CN115385649A - Double-foaming-component gypsum-based foam concrete, preparation method thereof and assembled light inner partition wall system applied to double-foaming-component gypsum-based foam concrete - Google Patents

Double-foaming-component gypsum-based foam concrete, preparation method thereof and assembled light inner partition wall system applied to double-foaming-component gypsum-based foam concrete Download PDF

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CN115385649A
CN115385649A CN202211157641.9A CN202211157641A CN115385649A CN 115385649 A CN115385649 A CN 115385649A CN 202211157641 A CN202211157641 A CN 202211157641A CN 115385649 A CN115385649 A CN 115385649A
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gypsum
parts
foaming
water
double
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CN115385649B (en
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赵志刚
张静
刘清源
杨军
任成传
宋海峰
刘兴华
王美娇
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Beijing Yantong Precast Concrete Co ltd
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14Compositions 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 calcium sulfate cements
    • C04B28/142Compositions 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 calcium sulfate cements containing synthetic or waste calcium sulfate cements
    • C04B28/144Compositions 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 calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
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    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00Use 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
    • C04B18/04Waste materials; Refuse
    • C04B18/18Waste materials; Refuse organic
    • C04B18/24Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
    • C04B18/248Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork from specific plants, e.g. hemp fibres
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    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B20/00Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02Treatment
    • C04B20/023Chemical treatment
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    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/02Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B38/00Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/10Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/74Removable non-load-bearing partitions; Partitions with a free upper edge
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/84Walls made by casting, pouring, or tamping in situ
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    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/40Porous or lightweight materials
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    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/20Mortars, concrete or artificial stone characterised by specific physical values for the density
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    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

The application relates to the technical field of building construction, and particularly discloses double-foaming-component gypsum-based foam concrete, a preparation method thereof and an assembled light inner partition wall system applied by the same, wherein the concrete comprises the following raw materials in parts by weight: desulfurized gypsum, cement, water, a chemical foaming agent, a physical foaming agent, a gypsum retarder, a gypsum water reducing agent, polypropylene fibers and palm fibers; the preparation method comprises the following steps: uniformly mixing a gypsum retarder, a gypsum water reducing agent and water, then adding cement, and then adding desulfurized gypsum; adding polypropylene fiber and palm fiber, and stirring uniformly again; diluting a physical foaming agent with water, and adding the physical foaming agent in a foaming way; and adding a chemical foaming agent to obtain the gypsum-based foam concrete with double foaming components. The application also discloses application of the concrete in an assembled light inner partition wall system. The gypsum-based foam concrete with the double foaming components has the characteristics of being not easy to crack, light in weight and guaranteed in strength.

Description

Double-foaming-component gypsum-based foam concrete, preparation method thereof and assembled light inner partition wall system applied to double-foaming-component gypsum-based foam concrete
Technical Field
The application relates to the technical field of building construction, in particular to gypsum-based foam concrete with double foaming components, a preparation method thereof and an assembled light inner partition wall system applied to the gypsum-based foam concrete.
Background
The assembled inner partition wall board as one new kind of energy saving wall material is used widely in building engineering and has the features of increasing building area, reducing wall weight, improving use performance, lowering comprehensive building cost, reducing wet operation, raising building construction efficiency, etc.
For example, chinese patent application publication No. CN 108341637A discloses an assembled inner partition wall panel using lightweight ceramsite as aggregate, which is made of the following raw materials: according to the weight portion, cement accounts for 23-24 parts, fly ash accounts for 10 parts, light ceramsite as coarse aggregate accounts for 29-30 parts, ceramsite sand particles as fine aggregate accounts for 5 parts, an additive accounts for 0.1 part, and the balance is water; the manufacturing method is that various raw materials are mixed together and stirred evenly to prepare the assembled inner partition board taking light ceramsite and ceramsite sand as aggregate. The weight of the assembled inner partition wall board is reduced by the inner partition wall board.
However, the wallboard mainly uses cement as a cementing material, and the inner partition board prepared by the wallboard is easy to crack due to severe temperature shrinkage and volume shrinkage in the cement hydration process. Therefore, a new concrete is needed to be researched and applied to the assembled inner partition board, the concrete is not easy to crack, the light weight of the partition board is ensured, and the strength is ensured at the same time, so that the use requirement of the inner partition board is met.
Disclosure of Invention
In order to prepare the foam concrete which is not easy to crack and light and simultaneously ensures the strength, the application requirement of the inner partition wall board is met, and the application provides the gypsum-based foam concrete with double foaming components, the preparation method of the gypsum-based foam concrete and the assembled light inner partition wall system applying the gypsum-based foam concrete.
In a first aspect, the application provides a gypsum-based foam concrete with double foaming components, which adopts the following technical scheme: the gypsum-based foam concrete with double foaming components comprises the following raw materials in parts by weight:
500-620 parts of desulfurized gypsum, 350-410 parts of cement, 250-370 parts of water, 0.4-7 parts of chemical foaming agent, 0.5-2.5 parts of physical foaming agent, 1.5-2.2 parts of gypsum retarder, 1.8-2.3 parts of gypsum water reducer, 2-3 parts of polypropylene fiber and 3.5-4.5 parts of palm fiber, wherein the chemical foaming agent is aluminum powder or hydrogen peroxide, and the physical foaming agent is vegetable protein foaming agent.
Through adopting above-mentioned technical scheme, regard gypsum and cement as cementitious material in this application, be the gypsum in addition as leading to, alleviate because the follow-up easy fracture of concrete that leads to greatly of cement shrink, the gypsum sclerosis is fast moreover, but the gypsum base partition plate 3-5h that the production obtained can the drawing of patterns, it is slow to compare in the solidification of setting of traditional cement base partition plate, still needs steam curing, gypsum base foam concrete uses reduce cost in this application, improves production efficiency. In addition, because the gypsum has the self-breathing function, when the indoor temperature and humidity change greatly, the self-breathing function of the gypsum product can adjust and improve the temperature and humidity of the environment to a certain extent.
The mode that adopts chemical foaming and physical foaming to combine together in this application, plant protein foaming agent has excellent bubble performance moreover, and foam stability is good, and after cooperating with aluminium powder chemical foaming agent, both guaranteed the light of concrete and still guaranteed its intensity, the surface density and the compressive strength comprehensive properties that obtain the concrete product are more excellent. And the addition of the polypropylene fiber and the palm fiber is matched, so that the crack resistance is further improved, the bending resistance bearing capacity of the concrete product is improved, the gypsum setting speed is effectively controlled by the addition of the gypsum retarder, and the problem that the gypsum is quickly hardened when meeting water is solved. The surface density of the light partition board made of the finally obtained foam concrete reaches 60-70kg/m 2 The compressive strength is not lower than 3.5MPa, so that the use requirement of the foam concrete in the light inner partition wall can be met.
Optionally, the chemical foaming agent is aluminum powder.
By adopting the technical scheme, the comprehensive performance of the surface density and the compressive strength of the concrete product is better by the interaction of the aluminum powder and the physical foaming agent when the chemical foaming agent is selected.
Optionally, the gypsum-based foam concrete with the double foaming components further comprises 1.5-2.5 parts by weight of a foam stabilizer.
By adopting the technical scheme, the stability of the foam concrete is improved by adding the foam stabilizer.
Optionally, the foam stabilizer is calcium stearate.
Optionally, the palm fibers are modified and then added, and the modification method is as follows:
the preparation method comprises the steps of pretreating 50-60 parts by weight of palm fiber, mixing with 150-200 parts by weight of water, adding 45-60 parts by weight of calcium chloride, stirring and mixing, adding 10-18 parts by weight of silane coupling agent, stirring at 40-45 ℃ for 20-30min, filtering, adding 40-50 parts by weight of sodium silicate and 180-250 parts by weight of water, stirring at 40-45 ℃ for 40-60min, filtering, washing with water, and drying at 60-70 ℃ for 1-1.5h to obtain the modified palm fiber.
By adopting the technical scheme, calcium silicate nano particles are formed in the pores of the palm fibers by the reaction of the sodium silicate and the calcium chloride solution, and then the calcium silicate nano particles act with the hydroxyl groups of the palm fibers under the action of the silane coupling agent, so that the heat resistance and the inherent discreteness of the palm fibers are improved, the palm fibers, cement, gypsum and the like are more easily dispersed, and the cracking performance and the mechanical property of the foam concrete are further improved.
Optionally, the pretreatment includes the following steps: the method comprises the following steps of carrying out plasma treatment on palm fibers, then soaking the palm fibers in a mixed solution, then washing the palm fibers with water, drying the palm fibers at a low temperature, and soaking the palm fibers in the mixed solution, wherein the mixed solution is obtained by mixing 10-15 parts of sodium percarbonate, 15-20 parts of ethylenediamine phosphate, 5-10 parts of hydrogen peroxide and 50-60 parts of water.
By adopting the technical scheme, the palm fiber is subjected to plasma treatment to play a part of role in removing colloids, the surface of the palm fiber is rough, the surface activity is improved, the binding activity point position of subsequent calcium silicate nanoparticles and the fiber is improved, more calcium silicate nanoparticles are loaded on the palm fiber, the mechanical property is further improved, colloid impurities such as lignin and pectin in the palm fiber are removed after the palm fiber is subjected to treatment of a mixed solution of ethylenediamine phosphate, hydrogen peroxide and sodium peroxycarbonate, the subsequent immersion of a calcium chloride solution is facilitated, more calcium silicate nanoparticles are generated in pores of the palm fiber, and the mechanical property of foam concrete is further improved.
Optionally, the plasma processing parameters are: the power is 200-300w, the flow is 2-3L/min, and the time is 5-10min.
In a second aspect, the application provides a preparation method of a gypsum-based foam concrete with double foaming components, which adopts the following technical scheme:
a preparation method of gypsum-based foam concrete with double foaming components comprises the following steps:
uniformly mixing a gypsum retarder, a gypsum water reducing agent and water, then adding cement to prepare cement slurry, then adding desulfurized gypsum into the cement slurry, uniformly stirring, then adding polypropylene fiber and palm fiber, and uniformly stirring again to obtain matrix material slurry;
diluting a physical foaming agent with water, foaming to form a foam liquid, and mixing the foam liquid with the matrix material slurry to obtain single-foaming-component foam concrete slurry;
and adding a chemical foaming agent into the single-foaming-component foam concrete slurry to obtain the double-foaming-component gypsum-based foam concrete.
Through adopting above-mentioned technical scheme, because the gypsum meets water and can set for the sclerosis fast, therefore this application at first dissolves the gypsum retarder in aqueous when preparing the concrete, with the gypsum mixing reaction be the aqueous solution that has the gypsum retarder dissolved, effective control gypsum setting speed solves the gypsum and meets water rapid hardening problem, finally makes the low and high two foaming component gypsum-based foam concrete of intensity of surface density.
Optionally, 1.5-2.5 parts by weight of foam stabilizer is added when the gypsum retarder is mixed with water.
In a third aspect, the present application provides an assembled lightweight internal partition wall system, which adopts the following technical scheme:
an assembled light inner partition wall system comprises a plurality of light partition wall boards obtained by pouring gypsum-based foam concrete with double foaming components.
Through adopting above-mentioned technical scheme, when being applied to light interior partition wall system with two foaming component gypsum base foam concrete pouring obtain light partition wall board in this application, satisfy its requirement that matter is light, intensity is high.
Optionally, the assembled lightweight inner partition wall system further includes an adjusting member and an L-shaped partition wall plate, the adjusting member is disposed between adjacent lightweight partition wall plates, the adjusting member includes a first adjusting plate and a second adjusting plate, both the first adjusting plate and the second adjusting plate are formed by connecting a butting section and connecting sections located at two sides of the butting section, the connecting section of the first adjusting plate is a first connecting section, and the connecting section of the second adjusting plate is a second connecting section;
the first connecting section outside with the inboard laminating of second connecting section, just a plurality of spacing holes have been seted up in the first connecting section outside, the inboard of second connecting section is connected with the limiting plate that the slope set up, the limiting plate terminal surface with distance between the second connecting section is along being close to first connecting section crescent.
Through adopting above-mentioned technical scheme, connection size between first regulating plate and the second regulating plate can be adjusted in setting up of regulating part in this application to first regulating plate and second regulating plate width sum can be enlarged, thereby the blank problem that produces when solving the equipment of light partition plate, adjust to needs width through tensile moreover, compare in the tradition and adopt cutting tool cutting or cast-in-place mode of similarity simple and convenient more.
In summary, the present application has the following beneficial effects:
1. according to the gypsum-based foam concrete, gypsum and cement are used as cementing materials, the gypsum is used as a main material, the problem that the concrete is easy to crack in the follow-up process due to large cement shrinkage is solved, the gypsum is fast to harden, the produced gypsum-based partition board can be demoulded within 3-5 hours, and compared with the traditional cement-based partition board, the gypsum-based foam concrete is slow to set and harden and needs steam curing, the cost is reduced, and the production efficiency is improved;
2. the method combines chemical foaming and physical foaming, the vegetable protein foaming agent has excellent bubble performance and good foam stability, and after the vegetable protein foaming agent is matched with the aluminum powder chemical foaming agent, the light weight and the strength of concrete are ensured, and the areal density of the light partition wall board made of the obtained foam concrete reaches 60-70kg/m 2 The compressive strength is not lower than 3.5MPa;
3. according to the application, calcium silicate nano particles are formed in pores of the palm fibers through the reaction of sodium silicate and a calcium chloride solution, and then the calcium silicate nano particles and hydroxyl groups of the palm fibers act under the action of a silane coupling agent, so that the heat resistance and the inherent discreteness of the palm fibers are improved, the palm fibers, cement, gypsum and the like are more easily dispersed, and the cracking performance and the mechanical property of foam concrete are further improved;
4. according to the application, the palm fiber is subjected to plasma treatment to play a part of role in removing colloids, the surface of the palm fiber is rough, the surface activity is improved, the bonding activity point position of subsequent calcium silicate nanoparticles and the fiber is improved, more calcium silicate nanoparticles are loaded on the palm fiber, the mechanical property is further improved, after the palm fiber is subjected to treatment of mixed solution of ethylene diamine phosphate, hydrogen peroxide and sodium peroxycarbonate, colloid impurities such as lignin and pectin in the palm fiber are removed, the subsequent calcium chloride solution is convenient to immerse, more calcium silicate nanoparticles are generated in the pores of the palm fiber, and the mechanical property of the foam concrete is further improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the fabricated lightweight inner partition wall system of the present application;
fig. 2 is a schematic view of the structure of the adjusting member in the present application.
Reference numerals: 1. a light partition wall board; 2. an L-shaped partition plate; 3. an adjustment member; 31. a first adjusting plate; 311. a first connection section; 312. a limiting hole; 32. a second adjusting plate; 321. a second connection section; 33. and a limiting plate.
Detailed Description
The present application will now be described in further detail with reference to the following figures and examples, in which: the following examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer, and the starting materials used in the following examples are available from ordinary commercial sources unless otherwise specified.
In the following examples, the gypsum retarder was selected from the Across architecture science and technology Hebei Co., ltd;
the gypsum water reducing agent is selected from Shanghai Yingshui New Material science and technology Limited company with the model of PG-310 gypsum water reducing agent;
the cement is O.O42.5R ordinary portland cement.
The following preparation examples are those of modified palm fiber
Preparation example 1
A modification method of palm fiber comprises the following steps:
s1, carrying out plasma treatment on palm fibers, wherein plasma treatment parameters are as follows: the power is 300w, the flow is 2L/min, and the time is 10min;
mixing 12kg of sodium percarbonate, 18kg of ethylenediamine phosphate, 8kg of hydrogen peroxide and 55kg of water to obtain a mixed solution;
s2, soaking the palm fibers subjected to plasma treatment in the S1 in the mixed solution obtained in the S2 for 2.5 hours, soaking the palm fibers in the mixed solution, washing the soaked palm fibers with water, and drying at 50 ℃ for 1 hour to obtain primary modified palm fibers;
and S3, mixing 55kg of the primary modified palm fiber obtained in the step S2 with 180kg of water, adding 50kg of calcium chloride, stirring and mixing, adding 14kg of silane coupling agent, stirring for 20min at 45 ℃, filtering, adding 45kg of sodium silicate and 200kg of water, stirring for 50min at 40 ℃, filtering, washing with water, and drying for 1h at 65 ℃ to obtain the modified palm fiber.
Preparation example 2
A modification method of palm fiber comprises the following steps:
s1, carrying out plasma treatment on palm fibers, wherein the plasma treatment parameters are as follows: the power is 200w, the flow is 2L/min, and the time is 10min;
mixing 10kg of sodium percarbonate, 15kg of ethylenediamine phosphate, 5kg of hydrogen peroxide and 50kg of water to obtain a mixed solution;
s2, soaking the palm fibers subjected to plasma treatment in the S1 in the mixed solution obtained in the S2 for 2 hours, soaking the palm fibers in the mixed solution, washing the soaked palm fibers with water, and drying at 45 ℃ for 1.5 hours to obtain primary modified palm fibers;
and S3, mixing 50kg of the primary modified palm fibers obtained in the step S2 with 150kg of water, then adding 45kg of calcium chloride, stirring and mixing, then adding 10kg of silane coupling agent, stirring for 30min at 40 ℃, filtering, then adding 40kg of sodium silicate and 180kg of water, stirring for 60min at 40 ℃, filtering, washing with water, and then drying for 1.5h at 60 ℃ to obtain the modified palm fibers.
Preparation example 3
A modification method of palm fiber comprises the following steps:
s1, carrying out plasma treatment on palm fibers, wherein plasma treatment parameters are as follows: the power is 300w, the flow is 3L/min, and the time is 5min;
mixing 15kg of sodium percarbonate, 20kg of ethylenediamine phosphate, 10kg of hydrogen peroxide and 60kg of water to obtain a mixed solution;
s2, soaking the palm fibers subjected to plasma treatment in the S1 in the mixed solution obtained in the S2 for 3 hours, soaking the palm fibers in the mixed solution, washing the soaked palm fibers with water, and drying at 55 ℃ for 1 hour to obtain primary modified palm fibers;
and S3, mixing 60kg of the primary modified palm fiber obtained in the step S2 with 200kg of water, then adding 60kg of calcium chloride, stirring and mixing, then adding 18kg of silane coupling agent, stirring for 20min at 45 ℃, filtering, then adding 50kg of sodium silicate and 250kg of water, stirring for 40min at 45 ℃, filtering, washing with water, and drying for 1h at 70 ℃ to obtain the modified palm fiber.
Preparation example 4
A method for modifying palm fibers was carried out in the same manner as in production example 1, except that the step S2 was not carried out, and the plasma-treated palm fibers were directly subjected to the treatment of the step S3 and mixed with calcium chloride and water.
Preparation example 5
A modification method of palm fiber is carried out according to the method in preparation example 1, except that sodium percarbonate is not added to the mixed solution in step S1.
Preparation example 6
A method for modifying palm fibers was carried out in the same manner as in production example 1, except that ethylenediamine phosphate was not added to the mixed solution in step S1.
Preparation example 7
A method for modifying palm fibers was carried out in the same manner as in production example 1, except that step S3 was not carried out, and the primary modified palm fibers obtained in step S2 were used as modified palm fibers as they were.
Example 1
A preparation method of gypsum-based foam concrete with double foaming components comprises the following steps:
uniformly mixing 1.6kg of gypsum retarder, 1.8kg of gypsum water reducer, 1.5-2.5kg of foam stabilizer and 270kg of water, then adding 360kg of cement to prepare cement paste, then adding 540kg of desulfurized gypsum into the cement paste, stirring, then adding 2.5kg of polypropylene fiber and 3.8kg of palm fiber, and uniformly stirring again to obtain base material paste;
diluting 1.2kg of physical foaming agent by adding water by 30 mass times, compressing the foaming agent by using high-pressure air for foaming to form foam liquid, and then uniformly mixing the foam liquid and the matrix material slurry to obtain single-foaming-component foam concrete slurry;
adding 0.9kg of chemical foaming agent into the single-foaming-component foam concrete slurry, and uniformly mixing to obtain double-foaming-component gypsum-based foam concrete;
wherein, the physical foaming agent is selected from a vegetable protein foaming agent, the chemical foaming agent is selected from hydrogen peroxide with the concentration of 30wt%, and the foam stabilizer is selected from calcium stearate.
Example 2
A preparation method of gypsum-based foam concrete with double foaming components comprises the following steps:
uniformly mixing 1.5kg of gypsum retarder, 1.8kg of gypsum water reducing agent, 1.5kg of foam stabilizer and 250kg of water, then adding 350kg of cement to prepare cement paste, then adding 500kg of desulfurized gypsum into the cement paste, uniformly stirring, then adding 2kg of polypropylene fiber and 3.5kg of palm fiber, and uniformly stirring again to obtain matrix material paste;
diluting 0.5kg of physical foaming agent by adding water by 30 mass times, compressing the foaming agent by using high-pressure air for foaming to form foam liquid, and then uniformly mixing the foam liquid and the matrix material slurry to obtain single-foaming-component foam concrete slurry;
adding 0.4kgkg of chemical foaming agent into the single-foaming-component foam concrete slurry, and uniformly mixing to obtain double-foaming-component gypsum-based foam concrete;
wherein, the physical foaming agent is selected from a vegetable protein foaming agent, the chemical foaming agent is selected from hydrogen peroxide with the concentration of 30wt%, and the foam stabilizer is selected from calcium stearate.
Example 3
A preparation method of gypsum-based foam concrete with double foaming components comprises the following steps:
uniformly mixing 2.2kg of gypsum retarder, 2.3kg of gypsum water reducer, 2.5kg of foam stabilizer and 370kg of water, then adding 410kg of cement to prepare cement slurry, then adding 620kg of desulfurized gypsum into the cement slurry, uniformly stirring, then adding 3kg of polypropylene fiber and 4.5kg of palm fiber, and uniformly stirring again to obtain matrix material slurry;
diluting 2.5kg of physical foaming agent by 30 mass times with water, compressing the foaming agent by high-pressure air for foaming to form foam liquid, and uniformly mixing the foam liquid and the matrix material slurry to obtain single-foaming-component foam concrete slurry;
adding 7kgkg of chemical foaming agent into the single-foaming-component foam concrete slurry, and uniformly mixing to obtain double-foaming-component gypsum-based foam concrete;
wherein, the physical foaming agent is selected from a vegetable protein foaming agent, the chemical foaming agent is selected from hydrogen peroxide with the concentration of 30wt%, and the foam stabilizer is selected from calcium stearate.
Example 4
A preparation method of gypsum-based foam concrete with double foaming components is carried out according to the method in the example 1, and the difference is that the chemical foaming agent is aluminum powder.
Example 5
A preparation method of gypsum-based foam concrete with double foaming components is carried out according to the method in the example 1, and the difference is that the addition amount of 30wt% of hydrogen peroxide solution of a chemical foaming agent is 6.8kg.
Examples 6 to 8
A preparation method of gypsum-based foam concrete with double foaming components is carried out according to the method in the embodiment 4, except that the palm fibers are replaced by the modified palm fibers prepared in the preparation examples 1-3 in equal amount.
Examples 9 to 12
A method for preparing gypsum-based foam concrete with double foaming components is carried out according to the method in the embodiment 6, except that the palm fibers are equivalently replaced by the modified palm fibers obtained in the preparation examples 4-7.
Comparative example 1
A preparation method of gypsum-based foam concrete with double foaming components is carried out according to the method in the embodiment 4, except that no palm fiber is added in the raw materials.
Comparative example 2
A preparation method of gypsum-based foam concrete with double foaming components is carried out according to the method in the embodiment 4, except that the palm fibers are replaced by polypropylene fibers in equal amount.
Comparative example 3
A preparation method of gypsum-based foam concrete with double foaming components is carried out according to the method in the embodiment 4, and is characterized in that desulfurized gypsum is replaced by cement in an equal amount.
Comparative example 4
A method for preparing gypsum-based foam concrete with double foaming components is carried out according to the method in example 4, except that the addition amount of cement is 540kg, and the addition amount of desulfurized gypsum is 360kg.
Performance detection
Pouring the gypsum-based foam concrete with double foaming components prepared in the above examples and comparative examples into a mold, waiting for 4 hours to obtain a light partition wall, detecting the surface density and the compressive strength of the light partition wall, and simultaneously performing a circular ring test on the gypsum-based foam concrete with double foaming components prepared in the examples and comparative examples to obtain the cracking time, wherein the detection results are shown in the following table 1:
table 1:
Figure BDA0003859503120000081
Figure BDA0003859503120000091
as can be seen from Table 1 above, the areal density of the lightweight partition wall panels 1 obtained in the present application is from 60 to 70kg/m 2 The compressive strength is not lower than 3.5MPa, and meets the relevant regulation in JC/T169-2016.
By combining the detection results of the embodiment 1, the embodiment 4 and the embodiment 5, it can be seen that the chemical foaming agent has a better foaming effect compared with the hydrogen peroxide, and the obtained surface density of the lightweight partition board 1 is smaller, and by combining the embodiment 5, even if the addition amount of the hydrogen peroxide is increased, the surface density of the lightweight partition board 1 is still larger, and the compressive strength is reduced when the aluminum powder is selected, but the compressive strength is still more than 4.5MPa, so that the product requirements are met, the surface density is obviously reduced, and the comprehensive effect is better.
By combining the detection results of the embodiment 4 and the embodiments 6 to 8, it can be seen that when the palm fibers are replaced with the modified palm fibers, the compressive strength of the light partition board 1 is increased, the influence of the surface density is small, probably because the palm fibers are light, the generated nano calcium silicate is also light, the comprehensive performance of the light partition board 1 is better, and the crack resistance of the concrete is obviously improved.
By combining the detection results of the embodiment 6 and the embodiments 9 to 11, it can be seen that when nano calcium silicate is directly loaded on the palm fibers after the plasma treatment in the palm fiber modification step in the embodiment 9, the crack resistance of the obtained concrete is reduced, and the areal density is higher, probably because more colloid impurities are in the palm fibers; in both examples 10 and 11, when sodium percarbonate or ethylenediamine phosphate was not added to the mixed solution, the crack resistance of the concrete was reduced; and the detection result in the embodiment 12 is combined, the modified palm fibers added into the concrete are only subjected to plasma treatment and mixed solution treatment, and when nano calcium silicate loading is not carried out, the anti-cracking performance and the compressive strength of the concrete are reduced.
By combining the detection results of the embodiment 4 and the comparative examples 1 and 2, it can be seen that when the palm fibers and the polypropylene fibers are added into the raw materials for compounding, the anti-cracking performance of the concrete and the comprehensive performance of the surface density of the prepared partition board are better; and the detection results of the comparative example 3 and the comparative example 4 are combined, so that the crack resistance of the prepared concrete is poor when only cement is used as an adhesive material or the addition amount of the cement is large in the system.
Application example
The concrete obtained in the embodiment of the application is applied to the fabricated light inner partition wall system, as shown in fig. 1, the fabricated light inner partition wall system comprises a light partition wall board 1, a regulating member 3 and an L-shaped partition wall board, the light partition wall board 1 is formed by pouring the double-foaming-component gypsum-based foam concrete prepared in the embodiment of the application and pouring the double-foaming-component gypsum-based foam concrete into a mold, and the double-foaming-component gypsum-based foam concrete is obtained by demolding after standing for 3-5 hours, obviously, the gypsum-based foam concrete prepared in the application is applied to pouring and forming of the light partition wall board 1, steam curing is not needed, standing for 3-5 hours is directly performed, the cost is greatly reduced, the initial setting time is only about 1 hour, and the time is greatly shortened.
Because the wiring method of traditional light partition wall is for slotting the installation spool on the wallboard surface, but like this side wallboard surface fluting arouses the wall fracture easily, on the other hand, on-the-spot fluting can produce more dust and construction waste, and the on-the-spot construction degree of difficulty is great, therefore light interior partition wall system in this application is formed for assembling by a plurality of light partition wall boards 1, and the corner is formed through connecting L shape partition wall board 2, forms the light interior partition wall system that has the cavity, so can assemble the pipeline installation in the cavity before the coincide installation.
However, in the assembling process of the light partition board 1, due to the fact that the size of the light partition board 1 is fixed, the problem of leaving a blank space can occur, a cutting tool can be adopted for cutting or a similar cast-in-place method can be adopted in a solving mode, more dust and construction waste can be generated, and therefore the adjusting piece 3 is arranged between the adjacent light partition boards 1 with the blank space.
As shown in fig. 1 and 2, the adjusting member 3 is disposed between adjacent light partition boards 1, the adjusting member 3 includes a first adjusting plate 31 and a second adjusting plate 32, both the first adjusting plate 31 and the second adjusting plate 32 are formed by connecting an abutting section and a connecting section at both sides of the abutting section, the connecting section of the first adjusting plate 31 is a first connecting section 311, and the connecting section of the second adjusting plate 32 is a second connecting section 321;
the outer side of the first connecting section 311 is attached to the inner side of the second connecting section 321, a plurality of limiting holes 312 are formed in the outer side of the first connecting section 311, the inner side of the second connecting section 321 is connected with a limiting plate 33 which is obliquely arranged, and the distance between the end face of the limiting plate 33 and the second connecting section 321 is gradually increased along the direction close to the first connecting section 311.
When assembling light interior partition wall system, assemble a plurality of light partition wall board 1, the corner adopts L shaped plate to connect, form the light interior partition wall system that has the cavity, leave empty position department at light partition wall board 1 and be provided with the regulating plate, slide along spacing hole 312 through limiting plate 33, peg graft in the spacing hole 312 of different positions, thereby can adjust the coincidence area of first regulating plate 31 and second regulating plate 32, and then realize that first regulating plate 31 and second regulating plate 32 transfer the width, make one side and adjacent light partition wall board 1 butt that first regulating plate 31 and second regulating plate 32 kept away from each other, realize leaving empty filling of position.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims (10)

1. The double-foaming-component gypsum-based foam concrete is characterized by comprising the following raw materials in parts by weight:
500-620 parts of desulfurized gypsum, 350-410 parts of cement, 250-370 parts of water, 0.4-7 parts of chemical foaming agent, 0.5-2.5 parts of physical foaming agent, 1.5-2.2 parts of gypsum retarder, 1.8-2.3 parts of gypsum water reducer, 2-3 parts of polypropylene fiber and 3.5-4.5 parts of palm fiber, wherein the chemical foaming agent is aluminum powder or hydrogen peroxide, and the physical foaming agent is plant protein foaming agent.
2. The dual foam component gypsum-based foamed concrete according to claim 1, wherein: the chemical foaming agent is aluminum powder.
3. The dual foam component gypsum-based foamed concrete according to claim 1, wherein: the gypsum-based foam concrete with the double foaming components also comprises 1.5-2.5 parts by weight of a foam stabilizer.
4. A dual foam component gypsum-based foamed concrete according to claim 3, wherein: the foam stabilizer is calcium stearate.
5. The dual foam component gypsum-based foamed concrete according to claim 1, wherein: the palm fiber is added after being modified, and the modification method comprises the following steps:
the preparation method comprises the steps of pretreating 50-60 parts by weight of palm fiber, mixing with 150-200 parts by weight of water, adding 45-60 parts by weight of calcium chloride, stirring and mixing, adding 10-18 parts by weight of silane coupling agent, stirring at 40-45 ℃ for 20-30min, filtering, adding 40-50 parts by weight of sodium silicate and 180-250 parts by weight of water, stirring at 40-45 ℃ for 40-60min, filtering, washing with water, and drying at 60-70 ℃ for 1-1.5h to obtain the modified palm fiber.
6. The double foam component gypsum-based foamed concrete according to claim 5, wherein: the pretreatment comprises the following steps: the method comprises the following steps of carrying out plasma treatment on palm fibers, soaking the palm fibers in a mixed solution, then washing the palm fibers with water, drying the palm fibers at a low temperature, and soaking the palm fibers in the mixed solution, wherein the mixed solution is obtained by mixing 10-15 parts of sodium percarbonate, 15-20 parts of ethylenediamine phosphate, 5-10 parts of hydrogen peroxide and 50-60 parts of water.
7. The dual foam component gypsum-based foamed concrete according to claim 6, wherein: the plasma processing parameters are as follows: the power is 200-300w, the flow is 2-3L/min, and the time is 5-10min.
8. The method of claim 1, wherein the method comprises the following steps: the method comprises the following steps:
uniformly mixing a gypsum retarder, a gypsum water reducing agent and water, then adding cement to prepare cement slurry, then adding desulfurized gypsum into the cement slurry, uniformly stirring, then adding polypropylene fiber and palm fiber, and uniformly stirring again to obtain matrix material slurry;
diluting a physical foaming agent with water, foaming to form a foam liquid, and mixing the foam liquid with the matrix material slurry to obtain single-foaming-component foam concrete slurry;
and adding a chemical foaming agent into the single-foaming-component foam concrete slurry to obtain the double-foaming-component gypsum-based foam concrete.
9. An assembled light inner partition wall system is characterized in that: comprising a lightweight partition wall panel (1) cast from a double foam component gypsum-based foamed concrete according to any one of claims 1 to 7.
10. An assembled lightweight internal partition wall system according to claim 9, wherein: the assembled light inner partition wall system further comprises an adjusting piece (3) and L-shaped partition wall plates (2), the adjusting piece (3) is arranged between the adjacent light partition wall plates (1), the adjusting piece (3) comprises a first adjusting plate (31) and a second adjusting plate (32), the first adjusting plate (31) and the second adjusting plate (32) are formed by connecting a butting section and connecting sections positioned on two sides of the butting section, the connecting section of the first adjusting plate (31) is a first connecting section (311), and the connecting section of the second adjusting plate (32) is a second connecting section (321);
first linkage segment (311) the outside with the inboard laminating of second linkage segment (321), just a plurality of spacing holes (312) have been seted up in first linkage segment (311) the outside, the inboard of second linkage segment (321) is connected with limiting plate (33) that the slope set up, limiting plate (33) terminal surface with distance between second linkage segment (321) is along being close to first linkage segment (311) crescent.
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2377484A (en) * 1940-09-25 1945-06-05 Celotex Corp Fiber plank
EP2842921A1 (en) * 2013-08-27 2015-03-04 Construction Research & Technology GmbH Novel fibers, methods for their preparation and use in the manufacture of reinforced elements
CN205242800U (en) * 2015-11-17 2016-05-18 嘉兴赛华电气有限公司 Adjustable furred ceiling fixing device
CN113336570A (en) * 2021-07-02 2021-09-03 重庆大学 Novel composite foamed gypsum sound-absorbing material and preparation method thereof
CN214833751U (en) * 2020-12-31 2021-11-23 山东圆梦绿色建筑科技有限公司 Double-layer composite inner wallboard and inner wall enclosure system
CN215054268U (en) * 2021-01-18 2021-12-07 北京市住宅产业化集团股份有限公司 Assembled partition wall system
CN113880522A (en) * 2021-10-22 2022-01-04 福建省闽宏建材实业有限公司 Pervious concrete and preparation method thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2377484A (en) * 1940-09-25 1945-06-05 Celotex Corp Fiber plank
EP2842921A1 (en) * 2013-08-27 2015-03-04 Construction Research & Technology GmbH Novel fibers, methods for their preparation and use in the manufacture of reinforced elements
US20160194245A1 (en) * 2013-08-27 2016-07-07 Construction Research & Technology Gmbh Novel fibers, methods for their preparation and use in the manufacture of reinforced elements
CN205242800U (en) * 2015-11-17 2016-05-18 嘉兴赛华电气有限公司 Adjustable furred ceiling fixing device
CN214833751U (en) * 2020-12-31 2021-11-23 山东圆梦绿色建筑科技有限公司 Double-layer composite inner wallboard and inner wall enclosure system
CN215054268U (en) * 2021-01-18 2021-12-07 北京市住宅产业化集团股份有限公司 Assembled partition wall system
CN113336570A (en) * 2021-07-02 2021-09-03 重庆大学 Novel composite foamed gypsum sound-absorbing material and preparation method thereof
CN113880522A (en) * 2021-10-22 2022-01-04 福建省闽宏建材实业有限公司 Pervious concrete and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
V. DUCMAN等: "Characterization of geopolymer fly-ash based foams obtained with the addition of Al powder or H2O2 as foaming agents", no. 113, pages 207 - 213, XP029419245, DOI: 10.1016/j.matchar.2016.01.019 *

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