CN108929089B - Manufacturing method of self-leveling mortar terrace for power distribution room - Google Patents

Manufacturing method of self-leveling mortar terrace for power distribution room Download PDF

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CN108929089B
CN108929089B CN201811110184.1A CN201811110184A CN108929089B CN 108929089 B CN108929089 B CN 108929089B CN 201811110184 A CN201811110184 A CN 201811110184A CN 108929089 B CN108929089 B CN 108929089B
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self
leveling mortar
agent
leveling
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CN108929089A (en
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韩雷
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Shaanxi Yindun Construction Technology Co.,Ltd.
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Dongyang Yan'an Construction Engineering 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
    • 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
    • C04B24/2682—Halogen containing polymers, e.g. PVC
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/5025—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with ceramic materials
    • C04B41/5042—Zirconium oxides or zirconates; Hafnium oxides or hafnates
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
    • C04B41/61—Coating or impregnation
    • C04B41/65—Coating or impregnation with inorganic materials
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/10—Esters
    • C08F220/22—Esters containing halogen
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/63—Additives non-macromolecular organic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/65—Additives macromolecular
    • 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
    • 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
    • C04B2111/90—Electrical properties
    • C04B2111/92—Electrically insulating materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

Abstract

A manufacturing method of a self-leveling mortar terrace for a power distribution room comprises the following steps: firstly, 14 parts of Portland cement, 3 parts of silica fume, 1 part of bentonite, 11 parts of quartz sand, 1.5 parts of redispersible latex powder, 2.5 parts of flatting agent, 0.5 part of water reducing agent, 0.25 part of defoaming agent, 0.2 part of starch ether, 0.1 part of sodium citrate and 9 parts of water are weighed, the Portland cement, the silica fume and the bentonite which are raw materials in parts by mass are added into a stirrer, the surface drying time is 1 hour, the actual drying time is 18 hours, and the service life of the self-leveling mortar terrace can be prolonged by coating an insulating protective layer. The self-leveling mortar terrace can be used for indoor floors of power distribution rooms and power equipment.

Description

Manufacturing method of self-leveling mortar terrace for power distribution room
Technical Field
The invention relates to a manufacturing method of a self-leveling mortar terrace for a power distribution room, and belongs to the technical field of terrace construction.
Background
The cement floor and concrete floor are traditional floors widely used in building floors in China, and are distinguished by bright surface, durability and wear resistance. However, the construction process is mainly manually operated, the quality of the floor is greatly influenced by human factors, and common quality problems such as uneven surface, hollowing, cracks, sanding and the like which are difficult to overcome cover the advantages of the floor and limit the use of the floor in large quantity. And the mortar is required to have good fluidity, higher solidification speed and higher strength.
Disclosure of Invention
The preparation method aims to overcome the defects of the existing terrace material in flowability, solidification speed, mechanical strength and insulativity.
The invention provides a manufacturing method of a self-leveling mortar terrace, wherein the self-leveling mortar terrace comprises a self-leveling mortar layer added with a leveling agent and an insulating protective layer thereon, and the manufacturing method comprises the following steps: (1) preparing a leveling agent: placing dodecafluoroheptyl methacrylate, perfluoroalkyl ethyl acrylate and propylene glycol methyl ether acetate into a container, adding a solvent, and stirring, wherein the dodecafluoroheptyl methacrylate, perfluoroalkyl ethyl acrylate, propylene glycol methyl ether acetate and the solvent are mixed according to a molar ratio of 1: 1-1.5: 1.5-2: 200-250, after uniformly mixing, dropwise adding azodiisobutyronitrile into the mixed solution, then carrying out vacuum degassing, and setting the reaction temperature at 60-65 ℃ under the protection of nitrogen; reacting for 30-50 minutes, then cooling to normal temperature, standing for 1 hour to obtain the final leveling agent, (2) preparing a self-leveling mortar layer: firstly, weighing 10-15 parts of Portland cement, 2-3 parts of silica fume, 1-2 parts of bentonite, 10-12 parts of quartz sand, 1-2 parts of redispersible latex powder, 2-3 parts of flatting agent, 0.1-0.5 part of water reducing agent, 0.2-0.3 part of defoaming agent, 0.1-0.2 part of starch ether, 0.1-0.2 part of sodium citrate and 7-10 parts of water, adding the raw materials of Portland cement, silica fume and bentonite in parts by mass into a stirrer, stirring for 2min, then adding the flatting agent and the water, stirring for 4-8min, then adding the quartz sand and the redispersible latex powder, stirring uniformly, finally adding the water reducing agent, the defoaming agent, the starch ether and the sodium citrate, uniformly mixing to obtain the self-leveling mortar, and uniformly pouring the self-leveling mortar on a base layer to enable the mortar to be self-leveling; after the self-leveling mortar is cured; curing the mixture for 3 to 5 days at the curing temperature of between 20 and 30 ℃; obtaining a self-leveling mortar layer; (3) coating to form an insulating protective layer: coating an insulating protective layer on the surface of the self-leveling mortar layer, and uniformly coating; airing at normal temperature for 12 hours; and obtaining the self-leveling mortar terrace.
According to the manufacturing method of the self-leveling mortar terrace, the portland cement is 425 portland cement.
According to the manufacturing method of the self-leveling mortar terrace, the average particle size of silica fume is 0.1-0.2 microns, and the content of silicon dioxide is more than 80%.
The manufacturing method of the self-leveling mortar terrace comprises the following steps of: firstly, preparing raw materials of 100-150 parts of acrylic emulsion, 80-90 parts of epoxy resin, 20-30 parts of isocyanate, 50-60 parts of barite powder, 10-20 parts of graphite, 10-20 parts of zirconia powder, 5-8 parts of dipropylene glycol butyl ether, 5-6 parts of fatty alcohol-polyoxyethylene ether, 1-5 parts of wetting agent, 3-4 parts of defoaming agent, 3-4 parts of curing agent and 350 parts of solvent 300; putting the acrylic emulsion, the epoxy resin and the isocyanate into a mixing vessel, stirring uniformly, adding the solvent, stirring for 5-10min, adding the barite powder, the graphite and the zirconium oxide powder, and continuing stirring; then adding the dipropylene glycol butyl ether, the fatty alcohol-polyoxyethylene ether, the wetting agent, the defoaming agent and the curing agent, and uniformly stirring.
The manufacturing method of the self-leveling mortar terrace comprises 110 parts of acrylic emulsion, 83 parts of epoxy resin, 27 parts of isocyanate, 58 parts of barite powder, 15 parts of graphite, 16 parts of zirconia powder, 7 parts of dipropylene glycol butyl ether, 5 parts of fatty alcohol-polyoxyethylene ether, 4 parts of wetting agent, 4 parts of defoaming agent, 3 parts of curing agent and 340 parts of solvent.
According to the manufacturing method of the self-leveling mortar terrace, the molar ratio of propylene glycol methyl ether acetate to azodiisobutyronitrile is 6: 1.5.
According to the manufacturing method of the self-leveling mortar terrace, the maintenance temperature is controlled at 20 ℃, and the maintenance is carried out for 5 days.
The invention has the beneficial effects that: the self-leveling mortar has the advantages of simple construction, convenience and rapidness. Good mechanical properties (compressive strength (1 d 9.0-10.5 MPa) (7 d 20.2-23.4 MPa) (28 d 34.5-36.4 MPa), breaking strength (1 d 3.1-3.5 MPa) (7 d 3.7-4.0 MPa) (28 d 4.3-4.9 MPa), elastic modulus 28d 38.2-39.6 GPa), excellent initial fluidity 180-. Good cohesiveness, flatness, no hollowness and shrinkage of 0.02-0.04. The adhesive has no toxic or harmful effect, and is convenient to cure, strong in adhesive force, low in contractibility, good in mechanical property, good in insulating property and stable in chemical property. Therefore, the self-leveling mortar terrace is not easy to age, the surface drying time is 1 hour, the actual drying time is 18 hours, and the service life of the self-leveling mortar terrace can be prolonged by coating the insulating protective layer. The self-leveling mortar terrace can be used for indoor floors of power distribution rooms and power equipment.
Detailed Description
Example 1
A manufacturing method of a self-leveling mortar terrace for a power distribution room comprises the following steps: the self-leveling mortar terrace comprises a self-leveling mortar layer added with a leveling agent and an insulating protective layer on the self-leveling mortar layer, and the manufacturing method comprises the following steps:
(1) preparing a leveling agent: placing dodecafluoroheptyl methacrylate, perfluoroalkyl ethyl acrylate and propylene glycol methyl ether acetate into a container, adding a solvent, and stirring, wherein the dodecafluoroheptyl methacrylate, perfluoroalkyl ethyl acrylate, propylene glycol methyl ether acetate and the solvent are mixed according to a molar ratio of 1: 1.5: 2: 200, after uniformly mixing, dropwise adding azobisisobutyronitrile into the mixed solution, wherein the molar ratio of propylene glycol monomethyl ether acetate to azobisisobutyronitrile is 6:1, then carrying out vacuum degassing, and setting the reaction temperature at 60-65 ℃ under the protection of nitrogen; reacting for 30-50 minutes, cooling to normal temperature, standing for 1 hour to obtain the final leveling agent,
(2) manufacturing a self-leveling mortar layer: firstly, weighing 14 parts of Portland cement, 3 parts of silica fume, 1 part of bentonite, 11 parts of quartz sand, 1.5 parts of redispersible latex powder, 2.5 parts of flatting agent, 0.5 part of water reducing agent, 0.25 part of defoaming agent, 0.2 part of starch ether, 0.1 part of sodium citrate and 9 parts of water, adding the Portland cement, the silica fume and the bentonite into a stirrer by mass, stirring for 2min, then adding the flatting agent and the water, stirring for 4-8min, then adding the quartz sand and the redispersible latex powder, stirring uniformly, finally adding the water reducing agent, the defoaming agent, the starch ether and the sodium citrate, uniformly mixing to obtain self-leveling mortar, and uniformly pouring the self-leveling mortar on a base layer to realize self-leveling; after the self-leveling mortar is cured; curing the mixture for 3 to 5 days at the curing temperature of between 20 and 30 ℃; obtaining a self-leveling mortar layer;
(3) coating to form an insulating protective layer: firstly, preparing and weighing 150 parts of raw material acrylic emulsion, 83 parts of epoxy resin, 25 parts of isocyanate, 58 parts of barite powder, 20 parts of graphite, 20 parts of zirconia powder, 7 parts of dipropylene glycol butyl ether, 5.5 parts of fatty alcohol-polyoxyethylene ether, 1 part of wetting agent, 4 parts of defoaming agent, 4 parts of curing agent and 340 parts of solvent; putting the acrylic emulsion, the epoxy resin and the isocyanate into a mixing vessel, stirring uniformly, adding the solvent, stirring for 5-10min, adding the barite powder, the graphite and the zirconium oxide powder, and continuing stirring; then adding dipropylene glycol butyl ether, fatty alcohol-polyoxyethylene ether, a wetting agent, a defoaming agent and a curing agent, and uniformly stirring; coating an insulating protective layer on the surface of the self-leveling mortar layer, and uniformly coating; airing at normal temperature for 12 hours; and obtaining the self-leveling mortar terrace.

Claims (1)

1. A manufacturing method of a self-leveling mortar terrace for a power distribution room comprises the following steps: the self-leveling mortar terrace comprises a self-leveling mortar layer added with a leveling agent and an insulating protective layer on the self-leveling mortar layer, and the manufacturing method comprises the following steps:
(1) preparing a leveling agent: placing dodecafluoroheptyl methacrylate, perfluoroalkyl ethyl acrylate and propylene glycol methyl ether acetate into a container, adding a solvent, and stirring, wherein the dodecafluoroheptyl methacrylate, perfluoroalkyl ethyl acrylate, propylene glycol methyl ether acetate and the solvent are mixed according to a molar ratio of 1: 1.5: 2: 200, after uniformly mixing, dropwise adding azobisisobutyronitrile into the mixed solution, wherein the molar ratio of propylene glycol monomethyl ether acetate to azobisisobutyronitrile is 6:1, then carrying out vacuum degassing, and setting the reaction temperature at 60-65 ℃ under the protection of nitrogen; reacting for 30-50 minutes, cooling to normal temperature, standing for 1 hour to obtain the final leveling agent,
(2) manufacturing a self-leveling mortar layer: firstly, weighing 14 parts of Portland cement, 3 parts of silica fume, 1 part of bentonite, 11 parts of quartz sand, 1.5 parts of redispersible latex powder, 2.5 parts of flatting agent, 0.5 part of water reducing agent, 0.25 part of defoaming agent, 0.2 part of starch ether, 0.1 part of sodium citrate and 9 parts of water, adding the Portland cement, the silica fume and the bentonite into a stirrer by mass, stirring for 2min, then adding the flatting agent and the water, stirring for 4-8min, then adding the quartz sand and the redispersible latex powder, stirring uniformly, finally adding the water reducing agent, the defoaming agent, the starch ether and the sodium citrate, uniformly mixing to obtain self-leveling mortar, and uniformly pouring the self-leveling mortar on a base layer to realize self-leveling; after the self-leveling mortar is cured; curing the mixture for 3 to 5 days at the curing temperature of between 20 and 30 ℃; obtaining a self-leveling mortar layer;
(3) coating to form an insulating protective layer: firstly, preparing and weighing 150 parts of raw material acrylic emulsion, 83 parts of epoxy resin, 25 parts of isocyanate, 58 parts of barite powder, 20 parts of graphite, 20 parts of zirconia powder, 7 parts of dipropylene glycol butyl ether, 5.5 parts of fatty alcohol-polyoxyethylene ether, 1 part of wetting agent, 4 parts of defoaming agent, 4 parts of curing agent and 340 parts of solvent; putting the acrylic emulsion, the epoxy resin and the isocyanate into a mixing vessel, stirring uniformly, adding the solvent, stirring for 5-10min, adding the barite powder, the graphite and the zirconium oxide powder, and continuing stirring; then adding dipropylene glycol butyl ether, fatty alcohol-polyoxyethylene ether, a wetting agent, a defoaming agent and a curing agent, and uniformly stirring; coating an insulating protective layer on the surface of the self-leveling mortar layer, and uniformly coating; airing at normal temperature for 12 hours; and obtaining the self-leveling mortar terrace.
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CN108861018A (en) * 2018-05-21 2018-11-23 地坪之家科技集团成都有限公司 Mortar terrace coating construction material assembled package method
CN109111151B (en) * 2018-09-12 2021-01-08 中国建材检验认证集团厦门宏业有限公司 Cement self-leveling agent and preparation method thereof
CN109896806A (en) * 2019-04-17 2019-06-18 广东中人岩土工程有限公司 A kind of mill tailings gravity flowing levelling mortar and preparation method thereof
CN112663899B (en) * 2021-01-22 2021-12-07 乐清市路航电气有限公司 Manufacturing method of self-leveling mortar terrace
CN112794693B (en) * 2021-02-22 2022-06-14 湖北联诺建设有限公司 Internal curing self-leveling mortar
CN114804724B (en) * 2022-05-06 2022-10-25 江苏砺彩砂品新材料有限公司 Manufacturing method of self-leveling mortar terrace

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