Floor sound insulation and heat insulation structure

Abstract

The utility model discloses a floor sound insulation and heat preservation structure, including floor base layer, its characterized in that, floor base layer is provided with sound insulation and heat preservation layer, heat preservation and construction layer and veneer layer in proper order, sound insulation and heat preservation layer includes the waterborne inorganic sound insulation and heat preservation slurry spray coating that brushed on floor base layer, and the waterborne inorganic sound insulation and heat preservation slurry spray coating includes elastic hollow microbead, and elastic hollow microbead is wrapped after being dispersed by high molecular emulsion and is solidified into waterborne inorganic sound insulation and heat preservation slurry spray coating after high molecular emulsion coagulation, and heat preservation and construction layer includes special mortar layer, and the bottom of special mortar is bonded waterborne inorganic sound insulation and heat preservation slurry spray coating after being formed by pouring, and the top is bonded veneer layer, the floor structure of the utility model has good sound insulation and heat preservation performance.

Description

Technical Field

[0001] This utility model relates to the field of building thermal insulation and sound insulation technology, and in particular to a floor slab sound insulation and thermal insulation structure. Background Technology

[0002] As people's living standards improve, their demands for the comfort and quietness of their living environment are increasing. Floor slabs, as a crucial structural component of buildings, directly impact residents' quality of life with their sound insulation and thermal insulation performance. Traditional floor slabs have limitations in sound insulation and thermal insulation, making it difficult to meet the needs of modern buildings. For example, ordinary reinforced concrete floor slabs have a high heat transfer coefficient, leading to easy heat loss from the room and increased energy consumption. Simultaneously, they are ineffective at blocking impact noise and airborne noise, easily causing noise interference between floors or even between different rooms within the same unit. Existing sound insulation and thermal insulation structures, such as simply laying insulation materials or using a single sound insulation structure, often suffer from a series of problems including complex construction, unsatisfactory results, and poor durability.

[0003] Therefore, developing a sound insulation and heat preservation structure for floor slabs that is effective, reliable, and durable has significant practical implications. Utility Model Content

[0004] In view of the shortcomings of the prior art, the present invention provides a floor slab sound insulation and thermal insulation structure, which aims to improve the sound insulation and thermal insulation performance of the floor slab to meet the needs of modern buildings for a high-quality living environment.

[0005] To achieve the above objectives, the embodiments of this utility model adopt the following technical solutions:

[0006] A floor slab sound insulation and heat insulation structure includes a floor slab base layer, on which a sound insulation and heat insulation layer, a heat insulation integral layer and a finishing layer are sequentially disposed;

[0007] The sound insulation and heat preservation layer includes a water-based inorganic sound insulation and heat preservation slurry spraying layer applied to the floor slab base layer. The water-based inorganic sound insulation and heat preservation slurry spraying layer contains elastic hollow microspheres. After the elastic hollow microspheres are dispersed, they are encapsulated by a polymer emulsion and solidified into the water-based inorganic sound insulation and heat preservation slurry spraying layer after the polymer emulsion solidifies.

[0008] The thermal insulation layer includes a special mortar layer. After the special mortar is poured and formed, the bottom of the special mortar is bonded to the water-based inorganic sound insulation and thermal insulation slurry spray layer, and the top of the special mortar is bonded to the decorative layer.

[0009] By adopting the above technical solution, a water-based inorganic sound insulation and heat insulation slurry spray coating is used as a sound insulation and heat insulation layer, and a special mortar layer is used as a heat insulation integral layer, so that the floor slab has good sound insulation and heat insulation performance.

[0010] According to one aspect of the present invention, a wall is provided on the floor slab base, and a water-based inorganic sound insulation and heat preservation mortar edge protection layer is provided at the connection between the wall and the floor slab base.

[0011] According to one aspect of this utility model, the water-based inorganic sound insulation and heat preservation slurry edge protection layer extends from the floor slab base layer and is flush with the finishing layer.

[0012] According to one aspect of this utility model, a skirting board is provided on the outer side of the water-based inorganic sound insulation and heat preservation slurry edge protection layer.

[0013] According to one aspect of this utility model, a steel mesh is laid in the special mortar layer.

[0014] According to one aspect of the present invention, the floor slab sound insulation and heat insulation structure further includes a reflective heat insulation film, which is disposed between the sound insulation and heat insulation layer and the heat insulation integral layer to block the downward transfer of heat.

[0015] According to one aspect of the present invention, the floor slab sound insulation and heat preservation structure further includes an alkali-resistant mesh fabric, which is disposed between the finishing layer and the heat preservation integral layer.

[0016] According to one aspect of the present invention, the alkali-resistant mesh fabric includes a medium-alkali glass fiber mesh fabric and a polymer alkali-resistant coating coated on the surface of the medium-alkali glass fiber mesh fabric.

[0017] According to one aspect of this utility model, the thickness of the water-based inorganic sound insulation and heat preservation slurry spray coating is 3 mm.

[0018] According to one aspect of this utility model, the thickness of the special mortar layer is 40mm or 50mm.

[0019] The beneficial effects of this utility model are as follows: First, by using a YM water-based inorganic sound-insulating and heat-insulating slurry spray coating as a sound-insulating and heat-insulating layer and a YM special mortar layer as a heat-insulating integral layer, the floor slab has excellent sound-insulating and heat-insulating performance. Second, the YM special mortar has high strength and crack resistance after hardening, and the addition of steel mesh and alkali-resistant mesh further enhances the structural strength and crack resistance of the heat-insulating integral layer and extends its service life. Third, it can adapt to various application scenarios. This structure can be well integrated with underfloor heating systems, and the thermal efficiency of the underfloor heating system is improved by setting up a reflective heat insulation film. Finally, the radioactive nuclide limits of the constituent materials meet the standards, the combustion performance rating is high, and it meets relevant fire prevention, smoke prevention, and toxicity requirements, making it environmentally friendly and safe. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the floor slab sound insulation and heat preservation structure described in this utility model;

[0022] Figure 2 This is a schematic diagram of the sound insulation and heat preservation structure of the floor slab with underfloor heating system described in this utility model. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] The first embodiment of this utility model:

[0025] Figure 1 This invention demonstrates a floor slab sound insulation and heat preservation structure, including a floor slab base layer 4, on which a sound insulation and heat preservation layer 3, a heat preservation integral layer 2, and a decorative layer 1 are sequentially arranged.

[0026] Among them, the base layer 4 of the floor slab is a reinforced concrete structure. Before construction, it is necessary to ensure that the surface of the base layer 4 of the floor slab is flat, clean, and free of oil, dust and debris.

[0027] Finishing layer 1 is a structural layer that serves both protective and decorative purposes. It can only be constructed after the insulation layer 2 has met design specifications. The construction process and material selection for finishing layer 1 should be based on design requirements. Common finishing layer materials include ceramic tiles, wood flooring, and cement mortar, among others, allowing for independent selection. During construction, strict adherence to the finishing layer material specifications is essential to ensure the quality and aesthetics of finishing layer 1.

[0028] The sound insulation and thermal insulation layer 3 includes a YM water-based inorganic sound insulation and thermal insulation slurry spray coating. Here, the YM water-based inorganic sound insulation and thermal insulation slurry is a polymer material synthesized from high-molecular styrene-acrylic emulsion and elastic hollow microspheres. This polymer material has the functions of sound insulation and vibration reduction as well as thermal insulation for solid sound insulation.

[0029] Among them, high-molecular-weight styrene-acrylic emulsion is a high-molecular-weight copolymer dispersion system prepared by emulsion polymerization of styrene and acrylate monomers. Its core characteristic lies in combining the rigidity of styrene with the flexibility of acrylate, forming a water-based emulsion with excellent film-forming properties, adhesion, and weather resistance. This material is widely used in architectural coatings, adhesives, textile finishing agents, and other fields, and is especially suitable for the production of environmentally friendly water-based coatings. Elastic hollow microspheres achieve sound and heat insulation through their hollow structure, and their elastic properties provide shock absorption. The materials can be glass, ceramics, polymers, or composite materials; a balance between performance and cost must be struck when selecting them. Of course, the specific size of the elastic hollow microspheres can also be selected according to requirements; no special limitations are imposed here.

[0030] To enhance the workability, stability, and final performance of the slurry, appropriate additives can be added. Different types of additives have different functions. For example, dispersants (such as polycarboxylate) ensure uniform dispersion of microspheres and prevent agglomeration; thickeners (such as hydroxyethyl cellulose and bentonite) adjust the viscosity of the slurry and prevent sagging; film-forming aids (such as alcohol ester-12) promote the film formation of polymer emulsions and improve the density of the coating; flame retardants (such as aluminum hydroxide and expanded graphite) can improve the fire resistance rating of the material. Of course, additives can be added according to the construction requirements, and no special restrictions are imposed here.

[0031] In this embodiment, the performance indicators of YM water-based inorganic sound insulation and heat preservation mortar need to meet the following standards to ensure sound insulation performance: thermal conductivity ≤ 0.030 W / (m·K), density ≥ 1.1 g / cm³ 3 It has an oxygen index ≥37%, adhesion ≥5MPa, and its fire resistance meets the requirements for delayed density, smoke toxicity, and low flame spread.

[0032] When applying the sound insulation layer 3, the YM water-based inorganic sound insulation slurry is stirred evenly according to the product instructions. Using a spraying device, the YM water-based inorganic sound insulation slurry is evenly sprayed onto the floor slab substrate 4 to form a 3.0mm thick sound insulation layer 3. During the spraying process, the spraying pressure and thickness are strictly controlled to ensure that the sound insulation layer 3 is uniform and consistent, without any missed areas or drips. After solidification, the elastic hollow microspheres are fixed in the polymer emulsion, thus forming the YM water-based inorganic sound insulation slurry spray coating.

[0033] The thermal insulation layer 2 includes a YM special mortar layer. Here, the YM special mortar is a dry mix composed of ordinary silicate cement, fine and clean special aggregates, partially clean recycled concrete fine aggregates, and functional additives. This dry mix is ​​prepared by adding water in a specific ratio before use. After hardening, it has high strength and good crack resistance. In this example, the performance indicators of the YM special mortar are: dry density ≤ 720 kg / m³. 3Thermal conductivity ≤0.11W / (m·K), compressive strength ≥20.0MPa, volumetric water absorption ≤20%, tensile bond strength ≥0.25MPa, compressive shear bond strength ≥60, water resistance ≤0.2MPa, linear shrinkage ≤0.30%, softening coefficient ≤0.7, radionuclide limits meet the requirements of internal exposure index IRa ≤1.0 and external exposure index Iγ ≤1.0, setting time initial setting ≥2.0h and final setting ≤4.0h, and combustion performance rating is A2.

[0034] Fine and clean special aggregates refer to high-performance inorganic particulate materials with a particle size range of 0.15-2.36mm that have undergone strict screening, washing, and special treatment. Their cleanliness and physicochemical properties are superior to ordinary sand and gravel. Common types include quartz sand, calcined ceramsite, steel slag sand, and glass microspheres. Recycled concrete fine aggregates are recycled materials obtained from waste concrete through crushing, screening, phosphorus separation, water washing, and air classification. Functional additives are chemical or mineral materials added to meet the specific performance requirements of special mortars. They can be classified into various types according to their function, such as workability modifiers, mechanical reinforcing agents, durability enhancers, and functional expanders. These functional additives can be added according to construction requirements, and no special limitations are imposed here.

[0035] During construction, YM special mortar is mixed with water according to the specified water-cement ratio to form a workable mortar. The mixed YM special mortar is then poured evenly onto the steel mesh to form a 40mm thick thermal insulation layer.

[0036] It is easy to understand that there is a wall on the floor slab base 4. In order to further enhance the sound insulation and heat preservation effect of the floor slab, in this embodiment, a YM water-based inorganic sound insulation and heat preservation mortar edge protection layer 5 is provided at the connection between the wall and the floor slab base 4. The YM water-based inorganic sound insulation and heat preservation mortar edge protection layer 5 starts from the floor slab base 4 and is flush with the finishing layer 1. In addition, a skirting board 6 is also installed on the outside of the YM water-based inorganic sound insulation and heat preservation mortar edge protection layer 5 to further protect the YM water-based inorganic sound insulation and heat preservation mortar edge protection layer 5.

[0037] It should be noted that the YM water-based inorganic sound insulation and thermal insulation slurry edge protection layer and the YM water-based inorganic sound insulation and thermal insulation slurry spray layer mentioned above are only different in name. The YM water-based inorganic sound insulation and thermal insulation slurry used in the YM water-based inorganic sound insulation and thermal insulation slurry edge protection layer and the YM water-based inorganic sound insulation and thermal insulation slurry spray layer are the same water-based inorganic sound insulation and thermal insulation slurry. Its composition has been explained above and will not be repeated here.

[0038] In this embodiment, the thickness of the YM water-based inorganic sound insulation and heat preservation slurry spray coating is 3.0 mm, and the thickness of the YM special mortar layer is 40 mm.

[0039] The second embodiment of this utility model:

[0040] The second embodiment of this utility model further discloses a sound insulation and heat preservation structure for floor slabs with underfloor heating system, based on the first embodiment. The specific solution is as follows:

[0041] like Figure 2 As shown, in the case of underfloor heating, compared to the basic structure without underfloor heating in the first embodiment, the sound insulation and heat preservation structure adds two additional layers: a reflective heat insulation film 7 and an alkali-resistant mesh 9. The reflective heat insulation film 7 is placed between the sound insulation and heat preservation layer 3 and the heat preservation layer 2 to block heat transfer downwards, and the alkali-resistant mesh 9 is placed between the finishing layer 1 and the heat preservation layer 2 to further enhance the structural strength and crack resistance of the heat preservation layer 2. It should be noted that when using an underfloor heating system, the underfloor heating pipes 8 are laid inside the heat preservation layer, so compared to the first embodiment, the thickness of the YM special mortar layer in this embodiment is 50mm.

[0042] Among them, the alkali-resistant mesh fabric 9 uses medium-alkali glass fiber mesh fabric as the base fabric, and the surface of the base fabric is coated with a polymer alkali-resistant coating (the composition and function need to be described). In this embodiment, the performance index of the alkali-resistant mesh fabric 9 is: unit area mass ≥160g / m 2 Warp and weft density ≥ 4×4 threads / 25mm, tensile breaking strength ≥ 1650N / 50mm in the warp direction and ≥ 1710N / 50mm in the weft direction, alkali-resistant tensile breaking strength ≥ 1000N / 50mm, alkali-resistant tensile breaking strength retention rate ≥ 50%, and elongation at break ≤ 5%.

[0043] In this embodiment, a steel mesh is also laid in the special mortar layer. The addition of the steel mesh can enhance the structural strength and crack resistance of the thermal insulation layer 2, and facilitate the fixing of the heating pipes. The performance of the steel mesh should comply with the relevant provisions of the current national standard GB / T33281. In this embodiment, the steel mesh is a galvanized welded wire mesh with a mesh size of 20×20 and a wire diameter of not less than 0.3mm. Its performance indicators are as follows: galvanized welded wire mesh with a mesh size of 20×20 and a wire diameter of not less than 0.3mm; allowable deviation of mesh size of ±2%; allowable deviation of wire diameter of ±0.08mm; tensile strength of weld joint >580N; and galvanized layer mass >140g / m². 2 .

[0044] Tests showed that, under the basic structural conditions (a total system thickness of 120mm for the floor slab, 3.0mm for the YM water-based inorganic sound and heat insulation mortar, and 42mm for the YM mortar), the floor slab heat transfer coefficient was ≤1.5W / (m²). 2The weighted normalized impact sound pressure level (K) is <65dB, and the on-site measured weighted normalized impact sound pressure level is ≤65dB, with a weighted impact sound improvement of ≥15dB. It is evident that the floor slab sound insulation and thermal insulation structure of this utility model can significantly improve the sound insulation and thermal insulation effect of the floor slab, thereby creating a quiet and comfortable living environment for residents while reducing energy consumption.

[0045] Weighted normalized impact sound pressure level (BSPR), weighted standardized impact sound pressure level (BSPR), and weighted impact sound improvement are all important terms in architecture used to evaluate the impact sound insulation performance of floor slabs or floor slab structures. Explanations of their specific meanings can be found in textbooks or online.

[0046] The advantages of this utility model are as follows: First, by using a YM water-based inorganic sound-insulating and heat-insulating slurry spray coating as the sound insulation and heat insulation layer, and a YM special mortar layer as the heat insulation integral layer, the floor slab possesses excellent sound insulation and heat insulation performance. Second, the YM special mortar, after hardening, exhibits high strength and crack resistance. The addition of steel mesh and alkali-resistant mesh further enhances the structural strength and crack resistance of the heat insulation integral layer and extends its service life. Third, it can adapt to various application scenarios. This structure is well-suited for underfloor heating systems, and the inclusion of a reflective heat insulation film improves the thermal efficiency of the underfloor heating system. Finally, the radioactive nuclide limits of the constituent materials comply with standards, the combustion performance rating is high, and it meets relevant fire prevention, smoke prevention, and toxicity requirements, making it environmentally friendly and safe. In conclusion, the floor slab sound insulation and heat insulation structure of this utility model has high industrial application value.

[0047] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A floor slab sound insulation and thermal insulation structure, comprising a floor slab base layer (4), characterized in that, The floor slab base layer (4) is provided with a sound insulation and heat preservation layer (3), a heat preservation integral layer (2) and a finishing layer (1) in sequence; The sound insulation and heat preservation layer (3) includes a water-based inorganic sound insulation and heat preservation slurry spraying layer applied to the floor slab base layer (4). The water-based inorganic sound insulation and heat preservation slurry spraying layer contains elastic hollow microspheres. After the elastic hollow microspheres are dispersed, they are wrapped by a polymer emulsion and solidified into the water-based inorganic sound insulation and heat preservation slurry spraying layer after the polymer emulsion solidifies. The thermal insulation layer (2) includes a special mortar layer. After the special mortar is poured and formed, the bottom of the special mortar is attached to the water-based inorganic sound insulation and thermal insulation slurry spray layer, and the top of the special mortar is attached to the decorative layer.

2. The floor slab sound insulation and thermal insulation structure according to claim 1, characterized in that, A wall is provided on the floor slab base (4), and a water-based inorganic sound insulation and heat preservation slurry edge protection layer (5) is provided at the connection between the wall and the floor slab base (4).

3. The floor slab sound insulation and thermal insulation structure according to claim 2, characterized in that, The water-based inorganic sound insulation and heat preservation slurry edge protection layer (5) starts from the floor slab base layer (4) and is flush with the finishing layer (1).

4. The floor slab sound insulation and thermal insulation structure according to claim 3, characterized in that, A skirting board (6) is provided on the outside of the water-based inorganic sound insulation and heat preservation slurry edge protection layer (5).

5. The floor slab sound insulation and thermal insulation structure according to claim 1, characterized in that, The special mortar layer is reinforced with steel mesh.

6. The floor slab sound insulation and thermal insulation structure according to claim 1, characterized in that, The floor slab sound insulation and heat preservation structure also includes a reflective heat insulation film (7), which is placed between the sound insulation and heat preservation layer (3) and the heat preservation integral layer (2) to block the downward transfer of heat.

7. The floor slab sound insulation and thermal insulation structure according to claim 1, characterized in that, The floor slab sound insulation and heat preservation structure also includes alkali-resistant mesh (9), which is disposed between the finishing layer (1) and the heat preservation integral layer (2).

8. The floor slab sound insulation and thermal insulation structure according to claim 7, characterized in that, The alkali-resistant mesh (9) includes a medium-alkali glass fiber mesh and a polymer alkali-resistant coating applied to the surface of the medium-alkali glass fiber mesh.

9. The floor slab sound insulation and thermal insulation structure according to claim 1, characterized in that, The thickness of the water-based inorganic sound insulation and heat preservation slurry spray coating is 3mm.

10. The floor slab sound insulation and thermal insulation structure according to any one of claims 1 to 9, characterized in that, The thickness of the special mortar layer is 40mm or 50mm.

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