Fabricated thermal insulation integrated floor slab and manufacturing method

Abstract

The invention relates to the field of assembly type buildings, in particular to an assembly type heat preservation integrated floor slab which comprises a composite floor slab bottom plate, slab bottom distribution bars and a steel bar truss are embedded in the composite floor slab bottom plate, the lower half portion of the steel bar truss is embedded in the composite floor slab bottom plate, and the upper half portion of the steel bar truss is exposed. The composite floor slab is characterized in that the top surface of a bottom plate of the composite floor slab is coated with an adhesive and adheres to nano aerogel felts, the nano aerogel felts are fixed to the bottom plate of the composite floor slab through fixing clamping pieces, and seams of the adjacent spliced nano aerogel felts are filled; a steel bar mesh is laid on the top of the nanometer aerogel felt, plate top distribution bars and longitudinal steel bars are arranged on the exposed portion of the steel bar truss, the plate top distribution bars and the longitudinal steel bars are fixedly connected with the exposed end of the steel bar truss, concrete is cast in place on the top of the nanometer aerogel felt, and a floor slab surface layer is laid on the top of the cast-in-place concrete. The thermal insulation floor is good in thermal insulation performance, the thermal insulation layer is not prone to cracking, and the overall thickness of the floor is small.

Description

Technical Field

[0001] The present invention relates to the field of prefabricated buildings, and in particular to a prefabricated thermal insulation integrated floor slab and a manufacturing method thereof. Background Art

[0002] According to the "Energy-saving Design Standard for Residential Buildings in Hot Summer and Cold Winter Areas", the heat transfer coefficient of the floor of the air-conditioned and heated room in the residential building should not be greater than 2.0w / (m 2 .k), and according to local regulations, the household floor slabs of air-conditioned and heated rooms must meet the requirements and shall not be reduced by trade-off calculations. The insulation treatment methods for floor slabs in the prior art are as follows: reinforced concrete cast-in-place floor slabs are usually used, and an insulation layer is set on the upper part of the cast-in-place floor slab, and then a protective layer is set on the upper part of the insulation layer. The upper and lower surfaces of the insulation layer are at the interface of two different materials. When the temperature changes, different material layers deform to different degrees, which easily leads to stratification and separation from the cast-in-place floor slab. Due to the high insulation requirements, the thickness of the insulation layer set in the prior art is also large, and the structural strength of the insulation layer in the prior art is generally low. Due to the limitations of the building height and construction cost, the thickness of the protective layer on the upper part of the insulation layer cannot be infinitely thickened, so the insulation layer and the overlying concrete protective layer are prone to large-scale cracking due to temperature stress. Summary of the invention

[0003] The present invention firstly discloses an assembled thermal insulation integrated floor slab, which adopts a new thermal insulation material with low thermal conductivity and good tensile and compressive strength as a thermal insulation layer, thereby improving the thermal insulation performance of the thermal insulation floor slab and reducing the overall height of the thermal insulation floor slab.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is: An assembled thermal insulation integrated floor slab comprises a laminated floor slab bottom plate, wherein the laminated floor slab bottom plate is pre-embedded with slab bottom distribution bars and a steel bar truss, wherein the lower half of the steel bar truss is embedded in the laminated floor slab bottom plate, and the upper half of the steel bar truss is exposed; an adhesive is coated on the top surface of the laminated floor slab bottom plate and bonded with a nano aerogel felt, the nano aerogel felt is fixed to the laminated floor slab bottom plate by a fixing clamp, and gaps are filled at the joints of adjacent spliced ​​nano aerogel felts; a steel mesh is laid on the top of the nano aerogel felt, slab top distribution bars and longitudinal steel bars are arranged on the exposed part of the steel bar truss, the slab top distribution bars and the longitudinal steel bars are fixedly connected to the exposed ends of the steel bar truss, concrete is cast on the top of the nano aerogel felt, and a floor surface layer is laid on the top of the cast-in-place concrete.

[0005] The manufacturing method of the above-mentioned assembled thermal insulation integrated floor slab comprises the following steps: Step 1: Lay the prefabricated composite floor slab flat, with the exposed end of the steel truss facing upward; Step 2: Lay the nano aerogel felt on the top of the composite floor slab, and fix each nano aerogel felt on the composite floor slab with a fixing clip, and fill and reinforce the gaps at the joints of adjacent nano aerogel felts; Step 3: Lay a steel mesh on top of the nano aerogel felt; Step 4: The top distribution bars and longitudinal reinforcements are arranged on the upper part of the reinforcement mesh, and the top distribution bars and longitudinal reinforcements are fixedly connected to the exposed ends of the reinforcement trusses; Step 5: Cast concrete on top of the steel mesh; Step 6: After the cast-in-place concrete is cured, lay the floor surface layer on top of the cast-in-place concrete.

[0006] The present invention adopts nano aerogel felt as the thermal insulation layer, which has extremely low thermal conductivity and is flexible. It is easy to fix and can greatly reduce the thickness of the floor insulation layer. On the basis of enhancing the thermal insulation effect of the floor, the overall thickness of the integrated floor can be reduced. The flexible nano aerogel felt can be easily connected with the cast-in-place concrete through the steel mesh and is not easy to delaminate and crack. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 Schematic diagram of the structure of the thermal insulation integrated floor in the embodiment.

[0008] Reference numerals: 1. Composite floor bottom plate; 2. Distribution reinforcement at the bottom of the plate; 3. Steel truss; 4. Nano aerogel felt; 5. Fixing clips; 6. Nano aerogel felt joints; 7. Steel mesh; 8. Cast-in-place concrete; 9. Floor surface layer; 10. Longitudinal reinforcement; 11. Distribution reinforcement at the top of the plate. DETAILED DESCRIPTION

[0009] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0010] This embodiment discloses an assembled thermal insulation integrated floor slab. Figure 1As shown, it includes a composite floor bottom plate 1. The composite floor bottom plate 1 is a prefabricated component in the factory. During prefabrication, the bottom plate distribution bars 2 and the steel trusses 3 are pre-embedded inside the composite floor bottom plate 1, wherein the lower half of the steel trusses 3 are embedded inside the composite floor bottom plate 1, and the upper half of the steel trusses 3 are exposed. After the prefabricated composite floor bottom plate 1 is transported to the construction site, it is laid flat so that the exposed end of the steel trusses 3 faces upward. Then, an adhesive is applied to the top of the composite floor bottom plate 1, and the nano aerogel felt 4 is laid flat and bonded to the top surface of the composite floor bottom plate 1. The nano aerogel felt 4 is a flexible thermal insulation felt with nano silicon dioxide or metal aerogel as the main material, which is compounded with carbon fiber or ceramic glass fiber through a special process. Its thermal conductivity is extremely low, generally 0.02~0.1w / (m 2 .k), it can more effectively prevent heat transfer than the conventional insulation materials used in the prior art, therefore, the thickness of the floor insulation layer can be greatly reduced. The nano aerogel felt 4 is usually cut into the required size when laid, and multiple pieces of nano aerogel felt 4 are spliced ​​and laid flat. Therefore, each piece of nano aerogel felt 4 needs to be fixed on the composite floor bottom plate 1 with no less than one fixing clip 5 to strengthen its fixing firmness. The joints 6 of the mutually spliced ​​nano aerogel felts 4 need to be filled and reinforced, and the flatness needs to be repaired. Then, a layer of steel mesh 7 or fiber reinforced composite material is laid on the top of the nano aerogel felt 4 as a reinforcement structure layer to enhance the connection strength between the insulation layer and the upper cast-in-place concrete 8, ensure the compactness during the pouring process, and prevent cracking problems. Before pouring concrete, the top distribution reinforcement 11 and the longitudinal reinforcement 10 are respectively arranged on the upper part of the steel mesh 7, and the top distribution reinforcement 11 and the longitudinal reinforcement 10 are respectively tied and fixed to the exposed ends of the steel trusses 3, and then the concrete is poured to form the load-bearing and surface structure of the floor slab. After the cast-in-place concrete 8 is cured, the floor surface layer 9 is laid on the top of the cast-in-place concrete 8, thereby forming an integrated insulation floor slab.

[0011] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An assembled thermal insulation integrated floor slab, comprising a laminated floor slab bottom plate, wherein the laminated floor slab bottom plate is pre-buried with bottom distribution bars and a steel truss, wherein the lower half of the steel truss is buried inside the laminated floor slab bottom plate, and the upper half of the steel truss is exposed, and wherein: The top surface of the composite floor slab is coated with adhesive and bonded with nano aerogel felt, which is fixed to the composite floor slab with fixing clips, and the gaps at the joints of adjacent spliced ​​nano aerogel felts are filled; a steel mesh is laid on the top of the nano aerogel felt, and top distribution bars and longitudinal steel bars are arranged on the exposed part of the steel truss, and the top distribution bars and longitudinal steel bars are fixedly connected to the exposed ends of the steel truss respectively, and concrete is cast on the top of the nano aerogel felt, and the floor surface layer is laid on the top of the cast-in-place concrete.

2. The method for manufacturing an assembled thermal insulation integrated floor slab according to claim 1, characterized in that: The steps include: Step 1: Lay the prefabricated composite floor slab flat, with the exposed end of the steel truss facing upward; Step 2: Lay the nano aerogel felt on the top of the composite floor slab, and fix each nano aerogel felt on the composite floor slab with a fixing clip, and fill and reinforce the gaps at the joints of adjacent nano aerogel felts; Step 3: Lay a steel mesh on top of the nano aerogel felt; Step 4: The top distribution bars and longitudinal reinforcements are arranged on the upper part of the reinforcement mesh, and the top distribution bars and longitudinal reinforcements are fixedly connected to the exposed ends of the reinforcement trusses; Step 5: Cast concrete on top of the steel mesh; Step 6: After the cast-in-place concrete is cured, lay the floor surface layer on top of the cast-in-place concrete.

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