CN115874725A - Novel outer wall high-ductility concrete heat-insulating plate and construction steps thereof - Google Patents

Abstract

The invention relates to a novel outer wall high-ductility concrete heat-insulating plate and a construction method thereof, and the novel outer wall high-ductility concrete heat-insulating plate comprises a first high-ductility concrete slab, a sandwich foam heat-insulating layer and a second high-ductility concrete slab, wherein the sandwich foam heat-insulating layer is arranged between the first high-ductility concrete slab and the second high-ductility concrete slab, the first high-ductility concrete slab and the second high-ductility concrete slab are formed by mixing cement, fibers, quartz sand, a water reducing agent, an expanding agent, an antifoaming agent, an additive and water, and the percentage of the cement, the fibers, the quartz sand, the water reducing agent, the expanding agent, the antifoaming agent, the additive and the water is 65%:1.5%:35%:0.3%:0.03%:0.03%:0.01%:13%. The invention has the advantages of good fiber dispersibility, easy stirring, stable quality, high bonding strength, excellent durability and the like.

Description

Novel outer wall high-ductility concrete heat-insulating plate and construction steps thereof

Technical Field

The invention relates to the technical field of building construction, in particular to a novel high-ductility concrete heat-insulating plate for an outer wall and a construction method thereof.

Background

With the acceleration of the urbanization process of China and the improvement of work and environment, the requirements of the building industry on energy conservation, heat preservation, sound insulation and environmental protection are higher and higher. The existing external wall heat insulation board has various types and has various advantages. The external wall insulation board is also called as a building external wall decoration integrated board, the insulation core material adopts an intelligent and permanent establishment novel insulation material, the intelligent and permanent establishment novel insulation material is an only environment-friendly and green insulation material which reaches the fire protection level of A1 standard in the current market, and in addition, the external wall insulation board also has the characteristics of low heat conductivity coefficient, firmness, durability, water and sound insulation, strong freeze-thaw resistance and the like. The external wall insulation board generally has good weather resistance, is tough and firm, and has good shock resistance and impact resistance. The latest layout of the policy of carbon peak reaching and carbon neutralization in China has the advantages that the building energy conservation is more and more emphasized by the society, and the building wall energy consumption accounts for 60-70% of the total energy consumption of the enclosure structure, so that an important work for realizing the building energy conservation is the wall heat insulation technology. The external thermal insulation technology of the external wall is most widely applied. With the updating and upgrading of wall insulation technology, the external wall insulation technology in the market still has the following problems:

1. besides the bonding of the bonding mortar, the cement insulation board is fixed by the anchoring piece, and the cement insulation board is easy to crack, break and other damage phenomena in the process of drilling and fixing the anchoring piece.

2. The durability is low, the strength of the board is low, most of the board is glued between layers, and the layers may fall off in the using process, so that the normal use function of the building is affected.

3. The structure is complicated, and the installation procedure is tedious.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a novel high-ductility concrete heat-insulating board for an outer wall and a construction step thereof, the novel high-ductility concrete heat-insulating board has the advantages of good fiber dispersibility, easiness in stirring, stable quality, high bonding strength and excellent durability, ECC used in the integrated structure has the characteristics of excellent workability and easiness in on-site pouring after being specially matched, the production process is simple, and the manufacturing cost is low.

The technical scheme adopted by the invention for solving the technical problem is as follows: the utility model provides a novel high ductility concrete insulation board of outer wall, including first high ductility concrete slab, double-layered core foam insulation layer and the high ductility concrete slab of second, first high ductility concrete slab and second high ductility concrete slab between be provided with double-layered core foam insulation layer, first high ductility concrete slab and second high ductility concrete slab adopt cement, fibre, quartz sand, water-reducing agent, expanding agent, defoaming agent, admixture, water to mix and form, cement, fibre, quartz sand, water-reducing agent, expanding agent, defoaming agent, admixture, water percentage are 65%:1.5%:35%:0.3%:0.03%:0.03%:0.01%:13 percent.

As a supplement to the technical scheme, a plurality of arc-shaped strip-shaped grooves are formed in both end faces of the sandwich foam heat-insulating layer, and arc-shaped protrusions matched with the arc-shaped strip-shaped grooves are arranged on the first high-ductility concrete plate and the second high-ductility concrete plate.

The utility model provides a novel construction step of high ductility concrete insulation board of outer wall, step one, existing building wall basic unit handles: removing a wall facing layer, removing loose blocks and masonry mortar with serious weathering, cleaning mortar joints, brushing residual ash, blowing off surface floating ash, and pouring water through the wall surface; step two, line-defense typesetting: according to the vertical line hung on the external corner of the building or a straight line laid by a theodolite as a reference line; step three, coating mortar: when the heat insulation board is paved, a point frame method is used, bonding mortar is smeared on the periphery of the heat insulation board, and an exhaust channel with proper specification is reserved on the periphery; step four, pasting the device: when the mortar is adhered, the mortar is tightly connected with the wall surface, the insulation boards are flush, excessive mortar is removed when the mortar is extruded, and the straightness and the flatness of the mortar are checked; step five, fixing the heat insulation board: the novel heat insulation material of the high-ductility heat insulation board has the plate size of 600mm multiplied by 60mm, and each plate is connected with a heat insulation nail by a stainless steel anchoring part and fixed on a wall body base layer.

As a supplement to the technical scheme, in the second step, the external corner is controlled to be vertical, so that the straightness and the levelness of the heat-insulation board are guaranteed.

As a supplement to the technical scheme, in the third step, a bonding mortar round cake is coated on the center diameter, the distance is ensured to be appropriate, and the laying area is up to the standard.

In the fifth step, the plates are tightly adhered to each other and the gap between the core plates is filled with an inorganic sealing material.

In the fifth step, the length of the anchoring part is also judged according to the thickness of the outer wall insulation board.

Has the advantages that: the invention relates to a novel high-ductility concrete heat-insulating plate for an outer wall and a construction step thereof, which improve the overall strength of the material, and have the advantages of simple structure, light dead weight, strong wrapping property and convenient installation. The invention provides a novel heat insulation board which is prefabricated, light in weight, good in heat insulation performance, good in corrosion resistance and impermeability and free of decoration. The heat insulation plate adopts high-ductility concrete to replace cement mortar, and is filled with a heat insulation layer to improve the heat insulation performance. The lightweight high-ductility concrete is prepared by mixing cement, fibers, quartz sand, a Frank water reducer, an expanding agent, a defoaming agent, an additive and water, wherein the volume content of the doped fibers is not more than 2%, the ultimate tensile strain capacity is more than 1%, and the lightweight high-ductility concrete has good crack resistance, impermeability and frost resistance. The light high-ductility concrete has the advantages of attractive appearance and no need of decoration, and reduces the cost.

Drawings

FIG. 1 is a structural view of the present invention;

FIG. 2 is a schematic view of the construction structure of the present invention.

Detailed Description

The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention can be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the claims appended to the present application.

The embodiment of the invention relates to a novel outer wall high-ductility concrete heat-insulating plate and a construction method thereof, and the novel outer wall high-ductility concrete heat-insulating plate comprises a first high-ductility concrete plate 4, a sandwich foam heat-insulating layer 5 and a second high-ductility concrete plate 6, wherein the sandwich foam heat-insulating layer 5 is arranged between the first high-ductility concrete plate 4 and the second high-ductility concrete plate 6, the first high-ductility concrete plate 4 and the second high-ductility concrete plate 6 are prepared by mixing cement, fiber, quartz sand, a water reducing agent, an expanding agent, an antifoaming agent, an additive and water, and the percentage of the cement, the fiber, the quartz sand, the water reducing agent, the expanding agent, the antifoaming agent and the additive is 65%:1.5%:35%:0.3%:0.03%:0.03%:0.01%:13 percent.

The first embodiment is as follows:

the high-ductility concrete is prepared by mixing cement, fibers, quartz sand, a water reducing agent, an expanding agent, a defoaming agent, an additive and water, and the mass mixing ratio is 65%:1.5%:35%:0.3%:0.03%:0.03%:0.01%:13 percent, the ultimate tensile strain reaches more than 1.0 percent, and the ultimate crack width is not more than 200 mu m; the thickness of the inner and outer high-ductility concrete heat-insulating plates is 7-8mm, arc-shaped bulges are uniformly distributed along the inner sides of the two outer protective plates, the thickness of the sandwich heat-insulating layer is 45mm, and concave grooves with uniformly distributed foams are mutually meshed up and down to form a mosaic structure as shown in figure 2. The total thickness of the wallboard is 60mm. The plate size is 600mm x 60mm.

The novel high-ductility concrete heat-insulation board ensures the use function and the service life of the wall body, improves the overall strength of the material, and has the advantages of simple structure, light dead weight, strong wrapping property and convenient installation.

Example two:

high ductility concrete heated board still need use anchor assembly fixed except using the bonding mortar bonding, at drilling and fixed anchor assembly in-process, causes the cement heated board to appear fracture, breakage's damaged phenomenon such as fracture very easily. Each plate is connected with a heat-insulating nail by a stainless steel anchor and fixed on a wall base layer, the length of the anchor is judged according to the thickness of the outer wall heat-insulating plate, and the plates are tightly attached to each other and gaps among the plates are filled with inorganic sealing materials.

After adopting high ductility concrete heated board, solved appear fracture, breakage phenomenon such as rupture in drilling and fixed anchor assembly in-process, not only effectively reduce the damage to the heated board, and whole journey need not the structure adhesive, easy operation has improved the efficiency of construction, has reduced cost and durability good.

The novel high-ductility concrete heat-insulating board for the outer wall and the construction steps thereof provided by the application are introduced in detail, a concrete example is applied in the text to explain the principle and the implementation mode of the application, and the description of the embodiment is only used for helping to understand the method and the core idea of the application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (7)

1. The utility model provides a novel high ductility concrete insulation board of outer wall which characterized in that: the concrete building block comprises a first high-ductility concrete plate (1), a sandwich foam heat-insulating layer (2) and a second high-ductility concrete plate (3), wherein the sandwich foam heat-insulating layer (2) is arranged between the first high-ductility concrete plate (1) and the second high-ductility concrete plate (3), the first high-ductility concrete plate (1) and the second high-ductility concrete plate (3) are prepared by mixing cement, fibers, quartz sand, a water reducing agent, an expanding agent, a defoaming agent, an admixture and water, and the percentages of the cement, the fibers, the quartz sand, the water reducing agent, the expanding agent, the defoaming agent, the admixture and the water are 65%:1.5%:35%:0.3%:0.03%:0.03%:0.01%:13 percent.

2. The novel high-ductility concrete heat-insulating board for the outer wall of claim 1 is characterized in that: and a plurality of arc-shaped strip-shaped grooves are formed in both end faces of the sandwich foam heat-insulating layer (2), and arc-shaped protrusions matched with the arc-shaped strip-shaped grooves are arranged on the first high-ductility concrete plate (1) and the second high-ductility concrete plate (3).

3. The construction steps of the novel high-ductility concrete thermal insulation board for the outer wall as claimed in claim 2 are characterized in that: the method comprises the following specific steps:

step one, existing building wall body base layer treatment: removing a wall facing layer, removing loose blocks and masonry mortar with serious weathering, cleaning mortar joints, brushing residual ash, blowing off surface floating ash, and pouring water through the wall surface;

step two, line-defense typesetting: taking a straight line laid by a theodolite or a vertical line hung at the external corner of the building as a reference line;

step three, coating mortar: when the heat insulation board is paved, a point frame method is used, bonding mortar is smeared on the periphery of the heat insulation board, and an exhaust channel with proper specification is reserved on the periphery;

step four, pasting the device: when the mortar is adhered, the mortar is tightly connected with the wall surface, the insulation boards are flush, excessive mortar is removed when the mortar is extruded, and the straightness and the flatness of the mortar are checked;

step five, fixing the heat insulation board: the novel heat insulation material of the high-ductility heat insulation board has the plate size of 600mm multiplied by 60mm, and each plate is connected with a heat insulation nail by a stainless steel anchoring part and fixed on a wall body base layer.

4. The construction steps of the novel outer wall high-ductility concrete heat-insulating board according to claim 3 are characterized in that: in the second step, the external corner is controlled to be vertical, so that the straightness and the levelness of the heat-insulation board are ensured.

5. The construction steps of the novel high-ductility concrete heat-insulating board for the outer wall according to claim 3 are characterized in that: and in the third step, the central diameter is coated with the bonding mortar round cake, so that the distance is ensured to be proper, and the laying area is up to the standard.

6. The construction steps of the novel outer wall high-ductility concrete heat-insulating board according to claim 3 are characterized in that: and step five, closely attaching the plates and filling gaps among the core materials with inorganic sealing materials.

7. The construction steps of the novel high-ductility concrete heat-insulating board for the outer wall according to claim 3 are characterized in that: and in the fifth step, the length of the anchoring part is also judged according to the thickness of the outer wall insulation board.

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