CN112794693A - Internal curing self-leveling mortar - Google Patents
Internal curing self-leveling mortar Download PDFInfo
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- CN112794693A CN112794693A CN202110197436.4A CN202110197436A CN112794693A CN 112794693 A CN112794693 A CN 112794693A CN 202110197436 A CN202110197436 A CN 202110197436A CN 112794693 A CN112794693 A CN 112794693A
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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
- C04B28/065—Calcium aluminosulfate cements, e.g. cements hydrating into ettringite
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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
-
- 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
- C04B40/0046—Premixtures of ingredients characterised by their processing, e.g. sequence of mixing the ingredients when preparing the premixtures
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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
- C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
-
- 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
- C04B2111/60—Flooring materials
- C04B2111/62—Self-levelling compositions
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The internal curing self-leveling mortar is characterized in that: the composite material comprises the following components in parts by mass: 100-150 parts of sulphoaluminate cement, 20-30 parts of alunite powder, 10-15 parts of anhydrite, 10-15 parts of fly ash, 220 parts of quartz sand, 10-12 parts of internal curing agent, 5-9 parts of latex powder, 3-5 parts of flatting agent and 2-3 parts of sodium lignosulfonate, wherein the flatting agent comprises the following components in parts by mass: 100 parts of isobutyl methacrylate, 20-30 parts of alkylphenol polyoxyethylene, 2-5 parts of rosin-based hyperbranched polyester and 2-5 parts of beta-cyclodextrin, the internal curing agent disclosed by the invention can form a plurality of micro water storage tanks in mortar, and when the critical binding force of water in the internal curing agent is smaller than the internal relative humidity difference and capillary negative pressure, the water is released, so that the later hydration of the mortar is improved. The internal curing agent of the invention has a pore structure for thinning after releasing water, thereby effectively reducing the influence of pores on the mortar strength.
Description
Technical Field
The invention relates to an internal curing self-leveling mortar, and belongs to the technical field of self-leveling mortar.
Background
In mortar construction, mortar maintenance is a very important link. The strength of the mortar comes from hydration of cement, and cement hydration can only occur in a capillary filled with water, so that conditions must be created to prevent water from evaporating and losing from the capillary, so that the cement can be fully hydrated to ensure that the strength of the mortar is continuously increased. The self-leveling mortar curing agent is sprayed or brushed on the surface of the self-leveling mortar, and practical application constructors preferably do not need to frequently walk on the surface of the self-leveling mortar to damage the surface leveling of the mortar. The self-leveling mortar needs to be maintained by using the internal curing agent, the fluidity of the mortar is greatly influenced after the internal curing agent is added, the leveling effect of the self-leveling mortar needing better fluidity is poor when the self-leveling mortar is maintained by using an internal curing mode, and the self-leveling mortar capable of balancing internal curing and fluidity needs to be found at present.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to ensure the self-leveling mortar which can balance internal curing and has fluidity.
The internal curing self-leveling mortar is characterized in that: the composite material comprises the following components in parts by mass: 100-150 parts of sulphoaluminate cement, 20-30 parts of alunite powder, 10-15 parts of anhydrite, 10-15 parts of fly ash, 220 parts of quartz sand, 10-12 parts of internal curing agent, 5-9 parts of latex powder, 3-5 parts of flatting agent and 2-3 parts of sodium lignosulfonate, wherein the flatting agent comprises the following components in parts by mass: 100 parts of isobutyl methacrylate, 20-30 parts of alkylphenol polyoxyethylene, 2-5 parts of rosin-based hyperbranched polyester and 2-5 parts of beta-cyclodextrin, wherein the mass ratio of the internal curing agent to the flatting agent is 2-4:1,
the preparation of the internal curing agent comprises the following steps: stirring and mixing chitin and sodium hydroxide solution, wherein the mass ratio of the chitin to the sodium hydroxide solution is 1: 5-6, standing for 10-20 minutes, then adding methacrylic acid with 2-3 times of the mass of the chitin, heating and stirring under the condition of a water bath at 50-60 ℃, then dropwise adding an ammonium persulfate solution with the mass fraction of 1-1.5%, the dropwise adding speed is 5-6 ml/minute, standing for 30-40 minutes for reaction, then adding isobutyl triethoxysilane and methacryloyloxyethyl phosphate, wherein the mass ratio of the chitin to the isobutyl triethoxysilane to the methacryloyloxyethyl phosphate is 1: 0.3:0.05-0.09, draining after fully stirring, and drying at 85-95 ℃ to obtain the internal curing agent.
The preparation method of the internal curing self-leveling mortar comprises the following components in parts by mass: 100-150 parts of sulphoaluminate cement, 20-30 parts of alunite powder, 10-15 parts of anhydrite, 10-15 parts of fly ash, 220 parts of quartz sand, 10-12 parts of internal curing agent, 5-9 parts of latex powder, 3-5 parts of flatting agent and 2-3 parts of sodium lignosulfonate, wherein the flatting agent comprises the following components in parts by mass: 100 parts of isobutyl methacrylate, 20-30 parts of alkylphenol polyoxyethylene, 2-5 parts of rosin-based hyperbranched polyester and 2-5 parts of beta-cyclodextrin, wherein the mass ratio of the internal curing agent to the flatting agent is 2-4:1,
the method comprises the following steps: weighing raw materials, mixing sulphoaluminate cement, alum stone powder, anhydrite, fly ash and quartz sand to obtain a mixture, mixing a leveling agent and an internal curing agent according to a proportion, adding the mixture into the mixture, stirring, adding latex powder and sodium lignosulfonate, mixing to obtain internal curing self-leveling mortar,
the preparation of the internal curing agent comprises the following steps: stirring and mixing chitin and sodium hydroxide solution, wherein the mass ratio of the chitin to the sodium hydroxide solution is 1: 5-6, standing for 10-20 minutes, then adding methacrylic acid with 2-3 times of the mass of the chitin, heating and stirring under the condition of a water bath at 50-60 ℃, then dropwise adding an ammonium persulfate solution with the mass fraction of 1-1.5%, the dropwise adding speed is 5-6 ml/minute, standing for 30-40 minutes for reaction, then adding isobutyl triethoxysilane and methacryloyloxyethyl phosphate, wherein the mass ratio of the chitin to the isobutyl triethoxysilane to the methacryloyloxyethyl phosphate is 1: 0.3:0.05-0.09, draining after fully stirring, and drying at 85-95 ℃ to obtain the internal curing agent.
Preferably, the internal curing self-leveling mortar and the preparation method thereof are characterized in that: when in use, water is added into the internal curing self-leveling mortar, and the mass ratio of the internal curing self-leveling mortar to the water is 100: 15-30.
Preferably, the internal curing self-leveling mortar and the preparation method thereof are characterized in that: the strength grade of the sulphoaluminate cement quick-hardening sulphoaluminate cement is 42.5 grade.
Preferably, the internal curing self-leveling mortar and the preparation method thereof are characterized in that: the fineness modulus of the quartz sand is 1.0-1.2, and the water content is lower than 2.0%.
Preferably, the internal curing self-leveling mortar and the preparation method thereof are characterized in that: the latex powder is vinyl acetate/ethylene binary copolymer rubber powder.
Preferably, the internal curing self-leveling mortar and the preparation method thereof are characterized in that: the specific surface area of the fly ash is 600-800m2/kg
Preferably, the internal curing self-leveling mortar and the preparation method thereof are characterized in that: the particle size of the alunite powder is 300-400 microns.
Preferably, the internal curing self-leveling mortar and the preparation method thereof are characterized in that: the leveling agent comprises the following components in parts by mass: 100 parts of isobutyl methacrylate, 25 parts of alkylphenol polyoxyethylene, 5 parts of rosin-based hyperbranched polyester and 2 parts of beta-cyclodextrin.
Preferably, the internal curing self-leveling mortar and the preparation method thereof are characterized in that: the mass ratio of the chitin to the ammonium persulfate is 100: 5-8.
Preferably, the internal curing self-leveling mortar and the preparation method thereof are characterized in that: the water bath temperature was 60 ℃.
Preferably, the internal curing self-leveling mortar and the preparation method thereof are characterized in that: the mass ratio of the chitin to the isobutyl triethoxysilane to the methacryloyloxyethyl phosphate is 1:0.2:0.05,
the internal curing agent of the invention can form a plurality of micro water storage tanks in the mortar, and when the critical binding force of water in the internal curing agent is smaller than the internal relative humidity difference and capillary negative pressure, the water is released, thereby improving the later hydration of the mortar. The internal curing agent of the invention has a pore structure for thinning after releasing water, thereby effectively reducing the influence of pores on the mortar strength. The leveling agent is compounded by isobutyl methacrylate, alkylphenol polyoxyethylene, rosin-based hyperbranched polyester and beta-cyclodextrin, so that the self-curing mortar has good fluidity and better wettability and leveling property on the surface of a matrix, the defect that the fluidity of the mortar is poor after the self-curing agent is added is overcome well, and the phenomenon that gaps are formed on the surface of the cured mortar is eliminated effectively. The effective adding proportion of the leveling agent and the internal curing agent provided by the invention ensures that the mortar achieves the consideration of internal curing and fluidity, and the two agents simultaneously exert respective maximum effects.
Detailed Description
Example 1
An internal curing self-leveling mortar and a preparation method thereof are characterized in that: the composite material comprises the following components in parts by mass: 120 parts of sulphoaluminate cement, 25 parts of alunite powder, 12 parts of anhydrite, 10 parts of fly ash, 200 parts of quartz sand, 12 parts of internal curing agent, 8 parts of latex powder, 5 parts of flatting agent and 2 parts of sodium lignosulfonate, wherein the flatting agent comprises the following components in parts by mass: 100 parts of isobutyl methacrylate, 25 parts of alkylphenol polyoxyethylene, 4 parts of rosin-based hyperbranched polyester, 2 parts of beta-cyclodextrin,
the method comprises the following steps: weighing raw materials, mixing sulphoaluminate cement, alum stone powder, anhydrite, fly ash and quartz sand to obtain a mixture, mixing a leveling agent and an internal curing agent according to a proportion, adding the mixture into the mixture, stirring, adding latex powder and sodium lignosulfonate, mixing to obtain internal curing self-leveling mortar,
the preparation of the internal curing agent comprises the following steps: stirring and mixing chitin and sodium hydroxide solution, wherein the mass ratio of the chitin to the sodium hydroxide solution is 1: 5, standing for 15 minutes, then adding methacrylic acid with 2 times of the mass of the chitin, heating and stirring under the condition of a water bath at 50 ℃, then dropwise adding an ammonium persulfate solution with the mass fraction of 1.5%, the dropwise adding speed being 6 ml/min, standing for 30 minutes after the dropwise adding is finished, reacting, then adding isobutyl triethoxysilane and methacryloyloxyethyl phosphate, wherein the mass ratio of the chitin to the isobutyl triethoxysilane to the methacryloyloxyethyl phosphate is 1:0.25:0.06, draining after full stirring, and drying at 85 ℃ to obtain the internal curing agent.
Example 2
An internal curing self-leveling mortar and a preparation method thereof are characterized in that: the composite material comprises the following components in parts by mass: 130 parts of sulphoaluminate cement, 24 parts of alunite powder, 14 parts of anhydrite, 12 parts of fly ash, 220 parts of quartz sand, 12 parts of internal curing agent, 5 parts of emulsion powder, 4 parts of flatting agent and 2-3 parts of sodium lignosulfonate, wherein the flatting agent comprises the following components in parts by mass: 100 parts of isobutyl methacrylate, 26 parts of alkylphenol polyoxyethylene, 2-5 parts of rosin-based hyperbranched polyester, 2-5 parts of beta-cyclodextrin,
the method comprises the following steps: weighing raw materials, mixing sulphoaluminate cement, alum stone powder, anhydrite, fly ash and quartz sand to obtain a mixture, mixing a leveling agent and an internal curing agent according to a proportion, adding the mixture into the mixture, stirring, adding latex powder and sodium lignosulfonate, mixing to obtain internal curing self-leveling mortar,
the preparation of the internal curing agent comprises the following steps: stirring and mixing chitin and sodium hydroxide solution, wherein the mass ratio of the chitin to the sodium hydroxide solution is 1: and 6, standing for 20 minutes, adding methacrylic acid with the mass 3 times that of the chitin, heating and stirring in a water bath at 50-60 ℃, dropwise adding an ammonium persulfate solution with the mass fraction of 1%, dropwise adding at the speed of 5 ml/min, standing for 35 minutes after dropwise adding is finished, reacting, then adding isobutyl triethoxysilane and methacryloyloxyethyl phosphate, wherein the mass ratio of the chitin to the isobutyl triethoxysilane to the methacryloyloxyethyl phosphate is 1:0.2: 0.09, draining after full stirring, and drying at 95 ℃ to obtain the internal curing agent.
Example 3
An internal curing self-leveling mortar and a preparation method thereof are characterized in that: the composite material comprises the following components in parts by mass: 100 parts of sulphoaluminate cement, 28 parts of alunite powder, 15 parts of anhydrite, 14 parts of fly ash, 220 parts of quartz sand, 10 parts of internal curing agent, 7 parts of latex powder, 3 parts of flatting agent and 3 parts of sodium lignosulfonate, wherein the flatting agent comprises the following components in parts by mass: 100 parts of isobutyl methacrylate, 26 parts of alkylphenol polyoxyethylene, 4 parts of rosin-based hyperbranched polyester, 3 parts of beta-cyclodextrin,
the method comprises the following steps: weighing raw materials, mixing sulphoaluminate cement, alum stone powder, anhydrite, fly ash and quartz sand to obtain a mixture, mixing a leveling agent and an internal curing agent according to a proportion, adding the mixture into the mixture, stirring, adding latex powder and sodium lignosulfonate, mixing to obtain internal curing self-leveling mortar,
the preparation of the internal curing agent comprises the following steps: stirring and mixing chitin and sodium hydroxide solution, wherein the mass ratio of the chitin to the sodium hydroxide solution is 1: 5.5, standing for 20 minutes, then adding methacrylic acid with the mass 3 times that of the chitin, heating and stirring under the condition of a water bath at 50 ℃, then dropwise adding an ammonium persulfate solution with the mass fraction of 1.2%, wherein the dropwise adding speed is 6 ml/min, standing for 40 minutes to react, then adding isobutyl triethoxysilane and methacryloyloxyethyl phosphate, wherein the mass ratio of the chitin to the isobutyl triethoxysilane to the methacryloyloxyethyl phosphate is 1: 0.3:0.07, draining after fully stirring, and drying at 95 ℃ to obtain the internal curing agent.
Example 4
An internal curing self-leveling mortar and a preparation method thereof are characterized in that: the composite material comprises the following components in parts by mass: 150 parts of sulphoaluminate cement, 20 parts of alunite powder, 15 parts of anhydrite, 10 parts of fly ash, 220 parts of quartz sand, 11 parts of internal curing agent, 9 parts of emulsion powder, 5 parts of flatting agent and 3 parts of sodium lignosulfonate, wherein the flatting agent comprises the following components in parts by mass: 100 parts of isobutyl methacrylate, 28 parts of alkylphenol polyoxyethylene, 5 parts of rosin-based hyperbranched polyester, 2 parts of beta-cyclodextrin,
the method comprises the following steps: weighing raw materials, mixing sulphoaluminate cement, alum stone powder, anhydrite, fly ash and quartz sand to obtain a mixture, mixing a leveling agent and an internal curing agent according to a proportion, adding the mixture into the mixture, stirring, adding latex powder and sodium lignosulfonate, mixing to obtain internal curing self-leveling mortar,
the preparation of the internal curing agent comprises the following steps: stirring and mixing chitin and sodium hydroxide solution, wherein the mass ratio of the chitin to the sodium hydroxide solution is 1: 5, standing for 12 minutes, then adding methacrylic acid with 2.5 times of the mass of the chitin, heating and stirring under the water bath condition of 55 ℃, then dropwise adding an ammonium persulfate solution with the mass fraction of 1.4%, wherein the dropwise adding speed is 5.5 ml/minute, standing for 35 minutes to react, then adding isobutyl triethoxysilane and methacryloyloxyethyl phosphate, wherein the mass ratio of the chitin to the isobutyl triethoxysilane to the methacryloyloxyethyl phosphate is 1:0.24:0.08, draining after fully stirring, and drying at 90 ℃ to obtain the internal curing agent.
Comparative example 1: in the components of the example 1, the internal curing agent is not added, the leveling agent is replaced by a commercially available leveling agent, and the contents of other components are the same;
comparative example 2: in the components of example 2, the internal curing agent of the invention is not added, the leveling agent is replaced by a commercially available leveling agent, and the contents of other components are the same;
measuring the performance result of the mortar:
| initial fluidity | Fluidity at 30min | 1d compressive strength MPa | 28d compressive strength MPa | 1d flexural strength MPa | 28d flexural strength MPa | Shrinkage rate | |
| Example 1 | 280mm | 230mm | 11.4 | 42.7 | 2.56 | 5.84 | 0.08﹪ |
| Example 2 | 275mm | 227mm | 11.8 | 42.7 | 2.12 | 5.25 | 0.08﹪ |
| Example 3 | 273mm | 234mm | 11.2 | 42.7 | 2.36 | 5.63 | 0.07﹪ |
| Example 4 | 275mm | 221mm | 10.4 | 42.7 | 2.47 | 5.73 | 0.06﹪ |
| Comparative example 1 | 223mm | 163mm | 9.1 | 35.1 | 1.69 | 4.12 | 0.13﹪ |
| Comparative example 2 | 216mm | 169mm | 8.3 | 34.2 | 1.72 | 3.96 | 0.11﹪ |
The test results show that the test indexes of the self-curing mortar in the embodiments 1-4 are obviously higher than those of the mortar in the comparative examples 1-2, the self-curing mortar has good fluidity and better wettability and leveling property on the surface of the matrix, the defect that the fluidity of the mortar is poor after the self-curing agent is added is overcome, and the phenomenon that the surface of the cured mortar generates gaps is effectively eliminated. The effective adding proportion of the leveling agent and the internal curing agent provided by the invention ensures that the mortar achieves the consideration of internal curing and fluidity, and the two agents simultaneously exert respective maximum effects.
Having described the embodiments, it is obvious to those skilled in the art that the technology of the present invention can be implemented by modifying or appropriately changing and combining the construction methods described herein without departing from the content, spirit and scope of the present invention. It is expressly intended that all such similar substitutes and modifications apparent to those skilled in the art are deemed to be within the spirit, scope and content of the invention.
Claims (10)
1. The internal curing self-leveling mortar is characterized in that: the composite material comprises the following components in parts by mass: 100-150 parts of sulphoaluminate cement, 20-30 parts of alunite powder, 10-15 parts of anhydrite, 10-15 parts of fly ash, 220 parts of quartz sand, 10-12 parts of internal curing agent, 5-9 parts of latex powder, 3-5 parts of flatting agent and 2-3 parts of sodium lignosulfonate, wherein the flatting agent comprises the following components in parts by mass: 100 parts of isobutyl methacrylate, 20-30 parts of alkylphenol polyoxyethylene, 2-5 parts of rosin-based hyperbranched polyester, 2-5 parts of beta-cyclodextrin,
the preparation of the internal curing agent comprises the following steps: stirring and mixing chitin and sodium hydroxide solution, wherein the mass ratio of the chitin to the sodium hydroxide solution is 1: 5-6, standing for 10-20 minutes, then adding methacrylic acid with 2-3 times of the mass of the chitin, heating and stirring under the condition of a water bath at 50-60 ℃, then dropwise adding an ammonium persulfate solution with the mass fraction of 1-1.5%, the dropwise adding speed is 5-6 ml/minute, after the dropwise adding is finished, standing for 30-40 minutes for reaction, then adding isobutyl triethoxysilane and methacryloyloxyethyl phosphate, the mass ratio of the chitin to the isobutyl triethoxysilane to the methacryloyloxyethyl phosphate is 1:0.2-0.3:0.05-0.09, after fully stirring, controlling the water content to be dry, drying at 85-95 ℃ to obtain the internal curing agent, and then, after fully stirring, drying the internal curing agent, adding the mixture of the chitosan and the methacryloyloxyethyl phosphate, and finally, drying the internal curing agent,
the mass ratio of the internal curing agent to the flatting agent is 2-4: 1.
2. The internal curing self-leveling mortar of claim 1, wherein: the strength grade of the sulphoaluminate cement quick-hardening sulphoaluminate cement is 42.5 grade.
3. The internal curing mortar of claim 1, wherein: the fineness modulus of the quartz sand is 1.0-1.2, and the water content is lower than 2.0%.
4. The internal curing self-leveling mortar of claim 1, wherein: the latex powder is vinyl acetate/ethylene binary copolymer rubber powder.
5. The internal curing self-leveling mortar of claim 1, wherein: the specific surface area of the fly ash is 600-800m2/kg。
6. The internal curing self-leveling mortar of claim 1, wherein: the particle size of the alunite powder is 300-400 microns.
7. The internal curing self-leveling mortar of claim 1, wherein: the leveling agent comprises the following components in parts by mass: 100 parts of isobutyl methacrylate, 25 parts of alkylphenol polyoxyethylene, 5 parts of rosin-based hyperbranched polyester and 2 parts of beta-cyclodextrin.
8. The internal curing self-leveling mortar of claim 1, wherein: the mass ratio of the chitin to the ammonium persulfate is 100: 5-8.
9. The internal curing self-leveling mortar of claim 1, wherein: the water bath temperature was 60 ℃.
10. The internal curing self-leveling mortar of claim 1, wherein: the mass ratio of the chitin to the isobutyl triethoxysilane to the methacryloyloxyethyl phosphate is 1:0.2: 0.05.
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| CN115057667A (en) * | 2022-06-10 | 2022-09-16 | 厦门海投建材有限公司 | Self-compacting concrete and production process thereof |
| CN116396015A (en) * | 2022-12-02 | 2023-07-07 | 佛山市顺德区和乐商品混凝土有限公司 | Anti-cracking concrete and preparation method thereof |
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| 何锐等: "以高吸水性树脂为混凝土内养护剂的研究进展", 《中国科技论文》 * |
| 张攀: "新型混凝土内养护剂的应用研究", 《新型建筑材料》 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114988799A (en) * | 2022-05-30 | 2022-09-02 | 唐山北极熊建材有限公司 | High-water-content high-strength cement-based self-leveling mortar and application thereof |
| CN115057667A (en) * | 2022-06-10 | 2022-09-16 | 厦门海投建材有限公司 | Self-compacting concrete and production process thereof |
| CN115057667B (en) * | 2022-06-10 | 2023-01-10 | 厦门海投建材有限公司 | A kind of self-compacting concrete and its production process |
| CN116396015A (en) * | 2022-12-02 | 2023-07-07 | 佛山市顺德区和乐商品混凝土有限公司 | Anti-cracking concrete and preparation method thereof |
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