CN100396863C - Composite thermal insulation concrete wall and its construction method - Google Patents

Abstract

A composite thermal insulation concrete wall and its construction method. The thermal insulation layer doubles as a wall formwork, and the concrete wall base is poured in the wall formwork; the wall formwork is composed of two polystyrene foam side formworks arranged in parallel, There are built-in steel sheets in the board, two rows of built-in steel sheets have concave-convex teeth on the edge, and through holes are opened on the concave-convex teeth. The through hole of the side built-in steel sheet; outside the wall formwork, there are glass fiber mesh cloth layer pasted by polymer cement mortar, steel mesh riveted on the above built-in steel sheet, the second layer of glass fiber mesh cloth and decoration For the surface layer, the mesh holes of the steel mesh are filled with cement mortar with the same thickness as the steel mesh. The invention effectively improves the strength of the polystyrene thermal insulation wall template, prevents the outer wall from cracking, is easy to decorate the wall, and avoids the oxidation of the template surface by solar ultraviolet rays in the construction process.

Description

Composite thermal insulation concrete wall and its construction method

(1) Technical field

The invention relates to a building wall and a construction method thereof, in particular to a composite thermal insulation concrete wall and a construction method thereof.

(2) Background technology

Existing composite thermal insulation concrete wall adopts polystyrene foam (EPS) as the side form of the wall, the center is pulled and connected by steel parts, and concrete is poured. Although it has many advantages such as good thermal insulation and sound insulation, and convenient construction, there are still the following points to be improved: the strength of polystyrene thermal insulation wall formwork is low, and it is easy to expand and crack; the external wall lacks fixed points and is not easy to do. Wall decoration; after the wall concrete pouring is completed, the wall decoration work cannot be done immediately, which prolongs the overall construction time; the polystyrene insulation wall formwork is exposed to the sun's ultraviolet rays, and the oxidation of the formwork surface during the construction process cannot be avoided .

(3) Contents of the invention

The purpose of the present invention is to provide a composite thermal insulation concrete wall and its construction method, to solve the technical problem of the low strength of the polystyrene thermal insulation wall template; and to solve the problem that the polystyrene thermal insulation wall template is exposed to the sun's ultraviolet In addition, it is easy to oxidize the surface of the formwork during the construction process; it also solves the problem that the composite thermal insulation concrete wall lacks fixed points, is not easy to do wall decoration, and delays the overall construction time.

The technical solution of the present invention: the composite thermal insulation concrete wall includes a concrete wall base, a thermal insulation layer and a decorative surface layer, and is characterized in that the thermal insulation layer doubles as a wall formwork, and concrete is poured in the wall formwork wall base;

The wall formwork is composed of two polystyrene foam side formworks arranged in parallel. There are built-in steel sheets in the boards, and there are connecting steel bars between the built-in steel sheets. Two rows of built-in steel sheets are opposite, spaced and vertically embedded In the side formwork of the polystyrene foam plastic board, there are concave-convex teeth on the edge, and through holes are opened on the concave-convex teeth. The through hole of the built-in steel sheet;

On the inner surface of the wall formwork, there are glass fiber mesh cloth and surface layer pasted by polymer cement mortar in sequence from the inside to the outside;

On the outside of the wall formwork, there are glass fiber mesh cloth layer pasted by polymer cement mortar, steel mesh riveted on the above-mentioned built-in steel sheet, the second layer of glass fiber mesh cloth and decorative surface layer, and steel mesh cloth from inside to outside. The mesh holes are filled with cement mortar with the same thickness as the steel mesh.

The above-mentioned decorative surface layer is a paint layer on the surface of the plastering layer, or a colored plastering layer.

The cross-section of the built-in steel sheet is Π-shaped or L-shaped.

The above-mentioned connecting steel bars are in the shape of ] with hooks at both ends.

The construction method of this composite thermal insulation concrete wall is characterized in that the construction steps are as follows:

1) Place the wall formwork. The wall formwork is composed of two polystyrene foam side formworks arranged in parallel. Steel sheets are built into the boards, and the connecting steel bars are connected between the two boards. Two rows of built-in steel sheets are opposite to each other. Evenly distributed and vertically buried in the polystyrene foam board side formwork, with concave-convex teeth on the edge, and through holes on the concave-convex teeth. The concave-convex teeth and through holes are exposed on the inner surface of the polystyrene foam plastic board side formwork. The two ends of the connecting steel bar pass through the through holes of the built-in steel sheets on both sides;

2) Use polymer cement to paste glass fiber mesh cloth on the inner and outer surfaces of the wall formwork;

3) Use rivets and spacers to fix the expanded metal on the outside of the wall formwork, riveting it together with the built-in steel sheet in the wall formwork, painting the expanded metal with cement mortar with the same thickness as the expanded metal, and leveling to form the expanded cement base;

4), pouring concrete in the wall formwork;

5) Paste the second layer of glass fiber mesh cloth on the surface of the expanded metal cement base layer with plaster;

6) Make a decorative surface on the inner and outer surfaces of the wall.

The above-mentioned decorative surface layer is to paint on the surface of one layer of plastering, or directly make one layer of colored plastering.

The above-mentioned wall formwork uses polymer cement to paste lightweight decorative components at the places where decoration is required. The lightweight decorative components are made of polystyrene foam as the matrix. The polystyrene foam matrix is rectangular, and the wall surface is flat. The outer surface is a curved surface, the surface of the polystyrene foam plastic matrix is wrapped with a glass fiber mesh cloth pasted by polymer cement mortar, and there is a decorative surface layer on the outside of the glass fiber mesh cloth.

The cross-section of the built-in steel sheet is Π-shaped or L-shaped.

The above-mentioned connecting steel bars are in the shape of ] with hooks at both ends.

Beneficial effects: Polymer cement mortar is a single-component adhesive cement and primer used on EPS building foam. When it is used as a coating for EPS foam, it can provide a high-strength, high-bonding cement base layer on its surface. Covering with a layer of fiberglass mesh will increase the strength and impact resistance of the wall.

The expanded metal mesh combines the wall formwork into a whole, which can resist cracking in multiple directions and ensure that the wall is not easy to crack. In addition, a certain thickness of expanded metal is used to facilitate leveling of the wall.

Using this wall construction method can quickly harden the surface of the polystyrene thermal insulation wall formwork, and at the same time cooperate with the adjustable support inside the formwork to make it reach the required construction strength during the concrete pouring process and ensure the flatness of the wall surface during the pouring process , to avoid the phenomenon of mold expansion.

Using the wall construction method, after the concrete pouring is completed, the wall decoration work can be done, thereby shortening the overall construction time.

In summary, the present invention has the following advantages:

Effectively improve the strength of polystyrene insulation wall formwork and avoid expansion;

Enhance the integrity of the exterior wall with precise flatness;

Effectively prevent the external wall from cracking;

Easy to do a variety of wall decoration, flexible design;

After the wall concrete pouring is completed, the wall decoration work can be done, which shortens the overall construction time;

The cement base is attached to the surface of the polystyrene insulation wall formwork within a short time after it is installed in place, effectively avoiding the oxidation of the formwork surface by the sun's ultraviolet rays during the construction process.

(4) Description of drawings

Fig. 1 is the structural representation of wall formwork;

Figure 2 is a schematic diagram of the shape of the built-in steel sheet;

Fig. 3 is the shape schematic diagram of connecting steel bar;

Fig. 4 is the schematic diagram of fixing expanded metal mesh on the wall formwork;

Fig. 5 is a schematic diagram of installing lightweight components on the wall formwork;

Fig. 6 is a schematic diagram of a composite thermal insulation concrete wall structure;

Fig. 7 is a cross-sectional view of the composite thermal insulation concrete wall structure.

(5) Specific implementation methods

Referring to Figures 1, 2, 3 and 4 for the embodiments, the thermal insulation layer of this composite concrete wall doubles as a wall template, and the concrete wall base 2 is poured in the wall template 1.

See Figures 1, 2, and 3. The wall formwork is composed of two polystyrene foam side formworks arranged in parallel. There are steel sheets built into the boards, and the connecting steel bars are connected between the two boards. The two rows of built-in steel sheets 11 are opposite and uniform. Distributed at intervals and vertically embedded in the polystyrene foam board side formwork, its cross section is Π-shaped, with concave-convex teeth 13 on the edges of the two bending surfaces, and through holes 14 are opened on the concave-convex teeth. The concave-convex teeth and The through hole is exposed on the inner surface of the side formwork of the polystyrene foam plastic board. The connecting steel bar 12 is in the shape of ], and the hooks at both ends pass through the through holes of the built-in steel sheets on both sides respectively. The connecting steel bar is a horizontal connecting steel bar or/and an oblique connection rebar. For saving material, strengthen the holding power of built-in steel sheet and polystyrene material, two bending surfaces of built-in steel sheet have perforated hole 15, and perforated hole is circular hole or rectangular hole. For the convenience of construction, fixed points are provided for interior and exterior wall decoration, and the back side of the above-mentioned built-in steel sheet 11 is flush with the outside of the polystyrene foam board side formwork.

Referring to Figures 4, 6, and 7, there are glass fiber mesh cloth layers 5 pasted with polymer cement mortar, and steel mesh 7 riveted on the above-mentioned built-in steel sheets with rivets and gaskets 6 from the inside to the outside outside the wall formwork. , the second layer of glass fiber mesh cloth 8 and the decorative surface layer 9, and the mesh holes of the expanded metal mesh are filled with cement mortar with the same thickness as the expanded metal mesh. The above-mentioned decorative surface layer is a paint layer on the surface of the plastering layer, or a colored plastering layer.

Referring to Fig. 7, there are glass fiber mesh cloth 3 and surface layer 4 pasted by polymer cement mortar on the inner surface of the wall formwork from the inside to the outside.

The construction method of this composite thermal insulation concrete wall, the construction steps are as follows:

1), see Figure 1, 2, 3, install the wall formwork, the wall formwork is composed of two polystyrene foam side formworks arranged in parallel, the plates are built with steel sheets, and the connecting steel bars are connected between the two plates. Two rows of built-in steel sheets are facing each other, evenly spaced and buried vertically in the side formwork of polystyrene foam board. Its cross-section is ∏-shaped. The concave-convex teeth and the through holes are exposed on the inner surface of the polystyrene foam board side formwork, the connecting steel bars are in the shape of ], and the hooks at both ends pass through the through holes of the built-in steel sheets on both sides respectively.

2) Use polymer cement to paste glass fiber mesh cloth on the inner and outer surfaces of the wall formwork.

3), see Figure 3, use rivets and spacers to fix the expanded metal on the outside of the wall formwork, riveted together with the built-in steel sheet in the wall formwork, paint the cement mortar on the expanded metal with the same thickness as the expanded metal, and level it to form a steel plate Mesh cement base.

4), referring to Fig. 6, 7, concrete is poured in the wall formwork.

5) Referring to Figure 6, paste the second layer of glass fiber mesh cloth on the surface of the expanded metal cement base layer with plaster, but do not cover the installed lightweight decorative components to complete the middle layer.

6), referring to Fig. 6, make decorative surface layer on the inner and outer surfaces of the wall. The above-mentioned decorative surface layer is to paint on the surface of one layer of plastering, or directly make one layer of colored plastering.

Referring to FIG. 5 , the polymer cement lightweight decorative component 10 is pasted on the concrete wall base 2 at the place where the wall formwork 1 needs to be decorated. The lightweight decorative component can be made of polystyrene foam as a matrix, the polystyrene foam matrix is rectangular, the wall-attached surface is a straight surface, and the outward surface is a curved surface, and the surface of the polystyrene foam matrix is wrapped with a layer of polymer It is a glass fiber mesh cloth pasted with cement mortar, and there is a decorative surface layer on the outside of the glass fiber mesh cloth.

Claims (9)

1. A composite thermal insulation concrete wall, comprising a concrete wall base, a thermal insulation layer and a decorative surface layer, characterized in that: the thermal insulation layer doubles as a wall template, and the concrete wall base is poured in the wall template; The wall formwork is composed of two polystyrene foam side formworks arranged in parallel. There are built-in steel sheets in the boards, and there are connecting steel bars between the built-in steel sheets. Two rows of built-in steel sheets are opposite, spaced and vertically embedded In the side formwork of the polystyrene foam plastic board, there are concave-convex teeth on the edge, and through holes are opened on the concave-convex teeth. The through hole of the built-in steel sheet; On the inner surface of the wall formwork, there are glass fiber mesh cloth and surface layer pasted by polymer cement mortar in sequence from the inside to the outside; On the outside of the wall formwork, there are glass fiber mesh cloth layer pasted by polymer cement mortar, steel mesh riveted on the above-mentioned built-in steel sheet, the second layer of glass fiber mesh cloth and decorative surface layer, and steel mesh cloth from inside to outside. The mesh holes are filled with cement mortar with the same thickness as the steel mesh. 2. The composite thermal insulation concrete wall according to claim 1, characterized in that: the above-mentioned decorative surface layer is a painted layer on the surface of the plastering layer, or a colored plastering layer. 3. The composite thermal insulation concrete wall according to claim 1, characterized in that: the cross-section of the built-in steel sheet is Π-shaped or L-shaped. 4. The composite thermal insulation concrete wall according to claim 1, characterized in that: the above-mentioned connecting steel bars are in the shape of ] with hooks at both ends. 5. A construction method for a composite thermal insulation concrete wall, characterized in that the construction steps are as follows: 1) Place the wall formwork. The wall formwork is composed of two polystyrene foam side formworks arranged in parallel. Steel sheets are built into the boards, and the connecting steel bars are connected between the two boards. Two rows of built-in steel sheets are opposite to each other. Evenly distributed and vertically buried in the polystyrene foam board side formwork, with concave-convex teeth on the edge, and through holes on the concave-convex teeth. The concave-convex teeth and through holes are exposed on the inner surface of the polystyrene foam plastic board side formwork. The two ends of the connecting steel bar pass through the through holes of the built-in steel sheets on both sides; 2) Use polymer cement to paste glass fiber mesh cloth on the inner and outer surfaces of the wall formwork; 3) Use rivets and spacers to fix the expanded metal on the outside of the wall formwork, riveting it together with the built-in steel sheet in the wall formwork, painting the expanded metal with cement mortar with the same thickness as the expanded metal, and leveling to form the expanded cement base; 4), pouring concrete in the wall formwork; 5) Paste the second layer of glass fiber mesh cloth on the surface of the expanded metal cement base layer with plaster; 6) Make a decorative surface layer on the inner and outer surfaces of the wall. 6. The construction method of composite thermal insulation concrete wall according to claim 5, characterized in that: the above-mentioned decorative surface layer is painted on the surface of a layer of plaster, or directly made of a layer of colored plaster. 7. The construction method of composite thermal insulation concrete wall according to claim 5, characterized in that: the above-mentioned wall formwork uses polymer cement to paste light-weight decorative components at places where decoration is required, and the light-weight decorative components are made of polymer Styrene foam is used as the matrix, the polystyrene foam matrix is rectangular, the wall is a flat surface, and the outward surface is a curved surface, and the surface of the polystyrene foam matrix is wrapped with a layer of glass fiber pasted by polymer cement mortar. Mesh cloth, there is a decorative surface layer on the outside of the fiberglass mesh cloth. 8. The construction method of composite thermal insulation concrete wall according to claim 5, characterized in that: the cross-section of the built-in steel sheet is Π-shaped or L-shaped. 9. The construction method of composite thermal insulation concrete wall according to claim 5, characterized in that: the above-mentioned connecting steel bars are in the shape of ] with hooks at both ends.

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