CN109437802B - Sulphoaluminate cement assembled integrated inner wall and preparation method thereof - Google Patents
Sulphoaluminate cement assembled integrated inner wall and preparation method thereof Download PDFInfo
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- CN109437802B CN109437802B CN201811539482.2A CN201811539482A CN109437802B CN 109437802 B CN109437802 B CN 109437802B CN 201811539482 A CN201811539482 A CN 201811539482A CN 109437802 B CN109437802 B CN 109437802B
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- 239000004568 cement Substances 0.000 title claims abstract description 159
- 238000002360 preparation method Methods 0.000 title claims abstract description 32
- 238000009413 insulation Methods 0.000 claims abstract description 89
- 239000002994 raw material Substances 0.000 claims abstract description 40
- 239000000463 material Substances 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 72
- 238000005187 foaming Methods 0.000 claims description 51
- 239000003638 chemical reducing agent Substances 0.000 claims description 33
- 239000010440 gypsum Substances 0.000 claims description 33
- 229910052602 gypsum Inorganic materials 0.000 claims description 32
- 239000004088 foaming agent Substances 0.000 claims description 22
- -1 polypropylene Polymers 0.000 claims description 22
- 239000003795 chemical substances by application Substances 0.000 claims description 21
- 239000000835 fiber Substances 0.000 claims description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 20
- 239000004743 Polypropylene Substances 0.000 claims description 20
- 229920001155 polypropylene Polymers 0.000 claims description 20
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 17
- 238000002156 mixing Methods 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 15
- 239000002956 ash Substances 0.000 claims description 13
- 239000010881 fly ash Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 229920005646 polycarboxylate Polymers 0.000 claims description 7
- 229920005610 lignin Polymers 0.000 claims description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 4
- 229910052593 corundum Inorganic materials 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 4
- 238000006477 desulfuration reaction Methods 0.000 claims description 2
- 230000023556 desulfurization Effects 0.000 claims description 2
- 239000011810 insulating material Substances 0.000 abstract description 16
- 239000011148 porous material Substances 0.000 abstract description 10
- 238000001035 drying Methods 0.000 abstract description 9
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- 238000000576 coating method Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 239000011381 foam concrete Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
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- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 description 3
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 3
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 description 3
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 3
- 239000002910 solid waste Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
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- 239000004604 Blowing Agent Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 239000011490 mineral wool Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
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- 239000008030 superplasticizer Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
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- 239000011230 binding agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
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- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000004620 low density foam Substances 0.000 description 1
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- 238000005259 measurement Methods 0.000 description 1
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- 229920000573 polyethylene Polymers 0.000 description 1
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- 239000011496 polyurethane foam Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
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- 238000010998 test method Methods 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Images
Classifications
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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
- C04B28/14—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 calcium sulfate cements
- C04B28/142—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/144—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
-
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/10—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/88—Insulating elements for both heat and sound
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
-
- 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
- C04B2111/40—Porous or lightweight 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
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Civil Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Electromagnetism (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Acoustics & Sound (AREA)
- Building Environments (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Abstract
The invention belongs to the technical field of building materials, and particularly relates to a sulphoaluminate cement assembled integrated inner wall and a preparation method thereof. The sulphoaluminate cement assembled integrated inner wall provided by the invention takes sulphoaluminate cement as a main raw material, has the characteristics of high hydration hardening rate and early strength, has the advantages of low alkalinity, high stability and small drying shrinkage expansion rate, is used for preparing a porous foam heat-insulating material, can quickly condense and solidify generated foam in a cementing material to form a pore structure, and is favorable for improving the stability of the foam and the performance of a product. The embodiment result shows that the thermal conductivity coefficient of the thermal insulation plate in the sulphoaluminate cement assembled integrated inner wall is 0.033-0.035W/(m.k), the compressive strength reaches 0.7-1.0 MPa, and the performance requirement of the assembled integrated inner wall is met.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to a sulphoaluminate cement assembled integrated inner wall and a preparation method thereof.
Background
With the rapid development of building industry and housing industrialization, people have higher and higher performance requirements on building materials, and attention is paid to the heat preservation effect of the building materials besides the safety performance requirements. In order to obtain a building material with heat preservation performance, researchers develop various materials with heat preservation performance, such as organic heat preservation materials, inorganic heat preservation materials and heat preservation materials formed by compounding inorganic gel materials and heat preservation aggregates, which are common heat preservation materials. The existing organic heat-insulating materials, such as polystyrene board heat-insulating materials, foamed polyurethane foam heat-insulating materials and the like, have good heat-insulating performance, but have poor fire resistance and potential safety hazards; existing inorganic thermal insulation materials, such as: the aluminum silicate fiber heat-insulating material and the rock wool heat-insulating material have high preparation cost, and limit the large-scale application of the materials.
Disclosure of Invention
The invention aims to provide a sulphoaluminate cement assembled integrated inner wall and a preparation method thereof.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention provides a sulphoaluminate cement assembled integrated inner wall, which comprises a sulphoaluminate cement foaming insulation board and finishing coats bonded on two opposite surfaces of the sulphoaluminate cement foaming insulation board;
the preparation raw materials of the sulphoaluminate cement foaming insulation board comprise sulphoaluminate cement, desulfurized ash, a water reducing agent, a foaming agent, graphite powder, polypropylene fibers and water;
the preparation raw material of the facing layer comprises desulfurized gypsum;
the thickness of the sulphoaluminate cement foaming insulation board is 45-50 mm.
Preferably, the preparation raw materials of the sulphoaluminate cement foaming insulation board comprise the following components in parts by mass: 69-81 parts of sulphoaluminate cement, 23-27 parts of desulfurized ash, 3.7-7.2 parts of foaming agent, 0.6-1.4 parts of water reducing agent, 0.5-1.4 parts of graphite powder, 0.1-0.3 part of polypropylene fiber and 40-49 parts of water.
Preferably, the blowing agent comprises hydrogen peroxide or sodium a-olefin sulfonate;
the water reducing agent comprises a lignin water reducing agent or a polycarboxylate high-efficiency water reducing agent;
the desulfurization ash comprises the following components in percentage by mass: SiO 2241.87～42.51％、Al2O325.37～26.43％、CaO10.42～11.56％、SO35.47～6.35％。
Preferably, the thickness of the single surface of the veneer layer is 10-15 mm independently.
Preferably, the preparation raw materials of the facing layer comprise desulfurized gypsum, retarder, water-retaining agent and water;
the mass ratio of the desulfurized gypsum to the water is 1 (0.40-0.45);
the mass of the retarder is 0.015-0.03% of that of the desulfurized gypsum;
the mass of the water-retaining agent is 0.10-0.20% of that of the desulfurized gypsum.
Preferably, the heat-insulating layer and the finishing layer are bonded through an interface agent, and the interface agent comprises cement paste.
The invention provides a preparation method of the sulphoaluminate cement assembled integrated inner wall in the technical scheme, which comprises the following steps:
(1) mixing sulphoaluminate cement, desulfurized fly ash, graphite powder and polypropylene fiber to obtain an admixture;
(2) mixing a foaming agent and a water reducing agent with the admixture in the step (1), and then adding water to obtain a casting material;
(3) sequentially pouring and maintaining the pouring material obtained in the step (2) to obtain a sulphoaluminate cement foaming insulation board;
(4) and (4) adhering a mixture of raw materials to the surface of the sulphoaluminate cement foaming insulation board obtained in the step (3) to form a facing layer, and curing to obtain the sulphoaluminate cement assembled integrated inner wall.
Preferably, the curing in the step (3) is normal-temperature curing, the temperature of the normal-temperature curing is 20-25 ℃, and the time of the normal-temperature curing is 7-14 days.
The invention provides a sulphoaluminate cement assembled integrated inner wall, which comprises a sulphoaluminate cement foaming insulation board and finishing coats bonded on two opposite surfaces of the sulphoaluminate cement foaming insulation board; the preparation raw materials of the sulphoaluminate cement foaming insulation board comprise sulphoaluminate cement, a water reducing agent, a foaming agent, graphite powder, polypropylene fibers and water; the preparation raw material of the facing layer comprises desulfurized gypsum; the thickness of the sulphoaluminate cement foaming insulation board is 45-50 mm. The sulphoaluminate cement assembled integrated inner wall provided by the invention takes sulphoaluminate cement as a main raw material, has the characteristics of high hydration hardening rate and early strength, has the advantages of low alkalinity, high stability and low drying shrinkage expansion rate, is used for preparing a porous foam heat-insulating material, can quickly condense and solidify generated foam in a cementing material to form a pore structure, and is beneficial to improving the stability of the foam and the performance of a product; the foaming agent can form closed pores, so that the board with lower density, excellent waterproof performance, heat preservation performance and compressive strength is obtained, and the production cost of the building material is reduced. The embodiment result shows that the thermal conductivity coefficient of the sulphoaluminate cement assembled integrated inner wall is 0.033-0.035W/(m.k), the compressive strength reaches 0.7-1.0 MPa, and the performance requirement of the sulphoaluminate cement assembled integrated inner wall is met.
Drawings
FIG. 1 is a schematic structural view of a sulphoaluminate cement fabricated integrated interior wall provided by the present invention;
FIG. 2 is an exploded view of the structural schematic diagram of the sulphoaluminate cement fabricated integrated interior wall provided by the present invention;
in the figure, 1-1 is a facing layer, 2 is a sulphoaluminate cement foaming insulation board, and 1-2 is a facing layer.
Detailed Description
The invention provides a sulphoaluminate cement assembled integrated inner wall, which comprises a sulphoaluminate cement foaming insulation board and finishing coats bonded on two opposite surfaces of the sulphoaluminate cement foaming insulation board;
the preparation raw materials of the sulphoaluminate cement foaming insulation board comprise sulphoaluminate cement, desulfurized ash, a water reducing agent, a foaming agent, graphite powder, polypropylene fibers and water;
the preparation raw material of the facing layer comprises desulfurized gypsum;
the thickness of the sulphoaluminate cement foaming insulation board is 45-50 mm.
As shown in figures 1-2, the sulphoaluminate cement assembled integrated interior wall provided by the invention comprises a sulphoaluminate cement foamed insulation board 2 and finishing coats 1-1 and 1-2 bonded on two opposite surfaces of the sulphoaluminate cement foamed insulation board 2.
The sulphoaluminate cement assembled type integrated inner wall comprises a sulphoaluminate cement foaming insulation board, and the preparation raw materials of the sulphoaluminate cement foaming insulation board comprise sulphoaluminate cement, desulfurized ash, a water reducing agent, a foaming agent, graphite powder, polypropylene fibers and water.
The preparation raw materials of the sulphoaluminate cement foaming insulation board provided by the invention preferably comprise 69-81 parts of sulphoaluminate cement by mass, more preferably 71-78 parts of sulphoaluminate cement by mass, and even more preferably 74-75 parts of sulphoaluminate cement by mass. In the invention, the sulphoaluminate cement comprises the following mineral components in mass content: SiO 22 9.63％、CaO 42.58％、Al2O3 34.05、Fe2O3 1.20％、MgO 1.31％、SO38.63 percent, and the balance of inevitable impurities. In the invention, the loss on ignition of the low-alkalinity fast-hardening sulfate cement is 0.28. The sulphoaluminate cement preferably prepared from the components has the characteristics of high hydration hardening rate, early strength, low alkalinity, high stability and low dry shrinkage expansion rate.
On the basis of the mass parts of the sulphoaluminate cement, the preparation raw material of the sulphoaluminate cement foaming insulation board provided by the invention preferably comprises 23-27 parts of desulfurized ash, more preferably 24-26 parts of desulfurized ash, and still more preferably 25 parts of desulfurized ash. In the invention, the desulfurized fly ash comprises the following components in percentage by mass, namely SiO2 41.87～42.51％、Al2O3 25.37～26.43％、CaO 10.42～11.56％、SO35.47-6.35%. In the examples of the present invention, the desulfurized fly ash isPreferably from coal gangue power plants, made in the Shanxi province.
The preparation raw materials of the sulphoaluminate cement foaming insulation board provided by the invention preferably comprise 3.7-7.2 parts of foaming agent, more preferably 4.3-6.7 parts, and even more preferably 5.4-5.7 parts by mass based on the sulphoaluminate cement. In the present invention, the blowing agent preferably comprises hydrogen peroxide or sodium a-olefin sulfonate, more preferably hydrogen peroxide. In the present invention, the hydrogen peroxide is preferably used as a hydrogen peroxide solution, and the mass concentration of the hydrogen peroxide solution is preferably 20 to 30%, and more preferably 25 to 28%. The invention preferably uses hydrogen peroxide as a foaming agent, the hydrogen peroxide is decomposed to generate oxygen and water, and a closed pore structure can be formed on the surface and inside of the cement mixture in the oxygen escape process, so that the obtained plate has excellent heat insulation performance, sound insulation performance and light weight.
The preparation raw materials of the sulphoaluminate cement foaming insulation board provided by the invention preferably comprise 0.6-1.4 parts of water reducing agent, more preferably 0.8-1.3 parts, and even more preferably 0.9-1.2 parts by mass based on the sulphoaluminate cement. In the present invention, the water reducing agent preferably includes a lignin-based water reducing agent and/or a polycarboxylate-based high-efficiency water reducing agent, and more preferably a polycarboxylate-based high-efficiency water reducing agent. When the water reducing agent is a mixture of two components, the invention has no special requirement on the dosage ratio of the components in the mixture. The invention preferably uses the polycarboxylate high-efficiency water reducing agent, obviously reduces the water-cement ratio of the slurry and improves the density of the wall of the foam hole under the condition of ensuring the same workability of the foam concrete slurry, thereby improving the mechanical property, the thermal property and the like of the product.
The preparation raw materials of the sulphoaluminate cement foaming insulation board provided by the invention preferably comprise 0.6-1.4 parts of graphite powder, more preferably 0.8-1.3 parts, and even more preferably 0.9-1.3 parts by mass based on the parts by mass of the sulphoaluminate cement. In the invention, the content of C atoms in the graphite powder is not less than 90 percent; the ignition residue of the graphite powder is preferably 20-30%, more preferably 25%, and the drying weight loss is preferably 45-50%, more preferably 50%. In the invention, the graphite powder has good dispersibility in a mixture of raw materials for preparing the sulphoaluminate cement foaming insulation board, and can form high-efficiency reflection on heat; the infrared ray absorber contained in the graphite powder can greatly improve the heat preservation and insulation performance of the plate; in addition, the graphite powder can improve the energy efficiency and the comprehensive performance of the slurry.
The preparation raw materials of the sulphoaluminate cement foaming insulation board provided by the invention preferably comprise 0.1-0.3 part of polypropylene fiber, and more preferably 0.2 part of sulphoaluminate cement. In the invention, the length of the polypropylene fiber is preferably 3-6 mm, and more preferably 4-5 mm; the diameter of the polypropylene fiber is preferably 18-48 μm, and more preferably 20-40 μm; the tensile strength of the polypropylene fiber is preferably more than or equal to 358 MPa. According to the invention, the anti-fracture capability of the plate is preferably enhanced by the polypropylene fiber, so that the capability of the plate to generate plastic deformation under the action of external force is greatly improved, and the toughness of the heat-insulating plate is improved.
The preparation raw materials of the sulphoaluminate cement foaming insulation board provided by the invention comprise 40-49 parts of water, preferably 43-47 parts of water, and more preferably 43-46 parts of water based on the mass parts of the sulphoaluminate cement. The water is not particularly required in the present invention and may be any known to those skilled in the art.
The invention takes sulphoaluminate cement, desulfurized fly ash, water reducing agent, foaming agent, graphite powder, polypropylene fiber and water as raw materials to prepare the sulphoaluminate cement foaming insulation board, and the desulfurized fly ash is utilized to reduce the consumption of cement and supplement shrinkage, thereby improving the stability of the size of the board. Under the action of the foaming agent, the surfaces and the interiors of the mixture of cement, desulfurized ash, water and the like form a closed pore structure, so that the obtained heat-insulating plate has excellent heat-insulating property, sound-insulating property and light weight. The invention also improves the workability of the foam concrete slurry through the water reducing agent, reduces the water-cement ratio of the slurry, and improves the density of the wall of the foam hole, thereby improving the mechanical property and the thermal property of the heat-insulating plate product. In the invention, the graphite powder can be stably dispersed in the slurry of raw material components such as cement, desulfurized fly ash, water and the like, can reflect heat radiation, and further improves the heat preservation and insulation performance of the plate; the polypropylene fiber can enhance the fracture resistance of the sulphoaluminate cement and greatly improve the plastic deformation capacity of the board under the action of external force, so that the toughness of the heat-insulating board is well developed.
The density of the sulphoaluminate cement foaming insulation board is lower than 170kg/m3Is obviously lower than the 200kg/m of the prior heat insulation board3Belonging to a typical low-density heat-insulation board. In the invention, the sulphoaluminate cement foaming insulation board is provided with pores, and the pore diameter of the pores is preferably 1-5 mm, and more preferably 2-3 mm; the porosity is calculated by the total volume of the sulphoaluminate cement foamed insulation board in the volume occupied by the pores, and the porosity of the sulphoaluminate cement foamed insulation board is preferably 90.3-91.2%, and more preferably 90.5-90.8%. The sulphoaluminate cement foaming insulation board provided by the invention has the porosity.
In the invention, the thickness of the sulphoaluminate cement foaming insulation board is preferably 45-50 mm, and more preferably 50 mm. The heat conductivity coefficient of the sulphoaluminate cement foaming insulation board is 0.033-0.035W/(m.k); the compressive strength is preferably 0.7-1.0 MPa; the maximum sound insulation amount reaches 50 dB.
The sulphoaluminate cement assembled integrated interior wall provided by the invention also comprises facing layers bonded to two opposite surfaces of the sulphoaluminate cement foamed insulation board, and the preparation raw materials of the facing layers comprise desulfurized gypsum. In the present invention, the facing layer is preferably prepared from raw materials including desulfurized gypsum, a retarder, a water retaining agent and water.
In the invention, CaSO in the desulfurized gypsum4The mass content of (a) is preferably not less than 90%, more preferably 91-95%; the mass ratio of the desulfurized gypsum to the water is preferably 1 (0.40-0.45), more preferably 1 (0.4-0.45), and still more preferably 1: 0.43.
In the present invention, the retarder preferably includes a calcareous synthetic polyamide; the mass of the retarder is preferably 0.015-0.03% of that of the desulfurized gypsum, and more preferably 0.02-0.025%.
In the present invention, the water retaining agent preferably includes Hydroxypropylmethylcellulose (HPMC); the viscosity of the water retaining agent is preferably 80000-120000 Pa & s, more preferably 100000Pa & s; the mass of the water retaining agent is preferably 0.10-0.20% of the mass of the desulfurized gypsum, and more preferably 0.15-0.20%.
In the invention, the thickness of the single surface of the veneer layer is preferably 10-15 mm independently, and more preferably 13-15 mm. In the invention, the thickness of the facing layers on two opposite sides of the same sulphoaluminate cement foamed insulation board is preferably the same. In the invention, the sulphoaluminate cement foamed insulation board and the finishing coat are preferably bonded through an interface agent, and the interface agent preferably comprises cement paste.
The invention provides a preparation method of the sulphoaluminate cement assembled type integrated inner wall in the technical scheme, which comprises the following steps:
(1) mixing sulphoaluminate cement, desulfurized fly ash, graphite powder and polypropylene fiber to obtain an admixture;
(2) mixing a foaming agent and a water reducing agent with the admixture in the step (1), and then adding water to obtain a casting material;
(3) sequentially pouring and maintaining the pouring material obtained in the step (2) to obtain a sulphoaluminate cement foaming insulation board;
(4) and (4) adhering a mixture of raw materials to the surface of the sulphoaluminate cement foaming insulation board obtained in the step (3) to form a facing layer, and curing to obtain the sulphoaluminate cement assembled integrated inner wall.
The invention mixes sulphoaluminate cement, desulfurized fly ash, graphite powder and polypropylene fiber to obtain admixture. The mixing mode of the sulphoaluminate cement, the desulphurized ash, the graphite powder and the polypropylene fiber is not required to be specially mixed, and the method is well known by the technical personnel in the field. In the present embodiment, the mixing is preferably performed in a cement mortar mixer.
After the admixture is obtained, the foaming agent and the water reducing agent are mixed with the admixture, and then water is added to obtain the casting material. In the invention, the mixing is preferably carried out under the condition of stirring, and the stirring speed is preferably 80-100 r/min, and more preferably 85-90 r/min; the stirring time is preferably 1-2 min, and more preferably 2 min. In the present invention, the foaming agent and the water reducing agent are preferably mixed in a solution manner to promote the dispersion of the foaming agent and the water reducing agent in the admixture; the foaming agent and the water reducing agent are preferably independently prepared into a solution with the mass concentration of 20-30%, and more preferably 25-30%. In the invention, the water for preparing the water reducing agent solution and the foaming agent solution is preferably part of water of the preparation raw materials of the sulphoaluminate cement foaming insulation board.
After the pouring material is obtained, the pouring material is sequentially poured and maintained, and the sulphoaluminate cement foaming insulation board is obtained. The invention has no special requirements for the concrete implementation mode of pouring and the mould for pouring, and can be realized by adopting the method well known by the technical personnel in the field.
After pouring, the pouring blank obtained by pouring is maintained, and the sulphoaluminate cement foaming insulation board is obtained. In the present invention, the curing is preferably normal temperature curing; the temperature of the normal-temperature curing is preferably 20-25 ℃, and more preferably 22-23 ℃; the time for normal-temperature curing is preferably 7-14 d, and more preferably 10-14 d;
the invention is maintained under the condition of normal temperature, so that the foaming agent is decomposed at a slow and uniform speed, pores with uniform sizes are formed in the plate, and the heat insulation performance of the plate is improved.
After the sulphoaluminate cement foaming insulation board is obtained, the surface of the sulphoaluminate cement foaming insulation board is adhered with a mixture of preparation raw materials of a facing layer, and the sulphoaluminate cement assembled integrated inner wall is obtained after curing.
The invention has no special requirements on the forming mode of the mixture of the raw materials for preparing the veneer layer, and the components are directly mixed and stirred uniformly. The present invention does not require any particular means of attachment, as would be known to one skilled in the art.
In the present invention, the adhesive binder preferably includes an interfacial agent; the interfacial agent is preferably a cement paste, the cement paste preferably comprises cement and water, and the cement is preferably portland cement. In the invention, the water cement ratio of the cement paste is preferably 0.35-0.37, and more preferably 0.35. In the present invention, the cement paste is preferably prepared by mixing and stirring cement and water.
In the invention, the coating amount of the interface agent on the heat-insulating plate is preferably 18.5-20.3 g/m2More preferably 19.2 to 19.8g/m2More preferably 19.4 to 19.6g/m2. The means of applying the interfacial agent preferably comprises smearing, which may be, for example, manual smearing. After coating, the invention preferably dries the insulation board coated with the interface agent so as to coat the finishing coat. The invention has no special requirements on the drying mode, including drying or natural airing. In the embodiment of the present invention, the drying manner is preferably natural drying.
In the invention, the raw materials in the mixture of the facing layer preparation raw materials are the same as the components and the amounts of the facing layer preparation raw materials in the technical scheme, and the process is not repeated here.
Mixing the facing layer preparation raw materials to obtain desulfurized gypsum slurry; the setting time of the desulfurized gypsum slurry is preferably 50-75 min, and more preferably 55-60 min; the consistency of the desulfurized gypsum slurry is preferably 90-95 mm, and more preferably 92-94 mm.
The invention has no special requirements on the mixing mode of the raw materials for preparing the veneer layer, and all the components are uniformly mixed under the stirring condition.
In the invention, the mixture of the raw materials for preparing the sprayed facing layer is desulfurized gypsum slurry. In the invention, the thickness of the desulfurized gypsum slurry coated on one side of the slag wool board is preferably 10-15 mm, and more preferably 12-15 mm; the coating amount of the desulfurized gypsum slurry is preferably 6000-6500 g/m2More preferably 6200 to 6500g/m2(ii) a Further preferably 6500g/m2. In the present invention, the desulfurized gypsum slurry is preferably applied by spraying.
In the present invention, the coating method of the desulfurized gypsum slurry preferably comprises:
and enabling the desulfurized gypsum slurry to enter a spray gun through a conveying pipe and spraying out. In the invention, the moving direction of the spray gun is preferably from top to bottom, and the moving speed of the spray gun is preferably 30-60 cm/s, and more preferably 40-50 cm/s. After spraying, the sprayed desulfurized gypsum slurry layer is preferably leveled and calendered, wherein the leveling is preferably performed from bottom to top; the calendering is carried out by conventional technical means. After calendering, the heat-insulation board sprayed with the desulfurized gypsum layer is maintained, and the maintenance is preferably performed under the condition of natural ventilation. In the invention, the curing temperature is preferably 20-25 ℃, and more preferably 20 ℃; the humidity during curing is preferably 40-65%, more preferably 45-55%; the curing time is preferably 7-14 d, and more preferably 10-14 d.
For further illustration of the present invention, the sulphoaluminate cement fabricated integral interior wall provided by the present invention will be described in detail below with reference to the accompanying drawings and examples, which should not be construed as limiting the scope of the present invention.
Example 1
Preparing the insulation board: providing raw materials according to the components shown in the table 1, mixing sulphoaluminate cement, desulfurized ash, graphite powder and polypropylene fiber, adding 25 mass percent of hydrogen peroxide solution, polycarboxylate superplasticizer and a certain amount of water into the mixture, uniformly stirring, pouring into a mold, sealing by using a polyethylene film, and maintaining for 14 days at 25 ℃ to obtain the sulphoaluminate cement foaming insulation board.
Mixing 42.5-grade portland cement with water according to a ratio of 1:0.35 to obtain an interface agent, coating the interface agent on two opposite surfaces of the obtained sulphoaluminate cement foamed insulation board, and naturally drying to form a bonding layer.
Mixing CaSO4100 parts of desulfurized gypsum with the mass content of 90 percent, 15 parts of calcium synthetic polyamide, 2 parts of hydroxypropyl methylcellulose with the viscosity of 100000 Pa.s and 43 parts of water are mixed to obtain desulfurized gypsum slurry, and the desulfurized gypsum slurry is sprayed on the bonding layers on the two opposite sides of the heat-insulating board, and the spraying amount is 6500g/m2And naturally drying to form a decorative surface layer to obtain the sulphoaluminate cement assembled integrated inner wall, wherein the specific parameters are shown in table 2.
Examples 2 to 5
Preparing a sulphoaluminate cement foamed insulation board and a sulphoaluminate cement assembled integrated inner wall according to the method of the embodiment 1, wherein the difference is that the dosage of each component is different, and the specific reference is shown in table 1; wherein the foaming agent in example 3 is sodium a-olefin sulfonate, the water reducing agent is a lignin water reducing agent, the water reducing agent in example 4 is a mixture of the lignin water reducing agent and a polycarboxylate superplasticizer according to a mass ratio of 1:1, and the rest is the same as example 1.
Table 1 examples 1-5 raw material amounts and process parameters of sulphoaluminate cement foamed insulation board
TABLE 2 Thioaluminate cement fabricated integral interior wall construction thickness parameter (mm)
| Examples | Finishing layer | Heat insulation layer | Total thickness of |
| 1 | 15 | 50 | 65 |
| 2 | 14 | 50 | 64 |
| 3 | 14 | 48 | 62 |
| 4 | 13 | 49 | 62 |
| 5 | 15 | 45 | 60 |
Performance testing and results
The heat-conducting performance of the sulphoaluminate cement foamed insulation board obtained in the embodiment 1-5 is measured according to GB/T10294-2008 heat-insulating material steady-state thermal resistance and related characteristics;
testing the compression resistance of the sulphoaluminate cement foaming insulation board obtained in the embodiment 1-5 according to GB50107-2010 concrete strength test evaluation standard;
testing the sound insulation performance of the sulphoaluminate cement foaming insulation board obtained in the embodiment 1-5 according to GB/T19889.3-2005 building sound insulation measurement specification;
the impact resistance of the sulphoaluminate cement foamed insulation board obtained in the embodiment 1-5 is tested according to the GB 22631-;
the fire resistance of the sulphoaluminate cement foaming insulation board obtained in the embodiment 1-5 is tested according to a GB/T9978.1-2008 building material incombustibility test method, and the test result is shown in Table 3.
Table 3 Performance test results of the sulphoaluminate cement foamed insulation board obtained in embodiments 1-5
The test results in table 3 show that the sulphoaluminate cement foamed insulation board provided by the invention has a lower thermal conductivity coefficient, which indicates that the insulation performance of the board is better; in addition, the density of the sulphoaluminate cement foamed insulation board is low, which shows that the board has the advantage of light weight and is convenient to transport; the sulphoaluminate cement foamed insulation board has larger sound insulation amount and excellent sound insulation performance, and can reduce the indoor noise of buildings; the fireproof performance, the impact resistance and the compressive strength are excellent, and the safety performance of the sulphoaluminate cement foamed insulation board is further enhanced.
The density of the foam concrete thermal insulation material used at the present stage is generally 200kg/m3Compared with organic building heat-insulating materials, the organic building heat-insulating material has the defects of high density and poor heat-insulating performance, so that the organic building heat-insulating material cannot be effectively replaced for large-scale application. The invention takes sulphoaluminate cement and desulfurized fly ash as cementing materials to prepare the cement with the density lower than 200kg/m3The foam concrete heat-insulating material (low-density foam concrete heat-insulating material for short) not only reduces the production cost but also improves the durability of the product on the premise of reducing the density of the product and improving the heat-insulating property, and overcomes the defects of poor toughness and easy cracking by adding the polypropylene fiber. The organic building heat-insulating material has the advantages of non-inflammability, aging resistance, stable size and the like, has the advantages of low density and high heat-insulating property of the organic building heat-insulating material, can effectively replace the organic building heat-insulating material, and can be applied to heat insulation of new buildings and energy-saving reconstruction projects of old buildings.
Testing the water vapor transmission wet flow density of the obtained sulphoaluminate cement fabricated integrated interior wall according to the GB/T17146-2015 standard specification;
the environmental protection performance of the sulphoaluminate cement assembled integrated inner wall provided by the invention is evaluated according to GB/T35605-2017;
detecting the addition amount of solid waste in the sulphoaluminate cement fabricated integrated wall according to the regulation of GB/T32989-2016;
the frost resistance is represented by the maximum number of freeze-thaw cycles that can be borne by a slow cooling method, wherein the repeated freeze-thaw cycles are tested, and the maximum number of freeze-thaw cycles can simultaneously meet the requirements that the strength loss rate is not more than 25% and the quality loss rate is not more than 5%. The test results are shown in Table 4.
TABLE 4 Performance test results of the sulphoaluminate cement fabricated integrated interior walls obtained in examples 1 to 5
The test results in table 4 show that the solid waste doping amount in the sulphoaluminate cement fabricated integrated inner wall provided by the invention reaches 43%, and the utilization rate of waste is improved; the wall body can be recycled, so that the floor area and the treatment cost of the construction waste are reduced; and the heat-insulating wall has excellent frost resistance, softening coefficient and water-proof device penetration flow density, which shows that the wall has good water resistance.
According to the embodiment, the sulphoaluminate cement is prepared into the light foaming material, so that the overall thermal insulation performance, sound insulation performance, transportation and installation performance of the material are improved; in addition, the plate also has excellent performances of high strength and high temperature resistance, and meets the technical requirements of the building inner wall.
According to the sulphoaluminate cement assembled integrated inner wall, the decorative surface layer is formed by utilizing the desulfurized gypsum, the indoor humidity can be adjusted, and the sulphoaluminate cement assembled integrated inner wall has excellent fireproof performance and good decorative performance; and simultaneously realizes the utilization of solid wastes.
The invention combines the veneer layer and the sulphoaluminate cement foaming heat-preservation board together to form the sulphoaluminate cement assembled integrated inner wall, so that the overall comprehensive performance of the wall is more excellent, the compressive strength, the heat preservation and insulation capability, the noise isolation capability and the waterproof capability of the wall are improved, and the safety, the confidentiality, the heat preservation performance and the comfort of the building are comprehensively improved. In addition, the sulphoaluminate cement fabricated integrated interior wall provided by the invention can intensify the production of building materials, effectively improve the labor production efficiency, avoid environmental pollution, and eliminate the defects of large noise, much dust, much construction waste, serious environmental pollution and the like of the traditional cast-in-place construction operation.
Although the present invention has been described in detail with reference to the above embodiments, it is only a part of the embodiments of the present invention, not all of the embodiments, and other embodiments can be obtained without inventive step according to the embodiments, and the embodiments are within the scope of the present invention.
Claims (7)
1. A sulphoaluminate cement assembled integrated inner wall comprises a sulphoaluminate cement foaming insulation board and finishing coats bonded to two opposite surfaces of the sulphoaluminate cement foaming insulation board;
the preparation raw materials of the sulphoaluminate cement foaming insulation board comprise the following components in parts by mass: 69-81 parts of sulphoaluminate cement, 23-27 parts of desulfurized ash, 3.7-7.2 parts of foaming agent, 0.6-1.4 parts of water reducing agent, 0.5-1.4 parts of graphite powder, 0.1-0.3 part of polypropylene fiber and 40-49 parts of water;
the preparation raw material of the facing layer comprises desulfurized gypsum;
the thickness of the sulphoaluminate cement foaming insulation board is 45-50 mm;
the thermal conductivity coefficient of the sulphoaluminate cement assembled integrated inner wall is 0.033-0.035W/(m.k), and the compressive strength reaches 0.7-1.0 MPa.
2. The sulphoaluminate cement fabricated integral interior wall of claim 1, wherein the foaming agent comprises hydrogen peroxide or sodium a-olefin sulfonate;
the water reducing agent comprises a lignin water reducing agent or a polycarboxylate high-efficiency water reducing agent;
the desulfurization ash comprises the following components in percentage by mass: SiO 2241.87～42.51％、Al2O325.37～26.43％、CaO10.42～11.56％、SO35.47～6.35％。
3. The sulphoaluminate cement fabricated integral interior wall of claim 1 or claim 2, wherein the veneer layer independently has a thickness of 10 to 15mm across.
4. The sulphoaluminate cement fabricated integral interior wall of claim 1, wherein the facing layer is prepared from raw materials comprising desulfurized gypsum, retarder, water retaining agent and water;
the mass ratio of the desulfurized gypsum to the water is 1 (0.40-0.45);
the mass of the retarder is 0.015-0.03% of that of the desulfurized gypsum;
the mass of the water-retaining agent is 0.10-0.20% of that of the desulfurized gypsum.
5. The sulphoaluminate cement fabricated integral interior wall of claim 1, wherein the insulation board and the facing layer are bonded by an interface agent, the composition of the interface agent comprising a cement paste.
6. A method for preparing a sulphoaluminate cement fabricated integral interior wall as defined in any one of claims 1 to 5, comprising the steps of:
(1) mixing sulphoaluminate cement, desulfurized fly ash, graphite powder and polypropylene fiber to obtain an admixture;
(2) mixing a foaming agent and a water reducing agent with the admixture in the step (1), and then adding water to obtain a casting material;
(3) sequentially pouring and maintaining the pouring material obtained in the step (2) to obtain a sulphoaluminate cement foaming insulation board;
(4) and (4) adhering a mixture of raw materials to the surface of the sulphoaluminate cement foaming insulation board obtained in the step (3) to form a facing layer, and curing to obtain the sulphoaluminate cement assembled integrated inner wall.
7. The method according to claim 6, wherein the curing in the step (3) is normal temperature curing, the temperature of the normal temperature curing is 20 to 25 ℃, and the time of the normal temperature curing is 7 to 14 days.
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