CN106894540A - A kind of FRP plate material and the sandwich thermal insulated assembled wall of regeneration concrete - Google Patents

Abstract

The invention discloses a kind of FRP plate material and the sandwich thermal insulated assembled wall of regeneration concrete.Including：Regeneration concrete outer layer wallboard, regeneration concrete internal layer wallboard, FRP plate, FRP wall connecting concave-convex-pieces.Wherein described FRP plate is placed in the middle of wall, and the edge of a wing of FRP plate is cast in regeneration concrete ectonexine wallboard.Insulation expanded polystyrene EPS materials are filled in the web of FRP plate with the space of wallboard cut-off.FRP wall connecting concave-convex-pieces are placed on wall two ends simultaneously.Discarded building refuse concrete is recycled and is made regeneration concrete by the present invention, is economized on resources.Both combine and overcome traditional wall structure to bother, and cost is expensive, and construction is inconvenient, the shortcomings of ductility difference.On the other hand cause that wall weight reduction, cost reduction, wall have good heat preservation effect simultaneously.The present invention can be used for building construction and industrial premises has the non-bearing filling wall of insulation and the shear wall of load-bearing antidetonation.

Description

A FRP board and recycled concrete sandwich insulation composite wall

technical field

The invention belongs to the field of civil engineering, and in particular relates to an FRP plate and recycled concrete sandwich insulation composite wall.

Background technique

At present, the amount of waste concrete in the construction waste caused by the demolition of old buildings every year in our country is huge, and it is increasing day by day. The huge processing costs and the resulting environmental problems are also very prominent. In order to minimize the exploitation of natural resources, the recycling of construction waste must be maximized. Effective treatment and utilization of waste concrete, making it a recyclable renewable resource, and increasing the development and research of its application technology is imperative. However, due to the inherent damage of recycled aggregates and a layer of old mortar on the surface, recycled concrete has a high water absorption rate, resulting in the strength and durability of recycled concrete being inferior to ordinary concrete, which limits its use in some aspects.

Many materials are now used to make walls. The common ones are organic composite sandwich wall, light steel keel plus gypsum board, etc. However, these wallboards are affected to a certain extent due to their high price, low strength, and inconvenient construction. Therefore be badly in need of a kind of easy and quick installation, cheap, thermal insulation is good, good ductility and can reduce the body of wall of building self-weight. However, a composite wall of FRP panels and recycled concrete sandwich insulation makes full use of the excellent characteristics of FRP panels such as good ductility, low thermal conductivity, good durability, low cost, and high strength, and utilizes the recycling of waste construction waste concrete Made of recycled concrete. The combination of the two solves the above problems well. The wall can be used for non-load-bearing infill walls with thermal insulation and load-bearing and anti-seismic shear walls for housing construction and industrial plants.

Contents of the invention

In order to urgently need a wall that is easy and quick to install, low in cost, good in heat preservation, good in ductility and able to reduce the self-weight of the building, the present invention provides a composite wall of FRP board and recycled concrete sandwich insulation. The sandwich thermal insulation wall is composed of recycled concrete outer wall panels, recycled concrete inner wall panels, FRP panels, and FRP wall connecting concave-convex parts. Wherein the FRP board is placed in the middle of the wall, and the flange of the FRP board is poured in the inner and outer layers of recycled concrete, and the space separated by the web of the FRP board and the wall board is filled with thermal insulation expanded polystyrene EPS material. At the same time, the FRP wall connection concave and convex parts are placed at both ends of the wall.

In order to solve the above problems and achieve the above requirements, the present invention adopts the following technical solutions: a composite wall of FRP board and recycled concrete sandwich insulation, characterized in that the sandwich insulation wall includes: recycled concrete outer wall panels , Recycled concrete inner wall panels, FRP panels, FRP wall convex connectors, FRP wall concave connectors; wherein the FRP panels are placed in the middle of the wall, and the flanges of the FRP panels are poured on the recycled concrete outer wall panels In the recycled concrete inner wall panel, the space between the web of the FRP panel and the wall panel is filled with thermal insulation expanded polystyrene EPS material; at the same time, the FRP wall is connected with the FRP wall convex connector and the FRP wall concave connector. on both sides of the wall.

The two walls are connected together through the FRP wall convex connectors and the FRP wall female connectors placed on both sides of the walls.

The surface of the notch of the FRP wall male connector and the FRP wall female connector is frosted.

The two walls are connected by the FRP wall convex connectors and the FRP wall concave connectors placed on both sides of the walls, and at the same time, they are connected with thermal insulation mortar and the gaps are filled.

The width of the protruding wall of the FRP wall connecting convex part is slightly smaller than the width of the concave part of the FRP wall connecting concave part, and the thickness direction of the FRP wall connecting concave and convex part fits closely.

The material used to connect the interior and exterior wall panels is FRP panels. The FRP board can be an open-type pressed-type FRP board or a shrink-type pressed-type FRP board or a U-shaped FRP board.

Compared with the existing technology, the FRP plate and recycled concrete sandwich insulation composite wall has the following advantages:

(1) The FRP board material used in the wall has excellent characteristics such as good ductility, low thermal conductivity, good durability, low cost and high strength. Most of the existing prefabricated sandwich insulation walls use ordinary steel bar connectors or metal alloy connectors. Ordinary steel bar connections are prone to thermal bridges, and the corrosion performance is poor, which poses a safety hazard to the wall. Metal alloy connectors are more expensive. Therefore, the use of FRP boards as the connectors connecting the interior and exterior wall panels effectively avoids the generation of thermal bridge effects and improves the thermal insulation effect and safety of the walls. At the same time, the cost of the wall is reduced and the overall ductility is improved.

(2) Due to the large space between the web of the FRP board and the wall board, the wall has a large void ratio, which greatly reduces the quality of the wall. And the expanded polystyrene EPS material is filled in the gap, and the material has a good heat preservation effect. Make the wall performance better.

(3) The FRP plate not only has the effect of shear resistance, but also connects the tension and compression areas. Improve the integrity of the wall structure.

(4) Satisfy the resource-saving and environment-friendly social development direction proposed by the state. The wall uses waste concrete as aggregate to make recycled concrete as the wall material. In this way, the exploitation of natural resources is minimized, the recycling of construction waste is increased, and waste concrete is effectively processed and utilized, making it a recyclable renewable resource, turning waste into treasure, and meeting the development needs of today's society.

Description of drawings

Figure 1 is a schematic cross-sectional view of an open-type pressed FRP plate and recycled concrete sandwich insulation composite wall.

Fig. 2 is a schematic cross-sectional view of a composite wall of shrinkage-type compressed FRP panels and recycled concrete sandwich insulation.

Fig. 3 is a schematic cross-sectional view of a U-shaped FRP plate and recycled concrete sandwich insulation composite wall.

Fig. 4 is a schematic diagram of the FRP wall concave connector between the FRP plate and the recycled concrete sandwich insulation composite wall.

Fig. 5 is a schematic diagram of the FRP wall convex connector between the FRP plate and the recycled concrete sandwich insulation composite wall.

Fig. 6 is a schematic cross-sectional view of an open-type pressed FRP sheet.

Fig. 7 is a schematic diagram of a cross-section of a necked-type pressure-formed FRP sheet.

Fig. 8 is a schematic cross-sectional view of a U-shaped FRP plate.

In the figure: 1-recycled concrete outer wall panel; 2-recycled concrete inner wall panel; 3-open type pressed FRP plate; 4-FRP wall convex connector; 5-FRP wall concave connector; 6- Expanded polystyrene EPS board; 7-insulation mortar; 8-FRP wall concave-convex connector notch frosted surface; 9-shrinking type FRP board; 10-U-shaped FRP board; 11-flange of FRP board; 12-FRP sheet web.

detailed description

The preferred embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. The preferred embodiments described here are only used to explain and illustrate the present invention, and are not intended to limit the present invention.

Embodiment 1: An open-type pressed FRP plate and recycled concrete sandwich insulation composite wall.

1. See Figure 1, which includes recycled concrete outer wall panels (1), recycled concrete inner wall panels (2), open-type pressed FRP panels (3), FRP wall convex connectors (4), FRP Wall concave connector (5), wherein the FRP board is placed in the middle of the wall, and the flange (11) of the FRP board is poured in the recycled concrete inner and outer layer boards, and the web (12) of the FRP board and the wall The space of the board partition is filled with thermal insulation expanded polystyrene EPS material (6). At the same time, the concave-convex pieces (4) and (5) connected to the FRP wall are placed at both ends of the wall.

2. According to the design requirements, determine the pouring thickness of the inner and outer wall panels, the thickness and position of the open-type FRP panel (3), the FRP wall connection concave-convex parts (4), (5), support the formwork, and pour in the prefabrication factory Recycled concrete that meets design requirements.

3. The two walls are connected together by the FRP wall connection concave-convex parts placed on both sides of the wall. The notch surface of the FRP wall connecting concave-convex parts has been frosted, and the frosted surface is shown in Figure 4 and Figure 5. This treatment increases the connection effect between the FRP concave-convex connectors, and at the same time increases the anchoring force between the FRP concave-convex connectors and the recycled concrete.

4. When the two walls are connected together by the FRP wall connection concave-convex parts placed on both sides of the wall, they are connected and filled with thermal insulation mortar (7) at the same time, so as to increase the thermal insulation effect of the wall and make the The integrity of the wall is better.

5. The protruding width of the FRP wall connection convex piece (4) is slightly smaller than the concave width of the FRP wall connection concave piece (5), and the thickness direction of the FRP wall connection concave-convex piece fits closely.

Embodiment 2: A composite wall body of necking-type pressure-type FRP plate and recycled concrete sandwich insulation.

The construction steps of the composite wall are the same as those in Embodiment 1, and it is only necessary to replace the open-type profiling FRP sheet (3) with the constricting-type profiling FRP sheet (9). See Figure 2.

Embodiment 3: A U-shaped FRP board and recycled concrete sandwich insulation composite wall.

The construction steps of the composite wall are the same as those in Embodiment 1, and only the open-type profiled FRP sheet (3) needs to be replaced with a U-shaped FRP sheet (10). See Figure 3.

FRP materials can also be replaced by organic composite materials such as carbon fiber reinforced composite materials (CFRP), glass fiber reinforced composite materials (GFRP), and aramid fiber reinforced composite materials (AFRP).

The above are only preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be defined by the claims.

Claims (5)

1. a kind of FRP plate material and the sandwich thermal insulated assembled wall of regeneration concrete, it is characterised in that the sandwiched thermal-insulating wall includes： Regeneration concrete outer layer wallboard（1）, regeneration concrete internal layer wallboard（2）, FRP plate, FRP wall convex connectors（4）, FRP walls Recessed connector（5）；Wherein described FRP plate is placed in the middle of wall, and FRP plate the edge of a wing（11）It is cast in regeneration concrete outer layer Wallboard（1）With regeneration concrete internal layer wallboard（2）In, in the web of FRP plate（12）Insulation is filled in the space separated with wallboard Expanded polystyrene EPS materials（6）；While FRP wall connecting FRP wall convex connectors（4）With FRP wall recessed connectors（5） It is placed on wall both sides.

2. a kind of FRP plate material according to claim 1 and the sandwich thermal insulated assembled wall of regeneration concrete, it is characterised in that By being placed on the FRP wall convex connectors of wall both sides between two pieces of walls（4）With FRP wall recessed connectors（5）It is connected to one Rise.

3. a kind of FRP plate material according to claim 2 and the sandwich thermal insulated assembled wall of regeneration concrete, it is characterised in that FRP wall convex connectors（4）With FRP wall recessed connectors（5）Notch surface done frosted treatment.

4. a kind of FRP plate material according to claim 2 and the sandwich thermal insulated assembled wall of regeneration concrete, it is characterised in that By being placed on the FRP wall convex connectors of wall both sides between two pieces of walls（4）With FRP wall recessed connectors（5）It is connected to one Thermal insulation mortar is used when rising simultaneously（7）Connect and fill its space.

5. a kind of FRP plate material according to claim 2 and the sandwich thermal insulated assembled wall of regeneration concrete, it is characterised in that FRP wall connecting male members（4）The width of prominent wall is slightly smaller than FRP wall connecting female members（5）Recessed width, FRP walls connect Concave-convex-piece thickness direction is connect closely to agree with just.