CN104652651A - Heat insulation type secondary-post-poured fair-faced concrete wall and construction method thereof - Google Patents

Abstract

The invention relates to a heat insulation type secondary-post-poured fair-faced concrete wall and a construction method thereof. The wall comprises an original structure wall (3), a fair-faced concrete surface layer (1) and a heat insulating sandwich (2), wherein the heat insulating sandwich (2) is stuck to the external surface of the original structure wall (3), the fair-faced concrete surface layer (1) is poured on the heat insulating sandwich (2), a reinforcing mesh (4) is arranged in the fair-faced concrete surface layer (1), and planted bars (5) are arranged in the fair-faced concrete surface layer (1), the heat insulating sandwich (2) and the original structure wall (3). The construction method comprises the steps of treating the original structure wall (3), planting the planted bars (5), mounting the heat insulating sandwich (2), hanging the reinforcing mesh (4), bracketing a formwork and pouring the fair-faced concrete surface layer (1), removing the formwork, curing and the like. The heat insulation type secondary-post-poured fair-faced concrete wall and the construction method thereof have the advantages that the beautified decoration and energy-saving reconstruction of old buildings are realized, and use requirements are met.

Description

A thermal insulation type secondary post-cast clear water concrete wall and its construction method

technical field

The invention relates to a fair-faced concrete wall, and more specifically relates to a heat-preservation type secondary post-poured clear-faced concrete wall and a construction method thereof, belonging to the technical field of building construction.

Background technique

With the rapid development of my country's economic construction and the improvement of people's living standards, people have higher and higher requirements for the function of building walls. In addition to being beautiful and durable, energy saving and environmental protection are also required to meet people's aesthetic and functional requirements for living and working environments. higher requirements.

At present, there are various ways to decorate building walls; however, traditional decoration methods are labor-intensive, time-consuming, expensive, not durable, and some materials emit harmful chemical components, which are not energy-saving and environmentally friendly. Fair-faced concrete, also known as decorative concrete, belongs to one-time pouring molding, without any external decoration, and directly uses the natural surface effect of cast-in-place concrete as the finish, which is different from ordinary concrete , with smooth surface, uniform color, no damage and pollution Only one or two layers of transparent protective agent are applied on the surface, and chemical products such as coatings and finishes are discarded, which is conducive to environmental protection; and because the fair-faced concrete is cast in one time, it does not need to be chiseled or plastered, which reduces a lot of construction costs. Garbage, help protect the environment. At the same time, the thermal insulation performance of the wall is becoming more and more important at the moment when energy conservation and environmental protection are vigorously advocated; therefore, in the beautification decoration and energy-saving renovation of existing buildings, how to achieve both fashionable fair-faced concrete decoration effects and green energy-saving thermal insulation walls Transformation is a big problem that needs to be solved urgently.

Contents of the invention

Aiming at the purpose that the traditional building wall surface decoration method is not energy-saving and environment-friendly, and at the same time needs to realize the thermal insulation function of the wall surface, etc., the invention provides a thermal insulation type secondary post-cast clear water concrete wall and a construction method thereof.

In order to achieve the above object, the technical solution of the present invention is: a thermal insulation type secondary post-cast clear-water concrete wall, including the original structure wall, and also includes a clear-faced concrete surface and a heat-insulating interlayer, and the heat-insulating interlayer is pasted on the original On the outer surface of the structural wall, the clear-water concrete surface layer is poured on the thermal insulation interlayer, the clear-water concrete surface layer is provided with a steel mesh, and the clear-water concrete surface layer, the thermal insulation interlayer and the original structural wall are provided with planting ribs.

The thickness of the fair-faced concrete surface layer is 60-80mm.

The thickness of the insulation interlayer is 30-40mm.

The insulation interlayer is a polystyrene board with a specification of 40×400×400 mm.

A construction method of thermal insulation type post-pouring fair-faced concrete wall twice, comprising the following steps:

Step 1. Treatment of the original structure wall: chisel off the plaster layer on the outer surface of the original structure wall, loosen the hollows until a solid fresh base surface is exposed, clean up the dust and scum, and repair it with repair mortar;

Step 2. Implanting the planting bar: implanting the planting bar according to the prescribed process;

Step 3. Install the insulation interlayer: use structural glue to paste the insulation material on the outer surface of the treated original structure wall;

Step 4. Hanging the steel mesh: use the planting bar as the support, and hang the steel mesh;

Step 5, supporting the formwork to pour the clear-water concrete surface: according to the clear-water concrete construction technology, support the formwork, and pour the clear-water concrete surface;

Step 6, remove the formwork and complete the construction;

Step 7. Maintenance: According to the construction process requirements of clear-water concrete, maintain the clear-water concrete surface (1) to the design strength through heat preservation and moisturizing measures.

After the step seven, the following steps are also included: repairing and protecting the surface of the fair-faced concrete surface.

Compared with prior art, the beneficial effect of the present invention is:

1, the thermal insulation type fair-faced concrete wall in the present invention comprises original structure wall, fair-faced concrete surface course and insulation interlayer, is provided with steel mesh in the fair-faced concrete surface course, and in the clear-water concrete surface course, heat preservation interlayer and original structure wall Set with planting bars. It overcomes the shortcomings of the traditional building wall decoration method, such as labor-intensive and time-consuming, high cost, not durable, not energy-saving and environmentally friendly, and realizes the decorative effect of fair-faced concrete; at the same time, it realizes the thermal insulation performance of the wall and meets the needs of use.

2. In the wall construction method of the present invention, through the steps of original structure wall treatment, planting reinforcement, installation of insulation interlayer, hanging steel mesh, supporting formwork to pour clear-faced concrete surface, removal of formwork and maintenance, both realized The stylish fair-faced concrete decoration effect can also achieve green and energy-saving wall renovation.

Description of drawings

Fig. 1 is a kind of thermal insulation type secondary post-pouring fair-faced concrete wall structure schematic diagram among the present invention.

In the figure, clear water concrete surface layer 1, thermal insulation interlayer 2, original structure wall 3, steel mesh 4, planting bar 5.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Referring to FIG. 1 , a heat-preserving type secondary post-cast fair-faced concrete wall includes an original structure wall 3 , a clear-faced concrete surface 1 and an insulating interlayer 2 . The thermal insulation interlayer 2 is pasted on the outer surface of the original structure wall 3, and the fair-faced concrete surface layer 1 is poured on the thermal insulation interlayer 2; the thermal insulation interlayer 2 achieves the purposes of thermal insulation, sound insulation, and the like. Described clear-water concrete surface course 1 is provided with reinforcement mesh 4, and in clear-water concrete surface course 1, insulation interlayer 2 and original structure wall body 3, planting reinforcement 5 is arranged; By planting reinforcement 5, clear-water concrete surface course 1, insulation The interlayer 2 is connected and anchored with the original structural wall 3 .

The thickness of the fair-faced concrete surface layer 1 is 60-80mm. The fair-faced concrete surface layer 1 is poured from self-compacting fine stone concrete, and the strength grade of the self-compacting fine stone concrete is C20-C80.

The thickness of the thermal insulation interlayer 2 is 30-40mm. The insulation interlayer 2 usually chooses a polystyrene board with a specification of 40×400×400mm.

The steel mesh 4 is 6200 (two-way), where 6 means that the diameter of the smooth steel bar in the steel mesh 4 is 6mm, and 200 (two-way) means that the orthogonal steel bars in the steel mesh 4 are reinforced in two directions perpendicular to each other. The spacing is 200mm.

The planting bar 5 is 20400 (two-way), where 20 means that the diameter of the threaded steel bar of the planting bar 5 is 20mm, and 400 (two-way) means that the distance between the planting bars 5 in the horizontal and vertical directions of the original structure wall 3 is 400mm .

A construction method of thermal insulation type post-pouring fair-faced concrete wall twice, comprising the following steps:

Step 1. Treatment of the original structure wall 3: Chisel off the plaster layer on the outer surface of the original structure wall 3, loosen the hollows until a solid fresh base surface is exposed, clean up the dust and scum, and repair it with repair mortar.

Step 2, implanting the planting bar 5: implanting the planting bar 5 according to the prescribed process flow. The technological process specified here is generally the technological process stipulated in the "Code for Acceptance of Construction Quality of Building Structure Reinforcement Engineering" (GB 50550-2010).

Step 3: Install the insulation interlayer 2: Paste the insulation material 2 on the outer surface of the treated original structure wall 3 with structural glue.

Step 4, Hanging the steel mesh 4: Hang the steel mesh 4 with the planting bar 5 as a support.

Step 5, supporting the formwork and pouring the fair-faced concrete surface layer 1: according to the fair-faced concrete construction process, supporting the formwork, and pouring the fair-faced concrete surface layer 1.

Step 6. Remove the formwork and complete the construction.

Step 7. Maintenance: According to the construction process requirements of clear-water concrete, maintain the clear-water concrete surface layer 1 to the design strength through heat preservation and moisturizing measures.

Preferably, after the step seven, the following steps are further included: repairing and protecting the surface of the fair-faced concrete surface layer 1 .

In the present invention, a layer of high-strength self-compacting fine stone fair-faced concrete surface layer 1 is poured twice on the outer surface of the original structure wall body 3 to achieve the purpose of decoration and a certain degree of reinforcement and reinforcement effect, and improve and enhance the original structure. The durability of the structural wall 3; and the high thermal insulation effect outside the external wall can not only achieve the energy-saving and environmental protection purposes of thermal insulation, heat insulation, and sound insulation, but also protect the main structure of the building and prolong the service life of the building. The beautification decoration and energy-saving renovation of old buildings meet the needs of use.

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, some simple deduction or replacement can also be made without departing from the concept of the present invention, and the above structures should be regarded as belonging to the protection scope of the present invention.

Claims (6)

1. water bare concrete wall after a heat preserving type secondary, comprise original structure body of wall (3), it is characterized in that: also include clear-water concrete surface layer (1) and heat preservation sandwich layer (2), described heat preservation sandwich layer (2) is pasted onto on original structure body of wall (3) external surface, described clear-water concrete surface layer (1) is built on heat preservation sandwich layer (2), be provided with steel mesh reinforcement (4) in described clear-water concrete surface layer (1), and be provided with bar planting (5) in clear-water concrete surface layer (1), heat preservation sandwich layer (2) and original structure body of wall (3).

2. water bare concrete wall after a kind of heat preserving type secondary according to claim 1, it is characterized in that: described clear-water concrete surface layer (1) thickness is 60-80mm.

3. water bare concrete wall after a kind of heat preserving type secondary according to claim 1, it is characterized in that: described heat preservation sandwich layer (2) thickness is 30-40mm.

4. water bare concrete wall after a kind of heat preserving type secondary according to claim 1, it is characterized in that: the polyphenyl plate of described heat preservation sandwich layer (2) to be specification be 40 × 400 × 400mm.

5. water the construction method of bare concrete wall after a kind of heat preserving type secondary according to claim 1, it is characterized in that, comprise the following steps:

The process of step one, original structure body of wall (3): cut the rendering layer of original structure body of wall (3) external surface, loose hollowing until expose solid fresh basal plane, cleaning dust and scum silica frost, and repair smooth with mending mortar;

Step 2, implantation bar planting (5): implant bar planting (5) by the technological process of regulation;

Step 3, installation heat preservation sandwich layer (2): heat insulating material (2) is pasted on treated original structure body of wall (3) external surface by structure glue;

Step 4, mount steel mesh reinforcement (4): with bar planting (5) for rest, mount steel mesh reinforcement (4);

Step 5, formwork supporting plate build clear-water concrete surface layer (1): by Construction technology of fair-faced concrete, formwork supporting plate, build clear-water concrete surface layer (1);

Step 6, stripping, complete construction;

Step 7, maintenance: by Construction technology of fair-faced concrete requirement, by heat and moisture preserving measure maintenance clear-water concrete surface layer (1) to design strength.

6. water the construction method of bare concrete wall after a kind of heat preserving type secondary according to claim 5, it is characterized in that: after described step 7, also comprise step below: Xiu Se and protection are carried out to clear-water concrete surface layer (1) surface.