Damp-proof prefabricated slab overhead layer

Abstract

The utility model relates to the technical field of prefabricated slab overhead, in particular to a damp-proof prefabricated slab overhead layer which comprises an overhead structure, the overhead structure comprises a plain soil layer, the plain soil layer is laid at the bottommost part in a pit, a gravel layer is filled above the plain soil layer, a mortar layer is filled above the gravel layer, and the mortar layer is filled above the gravel layer. A C30 structural plate is poured on the mortar layer, a C20 filling layer is poured on the C30 structural plate, and a paving layer is laid on the C20 filling layer. Through the arrangement of the C20 filling layer and the C30 structural plate at the bottom of the paving layer, the integrity of the ground is enhanced, the cracking risk caused by local settlement is reduced, the waterproof effect is achieved, meanwhile, brackets do not need to be additionally arranged at the ground beam during paving, the device directly falls to a natural terrace, and when the local space is adjusted to be a room with water, the construction efficiency is improved. The waterproof problem can be solved without dismantling the prefabricated slab, and meanwhile the cost problem caused by dismantling the prefabricated slab can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated board overheads, in particular to a moisture-proof prefabricated board overhead layer. Background Art

[0002] In southern China, due to the humid climate and frequent high humidity, many buildings experience dampness and odors on the ground floors during certain seasons. From the 1970s to the early 2000s, many old housing units, dormitories, and other buildings installed prefabricated elevated floors above the ground floor living quarters to prevent moisture. The prefabricated elevated floors are constructed by backfilling soil 40-60cm below the ground, then leveling and compacting it. Finally, a layer of prefabricated slabs is laid atop the ground beams to form the first floor floor, creating a small elevated floor specifically for moisture protection.

[0003] With the development of the times, when owners renovate their rooms, part of the living space will be adjusted to a bathroom and turned into a room with water. This will bring about the removal of overhead prefabricated panels, the passage of equipment pipelines, ground repair, and waterproofing problems. If the prefabricated panels are removed and then restored, the on-site construction will be very difficult, the nodes will be complex, and the cost will be high. Based on the shortcomings of the existing technology, the utility model designs a moisture-proof prefabricated panel overhead layer. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the utility model provides a moisture-proof prefabricated board overhead layer, which has the advantages of solving waterproofing and cost problems without dismantling the prefabricated boards.

[0005] The utility model provides the following technical solution: a moisture-proof prefabricated board overhead layer, including an overhead structure, wherein the overhead structure includes a plain soil layer, the plain soil layer is laid at the bottom of a pit, the plain soil layer is filled with a sand and gravel layer, the sand and gravel layer is filled with a mortar layer, a C30 structural board is cast above the mortar layer, a C20 filling layer is cast above the C30 structural board, and a paving layer is laid above the C20 filling layer.

[0006] As a preferred technical solution of the present invention, the paving layer is composed of floor tiles and prefabricated panels, which are adhered to the top of the C20 filling layer through cement slurry.

[0007] As a preferred technical solution of the present invention, the C20 filling layer is 60 mm thick and is equipped with a bidirectional steel mesh inside.

[0008] As a preferred technical solution of the present invention, the C30 structural board is made of a 1:3 cement mixture and has a thickness of 30 mm.

[0009] As a preferred technical solution of the present invention, a wire threading pipeline is buried inside the sand and gravel layer.

[0010] As a preferred technical solution of the present invention, the raw soil layer is backfilled with raw soil and compacted by a rammer.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This moisture-proof prefabricated elevated floor enhances the integrity of the ground and reduces the risk of cracking due to local settlement by setting a C20 filling layer and a C30 structural board at the bottom of the paving layer. While achieving a waterproof effect, it does not require adding corbels at the ground beam during paving. The device is directly lowered to the natural floor. When a local space is converted into a water-filled room, the waterproofing problem can be solved without removing the prefabricated panels, and the cost of removing the prefabricated panels can be avoided.

[0013] 2. This moisture-proof prefabricated board overhead layer can protect the pipelines by burying pipelines in the plain soil layer and filling them with sand and gravel, avoiding the equipment pipelines passing through the prefabricated boards and reinforcing the prefabricated boards. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overhead structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the paving layer structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the split overhead structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the traditional prefabricated panel structure of the present utility model.

[0018] In the figure: 1. Overhead structure; 101. Paving layer; 102. C20 filling layer; 103. C30 structural board; 104. Mortar layer; 105. Sand and gravel layer; 106. Soil layer. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1-4A moisture-proof prefabricated board overhead layer includes an overhead structure 1, which includes a bare soil layer 106. The bare soil layer 106 is laid at the bottom of the pit. The bare soil layer 106 is filled with a sand and gravel layer 105. The sand and gravel layer 105 is filled with a mortar layer 104. A C30 structural board 103 is cast above the mortar layer 104. A C20 filling layer 102 is cast above the C30 structural board 103. A paving layer 101 is laid above the C20 filling layer 102.

[0021] See also Figure 1-3 The paving layer 101, composed of floor tiles and precast panels, is attached to the top of the C20 infill layer 102 using cement slurry. The C20 infill layer 102 is 60mm thick and has a bidirectional steel mesh inside. The C30 structural panel 103 is made of a 1:3 cement mixture and is 30mm thick.

[0022] By providing the C20 filling layer 102 and the C30 structural board 103 at the bottom of the paving layer 101, the integrity of the ground is enhanced, the risk of cracking due to local settlement is reduced, and a waterproof effect is achieved.

[0023] See also Figure 1-3 , a wire threading pipeline is buried inside the sand and gravel layer 105. The soil layer 106 is backfilled with soil and compacted by a rammer.

[0024] By burying pipelines in the plain soil layer 106 and filling with sand and gravel, the pipelines can be protected, avoiding the equipment pipelines passing through the prefabricated panels, and reinforcing the prefabricated panels.

[0025] Working principle: when a moisture-proof prefabricated board overhead layer is used, in the initial state, first backfill the bottom of the pit with a plain soil layer 106 and compact the layers, then lay pipelines above the plain soil layer 106 and fill it with a sand and gravel layer 105, then smooth a 30mm mortar layer 104 on top of the sand and gravel layer 105 in a ratio of 1:3 as a ground membrane, then pour C30 structural board 103 on top of the mortar layer 104, and at the same time pour a 60mm C20 filling layer 102 on top of the C30 structural board 103, and finally adhere the paving layer 101 on the C20 filling layer 102 with cement.

[0026] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A moisture-proof prefabricated panel overhead layer, comprising an overhead structure (1), characterized in that: The overhead structure (1) comprises a plain soil layer (106), the plain soil layer (106) is laid at the bottom of the pit, a sand and gravel layer (105) is filled above the plain soil layer (106), a mortar layer (104) is filled above the sand and gravel layer (105), a C30 structural plate (103) is poured above the mortar layer (104), a C20 filling layer (102) is poured above the C30 structural plate (103), and a paving layer (101) is laid above the C20 filling layer (102).

2. The moisture-proof prefabricated board overhead layer according to claim 1, characterized in that: The paving layer (101) is composed of floor tiles and prefabricated panels, and is adhered to the top of the C20 filling layer (102) through cement slurry.

3. The moisture-proof prefabricated board overhead layer according to claim 1, characterized in that: The C20 filling layer (102) has a thickness of 60 mm and is internally provided with a bidirectional steel mesh.

4. The moisture-proof prefabricated board overhead layer according to claim 1, characterized in that: A wire threading pipeline is buried inside the sandstone layer (105).

5. The moisture-proof prefabricated board overhead layer according to claim 1, characterized in that: The plain soil layer (106) is backfilled with plain soil and compacted by a rammer.

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