A precast concrete waterproof roof structure

Abstract

The utility model discloses a kind of waterproof roof structures of precast concrete, belong to precast concrete field, including precast concrete main body, the precast concrete main body includes concrete inner layer, concrete outer layer, first waterproof layer, cement-based adhesive, several groups second waterproof layer and thermal insulation layer, drainage groove is provided between the concrete inner layer and concrete outer layer, the drainage groove is inclined 2-3 degrees to one end of precast concrete main body, by the cooperation of use between above each device, by multiple waterproof design, excellent waterproof effect is realized, first waterproof layer adopts polyvinyl chloride waterproofing membrane, its upper and lower two sides are adhered with concrete outer layer and inner layer respectively by means of cement-based adhesive, effectively block liquid penetration, simultaneously, concrete inner layer adopts polymer waterproof concrete, itself has good waterproof property, substantially reduce the possibility of roof water leakage, solve the problem that traditional roof single waterproof layer is easy to crack, blister, fall off and lead to water leakage.

Description

Technical Field

[0001] This utility model relates to the field of precast concrete technology, specifically a precast concrete waterproof roof structure. Background Technology

[0002] In the field of building engineering, the roof structure, as a crucial component of a building, directly impacts its service life and occupant comfort through its waterproofing, drainage, and insulation performance. Traditional roof structures often face numerous problems during long-term use. Regarding waterproofing, existing precast concrete roofs typically have an outermost waterproof layer. Because this layer is directly exposed to the elements, it is prone to cracking, bulging, and peeling over time, leading to rainwater seepage and roof leaks. Furthermore, some roof waterproofing materials have poor weather resistance and are easily aged and degraded by ultraviolet radiation, temperature changes, and other natural factors, further reducing waterproofing performance.

[0003] Therefore, this utility model provides a precast concrete waterproof roof structure to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] This utility model provides a precast concrete waterproof roof structure, which aims to solve the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a precast concrete waterproof roof structure, comprising a precast concrete body, wherein the precast concrete body includes an inner concrete layer, an outer concrete layer, a first waterproof layer, a cement-based adhesive, several sets of second waterproof layers and a thermal insulation layer, wherein a drainage channel is provided between the inner concrete layer and the outer concrete layer, and the drainage channel is inclined at 2-3 degrees toward one end of the precast concrete body.

[0008] As a preferred technical solution of this application, the upper and lower surfaces of the first waterproof layer are bonded to the outer and inner concrete layers respectively with cement-based adhesive, the second waterproof layer covers the outside of the outer concrete layer, and the thermal insulation layer covers the outer periphery of the second waterproof layer.

[0009] As a preferred technical solution of this application, a gap is maintained between two adjacent sets of the second waterproof layer, and the gap is located directly above the drainage channel.

[0010] As a preferred technical solution of this application, the outer layer of concrete is composed of high-molecular permeable concrete.

[0011] As a preferred technical solution of this application, the inner concrete layer is composed of polymer waterproof concrete.

[0012] As a preferred technical solution of this application, the second waterproof layer is composed of polyurethane waterproof coating.

[0013] As a preferred technical solution of this application, the insulation layer is composed of an aerogel insulation coating.

[0014] As a preferred technical solution of this application, the first waterproof layer is composed of polyvinyl chloride waterproof membrane.

[0015] (III) Beneficial Effects

[0016] In terms of waterproofing performance, this structure achieves excellent waterproofing through multiple waterproofing designs. The first waterproofing layer uses polyvinyl chloride waterproof membrane, which is bonded to the outer and inner layers of concrete respectively with cement-based adhesives on both sides, ensuring a tight fit and effectively preventing liquid penetration. The second waterproofing layer is composed of polyurethane waterproof coating and is wrapped around the outer layer of concrete, forming another waterproof barrier. At the same time, the inner layer of concrete uses polymer waterproof concrete, which itself has good waterproofing properties. The multiple waterproofing measures work together to significantly reduce the possibility of roof leaks and solve the problem of traditional single waterproofing layers of roofs being prone to cracking, bulging, and peeling, leading to leaks. Attached Figure Description

[0017] Fig. 1 This is a structural schematic diagram of a precast concrete waterproof roof structure.

[0018] Fig. 2 This is a schematic diagram of the internal components of a precast concrete waterproof roof structure.

[0019] Fig. 3 This is a schematic cross-sectional view of the side of a precast concrete waterproof roof structure.

[0020] In the picture:

[0021] 1. Precast concrete main body; 11. Inner concrete layer; 12. Outer concrete layer; 13. First waterproof layer; 14. Cement-based adhesive; 15. Second waterproof layer; 16. Thermal insulation layer; 2. Drainage channel. Detailed Implementation

[0022] 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.

[0023] This utility model provides a precast concrete waterproof roof structure, such as Figs. 1-3 As shown, the precast concrete waterproof roof structure includes a precast concrete body 1, which also includes an inner concrete layer 11, an outer concrete layer 12, a first waterproof layer 13, a cement-based adhesive 14, several sets of second waterproof layers 15, and a thermal insulation layer 16.

[0024] Specifically, the inner concrete layer 11 is made of polymer waterproof concrete. This material itself has excellent waterproof performance, providing basic waterproof protection for the roof structure. The polymer components added to the polymer waterproof concrete, such as polypropylene fibers and latex, not only fill the tiny pores inside the concrete but also form a tough network structure within the concrete, greatly improving the concrete's crack resistance and impermeability. Even during long-term use, affected by factors such as temperature changes and foundation settlement, cracks are not easily formed, thus maintaining a good waterproof effect. Moreover, this concrete has excellent durability, resisting the erosion of various chemical media and extending the service life of the roof structure.

[0025] The outer concrete layer 12 is made of high-polymer permeable concrete, which allows rainwater and other liquids to pass through it, facilitating subsequent drainage and waterproofing. The high-polymer permeable concrete contains a large number of interconnected pores. The size and distribution of these pores are carefully designed to ensure good permeability, allowing rainwater to quickly infiltrate, while maintaining a certain structural strength to withstand the roof load. At the same time, this type of concrete has good air permeability, allowing moisture inside the roof structure to be discharged in time, preventing moisture accumulation that could damage the waterproofing layer.

[0026] A drainage channel 2 is provided between the inner concrete layer 11 and the outer concrete layer 12. The drainage channel 2 is inclined towards one end of the precast concrete main body 1, and the inclination angle is controlled at 2-3 degrees. This inclination angle design can utilize gravity to promote the smooth flow of liquid entering the drainage channel 2 towards one end of the precast concrete main body 1, thereby achieving efficient drainage and preventing liquid from accumulating inside the roof structure.

[0027] The first waterproof layer 13 is made of polyvinyl chloride waterproof membrane, and its upper and lower surfaces are bonded to the outer concrete layer 12 and the inner concrete layer 11 respectively by cement-based adhesive 14.

[0028] Cement-based adhesive 14 exhibits excellent bonding strength, ensuring a tight bond between the PVC waterproof membrane and the concrete layer, preventing issues such as hollow areas and detachment. Furthermore, this adhesive demonstrates good water resistance and weather resistance; its bonding performance does not significantly decrease under prolonged humid environments and climate changes. Moreover, cement-based adhesive 14 is an environmentally friendly material, free of harmful substances, and will not impact the environment or human health.

[0029] Specifically, through the bonding effect of the cement-based adhesive 14, the first waterproof layer 13 can be tightly fixed between the inner concrete layer 11 and the outer concrete layer 12, further enhancing the waterproof effect inside the precast concrete body 1 and effectively preventing liquid from penetrating between the inner concrete layer 11 and the outer concrete layer 12. This multi-layer waterproof design forms a waterproof barrier, greatly improving the waterproof reliability of the roof structure.

[0030] Several sets of second waterproof layers 15 are composed of polyurethane waterproof coating. They cover the outside of the concrete outer layer 12, providing all-around waterproof protection and further preventing liquid from penetrating inward. During construction, the polyurethane waterproof coating is applied in multiple layers, each with strict thickness requirements to ensure a uniform and dense waterproof membrane.

[0031] The outer periphery of the second waterproof layer 15 is covered with an insulation layer 16. The insulation layer 16 adopts an aerogel insulation coating. The aerogel insulation coating has excellent thermal insulation performance, which can effectively reduce the heat exchange between the inside and outside of the roof structure and improve the energy-saving effect of the roof.

[0032] Specifically, the aerogel insulation coating is applied using professional spraying equipment, ensuring uniform coating thickness and comprehensive coverage. This coating has an extremely low thermal conductivity, effectively preventing heat transfer and reducing indoor heat loss in winter, thus lowering the energy consumption of heating equipment. In addition, the aerogel insulation coating also has good sound insulation properties, reducing outdoor noise from entering the room and improving the living comfort inside the building.

[0033] Specifically, to optimize drainage and waterproofing performance, gaps are maintained between adjacent sets of second waterproofing layers 15, and these gaps are located directly above the drainage channel 2. This allows liquid that has permeated the outer concrete layer 12 to flow through the gaps between adjacent second waterproofing layers 15 into the drainage channel 2 below. Then, with the help of the 22-3 degree inclination of the drainage channel 2, the liquid is quickly discharged from the roof structure. The width of these gaps is precisely calculated to ensure that the liquid can flow smoothly into the drainage channel without affecting the overall waterproofing performance of the second waterproofing layer 15. At the same time, the edges of the gaps are rounded to prevent damage to the waterproofing layer due to sharp corners.

[0034] The first waterproof layer 13 is made of polyvinyl chloride (PVC) waterproof membrane, which has good ductility and weather resistance, can adapt to slight deformations that may occur in the roof structure, and ensure the durability of waterproof performance. PVC waterproof membrane also has high tensile strength and tear strength, can withstand various stresses generated by the roof structure during use, and is not easily damaged. Moreover, the surface of the membrane is smooth and does not easily get dusty or dirty, making it easy to clean and maintain.

[0035] The second waterproof layer 15 uses polyurethane waterproof coating. After curing, this material forms a waterproof membrane with high strength and elasticity, providing significant waterproofing. It also exhibits good adhesion to the outer concrete layer 12, firmly covering its exterior. The polyurethane waterproof membrane also possesses excellent high and low temperature resistance; it does not become brittle or soften under extreme temperature conditions, maintaining its good physical and waterproof properties. Furthermore, the membrane has a certain degree of puncture resistance, resisting punctures from sharp objects that may encounter the roof, preventing damage to the waterproof layer.

[0036] Through the rational arrangement and coordination of the aforementioned components, this precast concrete waterproof roof structure achieves excellent waterproofing, drainage, and thermal insulation functions, making it suitable for roofing projects of various types of buildings. Whether it's a large commercial building, industrial plant, or small residential house, it can be flexibly designed and applied according to actual needs. The precast production method of this structure can also greatly improve construction efficiency, shorten the construction period, reduce construction costs, and at the same time ensure the quality and stability of the roof structure.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A precast concrete waterproof roof structure, comprising a precast concrete main body (1), characterized in that: The precast concrete body (1) includes an inner concrete layer (11), an outer concrete layer (12), a first waterproof layer (13), a cement-based adhesive (14), several sets of second waterproof layers (15) and a thermal insulation layer (16). A drainage channel (2) is provided between the inner concrete layer (11) and the outer concrete layer (12), and the drainage channel (2) is inclined at 2-3 degrees toward one end of the precast concrete body (1).

2. The precast concrete waterproof roof structure according to claim 1, characterized in that: The first waterproof layer (13) is bonded to the outer concrete layer (12) and the inner concrete layer (11) respectively with cement-based adhesive (14) on both the upper and lower surfaces. The second waterproof layer (15) covers the outside of the outer concrete layer (12), and the thermal insulation layer (16) covers the outer periphery of the second waterproof layer (15).

3. The precast concrete waterproof roof structure according to claim 1, characterized in that: A gap is left between two adjacent sets of the second waterproof layer (15), and the gap is located directly above the drainage channel (2).

4. The precast concrete waterproof roof structure according to claim 1, characterized in that: The outer concrete layer (12) is composed of high-molecular permeable concrete.

5. A precast concrete waterproof roof structure according to claim 1, characterized in that: The inner concrete layer (11) is composed of polymer waterproof concrete.

6. A precast concrete waterproof roof structure according to claim 1, characterized in that: The second waterproof layer (15) is composed of polyurethane waterproof coating.

7. A precast concrete waterproof roof structure according to claim 1, characterized in that: The insulation layer (16) is composed of an aerogel insulation coating.

8. A precast concrete waterproof roof structure according to claim 3, characterized in that: The first waterproof layer (13) is made of polyvinyl chloride waterproof membrane.

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