Fireproof and explosion-proof self-healing laminated floor support plate

Abstract

The utility model relates to the technical field of fabricated building, concretely is a kind of fireproof blast-proof self-healing laminated floor support plate, including the prefabricated concrete slab of rectangle, multiple longitudinal reinforcements are penetrated and arranged between the position of two side walls of prefabricated concrete slab, and multiple transverse reinforcements are penetrated and arranged between the position of other two side walls of prefabricated concrete slab, the top of prefabricated concrete slab is fixed with multiple truss reinforcements, microcapsule repair agent is incorporated into prefabricated concrete slab, and the bottom of prefabricated concrete slab is provided with fireproof blast-proof layer. Through the cooperation of longitudinal reinforcement and transverse reinforcement of J type bidirectional interlocking reinforced crack resistance, microcapsule self-repairing crack, combined with basalt fiber layer and ceramic precursor coating form high-temperature barrier when fire, realize construction reliability and disaster multiple protection, solve the problem of traditional plate crack sensitivity and weak disaster resistance.

Description

Technical Field

[0001] This utility model mainly relates to the field of prefabricated building technology, specifically a fireproof, explosion-proof, self-healing composite floor deck. Background Technology

[0002] Composite floor decking is an assembled monolithic floor slab composed of precast concrete slabs and cast-in-place reinforced concrete layers. Due to its good integrity and smooth upper and lower surfaces, it facilitates finishing and is suitable for high-rise buildings and large-span buildings requiring high overall rigidity. It is currently widely used in prefabricated school buildings. However, because of its thin slab thickness, cracks are prone to occur during hoisting. Furthermore, due to its layered casting process, its overall integrity in terms of fire resistance and crack resistance is inferior to cast-in-place floor slabs. Therefore, a fire-resistant, explosion-proof, self-healing composite floor decking is needed, capable of self-repairing even minor cracks and possessing strong fire and explosion resistance properties. Utility Model Content

[0003] The purpose of this invention is to provide a fireproof, explosion-proof, self-healing composite floor decking to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a fireproof, explosion-proof, self-healing composite floor deck, comprising a rectangular precast concrete slab, wherein multiple longitudinal reinforcing bars are inserted between the two side walls of the precast concrete slab, and multiple transverse reinforcing bars are inserted between the other two side walls of the precast concrete slab, multiple truss reinforcing bars are fixed to the top of the precast concrete slab, a microcapsule repair agent is incorporated into the precast concrete slab, and a fireproof and explosion-proof layer is provided at the bottom of the precast concrete slab.

[0005] Preferably, any one of the transverse reinforcing bars has a side-turned J-shaped structure, and the hooks of adjacent transverse reinforcing bars face opposite directions and are spaced at the same distance from each other.

[0006] Furthermore, the longitudinal reinforcement bars and the transverse reinforcement bars have the same structure and the same distribution pattern.

[0007] Preferably, the longitudinal reinforcement, transverse reinforcement and truss reinforcement are embedded in the precast concrete slab and integrally formed with the precast concrete slab.

[0008] Preferably, the microcapsule repair agent comprises a chitosan shell and an epoxy resin core, and the particle size of the microcapsule repair agent is 200-500 μm.

[0009] Preferably, the fireproof and explosion-proof layer is a basalt fiber mesh, and the bottom of the fireproof and explosion-proof layer is also coated with a ceramic precursor coating.

[0010] Preferably, the top two sides of the precast concrete slab are provided with tongue and groove joints.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This utility model provides a fireproof, explosion-proof, and self-healing composite floor deck. The precast concrete slab has J-shaped transverse and longitudinal steel bars that are interlocked in the slab to form a two-way mechanical interlock between the slabs. Combined with the pre-embedded top truss steel bars, it is integrally formed, which greatly enhances the crack resistance during hoisting and the bonding strength of the cast-in-place layer, reducing the generation of cracks from the source.

[0013] This utility model provides a fireproof, explosion-proof, and self-healing composite floor deck. By incorporating chitosan into the concrete matrix to encapsulate epoxy resin microcapsules, when minute cracks appear in the deck, the capsules rupture to release a repair agent that fills the gaps, thus achieving self-healing of structural damage.

[0014] This utility model provides a fireproof and explosion-proof self-healing composite floor deck. The basalt fiber mesh cloth is set on the bottom of the deck as a basic fire barrier. The ceramic precursor coating on its surface is transformed into a dense ceramic layer when exposed to high temperature, which synergistically inhibits flame penetration and the propagation of detonation shock waves.

[0015] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0016] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of the present invention and other related contents, and should not be considered as limitations on the present invention.

[0017] In the accompanying drawings of the instruction manual:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a sectional view of the AA position of this utility model;

[0020] Figure label:

[0021] 1. Longitudinal reinforcement; 2. Transverse reinforcement; 3. Truss reinforcement; 4. Precast concrete slab; 5. Tongue and groove joint; 6. Fireproof and explosion-proof layer. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] like Figures 1 to 2 As shown, a fireproof, explosion-proof, self-healing composite floor deck includes a rectangular precast concrete slab 4. Multiple longitudinal reinforcing bars 1 are inserted between the two side walls of the precast concrete slab 4, and multiple transverse reinforcing bars 2 are inserted between the other two side walls of the precast concrete slab 4. Multiple truss reinforcing bars 3 are fixed to the top of the precast concrete slab 4. Microcapsule repair agent is incorporated into the precast concrete slab 4, and a fireproof and explosion-proof layer 6 is provided at the bottom of the precast concrete slab 4.

[0025] Any one of the transverse reinforcing bars 2 has a side-turned J-shaped structure, and the hooks of adjacent transverse reinforcing bars 2 face opposite directions and are spaced 6 apart, so that the J-shaped hooks are staggered to form a two-way mechanical interlocking.

[0026] The longitudinal steel bars 1 and the transverse steel bars 2 have the same structure and the same distribution, so that the longitudinal steel bars 1 and the transverse steel bars 2 cooperate with each other to mechanically interlock around the perimeter, resulting in strong structural stability.

[0027] The longitudinal steel bars 1, transverse steel bars 2 and truss steel bars 3 are embedded in the precast concrete slab 4 and are integrally formed with the precast concrete slab 4. They are prefabricated in advance to facilitate rapid on-site assembly.

[0028] The microcapsule repair agent comprises a chitosan shell and an epoxy resin core. The particle size of the microcapsule repair agent is 200-500μm. When a microcrack appears in the plate, the capsule ruptures and releases the repair agent to fill the gap, thereby achieving self-healing of structural damage.

[0029] The fireproof and explosion-proof layer 6 is a basalt fiber mesh cloth. The bottom of the fireproof and explosion-proof layer 6 is also coated with a ceramic precursor coating. The basalt fiber mesh cloth serves as a basic fireproof barrier. When the ceramic precursor coating on its surface is exposed to high temperature, it transforms into a dense ceramic layer, which synergistically inhibits flame penetration and the propagation of detonation shock waves.

[0030] The top two sides of the precast concrete slab 4 are provided with tongue and groove joints 5. When the top of the precast concrete slab 4 is cast in place, the tongue and groove joints 5 are interlocked with it to form a mechanical interlock to enhance the shear resistance between the slab joints and prevent the slab joints from shifting during the casting of the cast-in-place layer.

[0031] The implementation principle of this application embodiment is as follows: When using this product, a precast concrete slab 4 is first installed. The J-shaped transverse steel bars 2 and longitudinal steel bars 1 distributed interlaced within the precast concrete slab 4 form a mechanical interlocking around the slab body. Combined with the precast and embedded integral truss steel bars 3 at the top, the stability of the cast-in-place layer formed by pouring concrete at the top is enhanced. If cracks occur in the slab body during the installation of the precast concrete slab 4, the microcapsule repair agent mixed inside it breaks and releases epoxy resin to fill the gaps, realizing the self-healing of structural damage. When exposed to high temperatures, the ceramic precursor coating at the bottom is transformed into a dense ceramic layer, which, together with the basalt fiber mesh cloth, inhibits flame penetration and the propagation of detonation shock waves, improving fireproof and explosion-proof performance.

[0032] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from its essential characteristics. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A fireproof and explosion-proof self-healing laminated floor support plate comprising a rectangular prefabricated concrete plate (4), characterized in that: Multiple longitudinal steel bars (1) are inserted between the two side walls of the precast concrete slab (4), and multiple transverse steel bars (2) are inserted between the other two side walls of the precast concrete slab (4). Multiple truss steel bars (3) are fixed to the top of the precast concrete slab (4). Microcapsule repair agent is added to the precast concrete slab (4), and a fireproof and explosion-proof layer (6) is provided at the bottom of the precast concrete slab (4).

2. The fireproof, explosion-proof, self-healing composite floor decking according to claim 1, characterized in that: Any one of the transverse steel bars (2) has a side-turned J-shaped structure, and the hooks of adjacent transverse steel bars (2) face opposite directions and are spaced at the same distance from each other.

3. The fireproof, explosion-proof, self-healing composite floor decking according to claim 2, characterized in that: The longitudinal reinforcement (1) and the transverse reinforcement (2) have the same structure and the same distribution.

4. The fireproof, explosion-proof, self-healing composite floor decking according to claim 1, characterized in that: The longitudinal steel bars (1), transverse steel bars (2) and truss steel bars (3) are embedded in the precast concrete slab (4) and are integrally formed with the precast concrete slab (4).

5. The fireproof, explosion-proof, self-healing composite floor decking according to claim 1, characterized in that: The microcapsule repair agent comprises a chitosan shell and an epoxy resin core, and the particle size of the microcapsule repair agent is 200-500 μm.

6. The fireproof, explosion-proof, self-healing composite floor decking according to claim 1, characterized in that: The fireproof and explosion-proof layer (6) is a basalt fiber mesh cloth, and the bottom of the fireproof and explosion-proof layer (6) is also coated with a ceramic precursor coating.

7. The fireproof, explosion-proof, self-healing composite floor decking according to claim 1, characterized in that: The precast concrete slab (4) has tongue and groove joints (5) reserved on both sides of its top.

Images