Steel slag wear-resistant floor with heat preservation and sound insulation functions

Abstract

The utility model discloses a steel slag wear-resistant terrace with heat preservation and sound insulation functions, which comprises a foundation floor, an adhesion agent layer I, a light mortar layer, an adhesion agent layer II, a steel slag concrete layer and a facing layer which are sequentially laid layer by layer, the steel slag wear-resistant terrace is simple in structure, convenient to lay and firm in interlayer combination, and steel slag is used as concrete aggregate, so that the steel slag wear-resistant terrace has a good heat preservation and sound insulation effect. The technical blank that the waste steel slag is not applied to the wear-resistant concrete terrace at present can be filled, the steel slag is used as the concrete aggregate, a large amount of stockpiled steel slag can be efficiently consumed, resource utilization of the steel slag is achieved, meanwhile, the current situation that sand and stone aggregate supply is increasingly short in the building material industry can be relieved to a great extent, and the construction cost is reduced. And the green and sustainable development process of the building material industry is promoted. The steel slag wear-resistant terrace has the functions of heat preservation and sound insulation, is low in construction cost and convenient to popularize and use, and meanwhile, the steel slag and the desulfurized gypsum are mainly adopted as raw materials, so that steel slag and desulfurized gypsum waste materials are fully recycled, and the energy-saving and environment-friendly effects are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of floor structures, in particular to a steel slag wear-resistant floor with heat preservation and sound insulation functions based on solid waste resource utilization. Background Art

[0002] Wear-resistant concrete floors have the advantages of being able to withstand heavy pressure, have strong wear resistance, not generate dust, have enhanced oil resistance, resist penetration, and be easy to clean. They are usually used in sites with heavy friction, easy damage, and high impact. The components of steel slag mainly include the lining materials eroded during the steelmaking process, oxides formed by the metal elements contained in molten iron and scrap steel, sediment, slag-forming agents, coolants, oxidants, deoxidation products, desulfurization products, etc., so steel slag has excellent properties such as high hardness, good wear resistance, and corrosion resistance. Aggregate accounts for about 70% of the concrete in wear-resistant concrete floors. If steel slag is used as aggregate in wear-resistant concrete and then used in the construction of wear-resistant floors, it will not only improve the performance of the wear-resistant floor, but also facilitate the effective utilization of steel slag, thereby effectively solving the problems of resource waste, land occupation, and environmental pollution caused by the current large-scale discharge of waste steel slag.

[0003] However, there is currently no technology for applying waste steel slag in wear-resistant floors. Based on this, the utility model proposes a steel slag wear-resistant floor with thermal insulation and sound insulation functions. Utility Model Content

[0004] The purpose of the utility model is to provide a new type of steel slag wear-resistant floor with thermal insulation and sound insulation functions, wherein the lightweight mortar layer has the functions of lightweight, thermal insulation and sound insulation, and the steel slag concrete layer has the function of wear resistance. It can not only fill the technical gap of not applying waste steel slag in wear-resistant floors, but also use steel slag as concrete aggregate, which can efficiently absorb a large amount of stockpiled steel slag and realize the resource utilization of steel slag. At the same time, it can also alleviate the increasingly scarce supply of sand and stone aggregates in the building materials industry to a great extent, and promote the process of green and sustainable development of the building materials industry.

[0005] To achieve the above purpose, the present invention provides the following solutions:

[0006] The utility model provides a steel slag wear-resistant floor with heat preservation and sound insulation functions, comprising a basic floor surface, a first interface agent layer, a lightweight mortar layer, a second interface agent layer, a steel slag concrete layer and a finishing layer which are arranged in sequence.

[0007] Preferably, the steel slag aggregate playing a supporting role in the steel slag concrete layer is at least one of converter steel slag and electric furnace steel slag.

[0008] Preferably, the steel slag has a particle size of 10 mesh to 100 mesh and a Mohs hardness of 5 to 7.

[0009] Preferably, the lightweight mortar layer is a desulfurized gypsum mortar layer, and its thickness is 20 mm to 30 mm.

[0010] Preferably, the thickness of the lightweight mortar layer is 20 mm, 22 mm, 25 mm or 28 mm.

[0011] Preferably, the thickness of the steel slag concrete layer is 15 mm to 25 mm.

[0012] Preferably, the thickness of the steel slag concrete layer is 15 mm, 18 mm, 20 mm or 23 mm.

[0013] Preferably, the thickness of the first interface agent layer and / or the second interface agent layer is 1 mm to 2 mm.

[0014] Preferably, the thickness of the first interface agent layer and the second interface agent layer is 1.5 mm.

[0015] Preferably, the thickness of the lightweight mortar layer is 20 mm, and the thickness of the steel slag concrete layer is 23 mm; alternatively, the thickness of the lightweight mortar layer is 22 mm, and the thickness of the steel slag concrete layer is 20 mm; alternatively, the thickness of the lightweight mortar layer is 25 mm, and the thickness of the steel slag concrete layer is 18 mm; alternatively, the thickness of the lightweight mortar layer is 28 mm, and the thickness of the steel slag concrete layer is 15 mm.

[0016] Compared with the prior art, the utility model has achieved the following technical effects:

[0017] The steel slag wear-resistant floor proposed in the present invention adopts a structure in which a foundation floor, a first interface agent layer, a lightweight mortar layer, a second interface agent layer, a steel slag concrete layer, and a finishing layer are laid in sequence. The structure is simple, easy to lay, and the interlayer bonding is strong. Steel slag is used as a concrete aggregate, so that the steel slag concrete layer has a wear-resistant function, and the lightweight mortar layer has lightweight, heat-insulating, and sound-insulating functions. Based on this, a steel slag wear-resistant floor with heat-insulating and sound-insulating functions is formed. It not only fills the technical gap of the current lack of steel slag in wear-resistant flooring, but also uses steel slag as a concrete aggregate to efficiently dispose of a large amount of stored steel slag, realizing the resource utilization of steel slag. At the same time, it can also greatly alleviate the current situation of the increasingly scarce supply of sand and stone aggregates in the building materials industry, and promote the process of green and sustainable development of the building materials industry. The above-mentioned steel slag wear-resistant floor has low construction cost, has heat-insulating and sound-insulating functions, and is easy to promote and use. At the same time, it uses steel slag as the aggregate of the steel slag concrete layer, so that the steel slag waste is fully recycled, energy-saving, environmentally friendly, economical and durable.

[0018] In some technical solutions disclosed in the present utility model, the lightweight mortar layer is a desulfurized gypsum mortar layer, that is, desulfurized gypsum is used in the lightweight mortar, which not only ensures the lightweight, thermal insulation and sound insulation functions of the lightweight mortar layer, but also fills the technical gap of the current non-application of desulfurized gypsum in wear-resistant floors, so that the desulfurized gypsum waste can be fully recycled, which is energy-saving, environmentally friendly, economical and durable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic structural diagram of the steel slag wear-resistant floor disclosed in the utility model.

[0021] In the figure: 100, steel slag wear-resistant floor; 1, foundation floor; 2, interface agent layer one; 3, lightweight mortar layer; 4, interface agent layer two; 5, steel slag concrete layer; 6, finishing layer. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] The purpose of this utility model is to provide a new type of steel slag wear-resistant floor with thermal insulation and sound insulation functions, which can not only fill the technical gap of not applying waste steel slag in wear-resistant flooring, but also use steel slag as concrete aggregate, which can efficiently absorb a large amount of stockpiled steel slag and realize the resource utilization of steel slag. At the same time, it can also greatly alleviate the increasingly scarce supply of sand and stone aggregates in the building materials industry and promote the green and sustainable development of the building materials industry.

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0025] Example 1

[0026] This embodiment provides a steel slag wear-resistant floor 100, such as Figure 1As shown, it includes a foundation floor 1, an interface agent layer 2, a lightweight mortar layer 3, an interface agent layer 4, a steel slag concrete layer 5, and a finishing layer 6, which are laid in sequence. This floor has a simple structure, is easy to lay, and has strong interlayer bonding. The use of steel slag as concrete aggregate makes the steel slag concrete layer wear-resistant, and the lightweight mortar layer is lightweight, heat-insulating, and sound-insulating, thus forming a steel slag wear-resistant floor with heat-insulating and sound-insulating functions.

[0027] First, the foundation floor 1 is cleaned and repaired. After confirming that the floor is dry, flat, and free of cracks, an interface agent is applied to form interface agent layer 1 2. After interface agent layer 1 2 dries, lightweight mortar is applied to form lightweight mortar layer 3. After lightweight mortar layer 3 solidifies, an interface agent is applied to form interface agent layer 2 4. After interface agent layer 2 4 dries, steel slag wear-resistant concrete is applied to form steel slag concrete layer 5. After steel slag concrete layer 5 solidifies, a finishing layer 6 is applied. Interface agent layer 1 2 and interface agent layer 2 4 form films at room temperature, with good film-forming properties and strong bonding strength, ensuring better adhesion between the foundation floor 1 and lightweight mortar layer 3, and between the lightweight mortar layer 3 and steel slag concrete layer 5. Interface agent layer 1 2 and interface agent layer 2 4 also seal gaps on the lower and upper surfaces of lightweight mortar layer 3, respectively.

[0028] In this embodiment, the thickness of the interface agent layer 1 2 and the interface agent layer 2 4 are preferably 1.5 mm.

[0029] In this embodiment, the lightweight mortar layer 3 is a desulfurized gypsum mortar layer, which is mainly composed of desulfurized building gypsum, lightweight aggregate, additives, etc., wherein the desulfurized building gypsum is: desulfurized building gypsum obtained by calcining the waste residue generated by flue gas desulfurization in a coal-fired power plant, wherein the mass percentage of β-hemihydrate gypsum (β-CaSO4·1 / 2H2O) is ≥90%; the lightweight mortar layer 3 has the functions of lightweight, heat preservation and sound insulation, and its thickness is preferably 20 mm.

[0030] In this embodiment, the slag concrete layer 5 is composed of desulfurized building gypsum, slag sand, and additives. The desulfurized building gypsum is obtained by calcining waste slag from flue gas desulfurization in coal-fired power plants, containing 90% or more of β-hemihydrate gypsum (β-CaSO4·1 / 2H2O). The slag sand is fine aggregate made from converter or electric furnace slag that complies with the YB / TO22 standard, crushed, ground, and sieved to a particle size of 10-100 mesh. The slag sand has a reasonable gradation and satisfactory stability, meeting the requirements of GB / T 14684-2011, "Construction Sand." The slag concrete layer 5 exhibits excellent fluidity, strength, and wear resistance, and is preferably 23 mm thick.

[0031] In order to increase the ornamental properties of the steel slag wear-resistant floor 100, a ground finishing layer 6 is laid on the upper surface of the steel slag concrete layer 5. After solidification, the layers are combined into one to form the steel slag wear-resistant floor 100.

[0032] Example 2

[0033] This embodiment provides a steel slag wear-resistant floor 100, such as Figure 1 As shown, it includes a basic floor 1, an interface agent layer 1 2, a lightweight mortar layer 3, an interface agent layer 2 4, a steel slag concrete layer 5 and a finishing layer 6 which are arranged in sequence.

[0034] First, the foundation floor 1 is cleaned and repaired. After confirming that the floor is dry, flat, and free of cracks, an interface agent is applied to form interface agent layer 1 2. After interface agent layer 1 2 dries, lightweight mortar is applied to form lightweight mortar layer 3. After lightweight mortar layer 3 solidifies, an interface agent is applied to form interface agent layer 2 4. After interface agent layer 2 4 dries, steel slag wear-resistant concrete is applied to form steel slag concrete layer 5. After steel slag concrete layer 5 solidifies, a finishing layer 6 is applied. Interface agent layer 1 2 and interface agent layer 2 4 form films at room temperature, with good film-forming properties and strong bonding strength, ensuring better adhesion between the foundation floor 1 and lightweight mortar layer 3, and between the lightweight mortar layer 3 and steel slag concrete layer 5. Interface agent layer 1 2 and interface agent layer 2 4 also seal gaps on the lower and upper surfaces of lightweight mortar layer 3, respectively.

[0035] In this embodiment, the thickness of the interface agent layer 1 2 and the interface agent layer 2 4 are preferably 1.5 mm, and a film can be formed at room temperature.

[0036] In this embodiment, the lightweight mortar layer 3 is a desulfurized gypsum mortar layer, which is mainly composed of desulfurized building gypsum, lightweight aggregate, additives, etc., wherein the desulfurized building gypsum is: desulfurized building gypsum obtained by calcining the waste residue generated by flue gas desulfurization in a coal-fired power plant, wherein the mass percentage of β-hemihydrate gypsum (β-CaSO4·1 / 2H2O) is ≥90%; the lightweight mortar layer 3 has the functions of lightweight, heat preservation and sound insulation, and its thickness is preferably 22 mm.

[0037] In this embodiment, the slag concrete layer 5 is composed of desulfurized building gypsum, slag sand, and additives. The desulfurized building gypsum is obtained by calcining waste slag from flue gas desulfurization in coal-fired power plants, containing 90% or more of β-hemihydrate gypsum (β-CaSO4·1 / 2H2O). The slag sand is fine aggregate made from converter or electric furnace slag that complies with the YB / TO22 standard, crushed, ground, and sieved to a particle size of 10-100 mesh. The slag sand has a reasonable gradation and satisfactory stability, meeting the requirements of GB / T 14684-2011, "Construction Sand." The slag concrete layer 5 exhibits excellent fluidity, strength, and wear resistance, and is preferably 20 mm thick.

[0038] In order to increase the ornamental properties of the steel slag wear-resistant floor 100, a ground finishing layer 6 is laid on the upper surface of the steel slag concrete layer 5. After solidification, the layers are combined into one to form the steel slag wear-resistant floor 100.

[0039] Example 3

[0040] This embodiment provides a steel slag wear-resistant floor 100, such as Figure 1 As shown, it includes a basic floor 1, an interface agent layer 1 2, a lightweight mortar layer 3, an interface agent layer 2 4, a steel slag concrete layer 5 and a finishing layer 6 which are arranged in sequence.

[0041] First, the foundation floor 1 is cleaned and repaired. After ensuring that the floor is dry, flat, and free of cracks, an interface agent is applied to form interface agent layer 1 (2). After interface agent layer 1 (2) dries, lightweight mortar is applied to form lightweight mortar layer 3. After lightweight mortar layer 3 solidifies, an interface agent is applied to form interface agent layer 2 (4). After interface agent layer 2 (4) dries, steel slag wear-resistant concrete is applied to form steel slag concrete layer 5. After steel slag concrete layer 5 solidifies, a finishing layer 6 is applied. Interface agent layer 1 (2) and interface agent layer 2 (4) enhance adhesion between the foundation floor 1 and lightweight mortar layer 3, and between the lightweight mortar layer 3 and steel slag concrete layer 5. Interface agent layer 1 (2) and interface agent layer 2 (4) also seal gaps on the lower and upper surfaces of lightweight mortar layer 3, respectively.

[0042] In this embodiment, the thickness of the interface agent layer 1 2 and the interface agent layer 2 4 are preferably 1.5 mm, and they can form films at room temperature with good film-forming effect and strong bonding force.

[0043] In this embodiment, the lightweight mortar layer 3 is a desulfurized gypsum mortar layer, which is mainly composed of desulfurized building gypsum, lightweight aggregate, additives, etc., wherein the desulfurized building gypsum is: desulfurized building gypsum obtained by calcining the waste residue generated by flue gas desulfurization in a coal-fired power plant, wherein the mass percentage of β-hemihydrate gypsum (β-CaSO4·1 / 2H2O) is ≥90%; the lightweight mortar layer 3 has the functions of lightweight, heat preservation and sound insulation, and its thickness is preferably 25 mm.

[0044] In this embodiment, the slag concrete layer 5 is composed of cement, slag sand, and additives. The cement is ordinary Portland cement with a strength grade of 42.5. The slag sand is fine aggregate made from converter or electric furnace slag that complies with the YB / TO22 standard, crushed, ground, and sieved to a particle size of 10-100 mesh. It has a reasonable gradation and satisfactory stability, meeting the requirements of GB / T 14684-2011, "Construction Sand." The slag concrete layer 5 exhibits good fluidity, high strength, and wear resistance. Its thickness is preferably 18 mm.

[0045] In order to increase the ornamental properties of the steel slag wear-resistant floor 100, a ground finishing layer 6 is laid on the upper surface of the steel slag concrete layer 5. After solidification, the layers are combined into one to form the steel slag wear-resistant floor 100.

[0046] Example 4

[0047] This embodiment provides a steel slag wear-resistant floor 100, such as Figure 1 As shown, it includes a basic floor 1, an interface agent layer 1 2, a lightweight mortar layer 3, an interface agent layer 2 4, a steel slag concrete layer 5 and a finishing layer 6 which are arranged in sequence.

[0048] First, the foundation floor 1 is cleaned and repaired. After confirming that the floor is dry, flat, and free of cracks, an interface agent is applied to form interface agent layer 1 2. After interface agent layer 1 2 dries, lightweight mortar is applied to form lightweight mortar layer 3. After lightweight mortar layer 3 solidifies, an interface agent is applied to form interface agent layer 2 4. After interface agent layer 2 4 dries, steel slag wear-resistant concrete is applied to form steel slag concrete layer 5. After steel slag concrete layer 5 solidifies, a finishing layer 6 is applied. Interface agent layer 1 2 and interface agent layer 2 4 form films at room temperature, with good film-forming properties and strong bonding strength, ensuring better adhesion between the foundation floor 1 and lightweight mortar layer 3, and between the lightweight mortar layer 3 and steel slag concrete layer 5. Interface agent layer 1 2 and interface agent layer 2 4 also seal gaps on the lower and upper surfaces of lightweight mortar layer 3, respectively.

[0049] In this embodiment, the thickness of the interface agent layer 1 2 and the interface agent layer 2 4 are preferably 1.5 mm, and a film can be formed at room temperature.

[0050] In this embodiment, the lightweight mortar layer 3 is a desulfurized gypsum mortar layer, which is mainly composed of desulfurized building gypsum, lightweight aggregate, additives, etc., wherein the desulfurized building gypsum is: desulfurized building gypsum obtained by calcining the waste residue generated by flue gas desulfurization in a coal-fired power plant, wherein the mass percentage of β-hemihydrate gypsum (β-CaSO4·1 / 2H2O) is ≥90%; the lightweight mortar layer 3 has the functions of lightweight, heat preservation and sound insulation, and its thickness is preferably 28 mm.

[0051] In this embodiment, the slag concrete layer 5 is composed of cement, slag sand, and additives. The cement is ordinary Portland cement with a strength grade of 52.5. The slag sand is fine aggregate made from converter or electric furnace slag that complies with the YB / TO22 standard, crushed, ground, and sieved to a particle size of 10-100 mesh. It has a reasonable gradation and satisfactory stability, meeting the requirements of GB / T 14684-2011, "Construction Sand." The slag concrete layer 5 exhibits good fluidity, high strength, and wear resistance. Its thickness is preferably 15 mm.

[0052] In order to increase the ornamental properties of the steel slag wear-resistant floor 100, a ground finishing layer 6 is laid on the upper surface of the steel slag concrete layer 5. After solidification, the layers are combined into one to form the steel slag wear-resistant floor 100.

[0053] In combination with the above-mentioned embodiments 1 to 4, the advantages of the steel slag wear-resistant floor 100 proposed by the present invention are:

[0054] (1) After solidification, electric furnace slag is mostly dark granular material, rough and porous, angular, with a low content of flaky particles, and a Mohs hardness of 5 to 7. It is tough and not easy to break, and can play a skeleton support role in the floor.

[0055] (2) Steel slag has a certain potential cementing activity, which has a positive effect on improving the bonding strength and interface structure between aggregates and aggregates, and between aggregates and cementitious materials. The cement hydration products in the transition zone of the steel slag aggregate concrete interface are dense in structure, the interface is tightly bonded, no directional Ca(OH)2 is generated, and the surface of the steel slag aggregate is covered with hydration products such as CSH gel, indicating that steel slag as concrete aggregate has good bonding strength with cement paste. This is because some C2S and C3S mineral components similar to silicate cement clinker contained in steel slag are integrated with the cement that penetrates into the pores, improving the interface structure between aggregate and cement paste. At the same time, steel slag is a porous structure with a rough surface, which can better combine with cement hydration products, so that the hydration products can fully and evenly wrap the steel slag, and the steel slag and cement are tightly bonded. Using steel slag as concrete aggregate can significantly improve the interface transition zone between aggregate and paste, thereby improving the structure of concrete.

[0056] (3) The stability of steel slag directly determines whether it can be used in concrete. The low expansion rate of steel slag is mainly due to the fact that the total calcium oxide content in electric furnace steel slag is much lower than that of ordinary electric furnace steel slag (CaO content is about 50%). In addition, after the slag is discharged from the electric furnace, it is naturally piled up in the open air and aged, which further reduces the free calcium oxide and free magnesium oxide in it, thus meeting the basic requirements for use in building materials.

[0057] (4) Steel slag concrete has extremely high wear resistance, flexural strength and later strength durability, and is a very good non-metallic inorganic mineral material for road surface materials.

[0058] (5) In the steel slag wear-resistant floor, a lightweight mortar layer is prepared from desulfurized building gypsum. The lightweight mortar layer has the functions of lightness, heat preservation and sound insulation, so that the steel slag wear-resistant floor also has the functions of heat preservation and sound insulation.

[0059] The steel slag wear-resistant floor 100 proposed in the present invention is a steel slag wear-resistant floor with thermal insulation and sound insulation functions. It has a simple structure and is easy to lay. Using steel slag as a concrete aggregate can not only fill the technical gap of not currently using waste steel slag and desulfurized gypsum in wear-resistant floors, but also using steel slag as a concrete aggregate can efficiently absorb a large amount of stockpiled steel slag, realizing the resource utilization of steel slag. At the same time, it can also greatly alleviate the current situation of the increasingly scarce supply of sand and stone aggregates in the building materials industry and promote the green and sustainable development of the building materials industry. The above-mentioned steel slag wear-resistant floor 100 has low construction costs and is easy to promote and use. At the same time, it mainly uses steel slag as raw material, so that the steel slag waste is fully recycled, energy-saving, environmentally friendly, economical and durable.

[0060] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A steel slag wear-resistant floor with thermal insulation and sound insulation functions, characterized in that: The invention comprises a foundation floor, a first interface agent layer, a lightweight mortar layer, a second interface agent layer, a steel slag concrete layer and a finishing layer which are arranged in sequence; the steel slag aggregate which plays a supporting role in the steel slag concrete layer is converter slag or electric furnace steel slag which complies with the provisions of the YB / TO22 standard, and the particle size of the steel slag is 10 mesh to 100 mesh, the Mohs hardness is 5 to 7, and the gradation and stability comply with the standard requirements of GB / T 14684-2011 "Sand for Construction"; the lightweight mortar layer is a desulfurized gypsum mortar layer with a thickness of 20 mm to 30 mm; the thickness of the steel slag concrete layer is 15 mm to 25 mm.

2. The steel slag wear-resistant floor with thermal insulation and sound insulation functions according to claim 1 is characterized in that: The thickness of the lightweight mortar layer is 20 mm, 22 mm, 25 mm or 28 mm.

3. The steel slag wear-resistant floor with thermal insulation and sound insulation functions according to claim 1 is characterized in that: The thickness of the steel slag concrete layer is 15 mm, 18 mm, 20 mm or 23 mm.

4. The steel slag wear-resistant floor with thermal insulation and sound insulation functions according to claim 1 is characterized in that: The thickness of the first interface agent layer and / or the second interface agent layer is 1 mm to 2 mm.

5. The steel slag wear-resistant floor with thermal insulation and sound insulation functions according to claim 4 is characterized in that: The thickness of the first interface agent layer and the second interface agent layer is 1.5 mm.

6. The steel slag wear-resistant floor with thermal insulation and sound insulation functions according to claim 5 is characterized in that: The thickness of the lightweight mortar layer is 20 mm, and the thickness of the steel slag concrete layer is 23 mm; alternatively, the thickness of the lightweight mortar layer is 22 mm, and the thickness of the steel slag concrete layer is 20 mm; alternatively, the thickness of the lightweight mortar layer is 25 mm, and the thickness of the steel slag concrete layer is 18 mm; alternatively, the thickness of the lightweight mortar layer is 28 mm, and the thickness of the steel slag concrete layer is 15 mm.

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