to claim 6, wherein the waterproof dry-mixed mortar comprises the following components: the expanding agent is calcium sulphoaluminate type concrete expanding agent, and the water reducing agent is FDN-9000.
7. The waterproof dry-mixed mortar and the production process thereof according to claim 1, wherein the waterproof dry-mixed mortar comprises the following components: the fiber is 3-9 mm polypropylene fiber.
8. A process for producing a waterproof dry-mixed mortar comprising any one of the waterproof dry-mixed mortars according to claims 1 to 7, comprising the steps of:
s1: screening all components of the mixed sand by a screening device, and metering and then mixing according to the proportion;
s2: mixing starch ether, cellulose ether and bentonite according to a ratio to obtain a water-retaining thickener;
s3: weighing and mixing ordinary portland cement, screened and mixed sand, redispersible polymer rubber powder, an organic silicon waterproof agent, fibers, a water retention thickener and an additive according to a ratio to prepare a dry mixture;
s4: and dispersing and packaging the dry mixture into a finished product.
9. The waterproof dry-mixed mortar and the production process thereof according to claim 1, wherein the waterproof dry-mixed mortar comprises the following components: in S1, the fineness of the yellow sand of the mixed sand is 30-150 meshes, the fineness of the fly ash is II-grade fly ash, and the fineness of the stone powder is 150-300 meshes.
10. The waterproof dry-mixed mortar and the production process thereof according to claim 1, wherein the waterproof dry-mixed mortar comprises the following components: the mixed sand, the water retention thickener, the redispersible polymer rubber powder, the organic silicon waterproof agent, the fiber, the water retention thickener and the additive are dried to remove water and then mixed, and are added into a mixing bin cover to be stirred and mixed.
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| CN113387640A (en) * | 2021-06-02 | 2021-09-14 | 南昌航空大学 | Integral super-hydrophobic portland cement foam concrete product and preparation method thereof |
| CN114873961A (en) * | 2022-05-23 | 2022-08-09 | 中国十七冶集团有限公司 | Molybdenum tailing dry-mixed mortar and application method thereof |
| CN115650631A (en) * | 2022-10-13 | 2023-01-31 | 北京富瑞勒斯科技开发有限公司 | Concrete waterproof compacting agent and preparation method thereof |
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| CN113387640A (en) * | 2021-06-02 | 2021-09-14 | 南昌航空大学 | Integral super-hydrophobic portland cement foam concrete product and preparation method thereof |
| CN113264742A (en) * | 2021-07-07 | 2021-08-17 | 河南德鑫新型建材有限公司 | Wall anti-cracking dry-mixed mortar and preparation method thereof |
| CN114873961A (en) * | 2022-05-23 | 2022-08-09 | 中国十七冶集团有限公司 | Molybdenum tailing dry-mixed mortar and application method thereof |
| CN114873961B (en) * | 2022-05-23 | 2023-01-17 | 中国十七冶集团有限公司 | Molybdenum tailing dry-mixed mortar and application method thereof |
| CN115650631A (en) * | 2022-10-13 | 2023-01-31 | 北京富瑞勒斯科技开发有限公司 | Concrete waterproof compacting agent and preparation method thereof |
| CN115650631B (en) * | 2022-10-13 | 2023-11-03 | 北京富瑞勒斯科技开发有限公司 | Waterproof compacting agent for concrete and preparation method thereof |
| CN115838262A (en) * | 2022-12-27 | 2023-03-24 | 江苏省苏安能节能建材科技有限公司 | Waterproof dry-mixed mortar and production process thereof |
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