CN2286215Y - 'Instantaneous mould' type multi-function external insulation wallboard using for cast-in-situ concrete - Google Patents

Abstract

The utility model belongs to the field of the products of novel building materials, particularly relating to the structure design of a side fascia, comprising a framework which uses an inner tridimensional wire frame of steel reinforcements, a middle tridimensional wire frame of steel reinforcements and an outer tridimensional wire frame of steel reinforcements; the outside of the inner layer of the framework is provided with a net sheet of fine wires by combination; the outside of the middle layer of the framework is coated with a flame resistant foam plastic board; the upper layer of the framework of steel reinforcements of the outside of the board is painted with a water-proof layer which is made of water-proof mortar; a supporting course for concrete is arranged between the middle layer of the framework and the inner layer of the framework in site placed. The utility model has various functions such as a good waterproofing function of multiple channels, an outer thermal insulation function, an inner fire-proof and load bearing function, etc. Besides, concrete can be manufactured in site placed without the addition of a mould plate.

Description

"Instant formwork" multifunctional external insulation wall panels for cast-in-place concrete

The utility model belongs to the field of new building material products, in particular to the structural design of an outer wall panel.

At present, it has become the mainstream to replace traditional clay bricks with reinforced cement concrete as wall materials. The use of cast-in-place concrete wall panels has the characteristics of good overall performance, earthquake resistance, and convenient construction. Therefore, cast-in-place concrete structures account for more than 80% of high-rise buildings. However, the use of cast-in-place concrete requires a large amount of formwork, resulting in a sharp increase in cost. In addition, the existing concrete wall panels only have a load-bearing function, and their thermal insulation and waterproof properties are poor.

The purpose of this utility model is to overcome the deficiencies of the prior art, and to design a new type of "instant formwork" wallboard, which not only has multiple functions such as good multi-channel waterproof, external thermal insulation, internal fireproof and load-bearing, etc. The concrete cast-in-place can be completed without additional formwork, and has broad prospects for promotion.

A "instant formwork" type multi-functional external thermal insulation wall panel designed by the utility model is characterized in that it includes three layers of inner, middle and outer three-dimensional steel grids as the skeleton; the inner layer of the skeleton is superimposed There are fine steel wire mesh sheets, and the outer side of the middle layer of the skeleton is laid with a flame-retardant foam plastic board to form an "instant formwork"; the steel skeleton layer on the outer side of the board is covered with a waterproof layer made of waterproof mortar; The cast-in-place concrete load-bearing layer.

The steel skeleton of the utility model is made by welding the longitudinal thick steel mesh ribs and the transverse thick steel wires which are pre-processed and welded; The connection between them is perpendicular or at some angle.

The steel wires of the mesh of the utility model are angular and have a converted diameter of 1.0-3.0mm, and the meshes are diamond-shaped or other non-garden or non-square shapes; the distance between the steel wires of the mesh is 3-10mm.

The outer side of the said waterproof layer of the utility model can also be combined with a decorative layer.

The wall panel of the utility model can be prefabricated in the factory into a certain size steel grid frame, complete the laying of the foam plastic board and the fixing of the steel wire mesh, and make an "instant formwork"; then transport it to the construction site, and splice the "instant formwork" The load-bearing layer is made of ordinary concrete, high-strength concrete or lightweight aggregate porous concrete that is integrated, waterproofed, and cast-in-place fluidized. After forming, the "instant formwork" does not need to be dismantled, but acts as a steel wire skeleton as a wall structure, forming a real iron wall concrete wall.

The utility model has the following characteristics:

1. The inner, middle and outer three-layer steel wire (rib) grid frame is used as the skeleton, all of which are welded mechanically or manually to increase the overall rigidity; the "instant formwork" made has the dual functions of being a formwork and replacing steel bars. Traditional steel formwork and wooden horizontal slabs save a lot of labor costs for formwork support and formwork removal. This alone can reduce the cost of reinforced concrete projects by 1/3 to 1/2, and the economic benefits are very considerable.

2. The utility model adopts the method of external heat preservation, which can avoid the cold bridge and the resulting indoor humidity, condensation, dripping water and mildew, and has the advantages of stable room temperature and comfortable feeling. Use 5-10cm thick self-extinguishing foam plastic board to make 17-25cm external thermal insulation composite wallboard, its thermal insulation effect exceeds 49-98cm clay brick wall, and its weight is only 25-30% of brick wall, which has broad promotion prospect.

3. The cast-in-place concrete 'instant formwork' multifunctional external thermal insulation wallboard has good mechanical properties. The compressive strength of high-strength concrete is above 60MPa, and ordinary concrete is above 20MPa; lightweight aggregate porous concrete is above 10MPa. Due to on-site pouring, the overall shock resistance is good. It can build load-bearing buildings with less than six floors; it can also be used as a filling wall for high-rise buildings.

4. Three-layer waterproof fortification with integral cast-in-place concrete for the interior, waterproof mortar and flexible waterproof for the outer layer, which has strong competitiveness for the vast areas with heavy rain and typhoon.

5. The outer thermal insulation wallboard has a good fireproof performance because the inside is reinforced concrete with a thickness of more than 100mm, and the flame-retardant foam plastic board is placed under the protection of the inner concrete and the outer layer of mortar. The test results from the inner side show that it is fire-resistant The limit reaches more than 6 hours. It fully complies with the fire protection requirements of residential buildings and public buildings in relevant regulations.

Brief description of the drawings:

Fig. 1 is a structural sectional view of an embodiment of the present invention.

The utility model proposes an embodiment of an "instant formwork" type multifunctional external thermal insulation wallboard for cast-in-place. Its structure is shown in Figure 1, and is described in detail as follows in conjunction with the accompanying drawings:

Consisting of steel skeleton 1 (inner layer 11, middle layer 12, outer layer 13), tile decoration layer 2, waterproof layer 3, self-extinguishing foam plastic board insulation layer 4, cast-in-place concrete load-bearing layer 5, fine steel wire mesh 6 composition. Its production process is as follows:

Select the steel wire with a diameter of 2.3mm as the length of the longitudinal steel wire (reinforcement) to be 2800mm; 2800mm, 1220mm wide self-extinguishing polystyrene foam board; weld the waist (rib) and longitudinal (rib) firmly; repeat welding many times, that is to make a rib-penetrating foam with multiple pieces of thick wire mesh plate.

Fix the above multiple thick steel wire mesh sheets with plastic plates in parallel on the track of the machine, and weld them firmly with multiple 1220mm long horizontal steel wires (ribs) and longitudinal steel wires (ribs) in sequence; the longitudinal and horizontal steel wires ( Rib) connection angle is 90°.

Pre-select the fine steel wire mesh, the mesh is diamond-shaped, the mesh size is 5mm, the cross-section of the mesh is parallelogram, and the converted diameter is 1.2mm; the surface is coated with anti-rust paint; the mesh size is 3100×1520mm.

Lay the fine steel wire mesh on the steel mesh frame on the side away from the foam plastic board, and weld them together firmly. The steel wire (rib) skeleton is also tightly wrapped with fine steel wire mesh to prevent slurry leakage.

On the outer side of the steel wire (reinforcement) skeleton, foam plastic board is used as one side formwork, and the thick steel wire mesh frame on the outer layer is used as reinforcing rib to make waterproof mortar with a thickness of 20mm.

After the waterproof mortar is hardened, the steel wire skeleton is placed vertically and firmly positioned, and cast with lightweight aggregate porous concrete.

After the concrete is poured and hardened, tiles are pasted on the outside of the waterproof layer as a decorative surface.

The composite exterior wall panel produced by the above method has accurate appearance and size, and there is little grout leakage during pouring. The measured grout leakage is only 0.80%, which shows that it is completely feasible to replace conventional steel and wood formwork with "instant formwork". After 7 days of curing, the apparent density of the concrete is 1060kg/m ³ and the compressive strength is 13MPa. The dimensions of the exterior wall panels are: length×width×height=2800×1220×150mm, the apparent surface density is 110kg/m ² ; the vertical compressive strength is 4.5MPa; the heat transfer coefficient of the exterior wall panels is 1.05W/m ² .k, and the thermal The resistance is 0.95m ² .k/W; the impermeability grade of the waterproof mortar reaches B6; there is no change on the reverse side after burning from the inside for 6 hours; the surface has a good decorative effect.

Claims (4)

1, a kind of cast-in-place " instant template " multi-functional outer insulated wall plate of formula that is used for is characterized in that, comprises that with interior, domestic and abroad three-layer stereo bar frame be skeleton; Said skeleton internal layer is superimposed with finer wire net sheet, and the outside, said skeleton middle level is equipped with the flame-retarded foamed plastic plate and forms " instant template "; The cage of reinforcement upper strata in this plate outside is wiped with the waterproofing course made from waterproofing mortar; It in the said skeleton, between the internal layer cast-in-place concrete bearing layer.

2, as said a kind of cast-in-place " instant template " the multi-functional outer insulated wall plate of formula that is used for of claim 1, it is characterized in that: cage of reinforcement is made of through welding with horizontal thicker wire vertical crude steel silk screen fin of processing welding in advance; The thicker wire diameter is 2.1～12.0mm, is 50～500mm with horizontal steel wire spacing longitudinally, being connected to perpendicular quadrature or being certain angle between the thicker wire.

3, as said a kind of cast-in-place " instant template " the multi-functional outer insulated wall plate of formula that is used for of claim 1, it is characterized in that net sheet steel wire for for corner angle, the conversion diameter is 1.0～3.0mm, its mesh assumes diamond in shape or other non-square shape in non-garden; The steel wire spacing of net sheet is 3～10mm.

4, as said a kind of cast-in-place " instant template " the multi-functional outer insulated wall plate of formula that is used for of claim 1, it is characterized in that said waterproofing course also is combined with decorative layer outward.

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