Building board is another kind of important new wall material besides wall brick and block. Because of its light weight, fast installation and high construction efficiency, it can increase the use area of building, improve the seismic performance, save production and use energy consumption, etc. with the implementation of building energy conservation engineering and wall material innovation project, new building plate will get rapid development.

Classification:

① According to the "terminology of wall materials" (GB / t18968-2003), the main types are large wall panel, strip board and thin plate.

Strip: refers to the vertical or horizontal assembly on the keel or frame as the wall of the long strip plate;

Large panel: refers to the wall panel with structural reinforcement whose size is equivalent to the width of the whole room (or depth) and the height of the whole floor.

② According to the constituent materials: fiber cement board, building gypsum board, calcium silicate board, light concrete board, wood and plant fiber cement board, steel wire mesh cement sandwich board, metal surface sandwich board, reinforced concrete thermal insulation material composite external wall panel, plant fiber board, prestressed concrete wall board and external insulation board.

③ According to the structure, it can be divided into hanging board, hollow wall panel, hollow strip, light wall panel, partition board, composite wall panel, sandwich panel, core board, internal thermal insulation board of external wall, external insulation board of external wall, etc.

Fiber cement board is a kind of board made of cement as binder, adding fiber material in proportion, through pulping, forming, curing and other processes.

Classification:

① According to the type of cement: ordinary cement and low alkalinity cement fiber cement board;

② According to the apparent density: high density board (pressure board), medium density board (without pressure plate), light board (including light aggregate board).

Common varieties: NTK board, NAFC board, nal board, VRC board, etc

(1) Fiber reinforced low alkalinity cement building slab (NTK)

It is a building slab reinforced with alkali resistant glass fiber, low alkalinity sulphoaluminate cement as binder, prepared by pulping, papermaking or flowing slurry, and steam curing.

Ø requirements: according to JC / T 626-2008, cement grade ≮ 42.5, diameter of about 15 μ m, length of 15-25mm, short cut alkali resistant glass fiber.

Specifications: length: 1200, 1800, 2400, 2800 mm, width: 800, 900, 1200 mm, thickness: 4, 5, 6 mm.

Ø appearance: excellent (a), first class (b) and qualified (c).

(2) Vinylon fiber reinforced cement plate (vfrc board)

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Ø requirements: vfrc flat plates shall comply with JC / T 671-2008 standard, and be divided into two types according to their density: vinylon fiber reinforced cement board (type a board) and cement light board (type B board).

Specifications: length: 1800, 2400, 3000mm, width: 900, 1200mm, thickness: 4, 6, 8, 10, 15, 20, 25mm.

Application: type a board is used for non load bearing wall, ceiling and ventilation duct, while type B plate is used for internal partition wall and ceiling.

(3) Fiber cement board by vacuum extrusion

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Ø embossed solid board for external wall: there is no hole in the section of the board, and the surface has concave convex pattern and coating layer, which is mainly used as the external wall panel.

Ø perforated board for external wall: the cross section of the board has rectangular holes, and the surface has concave convex pattern and coating layer, which is used as external wall panel.

Ø perforated plate for interior wall: the cross section of the board has rectangular holes, and the surface has no concave convex pattern. It can be used as partition wall with or without coating layer.

A variety of special-shaped parts: such as counter plate, corner, etc.

(4) Fiber cement board composite wall material

Ø is a light wall material made of fiber cement board as surface layer, prefabricated and cast-in-place, and other thermal insulation materials.

Fiber cement slab prefabricated composite wallboard: light weight core material made of thin fiber cement board, foam filled polystyrene light concrete or foam expanded perlite lightweight concrete, and so on.

Ø fiber cement board integral grouting wall: a solid integral wall formed by using fiber cement board or calcium silicate board as surface layer, light steel keel as column, and pumping light grouting material into its cavity.

Glass fiber reinforced cement board (GRC board)

GRC lightweight wallboard can be divided into two categories: veneer and composite wallboard. Veneer: GRC flat panel and GRC lightweight porous panel; composite wallboard: GRC composite exterior wall panel, GRC external wall internal insulation board, p-grc external wall internal insulation board, GRC external insulation board and GRC rock wool external wall hanging board.

Features: light weight, high strength, good impact resistance, good water resistance and durability. It can be used as a variety of non load bearing inner and outer wall panels, decorative panels, etc.

(1) Glass fiber reinforced low alkalinity cement lightweight board (GRC Plate)

The board is made of alkali resistant glass fiber, low alkalinity cement, light aggregate and water as the main raw materials through slurry distribution, dehydration, rolling and curing.

Ø requirements: according to JC / T 1027-2007, it can be divided into four types: single layer plate, ribbed single layer plate, frame plate and sandwich board (with or without decorative layer on the surface).

Ø application: it is mainly used as internal partition wall and ceiling board; it is used for decorative panel of exterior wall (bearing or non bearing walls).

(2) Glass fiber reinforced cement lightweight perforated partition board

Ø the prefabricated non load-bearing light-weight porous internal partition board with alkali resistant glass fiber and low alkalinity cement as the main raw materials is also known as GRC hollow slab.

Ø requirements: according to JC / T 19631-2005, it can be divided into four types: ordinary plate, door frame plate, window frame plate and lintel plate, and two types of 90 and 120 type according to the thickness.

Ø specification: width 600, length 2500-3000, 2500-3500mm

Ø application: it can be used as non load bearing internal and external walls, internal partition walls and load-bearing walls below two floors, such as rooms, kitchen and bathroom balconies.

(3) GRC composite wallboard

GRC composite exterior wall panel

The light-weight composite wall panel is made of alkali resistant glass fiber and low alkalinity cement mortar, with reinforced concrete rib built in and inner core of thermal insulation material filled.

Classification: cement, perlite, rock wool board, polystyrene foam board composite external wall board; thickness 120, 370mm two kinds.

Features: high strength, good toughness; impermeability, fire resistance, weather resistance; good insulation and sound insulation.

GRC exterior insulation board

The core type composite insulation board made of GRC is a surface layer, polystyrene foam board is a core layer, and is made by pedestal method or group vertical mold method.

Classification: the board is 2400-2700 mm long and 595 mm wide; the thickness is divided into 50 mm and 60 mm, the former is combined with 240 external wall, and the latter is combined with 200 concrete external wall, with energy saving of 50%.

Features: light weight, good waterproof and fire resistance; good folding and impact resistance; good thermal insulation.

Structure: ① 330mm brick GRC internal insulation composite wall:

(plastering 20 + brick wall 240) + (air layer 20 + GRC board 50 (surface layer 10 + PS board 30 + surface layer 10))

② 300 mm concrete GRC internal insulation composite wall:

(plastering 20 + brick wall 200) + (air layer 20 + GRC board 60 (surface layer 10 + PS board 40 + surface layer 10))

P-grc exterior insulation board

The mortar made of polymer emulsion, cement and sand is used as the surface layer, the alkali resistant glass fiber mesh as reinforcing material, and the sandwich type inner insulation board made of self extinguishing polystyrene foam as core material.

Classification: 900-1500mm in length and 595mm in width; 40 and 50mm in thickness.

Application: it can be used for inner and outer insulation of fired brick or concrete exterior wall.

GRC external insulation board

GRC surface layer and high efficiency thermal insulation material are pre compounded to form the board for external thermal insulation of external wall. It can be made into single panel or double-sided panel, and the single panel will place the thermal insulation material in the GRC trough plate; the double panel is to clamp the insulation material between the upper and lower GRC plates.

Specification: the board length is 550-900mm, the width is 450-600mm; the thickness is 40-50mm, of which the polyphenylene plate is 30-40mm, and the GRC surface is 10mm thick.

Application: closely combined with the external wall structure and air isolation type.

GRC rock wool external wall hanging board

It is a kind of external insulation board which is composed of GRC external wall hanging board and rock wool board on site.

Specification: there are two kinds of panels, i.e. between windows and upper and lower windows, with plate thickness of 10 mm and rib height of 70 mm.

plasterboard

Paper faced gypsum board

Gypsum hollow slab

Fiber gypsum board

The building board is made of building gypsum as the main material, mixed with organic or inorganic fibers and additives, mixed with water, wound, rolled and pressed, solidified and dried. Classification: according to the structure, there are single-layer and three-layer fiber gypsum board; according to the use, there are composite board, light board and structural board.

Specification: length 1200-3000mm, width 600-1220 mm, thickness 10-12.5mm.

Application: for non load bearing partition wall, ceiling, floor, fire door, etc.

Gypsum particleboard

The board is made of building gypsum, wood shavings, appropriate retarder and water. The semi dry production process is used to complete the consolidation of gypsum and wood materials under pressure. Classification: plain board and surface decorative board; the latter is divided into veneer veneer, melamine veneer, PVC film decorative gypsum particleboard.

Specification: length 2400 ～ 3050mm, width 1220mm, thickness 8 ～ 28mm.

Application: for non load bearing partition wall, ceiling and composite wall substrate.

Gypsum board composite wallboard and wall

It refers to the composite gypsum wall material which is made of gypsum board or gypsum material as surface layer, compounded with other light insulation materials, prefabricated or made on site. Classification: Prefabricated gypsum board composite wall board, glass fiber reinforced gypsum external wall internal insulation board, inflatable gypsum board, on-site assembled gypsum board internal thermal insulation composite external wall, plastered gypsum polystyrene internal insulation wall, etc.

Gypsum board composite wallboard

It is a prefabricated composite board with gypsum board as surface layer and thermal insulation material as core material.

Common varieties: paper gypsum polystyrene composite board, paper gypsum glass wool composite board, paperless gypsum polystyrene composite board.

Specification: the first two are 2500-3000mm long, 900-1200mm wide, 42-52mm thick and 12mm thick gypsum board surface layer; the latter is 800-850mm long, 600mm wide and 45-60mm thick, and the gypsum board and polystyrene board are casted

Application: for non load bearing partition wall, external wall internal insulation.

Fiber reinforced gypsum exterior insulation board

Sandwich composite insulation board made of glass fiber reinforced gypsum as surface layer and polystyrene foam plastic board as core layer.

Requirements: the surface layer is gypsum glass fiber slurry, reinforced with 3 × 3 and 5 × 5mm glass fiber mesh cloth, and the board length is provided with groove on both sides.

Specification: plate length 2400-2700mm, width 595mm, thickness 40-60mm

Application: it is used for the inner thermal insulation wall of fired brick or concrete outer wall, with poor waterproof performance

Aerated gypsum

With building gypsum, inorganic filler and bubble dispersion stabilizer as raw materials, the composite external wall internal insulation board is formed by mixing, aerating and pouring core, and then pouring gypsum surface layer.

Classification: whether there is paper inflatable gypsum insulation board, paperless foam gypsum insulation board, inflatable gypsum gypsum thermal insulation board.

Specification: plate length 900 mm, 2500 mm, width 600 mm, thickness 50-70 mm

Application: for the inside of brick or concrete external wall, external wall facing + wall + air layer + thermal insulation layer + inner surface layer

Fiber reinforced calcium silicate board

It is made of calcium material, silicon material and reinforced fiber (cellulose fiber, alkali resistant glass fiber, etc.) as the main material, and is formed by molding and autoclave curing.

Veneer: asbestos calcium silicate board and non asbestos calcium silicate board; implement JC / t564.1 (2) - 2008 asbestos free calcium silicate board

Features: light weight, high strength, incombustible, heat insulation, dry and wet deformation is small, moisture resistance is good, processability is good, can be used in various composite wall panel, ceiling board and external wall panel; disadvantages: strong water absorption, bonding with the substrate requires special plastering materials.

Composite wallboard: light weight core material made of thin fiber reinforced calcium silicate board, filled with foamed polystyrene light concrete or foam expanded perlite lightweight concrete. It is divided into prefabrication and integral grouting.

Calcium silicate board integral grouting wall: it is a solid integral wall formed by using calcium silicate board as surface layer, light steel keel as column, and pumping light grouting material into its cavity.

Features: small self weight, excellent heat insulation performance and fast construction speed

Application: for partition wall, ceiling, etc.

Aerated concrete slab

It is a porous plate made of siliceous and calcareous materials, aluminum powder as gas generating agent, reinforced mesh after anti-corrosion treatment, water mixing, pouring molding, pre curing cutting, autoclaved curing.

Classification: aerated concrete exterior wall panel, partition board and roof (building) panel

Features: light weight, good thermal insulation, sound insulation, good fire resistance, seismic resistance, sufficient strength, good processability, convenient construction, widely used in various non load-bearing partition walls, infilled walls, roof panels, etc.

Specifications: in accordance with the standard of gb15762-2008, length 1800-6000mm, width 600mm, thickness 75, 100, 125, 150, 175, 200, 250, 300 mm, etc.

Grade: a2.5, a3.5, a5.0, A7.5 according to strength; B04, B05, B06, B07 according to dry density; excellent (a), first class (b) and qualified (c) according to quality.

Note: the aerated concrete board has high moisture content when leaving the kettle. It should be stored for more than 5 days before leaving the factory. Transportation and stacking should be in accordance with the requirements

Lightweight aggregate concrete slab

There are two types of lightweight aggregate concrete slabs: solid slabs and hollow wallboards.

Solid board: there are light aggregate concrete reinforced wallboard, lightweight ceramsite concrete slab, cement polystyrene insulation board, etc;

Hollow wallboard: light aggregate concrete wallboard, industrial ash concrete hollow partition board, etc.

Features: it has light weight, high strength and excellent impact resistance, crack resistance, water resistance, fire prevention and sound insulation. At the same time, it is of great significance to increase the use area, improve the construction speed, reduce the labor intensity and reduce the cost.

(1) Light aggregate concrete reinforced wallboard and strip

1. Lightweight aggregate concrete reinforced wallboard: it is a reinforced lightweight wallboard made of cement as binder, ceramsite or natural pumice as coarse aggregate, ceramic sand, expanded perlite sand and pumice sand as fine aggregate after mixing, forming and curing.

Main types: pumice all light concrete board, shale ceramsite furnace ash concrete board, fly ash ceramsite perlite sand concrete board, coal gangue ceramsite perlite sand concrete wall panel, ceramsite sand free large hole partition board, etc.

2. The type of reinforced strip board: it can be divided into seven types: standard plate, door frame plate, window frame plate, door upper plate, door lower plate, window lower plate and special-shaped plate; according to the surface processing degree, it can be divided into smooth panel and hemp panel.

Specification: length 2400-2700 mm, width 590 mm, thickness 60 mm, 80 mm.

Application: for non load bearing internal partition wall, balcony, household board, balcony breast board and pipeline well.

(2) Light concrete hollow wallboard and strip board

1. Lightweight aggregate concrete hollow wallboard: it is a strip board with several circular holes, which is made of cement, fly ash, light aggregate and other main raw materials by screw extrusion.

2. Hollow partition board of industrial ash concrete: it is made of cement and industrial ash (fly ash, coal gangue, slag, slag, aerated concrete debris, etc.) as the main materials. Implementation of the "ash concrete hollow partition board" (GB / t23449-2009)

Features: high flatness, no cement mortar leveling after installation, good processability, mainly used for non load bearing partition wall.

(3) Cement polystyrene board

Ordinary portland cement, broken particles of waste polystyrene, foaming agent, etc. are used as raw materials. After mixing with water and pouring, they are formed into plates, which are used as external insulation board and external insulation board.

Specification: 900mm long, 600mm wide, 60-80mm thick external insulation board; 50-90mm thick internal insulation board.

It can be used as external insulation board

Other wall panels

Plant fiber cement board

It is a kind of fiber cement board which is made of wood fiber or straw as reinforcement material. It includes the following:

● wood fiber reinforced cement hollow wallboard (PRC board)

With wood fiber as reinforcement material and cement mortar as base material, the strip board with several circular holes is made by extrusion method. The plate width is divided into 298, 448, 598, 898 mm, and the plate thickness is 80 mm; it is mainly used for non bearing internal partition wall with seismic fortification intensity below 6 and 7 degrees.

● cement particleboard (sawdust, sawdust)

The board is made of cement as cementing material, wood shavings and other reinforcing materials, adding water and proper amount of coagulant, and pressing in the semi dry state to make cement and wood materials consolidated.

Specification: 2600-3200mm long, 1250mm wide and 8-40mm thick;

Advantages: light weight, sound insulation, heat insulation, fireproof, waterproof, insect resistant, nailable, sawable, decorative.

Application: wall panel and ceiling board for composite wall.

Plant fiber cement board

The board is made of straw as reinforcing material, cement as cementing material, adding water and proper amount of coagulant, pressing cement and plant fiber material in semi dry state.

Specification: length 2500-3000mm, width 600-1200mm, thickness 5-30mm;

Advantages: heat preservation, sound absorption, good fire resistance, no harmful gas produced when burned by open fire.

Application: used as single board or prefabricated large plate components. The moisture content should be controlled at 8-10% to avoid cracking at the joint.

Steel wire mesh cement sandwich panel

It is a three dimensional space welded steel wire mesh and foam plastic plate or semi hard rock wool produced by factory equipment, which forms a lightweight core board after the cement mortar is sprayed on the construction site. It includes the following two categories:

Steel wire mesh cement foam plastic sandwich panels: among them, polystyrene plastic sandwich panels are widely used. They are also divided into two kinds: steel wire mesh polystyrene core board (GJ board) and steel wire mesh cement polystyrene sandwich panel (GSJ board).

● steel wire mesh cement rock wool sandwich board (Gy board)

The GJ board is a grid core board made up of three-dimensional space welded steel wire mesh frame and filled flame retardant polystyrene foam slab (or whole board).

GSJ plate: it is a component formed by spraying cement mortar on both sides of the GJ plate, that is, the three-dimensional space welded steel wire mesh cement mortar supporting the outer wall of the plate, and the polystyrene foam filled with oxygen index of 30, with a 25mm thick cement mortar wrapped around the board on the surface of the GSJ board.

Structural form: ① assembled type: two layers of steel wire mesh are welded into a grid frame with W steel wire, and then polystyrene lath and other thermal insulation materials are filled in the gap, such as Taibai plate (tip);

② Integral type: the polystyrene board is first placed between two layers of steel wire welded mesh, and then the two layers of steel wire are welded into a grid frame with connecting bars, such as shuleshe plate

Features: light weight, high strength, good seismic resistance, good thermal insulation, sound insulation, fire resistance.

Application: when the diameter of wire mesh is 2mm, it is used as non load-bearing; when it is 2-4mm and the diameter of joint bar is 4-6mm, it is used as load-bearing wallboard, such as 3D board.

The new composite wallboard UBS board is made of steel wire connecting two TIP plate steel wire frames together to form a composite grid. The gap between the two layers of polystyrene foam board is used for site watering concrete so as to make the UBS plate a load-bearing component. Features: excellent heat preservation, heat insulation and load-bearing performance.

Gy board: it is a rock wool composite board composed of three-dimensional space welded steel wire grid and filled with mineral wool.

Classification: partition wall panel, exterior wall panel, floor and roof panel.

Specification: length within 3000mm, width 1200, 900mm, thickness 65 (40) - 85 (60) mm;

Application: it is used for multi-storey non load-bearing internal partition wall, external enclosure wall, thermal insulation composite external wall, bearing wall of bottom floor, floor and roof panel, and internal partition wall of building storey adding and old building reconstruction.

Metal faced sandwich panel

It is made of color coated steel sheet, with flame retardant polystyrene foam, polyurethane foam or rock wool and slag cotton as core material, and made of adhesive. There are three main types:

Metal polystyrene sandwich board (EPS board)

A composite sheet made of color steel sheet, polystyrene foam core and high strength polyurethane adhesive as adhesive, heated and pressed.

Specification: plate length ≤ 12M, width 1150, 1200mm, plate thickness 50, 75, 100, 150, 200, 250mm;

Features: light weight, high strength, load-bearing, heat insulation, waterproof, decoration in one, fast construction, beautiful facade, good durability and corrosion resistance.

Application: for external wall hanging board and roof panel.

Polyurethane sandwich panel with metal surface

A metal sandwich panel made of color galvanized steel sheet and polyurethane foam core. Commonly known as "Tianrong board" specification: plate length ≤ 12M, width 1000mm, thickness 30, 40, 50, 60, 80, 100 mm features: light, high strength, heat insulation, water resistance, corrosion resistance, good processability, convenient and fast construction. It has better sound insulation than EPS board. Application: it can be used as common load-bearing wall material and roof panel. The plate with thickness more than 100 mm can be used as cold storage board.

Metal faced rock wool board sandwich board

The board is made of metal plate as surface layer, polyurethane glue or modified phenolic resin adhesive as binder and hard rock mineral wool board. Specification: plate length ≤ 12M, plate width 900, 1000mm, plate thickness of 50, 80, 100, 120, 150, 200 mm. Features: in addition to the above advantages, it has excellent fire resistance and can withstand temperatures below 1200C for a long time. It can also be used in marine engineering.

Metal surface materials can be color sprayed steel plate, galvanized steel plate, stainless steel plate, aluminum plate and steel plate, with thickness of 0.5-0.8mm.

Reinforced concrete thermal insulation composite exterior wall panel

It is a composite exterior wall panel with reinforced concrete as bearing layer and surface course, rock wool as core material and one-time compounding on pedestal.

Classification:

① According to the bearing capacity: it can be divided into bearing concrete rock wool and non bearing thin-wall concrete rock wool composite external wall panel;

② According to the core material: it can be divided into concrete polyphenyl, concrete expanded perlite and concrete rock wool composite exterior wall panel

Structure: it is composed of three layers: concrete facing layer, thermal insulation layer and concrete structure layer.

Load bearing concrete rock wool composite exterior wall panel thin wall concrete rock wool

Structure: general reinforced concrete bearing layer (inner layer) is 150 mm thick, rock wool insulation layer (middle layer) is 50 mm thick, concrete facing layer (outer layer) is 50 mm thick, and plate thickness is 250 mm.

Features: light weight, high strength, good heat preservation and heat insulation performance, convenient construction.

Application: it is used as load-bearing exterior wall panel of large formwork technology building and assembling large plate high-rise building system.

Composite exterior wall board concrete polyphenylene (expansion)

Structure: concrete structure layer (inner layer) is 50 (or 70) mm thick, rock wool insulation layer (middle layer) is 80mm, concrete facing layer (outer layer) is 30mm thick, and plate thickness is 160-180mm.

Features: light weight, good thermal insulation, sound insulation, convenient construction.

Application: used as non load bearing exterior wall engineering of frame light board system and high-rise large formwork system building.

(perlite) composite exterior wall panel

Construction: composite external wall with load-bearing concrete and rock wool, thermal insulation layer is polystyrene foam or expanded perlite.

Features: light weight, good heat preservation and heat insulation performance, convenient construction.

Application: used as non load bearing exterior wall engineering of frame light board system and high-rise large formwork system building.

At present, there is no national or industrial standard

Plant fiberboard

It refers to a kind of light artificial board made of plant fiber, such as rice straw, rice husk board, bagasse board, wheat straw particle board, cotton straw fiberboard and organic composite board made of them.

Rice husk board

Rice husk as the main material, synthetic resin as binder, through mixing, mixing, paving, hot pressing and curing.

Binder: urea formaldehyde resin, phenolic resin

Features: light weight, heat insulation, sound insulation and enough strength, moth proof, anti-corrosion, Machinable, good decoration.

Application: used as interior partition wall, cabinet board, ceiling, door core board and furniture.

Paper straw board

The paper straw board is made of natural rice straw or wheat straw as the main material, heated and extruded, and pasted with tissue paper on the surface. It is divided into paper straw and wheat straw.

Specification: length 1.8-3.6m, width 1.2m, thickness 58mm; according to gb9781-1988, it is divided into three grades: excellent, first and qualified.

Features: good thermal insulation, sound insulation and seismic performance, sufficient strength, stiffness, fire resistance and moisture resistance.

Application: it can be used as inner partition wall, outer wall lining, ceiling and roof panel. It should be treated with damp proof when used in composite exterior wall.

U SP wallboard (prestressed concrete hollow slab)

SP wallboard is a kind of concrete slab made of high strength and low relaxation prestressed steel strand, with cement, sand and stone as raw materials, after tension, mixing, extrusion, curing, stretching and cutting.

It is a kind of prestressed concrete hollow slab with large span and strong bearing capacity, including floor slab, roof slab and external wall slab.

According to GB 14040-1993, it is indicated by the code y-kb, and the edge groove shall be set at the edge of the plate.

Classification: SP ordinary board and SP composite exterior wall panel;

Exterior insulation board

External thermal insulation board is one of the main forms of building thermal insulation. Advantages: ① protect the base wall; ② eliminate or reduce the thermal bridge; ③ conducive to the thermal stability of the room.

According to its production mode, it can be divided into prefabrication and on-site composite.

Prefabrication: including BT type external insulation board, GRC external insulation board, GRC rock wool external wall hanging board, steel wire mesh polystyrene external insulation board;

Site composite: there are fabricated keel external insulation board, various fiber reinforced polystyrene external insulation board.

BT precast exterior wall external thermal insulation composite wall: its outer enclosure is made of cement mortar, and galvanized steel wire mesh and reinforcing bar are used as reinforcing materials. Generally, the flexible surface waterproof layer is applied to the slab joint.

Fiber reinforced polystyrene external insulation board: it is a kind of composite wall composed of base wall, thermal insulation layer, fiber reinforced layer and facing layer assembled on site.