CN114436589B - Mortar composition and preparation method thereof - Google Patents

Mortar composition and preparation method thereof Download PDF

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Publication number
CN114436589B
CN114436589B CN202210082127.7A CN202210082127A CN114436589B CN 114436589 B CN114436589 B CN 114436589B CN 202210082127 A CN202210082127 A CN 202210082127A CN 114436589 B CN114436589 B CN 114436589B
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parts
cement
mortar composition
cellulose ether
mortar
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CN114436589A (en
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王宏斌
赵伦
赵明慧
范敦城
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Wuhu Dongfang Rainbow Building Materials Co ltd
Dongfang Yuhong Sand Powder Technology Group Co ltd
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Wuhu Dongfang Rainbow Building Materials Co ltd
Dongfang Yuhong Sand Powder Technology Group Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/04—Portland cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/042—Magnesium silicates, e.g. talc, sepiolite
    • 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
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/14—Minerals of vulcanic origin
    • C04B14/18—Perlite
    • 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
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/20—Mica; Vermiculite
    • C04B14/204—Mica; Vermiculite expanded
    • 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
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/22—Glass ; Devitrified glass
    • 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
    • C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B16/04—Macromolecular compounds
    • C—CHEMISTRY; METALLURGY
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    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/02—Agglomerated materials, e.g. artificial aggregates
    • C04B18/023—Fired or melted materials
    • C—CHEMISTRY; METALLURGY
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    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
    • C04B18/067—Slags
    • 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
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/18—Waste materials; Refuse organic
    • C04B18/24—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
    • C04B18/26—Wood, e.g. sawdust, wood shavings
    • C04B18/265—Wood, e.g. sawdust, wood shavings from specific species, e.g. birch
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
    • C04B22/08—Acids or salts thereof
    • C04B22/16—Acids or salts thereof containing phosphorus in the anion, e.g. phosphates
    • 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
    • C04B24/24—Macromolecular compounds
    • C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
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    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/24—Macromolecular compounds
    • C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B24/2652—Nitrogen containing polymers, e.g. polyacrylamides, polyacrylonitriles
    • C—CHEMISTRY; METALLURGY
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    • 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
    • C04B24/24—Macromolecular compounds
    • C04B24/28—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B24/32—Polyethers, e.g. alkylphenol polyglycolether
    • 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
    • C04B24/24—Macromolecular compounds
    • C04B24/38—Polysaccharides or derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • 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
    • C04B28/021—Ash cements, e.g. fly ash cements ; Cements based on incineration residues, e.g. alkali-activated slags from waste incineration ; Kiln dust cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • 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
    • 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
    • C04B28/30—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 magnesium cements or similar cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • 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
    • 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 mortar composition and a preparation method thereof, wherein the mortar composition comprises the following components: the concrete comprises a main supporting material, an auxiliary supporting material, cement, an active additive, rubber powder, cellulose ether, a suspending agent, a curing agent, a catalyst and an early strength agent. According to the invention, the auxiliary supporting material is introduced to reduce the shrinkage stress of the mortar, reduce the cracking index of the mortar and prevent the mortar from hollowing and cracking.

Description

Mortar composition and preparation method thereof
Technical Field
The invention belongs to the technical field of ceramic tile adhesives, and particularly relates to a mortar composition and a preparation method thereof.
Background
At present, the mortar is mainly formed by mixing river sand, cement, rubber powder, cellulose ether and the like, is rigid after curing, and is difficult to resist the self-adhesion force of the mortar in the curing process so as to cause cracking, falling and easy hollowing of tile adhesive paving; meanwhile, the mortar is laborious to plaster in batches in the process of plastering and bonding the tile adhesive, is not light, and is easy to bring construction injury to constructors. The prior method for solving the shrinkage problem of the mortar mainly comprises the following steps: firstly, the cement tragic amount is reduced, and the shrinkage rate of mortar is reduced; secondly, the shrinkage rate is reduced by utilizing the matching force of the particle size grade of river sand; thirdly, the method of introducing the expanding agent is used for reducing the shrinkage rate of the mortar. Thereby preventing the problems of cracking, hollowing, falling off and the like of the mortar. For example, some existing low shrinkage mortars use a method of reducing the water consumption by combining sulphoaluminate cement with silicate cement and introducing a water reducing agent to reduce the shrinkage of the mortar. Still other tile adhesives comprise cement, modified plant starch, L-lactic acid oligomer, hydroxyl-terminated poly-L-lactic acid, calcium phosphate, light calcium carbonate, vegetable oil, zinc oxide, an anti-hydrolysis agent, cellulose ether and a thixotropic lubricant; the adhesive can greatly improve the adhesive force between the tile stone and the wall surface due to the preparation of the mixture, has strong permeability, can quickly permeate various materials and be solidified into a firm bonding layer, has good flexibility, and can prevent the cement or the tile adhesive from shrinking to cause hollowness and falling off, namely the tile adhesive reduces the shrinkage of mortar mainly by improving the flexibility of the mortar. The existing method also discloses that the low-shrinkage anti-cracking mortar is prepared by using the reinforced recycled aggregate and the waste liquid of the treatment byproducts, so that the damage risk of the mortar caused by shrinkage cracking is reduced. For example, bentonite is used to compensate for shrinkage mortar, which is obtained by mixing cement, sand, bentonite, water, pumping agent and polypropylene fiber. For example, the shrinkage of mortar is reduced by introducing nano calcium carbonate and an expanding agent.
In summary, although some methods for solving the shrinkage problem of mortar are disclosed in the prior art, how to solve the shrinkage problem of mortar, and further cause cracking of mortar and easy hollowing of tile adhesive paving, and the method is still a research hot spot in the field of mortar.
Disclosure of Invention
The invention aims to provide a mortar composition, which is mainly used for balancing the curing shrinkage stress of mortar by introducing auxiliary supporting materials, preventing the mortar from cracking and hollowing of ceramic tiles, and promoting the active additive and the curing agent to carry out ceramic reaction by a catalyst so as to improve the strength of the mortar.
In order to achieve the above object, an aspect of the present invention provides a mortar composition comprising: the concrete comprises a main supporting material, an auxiliary supporting material, cement, an active additive, rubber powder, cellulose ether, a suspending agent, a curing agent, a catalyst and an early strength agent.
According to the present invention, preferably, the mortar composition comprises, in parts by mass: 300-750 parts of main supporting materials, 30-250 parts of auxiliary supporting materials, 200-450 parts of cement, 10-50 parts of active additives, 3-30 parts of rubber powder, 1-3 parts of cellulose ether, 0.5-2 parts of suspending agents, 1-5 parts of curing agents, 1-3 parts of catalysts and 3-7 parts of early strength agents.
According to the present invention, preferably, the auxiliary supporting material is an auxiliary supporting material having a porous structure, and the auxiliary supporting material having a porous structure is preferably at least one of expanded vermiculite, sepiolite particles, walnut shell particles, hollow glass sand, rubber particles, corn flour particles, slag, artificial lightweight aggregate, perlite, and ceramsite.
According to the invention, the auxiliary supporting material is an auxiliary supporting material with a porous structure, so that the shrinkage stress of the mortar can be buffered in the shrinkage process of the mortar, and the cracking of the mortar is prevented.
In the present invention, the particle size of the auxiliary supporting material is preferably 40-200 mesh, and the bulk density is preferably 400-1300kg/m 3 。
According to the present invention, preferably, the suspending agent is at least one of polyacrylamide, polyvinylpyrrolidone, polyethylene oxide, polymaleic anhydride, hydrolyzed polymaleic anhydride, xanthan gum, and guar gum.
In the invention, when the mortar composition is constructed, after the suspending agent is dispersed in water, the viscosity of the water is improved, so that the mortar composition forms uniform and stable suspension in the water, namely, the main supporting material is uniformly distributed in the suspension, and other mortar compositions such as the auxiliary supporting material, cement and the like are uniformly distributed around the main supporting material, so that a stable and uniform mortar body is formed.
According to the present invention, preferably, the curing agent is at least one of silicon phosphate, silicon biphosphate, silicon tripolyphosphate, and silicon aluminum phosphate.
According to the present invention, preferably, the catalyst is at least one of aluminum phosphate dibasic, magnesium phosphate dibasic, polyvinyl alcohol modified aluminum phosphate monobasic, borax modified aluminum phosphate monobasic, and magnesium oxide modified aluminum phosphate monobasic.
In the invention, when the mortar composition is applied to construction, the active additive in the components and the curing agent can be subjected to ceramic reaction under the action of the catalyst, so that the strength of the mortar is improved.
According to the present invention, preferably, the main supporting material is at least one of machine-made sand, river sand, and tailing sand;
the cement is at least one of silicate cement, sulphoaluminate cement, magnesite cement, low-carbon cement, volcanic rock cement and fly ash cement.
According to the invention, preferably, the rubber powder is at least one of dispersible latex powder, resin rubber powder and natural rubber powder;
the cellulose ether is at least one of methyl cellulose ether, ethyl cellulose ether, hydroxyethyl cellulose ether, hydroxypropyl cellulose ether and carboxymethyl cellulose ether.
According to the present invention, preferably, the reactive additive is at least one of blast furnace slag, fly ash, foundry dust, and silica fume;
the early strength agent is calcium formate.
Another aspect of the present invention provides a method for preparing the above mortar composition, comprising: and uniformly mixing the main supporting material, the auxiliary supporting material, cement, an active additive, rubber powder, cellulose ether, a suspending agent, a curing agent, a catalyst and an early strength agent to obtain the mortar composition.
The technical scheme of the invention has the following beneficial effects:
(1) According to the invention, the auxiliary supporting material is introduced to reduce the shrinkage stress of the mortar, reduce the cracking index of the mortar and prevent the mortar from hollowing and cracking.
(2) When the mortar composition is applied to construction, the active additive in the components and the curing agent can be subjected to ceramic reaction under the action of the catalyst, so that the strength of the mortar is improved.
(3) The suspension agent is introduced, so that a stable mortar body is formed in water when the mortar composition is applied to construction, and segregation and bleeding are avoided.
(4) The mortar composition has good operation time, high airing adhesive strength, smooth construction and no labor consumption during batch coating.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the preferred embodiments of the present invention are described below, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The invention is further illustrated by the following examples:
the walnut shell particles used in the following examples and comparative examples were selected from Jiutoi refractory Co., ltd, slag from Hunan Henkel trade Co., ltd, expanded vermiculite from Peng-Jian mineral processing plant, particle size ranges of 40-200 mesh, bulk density of 400-1300kg/m 3 ；
The rubber powder is dispersible emulsion powder which is selected from 5010N of Wake chemical (China) company, DAP11 of Dalian chemical industry Co., ltd; the cellulose ether is hydroxypropyl cellulose ether, and is selected from MHG12 or GMC3510 of Shanghai Hui An fine chemical Co., ltd, HD20s of Shandong Heda Co., ltd;
polyacrylamide was purchased from feijia chemical industry limited liability company in texas;
silicon phosphate, silicon tripolyphosphate, and silicon biphosphate are all available from the bio-technology company, inc., of Wuhan; silicon aluminum phosphate is purchased from the company of the chemical industry of optimization, inc.;
aluminum dihydrogen phosphate, polyvinyl alcohol modified aluminum dihydrogen phosphate and borax modified aluminum dihydrogen phosphate are all purchased from Jinan Dewang chemical Co.
The amounts used in the following examples and comparative examples are parts by mass.
Example 1
320 parts of PO42.5 ordinary Portland cement, 432 parts of 40-70 mesh dolomite machine-made sand, 180 parts of 40-200 mesh walnut shell particles (Jiutai refractory material), 7.5 parts of rubber powder (DAP 11), 2.5 parts of cellulose ether (Hui An MHG 12), 50 parts of 200 mesh fly ash, 1 part of polyacrylamide (Fukai chemical industry), 3 parts of calcium formate, 3 parts of silicon phosphate (Harongshan organism) and 1 part of aluminum hydrogen phosphate (Dewang chemical industry), and uniformly mixing and discharging to obtain the mortar composition.
Example 2
200 parts of PO42.5 ordinary Portland cement, 742 parts of dolomite machine-made sand, 30 parts of slag (Hunan He energy), 7.5 parts of rubber powder (DAP 11), 2.5 parts of cellulose ether (Hui An GMC 3510), 10 parts of fly ash, 1 part of polyacrylamide (FuKai chemical industry), 3 parts of calcium formate, 3 parts of silicon aluminum phosphate (Harongshen organism) and 1 part of polyvinyl alcohol modified aluminum dihydrogen phosphate (Dewang chemical industry) are uniformly mixed and discharged to obtain the mortar composition.
Example 3
The mortar composition is prepared by uniformly mixing 300 parts of PO42.5 ordinary Portland cement, 600 parts of 40-70 mesh dolomite machine-made sand, 52 parts of 40-200 mesh slag (Hunan He Chemicals), 7.5 parts of rubber powder (Wake chemical 5010N), 3 parts of cellulose ether (Hui An MHG 12), 30 parts of 200 mesh fly ash, 0.5 part of polyacrylamide (FuKai chemical industry), 3 parts of calcium formate, 3 parts of silicon tripolyphosphate (Rong organism) and 1 part of polyvinyl alcohol modified aluminum dihydrogen phosphate (Dewang chemical industry), and discharging.
Example 4
The mortar composition is prepared by uniformly mixing 350 parts of PO42.5 ordinary Portland cement, 430 parts of 40-70 mesh river sand, 152 parts of 40-200 mesh expanded vermiculite (Pengshen mineral product), 5 parts of rubber powder (Wake chemical 5010N), 1 part of cellulose ether (Heda HD20 s), 50 parts of silica fume, 1 part of polyacrylamide (Fukei chemical), 3 parts of calcium formate, 5 parts of silicon dimer phosphate (Hao Rong organism) and 3 parts of aluminum hydrogen phosphate (Dewang chemical), and discharging.
Example 5
450 parts of PO42.5 ordinary Portland cement, 330 parts of 40-70 mesh river sand, 152 parts of 40-200 mesh expanded vermiculite (Pengshen mineral product), 5 parts of rubber powder (Wake chemical 5010N), 1 part of cellulose ether (Heda HD20 s), 50 parts of silica fume, 1 part of polyacrylamide (Fukei chemical), 3 parts of calcium formate, 5 parts of silicon biphosphate (Hao Rong organism) and 3 parts of aluminum hydrogen phosphate (Dewang chemical) are uniformly mixed and discharged to obtain the mortar composition.
Example 6
300 parts of sulphoaluminate cement, 300 parts of 40-70 mesh basalt machine-made sand 380g, 250 parts of 40-200 mesh walnut shell particles (Jiutou refractory material), 7.5 parts of rubber powder (DAP 11), 3 parts of cellulose ether (Hui An GMC 3510), 50 parts of blast furnace slag, 0.5 part of polyacrylamide (Fukai chemical industry), 3 parts of calcium formate, 3 parts of silicon phosphate (Harongshan organism) and 3 parts of borax modified aluminum dihydrogen phosphate (Dewang chemical industry), and uniformly mixing and discharging to obtain the mortar composition.
Comparative example 1
Mixing 350 parts of PO42.5 ordinary Portland cement, 445 parts of 40-70 mesh river sand, 192 parts of 70-140 mesh river sand, 7 parts of rubber powder (DAP 11, dalian chemical), 3 parts of cellulose ether (Hui An MHG 12) and 3 parts of calcium formate uniformly, and discharging.
Comparative example 2
The mortar composition is prepared by uniformly mixing 350 parts of PO42.5 common Portland cement, 582 parts of 40-70 mesh river sand, 5 parts of rubber powder (Wake chemical 5010N), 1 part of cellulose ether (Herda HD20 s), 50 parts of silica fume, 1 part of polyacrylamide (FuKai chemical industry), 3 parts of calcium formate, 5 parts of silicon biphosphate (Harongshen organism) and 3 parts of aluminum hydrogen phosphate (Dewang chemical industry), and discharging.
Comparative example 3
The mortar composition is prepared by uniformly mixing 350 parts of PO42.5 ordinary Portland cement, 431 parts of 40-70 mesh river sand, 152 parts of 40-200 mesh expanded vermiculite (Pengshan mineral product), 5 parts of rubber powder (Wake chemical 5010N), 1 part of cellulose ether (Heda HD20 s), 50 parts of silica fume, 3 parts of calcium formate, 5 parts of dimeric silicon phosphate (Harongshen organism) and 3 parts of aluminum hydrogen phosphate (Dewang chemical industry), and discharging.
Comparative example 4
The mortar composition is prepared by uniformly mixing 350 parts of PO42.5 ordinary Portland cement, 433 parts of 40-70 mesh river sand, 152 parts of 40-200 mesh expanded vermiculite (Pengshi mineral product), 5 parts of rubber powder (Wake chemical 5010N), 1 part of cellulose ether (Heda HD20 s), 50 parts of silica fume, 1 part of polyacrylamide (Fukei chemical), 3 parts of calcium formate and 5 parts of silicon biphosphate (Hao Rong organism), and discharging.
Test case
The cracking index is tested according to GB/T29417-2012 "cement mortar and concrete drying shrinkage cracking Performance test method", the layering degree is tested according to JGJ/T70-2009 "building mortar basic Performance test method", and other test items are tested according to JC/T547-2017 "ceramic tile adhesive" standard, and specific test results are shown in the following table.
TABLE 1
Figure BDA0003486313800000081
The foregoing description of embodiments of the invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described.

Claims (8)

1. A mortar composition, characterized in that it comprises, in parts by mass: 300-750 parts of main supporting materials, 30-250 parts of auxiliary supporting materials, 200-450 parts of cement, 10-50 parts of active additives, 3-30 parts of rubber powder, 1-3 parts of cellulose ether, 0.5-2 parts of suspending agents, 1-5 parts of curing agents, 1-3 parts of catalysts and 3-7 parts of early strength agents;
wherein the curing agent is at least one of silicon phosphate, silicon biphosphate, silicon tripolyphosphate and silicon aluminum phosphate;
the catalyst is at least one of polyvinyl alcohol modified aluminum dihydrogen phosphate, borax modified aluminum dihydrogen phosphate and magnesium oxide modified aluminum dihydrogen phosphate;
the active additive is at least one of blast furnace slag, fly ash, casting dust and silica fume.
2. A mortar composition according to claim 1, wherein the auxiliary support material is an auxiliary support material having a porous structure.
3. The mortar composition of claim 2, wherein the auxiliary supporting material having a porous structure is at least one of expanded vermiculite, sepiolite particles, walnut shell particles, hollow glass sand, rubber particles, corn flour particles, slag, artificial lightweight aggregate, perlite, and ceramsite.
4. The mortar composition of claim 1, wherein the suspending agent is at least one of polyacrylamide, polyvinylpyrrolidone, polyethylene oxide, polymaleic anhydride, hydrolyzed polymaleic anhydride, xanthan gum, and guar gum.
5. The mortar composition of claim 1, wherein the primary support material is at least one of machine-made sand, river sand, and tailings sand;
the cement is at least one of silicate cement, sulphoaluminate cement, magnesite cement, low-carbon cement, volcanic rock cement and fly ash cement.
6. The mortar composition of claim 1, wherein the rubber powder is at least one of a dispersible latex powder, a resin rubber powder, and a natural rubber powder;
the cellulose ether is at least one of methyl cellulose ether, ethyl cellulose ether, hydroxyethyl cellulose ether, hydroxypropyl cellulose ether and carboxymethyl cellulose ether.
7. The mortar composition of claim 1, wherein the early strength agent is calcium formate.
8. A method for preparing a mortar composition according to any of claims 1-7, characterized in that it comprises: and uniformly mixing the main supporting material, the auxiliary supporting material, cement, an active additive, rubber powder, cellulose ether, a suspending agent, a curing agent, a catalyst and an early strength agent to obtain the mortar composition.
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