Cement gypsum composite self-insulation formwork with facing layer and wall

Abstract

This invention discloses a cement-gypsum composite self-insulating formwork and wall with a decorative layer, comprising an inner formwork and an outer formwork. The inner and outer formworks can be combined to form a complete shell, and the complete shell has a vertically penetrating perforated structure. The outer formwork includes an outer decorative layer, an outer insulation layer, and a reinforcing layer located between the outer decorative layer and the outer insulation layer. The inner formwork includes a gypsum surface layer, an inner insulation layer, and a supporting layer located between the gypsum surface layer and the inner insulation layer. When the inner and outer formworks are combined, the inner insulation layer adheres to the outer insulation layer. Walls constructed using the cement-gypsum composite self-insulating formwork with a decorative layer of this invention have the advantages of a smooth outer surface, excellent self-insulation and flame-retardant properties. Only grouting of the inner and outer walls is required; secondary insulation and exterior wall painting are unnecessary, thus saving construction costs, shortening the construction period, simplifying construction, and being energy-saving and environmentally friendly. It is particularly suitable for rural houses with three stories or less.

Description

Technical Field

[0001] This invention relates to the field of building materials technology, and in particular to a cement-gypsum composite self-insulating mold shell and wall with a decorative layer. Background Technology

[0002] With the improvement of people's living standards and the strengthening of environmental awareness, people are increasingly favoring environmentally friendly wall materials for building construction. At the same time, the country is vigorously promoting green environmental protection and energy conservation and emission reduction policies, resulting in the emergence of many heat-insulating and energy-saving wall materials in the construction industry.

[0003] Currently, many passive energy-saving houses require secondary insulation for their wall materials, which is time-consuming and labor-intensive. Some self-insulating wall materials require exterior wall decoration or painting, which not only increases costs but also leads to longer construction periods and low construction efficiency. In addition, a single insulation effect cannot achieve the function of moisture retention. Summary of the Invention

[0004] In view of the above problems, the purpose of this invention is to provide a cement-plaster composite self-insulating mold shell with a decorative layer, including an inner mold shell and an outer mold shell, which can be combined to form a whole shell, and the whole shell has a hollow structure running through it in the vertical direction.

[0005] The outer mold shell includes an outer surface layer, an outer insulation layer, and a reinforcing layer located between the outer surface layer and the outer insulation layer;

[0006] The inner mold shell includes a plaster surface layer, an inner insulation layer, and a support layer located between the plaster surface layer and the inner insulation layer.

[0007] When the inner and outer mold shells are put together, the inner insulation layer adheres to the outer insulation layer.

[0008] In the technical solution of the present invention, the inner mold shell and the outer mold shell can be combined to form the whole mold shell (integrated shell) when making the self-insulating mold shell, or the inner mold shell and the outer mold shell can be bonded together to form an integral mold shell during construction and masonry, and the integral shell can be stacked to form a wall. The hollow structure can insert supporting components such as steel bars. The hollow structure can be formed by the inner mold shell or the outer mold shell alone. More preferably, the hollow structure is formed by splicing the inner mold shell and the outer mold shell together. For example, the inner mold shell has a semi-circular structure, the outer mold shell has a semi-circular structure, and the two are spliced ​​together to form a circular hollow structure.

[0009] In some embodiments, the entire shell is provided with a perforated structure in the horizontal direction to allow for the insertion of supporting members such as reinforcing bars.

[0010] In some embodiments, the cement-gypsum composite self-insulating mold shell with a decorative layer further includes an adhesive layer, which connects and fixes the inner mold shell and the outer mold shell, thereby stably bonding and fixing the inner mold shell and the outer mold shell to form a whole shell.

[0011] In some embodiments, the raw materials for preparing the exterior finishing layer, by weight, include: 16-18 parts white cement, 2-4 parts anhydrous gypsum, 3-5 parts high-alumina cement, 0.1-0.2 parts water-reducing agent, 1-2 parts kaolin, 0.1-0.2 parts cellulose ether, 50-80 parts quartz sand, and 0.5-10 parts inorganic pigment.

[0012] In some embodiments, the raw materials for preparing the reinforcing layer, by weight, include: 35-40 parts cement, 4-6 parts fly ash, 5-15 parts slag, 0.1-0.3 parts cellulose ether, 0.1-0.15 parts water-reducing agent, 0.15-0.2 parts redispersible polymer powder, and 0.15-0.3 parts short fiber.

[0013] In some embodiments, the raw materials for preparing the external insulation layer, by weight, include: 75-80 parts cement, 4-6 parts fly ash, 8-12 parts stone powder, 5-7 parts polystyrene particles, 0.2-0.5 parts short fiber, 0.2-0.5 parts foam stabilizer, 0.15-0.25 parts water-reducing agent, and 0.5-10 parts foaming agent.

[0014] In some embodiments, the raw materials for preparing the inner insulation layer, by weight, include: 75-80 parts cement, 4-6 parts fly ash, 8-12 parts stone powder, 5-7 parts polystyrene particles, 0.2-0.5 parts short fiber, 0.2-0.5 parts foam stabilizer, 0.15-0.25 parts water-reducing agent, and 0.5-10 parts foaming agent.

[0015] In some embodiments, the short fibers may be basalt fibers of 5-8 mm.

[0016] In some embodiments, the raw materials for preparing the gypsum surface layer, by weight, include: 70-80 parts of natural gypsum, 10-15 parts of heavy calcium carbonate powder, 10-15 parts of white cement, 0.15-0.2 parts of methylcellulose, 2-5 parts of polyvinyl alcohol, 0.15-0.2 parts of water-reducing agent, and 0.15-0.2 parts of retarder.

[0017] In some embodiments, the raw materials for preparing the support layer, by weight, include: 60-70 parts of desulfurized gypsum, 10-15 parts of perlite, 1.5-2 parts of polyvinyl alcohol, 8-10 parts of cement, 8-10 parts of slag powder, 0.15-0.2 parts of water-reducing agent, and 0.15-0.2 parts of retarder.

[0018] In some embodiments, the raw materials for preparing the adhesive layer, by weight, include: 75-80 parts cement, 3-3.5 parts adhesive powder, 2-2.5 parts cellulose, 2-2.5 parts water-reducing agent, 12-15 parts anhydrous gypsum, and 8-10 parts quick-setting agent.

[0019] In some embodiments, the short fibers may be basalt fibers of 5-8 mm.

[0020] In some embodiments, the water-reducing agent is a melamine water-reducing agent.

[0021] Accordingly, the present invention also provides a wall, comprising the aforementioned cement-plaster composite self-insulating mold with a decorative layer. Several self-insulating molds are then used to construct the wall. Only grouting of the inner and outer walls is required; secondary insulation and exterior wall painting are unnecessary, thus saving construction costs and shortening the construction period. It offers excellent thermal insulation and energy saving, is easy to construct, and is particularly suitable for rural houses of three stories or less.

[0022] The beneficial effects of this invention are:

[0023] (1) The inner mold shell of the present invention has a gypsum surface layer and the outer mold shell has an outer decorative surface layer, which eliminates the exterior wall painting project and the interior wall scraping and leveling project, thereby saving construction costs and shortening the construction cycle.

[0024] (2) The inner mold shell of the present invention has a gypsum surface layer, and the gypsum material has the function of regulating indoor air humidity;

[0025] (3) The inner mold shell has an inner insulation layer and the outer mold shell has an outer insulation layer, forming a wall with self-insulating function, without the need for secondary insulation;

[0026] (4) The inner and outer insulation layers are composed of polystyrene particles and cement foam, which have a good flame retardant effect. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the cement-plaster composite self-insulating mold shell with decorative layer of the present invention.

[0028] Figure 2 This is a schematic diagram of the structure of the inner mold shell of the present invention.

[0029] Figure 3 This is a schematic diagram of the structure of the outer mold shell of the present invention. Detailed Implementation

[0030] The following will describe the concept and technical effects of the present invention clearly and completely with reference to embodiments, so as to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the scope of protection of the present invention.

[0031] Please refer to Figures 1-3 The cement-gypsum composite self-insulating mold shell with a decorative layer of the present invention includes an inner mold shell 10 and an outer mold shell 30. The inner mold shell 10 and the outer mold shell 30 can be combined to form a whole shell, and the whole shell is provided with a hollow structure 50 in the vertical direction. The outer mold shell 30 includes an outer decorative layer 31, an outer insulation layer 33 and a reinforcing layer 35 located between the outer decorative layer 31 and the outer insulation layer 33. The exterior finishing layer 31 serves a decorative purpose and is very smooth, thus eliminating the need for exterior wall decoration. The exterior insulation layer 33 provides insulation, and the reinforcing layer 35 provides support, enhancing the strength of the mold shell. The inner mold shell 10 includes a plaster surface layer 11, an inner insulation layer 13, and a supporting layer 15 located between the plaster surface layer 11 and the inner insulation layer 13. The plaster surface layer 11 contains plaster, which provides moisture retention and regulates indoor humidity. The inner insulation layer 13 provides insulation and, in conjunction with the outer insulation layer 33, is positioned at the midpoint of strength, offering good self-insulation. The supporting layer 15 provides support, enhancing the strength of the mold shell. When the inner mold shell 10 and the outer mold shell 30 are joined, the inner insulation layer 13 adheres to the outer insulation layer 33.

[0032] The self-insulating mold shell of the present invention is further illustrated below through specific embodiments:

[0033] Example 1

[0034] A cement-plaster composite self-insulating mold shell with a decorative layer includes an inner mold shell 10 and an outer mold shell 30. The inner mold shell 10 and the outer mold shell 30 can be combined to form a whole shell, and the whole shell has a hollow structure 50 running through it in the vertical direction.

[0035] The outer mold shell 30 includes an outer surface layer 31, an outer insulation layer 33, and a reinforcing layer 35 located between the outer surface layer 31 and the outer insulation layer 33;

[0036] The inner mold shell 10 includes a plaster surface layer 11, an inner insulation layer 13, and a support layer 15 located between the plaster surface layer 11 and the inner insulation layer 13.

[0037] When the inner mold shell 10 and the outer mold shell 30 are put together, the inner insulation layer 13 adheres to the outer insulation layer 33.

[0038] 1.1 The outer mold shell is prepared as follows:

[0039] The raw materials for preparing the exterior finishing layer 31 include, by weight, 17 parts white cement, 3 parts anhydrous gypsum, 4 parts high-alumina cement, 0.15 parts water-reducing agent, 1.5 parts kaolin, 0.15 parts cellulose ether, 75 parts quartz sand, and 2 parts titanium dioxide.

[0040] The raw materials for preparing the reinforcing layer 35, by weight, include: 35 parts ordinary Portland cement, 5 parts fly ash, 10 parts slag, 0.3 parts cellulose ether, 0.12 parts water-reducing agent, 0.2 parts redispersible polymer powder, and 0.3 parts short fiber;

[0041] The raw materials for preparing the external insulation layer 33, by weight, include: 78 parts ordinary Portland cement, 5 parts fly ash, 10 parts stone powder, 6 parts polystyrene particles, 0.2 parts short fiber, 0.2 parts foam stabilizer, 0.15 parts water-reducing agent, and 4 parts foaming agent;

[0042] After the raw materials for preparing the outer surface layer 31 are stirred evenly, water is added and stirred evenly, and then poured into the bottom of the mold to form the outer surface layer 31.

[0043] After the raw materials for preparing the reinforcing layer 35 are stirred evenly, water is added and stirred evenly, and then poured onto the outer surface layer 31 in the mold to form the reinforcing layer 35.

[0044] After the raw materials for the preparation of the outer insulation layer 33 are uniform, water is added and stirred evenly, and then poured onto the reinforcing layer 35 in the mold to form the outer insulation layer 33.

[0045] 1.2 The preparation of the inner mold shell is as follows:

[0046] The raw materials for preparing the gypsum surface layer 11 include, by weight parts: 70 parts natural gypsum, 13 parts heavy calcium carbonate powder, 15 parts white cement, 0.15 parts methylcellulose, 2.5 parts polyvinyl alcohol, 0.2 parts water-reducing agent, and 0.15 parts retarder;

[0047] The raw materials for preparing the support layer 15, by weight, include: 70 parts desulfurized gypsum, 10 parts perlite, 1.5 parts polyvinyl alcohol, 8 parts cement, 10 parts slag powder, 0.15 parts water-reducing agent, and 0.2 parts retarder.

[0048] The raw materials for preparing the inner insulation layer 13, by weight, include: 78 parts ordinary Portland cement, 5 parts fly ash, 10 parts stone powder, 6 parts polystyrene particles, 0.2 parts short fiber, 0.2 parts foam stabilizer, 0.15 parts water-reducing agent, and 4 parts foaming agent.

[0049] After the raw materials for preparing the gypsum surface layer 11 are stirred evenly, water is added and stirred evenly, and then poured into the bottom of the mold to form the gypsum surface layer 11.

[0050] After the raw materials for preparing the support layer 15 are stirred evenly, water is added and stirred evenly, and then poured onto the gypsum surface layer 11 in the mold to form the support layer 15.

[0051] After the raw materials for preparing the inner insulation layer 13 are uniform, water is added and stirred evenly, and then poured onto the support layer 15 in the mold to form the inner insulation layer 13.

[0052] 1.3 Preparation of whole shell

[0053] The raw materials for preparing the adhesive layer include, by weight, 75 parts cement, 3 parts adhesive powder, 2 parts cellulose, 2 parts water-reducing agent, 15 parts anhydrous gypsum, and 8 parts quick-setting agent. The raw materials are mixed evenly. During construction, the evenly mixed mixture is used to bond and fix the inner mold shell 10 and the outer mold shell 30 to obtain a complete shell.

[0054] Example 2

[0055] A cement-plaster composite self-insulating mold shell with a decorative layer includes an inner mold shell 10 and an outer mold shell 30. The inner mold shell 10 and the outer mold shell 30 can be combined to form a whole shell, and the whole shell has a hollow structure 50 running through it in the vertical direction.

[0056] The outer mold shell 30 includes an outer surface layer 31, an outer insulation layer 33, and a reinforcing layer 35 located between the outer surface layer 31 and the outer insulation layer 33;

[0057] The inner mold shell 10 includes a plaster surface layer 11, an inner insulation layer 13, and a support layer 15 located between the plaster surface layer 11 and the inner insulation layer 13.

[0058] When the inner mold shell 10 and the outer mold shell 30 are put together, the inner insulation layer 13 adheres to the outer insulation layer 33.

[0059] 1.1 The outer mold shell is prepared as follows:

[0060] The raw materials for preparing the exterior finishing layer 31 include, by weight, 16 parts white cement, 2 parts anhydrous gypsum, 5 parts high-alumina cement, 0.2 parts water-reducing agent, 1.5 parts kaolin, 0.1 parts cellulose ether, 60 parts quartz sand, and 4 parts iron oxide inorganic pigment.

[0061] The raw materials for preparing the reinforcing layer 35, by weight, include: 40 parts ordinary Portland cement, 4 parts fly ash, 12 parts slag, 0.2 parts cellulose ether, 0.15 parts water-reducing agent, 0.15 parts redispersible polymer powder, and 0.2 parts short fiber;

[0062] The raw materials for preparing the external insulation layer 33, by weight, include: 75 parts ordinary Portland cement, 4 parts fly ash, 9 parts stone powder, 7 parts polystyrene particles, 0.4 parts short fiber, 0.3 parts foam stabilizer, 0.2 parts water-reducing agent, and 3 parts foaming agent;

[0063] After the raw materials for preparing the outer surface layer 31 are stirred evenly, water is added and stirred evenly, and then poured into the bottom of the mold to form the outer surface layer 31.

[0064] After the raw materials for preparing the reinforcing layer 35 are stirred evenly, water is added and stirred evenly, and then poured onto the outer surface layer 31 in the mold to form the reinforcing layer 35.

[0065] After the raw materials for the preparation of the outer insulation layer 33 are uniform, water is added and stirred evenly, and then poured onto the reinforcing layer 35 in the mold to form the outer insulation layer 33.

[0066] 1.2 The preparation of the inner mold shell is as follows:

[0067] The raw materials for preparing the gypsum surface layer 11 include, by weight parts: 75 parts natural gypsum, 10 parts heavy calcium carbonate powder, 12 parts white cement, 0.2 parts methylcellulose, 3 parts polyvinyl alcohol, 0.15 parts water-reducing agent, and 0.18 parts retarder;

[0068] The raw materials for preparing the support layer 15, by weight, include: 65 parts desulfurized gypsum, 12 parts perlite, 2 parts polyvinyl alcohol, 9 parts cement, 10 parts slag powder, 0.2 parts water-reducing agent, and 0.15 parts retarder.

[0069] The raw materials for preparing the inner insulation layer 13, by weight, include: 80 parts of ordinary Portland cement, 4 parts of fly ash, 12 parts of stone powder, 5 parts of polystyrene particles, 0.2 parts of short fiber, 0.4 parts of foam stabilizer, 0.2 parts of water-reducing agent, and 5 parts of foaming agent;

[0070] After the raw materials for preparing the gypsum surface layer 11 are stirred evenly, water is added and stirred evenly, and then poured into the bottom of the mold to form the gypsum surface layer 11.

[0071] After the raw materials for preparing the support layer 15 are stirred evenly, water is added and stirred evenly, and then poured onto the gypsum surface layer 11 in the mold to form the support layer 15.

[0072] After the raw materials for preparing the inner insulation layer 13 are uniform, water is added and stirred evenly, and then poured onto the support layer 15 in the mold to form the inner insulation layer 13.

[0073] 1.3 Preparation of whole shell

[0074] The raw materials for preparing the adhesive layer, by weight, include: 80 parts cement, 3.5 parts adhesive powder, 2.5 parts cellulose, 2 parts water-reducing agent, 12 parts anhydrous gypsum, and 9 parts quick-setting agent.

[0075] The raw materials for preparing the adhesive layer are stirred evenly, and then water is added and stirred evenly. When construction is carried out, the evenly stirred mixture is used to bond and fix the inner mold shell 10 and the outer mold shell 30 to obtain the whole shell.

[0076] Example 3

[0077] A cement-plaster composite self-insulating mold shell with a decorative layer includes an inner mold shell 10 and an outer mold shell 30. The inner mold shell 10 and the outer mold shell 30 can be combined to form a whole shell, and the whole shell has a hollow structure 50 running through it in the vertical direction.

[0078] The outer mold shell 30 includes an outer surface layer 31, an outer insulation layer 33, and a reinforcing layer 35 located between the outer surface layer 31 and the outer insulation layer 33;

[0079] The inner mold shell 10 includes a plaster surface layer 11, an inner insulation layer 13, and a support layer 15 located between the plaster surface layer 11 and the inner insulation layer 13.

[0080] When the inner mold shell 10 and the outer mold shell 30 are put together, the inner insulation layer 13 adheres to the outer insulation layer 33.

[0081] 1.1 The outer mold shell is prepared as follows:

[0082] The raw materials for preparing the exterior finishing layer 31 include, by weight parts: 18 parts white cement, 4 parts anhydrous gypsum, 3 parts high-alumina cement, 0.1 parts water-reducing agent, 2 parts kaolin, 0.2 parts cellulose ether, 70 parts quartz sand, and 4 parts titanium dioxide.

[0083] The raw materials for preparing the reinforcing layer 35, by weight, include: 38 parts ordinary Portland cement, 4 parts fly ash, 6 parts slag, 0.2 parts cellulose ether, 0.15 parts water-reducing agent, 0.15 parts redispersible polymer powder, and 0.2 parts short fiber;

[0084] The raw materials for preparing the external insulation layer 33, by weight, include: 80 parts of ordinary Portland cement, 4 parts of fly ash, 8 parts of stone powder, 5 parts of polystyrene particles, 0.5 parts of short fiber, 0.4 parts of foam stabilizer, 0.15 parts of water-reducing agent, and 4 parts of foaming agent.

[0085] After the raw materials for preparing the outer surface layer 31 are stirred evenly, water is added and stirred evenly, and then poured into the bottom of the mold to form the outer surface layer 31.

[0086] After the raw materials for preparing the reinforcing layer 35 are stirred evenly, water is added and stirred evenly, and then poured onto the outer surface layer 31 in the mold to form the reinforcing layer 35.

[0087] After the raw materials for the preparation of the outer insulation layer 33 are uniform, water is added and stirred evenly, and then poured onto the reinforcing layer 35 in the mold to form the outer insulation layer 33.

[0088] 1.2 The preparation of the inner mold shell is as follows:

[0089] The raw materials for preparing the gypsum surface layer 11 include, by weight parts: 75 parts natural gypsum, 15 parts heavy calcium carbonate powder, 10 parts white cement, 0.2 parts methylcellulose, 4 parts polyvinyl alcohol, 0.2 parts water-reducing agent, and 0.15 parts retarder;

[0090] The raw materials for preparing the support layer 15, by weight, include: 65 parts desulfurized gypsum, 12 parts perlite, 2 parts polyvinyl alcohol, 10 parts cement, 8 parts slag powder, 0.15 parts water-reducing agent, and 0.2 parts retarder.

[0091] The raw materials for preparing the inner insulation layer 13, by weight, include: 76 parts of ordinary Portland cement, 4 parts of fly ash, 8 parts of stone powder, 7 parts of polystyrene particles, 0.4 parts of short fiber, 0.2 parts of foam stabilizer, 0.15 parts of water-reducing agent, and 4 parts of foaming agent.

[0092] After the raw materials for preparing the gypsum surface layer 11 are stirred evenly, water is added and stirred evenly, and then poured into the bottom of the mold to form the gypsum surface layer 11.

[0093] After the raw materials for preparing the support layer 15 are stirred evenly, water is added and stirred evenly, and then poured onto the gypsum surface layer 11 in the mold to form the support layer 15.

[0094] After the raw materials for preparing the inner insulation layer 13 are uniform, water is added and stirred evenly, and then poured onto the support layer 15 in the mold to form the inner insulation layer 13.

[0095] 1.3 Preparation of whole shell

[0096] The raw materials for preparing the adhesive layer include, by weight, 80 parts cement, 3.5 parts adhesive powder, 2.2 parts cellulose, 2.5 parts water-reducing agent, 14 parts anhydrous gypsum, and 10 parts quick-setting agent. The raw materials are mixed evenly. During construction, the evenly mixed mixture is used to bond and fix the inner mold shell 10 and the outer mold shell 30 to obtain a complete shell.

[0097] Example 4

[0098] A cement-plaster composite self-insulating mold shell with a decorative layer includes an inner mold shell 10 and an outer mold shell 30. The inner mold shell 10 and the outer mold shell 30 can be combined to form a whole shell, and the whole shell has a hollow structure 50 through it in the vertical direction.

[0099] The outer mold shell 30 includes an outer surface layer 31, an outer insulation layer 33, and a reinforcing layer 35 located between the outer surface layer 31 and the outer insulation layer 33;

[0100] The inner mold shell 10 includes a plaster surface layer 11, an inner insulation layer 13, and a support layer 15 located between the plaster surface layer 11 and the inner insulation layer 13.

[0101] When the inner mold shell 10 and the outer mold shell 30 are put together, the inner insulation layer 13 adheres to the outer insulation layer 33.

[0102] 1.1 The outer mold shell is prepared as follows:

[0103] The raw materials for preparing the exterior finishing layer 31 include, by weight parts: 18 parts white cement, 2 parts anhydrous gypsum, 3 parts high-alumina cement, 0.2 parts water-reducing agent, 2 parts kaolin, 0.1 parts cellulose ether, 60 parts quartz sand, and 8 parts titanium dioxide.

[0104] The raw materials for preparing the reinforcing layer 35, by weight, include: 38 parts ordinary Portland cement, 4 parts fly ash, 12 parts slag, 0.2 parts cellulose ether, 0.12 parts water-reducing agent, 0.2 parts redispersible polymer powder, and 0.3 parts short fiber;

[0105] The raw materials for preparing the external insulation layer 33, by weight, include: 75 parts ordinary Portland cement, 6 parts fly ash, 12 parts stone powder, 7 parts polystyrene particles, 0.3 parts short fiber, 0.2 parts foam stabilizer, 0.15 parts water-reducing agent, and 4 parts foaming agent;

[0106] After the raw materials for preparing the outer surface layer 31 are stirred evenly, water is added and stirred evenly, and then poured into the bottom of the mold to form the outer surface layer 31.

[0107] After the raw materials for preparing the reinforcing layer 35 are stirred evenly, water is added and stirred evenly, and then poured onto the outer surface layer 31 in the mold to form the reinforcing layer 35.

[0108] After the raw materials for the preparation of the outer insulation layer 33 are uniform, water is added and stirred evenly, and then poured onto the reinforcing layer 35 in the mold to form the outer insulation layer 33.

[0109] 1.2 The preparation of the inner mold shell is as follows:

[0110] The raw materials for preparing the gypsum surface layer 11 include, by weight parts: 75 parts natural gypsum, 15 parts heavy calcium carbonate powder, 10 parts white cement, 0.2 parts methylcellulose, 2.2 parts polyvinyl alcohol, 0.15 parts water-reducing agent, and 0.2 parts retarder;

[0111] The raw materials for preparing the support layer 15, by weight, include: 65 parts desulfurized gypsum, 15 parts perlite, 2 parts polyvinyl alcohol, 10 parts cement, 10 parts slag powder, 0.15 parts water-reducing agent, and 0.2 parts retarder.

[0112] The raw materials for preparing the inner insulation layer 13, by weight, include: 80 parts of ordinary Portland cement, 4 parts of fly ash, 8 parts of stone powder, 5 parts of polystyrene particles, 0.5 parts of short fiber, 0.2 parts of foam stabilizer, 0.15 parts of water-reducing agent, and 4 parts of foaming agent.

[0113] After the raw materials for preparing the gypsum surface layer 11 are stirred evenly, water is added and stirred evenly, and then poured into the bottom of the mold to form the gypsum surface layer 11.

[0114] After the raw materials for preparing the support layer 15 are stirred evenly, water is added and stirred evenly, and then poured onto the gypsum surface layer 11 in the mold to form the support layer 15.

[0115] After the raw materials for preparing the inner insulation layer 13 are uniform, water is added and stirred evenly, and then poured onto the support layer 15 in the mold to form the inner insulation layer 13.

[0116] 1.3 Preparation of whole shell

[0117] The raw materials for preparing the adhesive layer include, by weight, 78 parts cement, 3.5 parts adhesive powder, 2.5 parts cellulose, 2.5 parts water-reducing agent, 12 parts anhydrous gypsum, and 10 parts quick-setting agent. The raw materials are mixed evenly. During construction, the evenly mixed mixture is used to bond and fix the inner mold shell 10 and the outer mold shell 30 to obtain a complete shell.

[0118] The wall constructed using the cement-gypsum composite self-insulating mold shell with decorative layer of the present invention has the advantages of smooth outer surface, excellent self-insulation and flame retardant properties. Only grouting treatment is required for the inner and outer walls, without the need for secondary insulation or exterior wall painting, thereby saving construction costs, shortening the construction period, and making construction simple, energy-saving and environmentally friendly. It is especially suitable for building houses with three floors or less in rural areas.

[0119] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, it is not limited to those listed in the embodiments. Those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A cement gypsum composite self-insulating formwork with a facing layer, characterized in that, The inner mold shell and the outer mold shell are combined to form a whole shell, and the whole shell is provided with a hollow structure in the vertical direction, The outer mold shell comprises an outer facing layer, an outer thermal insulation layer and a reinforcing layer between the outer facing layer and the outer thermal insulation layer, the preparation raw materials of the outer facing layer comprise, in parts by weight, 16-18 parts of white cement, 2-4 parts of anhydrous gypsum, 3-5 parts of high-aluminum cement, 0.1-0.2 parts of water reducing agent, 1-2 parts of kaolin, 0.1-0.2 parts of cellulose ether, 50-80 parts of quartz sand and 0.5-10 parts of inorganic pigment, the preparation raw materials of the reinforcing layer comprise, in parts by weight, 35-40 parts of cement, 4-6 parts of fly ash, 5-15 parts of slag, 0.1-0.3 parts of cellulose ether, 0.1-0.15 parts of water reducing agent, 0.15-0.2 parts of redispersible glue powder and 0.15-0.3 parts of short fiber; The inner mold shell comprises a gypsum facing layer, an inner thermal insulation layer and a support layer between the gypsum facing layer and the inner thermal insulation layer, the preparation raw materials of the gypsum facing layer comprise, in parts by weight, 70-80 parts of natural gypsum, 10-15 parts of heavy calcium powder, 10-15 parts of white cement, 0.15-0.2 parts of methyl cellulose, 2-5 parts of polyvinyl alcohol, 0.15-0.2 parts of water reducing agent and 0.15-0.2 parts of retarder, the preparation raw materials of the support layer comprise, in parts by weight, 60-70 parts of desulfurization gypsum, 10-15 parts of perlite, 1.5-2 parts of polyvinyl alcohol, 8-10 parts of cement, 8-10 parts of slag powder, 0.15-0.2 parts of water reducing agent and 0.15-0.2 parts of retarder, When the inner mold shell and the outer mold shell are combined, the inner thermal insulation layer is attached to the outer thermal insulation layer, Further comprising a bonding layer for connecting and fixing the inner mold shell and the outer mold shell.

2. The cementitious gypsum composite self-insulating formwork lined with a facing layer according to claim 1, characterized in that, The preparation raw materials of the outer thermal insulation layer comprise, in parts by weight, 75-80 parts of cement, 4-6 parts of fly ash, 8-12 parts of stone powder, 5-7 parts of polystyrene particles, 0.2-0.5 parts of short fiber, 0.2-0.5 parts of foam stabilizer, 0.15-0.25 parts of water reducing agent and 0.5-10 parts of foaming agent.

3. The cementitious gypsum composite self-insulating formwork lined with a facing layer according to claim 1, characterized in that, The preparation raw materials of the inner thermal insulation layer comprise, in parts by weight, 75-80 parts of cement, 4-6 parts of fly ash, 8-12 parts of stone powder, 5-7 parts of polystyrene particles, 0.2-0.5 parts of short fiber, 0.2-0.5 parts of foam stabilizer, 0.15-0.25 parts of water reducing agent and 0.5-10 parts of foaming agent.

4. The cementitious gypsum composite self-insulating formwork lined with a facing layer according to claim 2, characterized in that, The preparation raw materials of the bonding layer comprise, in parts by weight, 75-80 parts of cement, 3-3.5 parts of glue powder, 2-2.5 parts of cellulose, 2-2.5 parts of water reducing agent, 12-15 parts of anhydrous gypsum and 8-10 parts of quick-setting agent.

5. A wall body characterized by, The cement gypsum composite self-insulation mold shell with a facing layer comprises the cement gypsum composite self-insulation mold shell according to any one of claims 1-4.

Images