Prefabricated terrazzo floor pavement structure

Abstract

The utility model discloses a prefabricated terrazzo floor paving structure which sequentially comprises a first waterproof layer, a protective layer, a first backfill layer, a second backfill layer, a second waterproof layer, a leveling layer and a bonding layer from bottom to top, the first waterproof layer is coated on a base layer, a steel bar grid is embedded in the second backfill layer, and the second waterproof layer is coated on the leveling layer. And a prefabricated terrazzo plate is laid on the bonding layer. The problems that a traditional prefabricated plate terrazzo ground structure is poor in stability and waterproof effect, and a laid terrazzo plate is prone to being affected with damp, flooding, cracking, hollowing and the like are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of building decoration, in particular to a prefabricated terrazzo floor paving structure. Background Art

[0002] With the development of society, the categories of decorative materials are becoming more and more abundant, and people's requirements for interior decoration are also constantly improving, especially in terms of floor decoration. The currently widely used natural marble and floor tiles can no longer meet people's personalized needs. Terrazzo floor structure is deeply loved by people because of its strong wear resistance and durability, and can be made into rich colors and patterns at will, forming a unique and dazzling floor. Terrazzo floor is divided into on-site cast terrazzo floor and prefabricated terrazzo floor structure according to the construction and production process. Among them, on-site cast terrazzo has high construction precision requirements, and the flatness is difficult to control, which affects the overall aesthetics. Therefore, prefabricated terrazzo floor structure is adopted by many people; however, the traditional prefabricated terrazzo floor structure has poor stability and poor waterproof effect. The laid terrazzo slabs are also prone to moisture, discoloration, cracking, hollowing and other phenomena. Utility Model Content

[0003] In view of the defects of the above-mentioned prior art, the utility model provides a prefabricated terrazzo floor paving structure to solve the problems of poor stability and poor waterproof effect of the traditional prefabricated terrazzo floor structure, and the laid terrazzo slabs are prone to moisture, discoloration, cracking, hollowing and other problems.

[0004] The utility model is implemented by the following technical solutions:

[0005] A prefabricated terrazzo floor paving structure comprises, from bottom to top, a first waterproof layer, a protective layer, a first backfill layer, a second backfill layer, a second waterproof layer, a leveling layer and an adhesive layer, wherein the first waterproof layer is coated on a building base layer, a steel grid is buried in the second backfill layer, and a prefabricated terrazzo slab is laid on the adhesive layer.

[0006] Furthermore, the adhesive layer is laid using an inorganic adhesive, and the surface of the adhesive layer is formed in a serrated shape.

[0007] Furthermore, the first waterproof layer and the second waterproof layer are both paved with polyurethane polymer waterproof coating, the thickness of the first waterproof layer is 1.5 mm, and the thickness of the second waterproof layer is 2 mm.

[0008] Furthermore, the protective layer is paved with cement mortar, and the thickness of the protective layer is 20 mm.

[0009] Furthermore, the first backfill layer is paved with C15 expanded clay concrete, and the thickness of the first backfill layer is 430 mm.

[0010] Furthermore, the second backfill layer is paved with C20 fine stone concrete, and the thickness of the second backfill layer is 100 mm.

[0011] Furthermore, the size of the steel bar grid is 200x200mm, and the diameter of the steel bars of the steel bar grid is 6mm.

[0012] Furthermore, the leveling layer is paved with cement mortar.

[0013] Furthermore, the gaps of the prefabricated terrazzo slabs are filled with caulking agent.

[0014] Furthermore, the thickness of the adhesive layer is 6-10 mm, and the thickness of the prefabricated terrazzo board is 20 mm.

[0015] Compared with the prior art, the beneficial effects of the present invention include at least:

[0016] By first applying a first waterproof layer on the surface of the base layer, and then applying a second waterproof layer on the second backfill layer, the waterproof effects of the two waterproof layers are superimposed to strengthen the waterproof effect of the base layer, effectively improving the waterproof performance of the ground; the protective layer can effectively protect the base layer; the setting of the first backfill layer and the second backfill layer makes the overall paving structure have better load-bearing and compressive resistance. At the same time, a steel grid is buried in the second backfill layer, and the steel grid plays an anti-tensile role, which ensures the strength of the leveling layer while preventing subsequent cracking and affecting the subsequent paving of terrazzo slabs; by coating the adhesive layer on the leveling layer, using prefabricated terrazzo slabs to lay on the adhesive layer, compared with the traditional direct use of 20-30mm thick cement mortar for terrazzo slabs, the traditional prefabricated terrazzo slabs have poor stability and poor waterproof effect. The laid terrazzo slabs are prone to moisture, discoloration, cracking, hollowing and other problems. The above structural setting constitutes a prefabricated terrazzo floor paving structure with high anti-leakage, good crack resistance, strong stability and good protection of the internal structure of the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a cross-sectional view of a prefabricated terrazzo floor paving structure according to an embodiment of the utility model;

[0018] In the figure: 1. Base layer; 2. First waterproof layer; 3. Protective layer; 4. First backfill layer; 5. Second backfill layer; 51. Steel grid; 6. Second waterproof layer; 7. Leveling layer; 8. Adhesive layer; 9. Prefabricated terrazzo slab; 10. Caulking agent. DETAILED DESCRIPTION

[0019] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete and to fully convey the concepts of example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted.

[0020] The words expressing positions and directions described in the present utility model are all explained by taking the drawings as examples, but they can be changed as needed, and all the changes are included in the protection scope of the present utility model.

[0021] like Figure 1 As shown, the utility model provides a prefabricated terrazzo floor paving structure, which includes, from bottom to top, a first waterproof layer 2, a protective layer 3, a first backfill layer 4, a second backfill layer 5, a second waterproof layer 6, a leveling layer 7 and an adhesive layer 8, wherein the first waterproof layer 2 is coated on a base layer 1, a steel grid 51 is embedded in the second backfill layer 5, and a prefabricated terrazzo slab 9 is laid on the adhesive layer 8.

[0022] In this embodiment, a first waterproof layer 2 is first applied on the surface of the base layer 1, and then a second waterproof layer 6 is applied on the second backfill layer 5. The waterproof effects of the two waterproof layers are superimposed to strengthen the waterproof effect of the base layer 1, which can play a good role in preventing water leakage and effectively improve the waterproof performance of the ground. The protective layer 3 can effectively protect the building ground. The arrangement of the first backfill layer 4 and the second backfill layer 5 makes the overall paving structure have better load-bearing and compressive resistance. At the same time, a steel grid 51 is buried in the second backfill layer 5. The steel grid 51 plays an anti-tensile role, which ensures the strength of the leveling layer 7 while preventing subsequent cracking and affecting the subsequent paving of terrazzo slabs. By coating an adhesive layer 8 on the leveling layer 7 and using a prefabricated terrazzo slab 9 to be laid on the adhesive layer 8, compared with the traditional method of directly using 20-30 mm thick cement mortar for paving terrazzo slabs, the poor stability and poor waterproof effect of the ground structure of the traditional prefabricated plate terrazzo slabs are solved, and the laid terrazzo slabs are prone to moisture, discoloration, cracking, hollowing and other problems. The above structural setting forms a prefabricated terrazzo floor paving structure with high waterproofness, good crack resistance, strong stability and good protection of the internal structure of the ground.

[0023] It should be noted that the prefabricated terrazzo floor paving structure of this embodiment can be suitable for outdoor or indoor paving.

[0024] As a preferred embodiment, the adhesive layer 8 is laid with an inorganic adhesive, and the surface of the adhesive layer 8 is formed with a serrated shape.

[0025] In this embodiment, considering that the second waterproof layer 6 is not properly bonded with the cement mortar after film formation, it is easy to cause quality problems such as hollowing and cracking, so an inorganic adhesive is coated on the second waterproof layer 6 and scraped into a serrated shape with a scraper to increase the contact surface, thereby preventing subsequent cracking and hollowing.

[0026] As a preferred embodiment, the first waterproof layer 2 and the second waterproof layer 6 are both paved with polyurethane polymer waterproof coating, the thickness of the first waterproof layer 2 is 1.5 mm, and the thickness of the second waterproof layer 6 is 2 mm. The polyurethane polymer waterproof coating is used for coating, which has high waterproof performance. Of course, the first waterproof layer 2 and the second waterproof layer 6 can also use other waterproof coatings, which are not specifically limited here; the thickness of the first waterproof layer 2 and the thickness of the second waterproof layer 6 can also be designed according to actual needs, which are not specifically limited here.

[0027] As a preferred embodiment, the protective layer 3 is paved with cement mortar, and the thickness of the protective layer 3 is 20 mm. In this embodiment, the construction mix ratio of concrete and cement mortar is determined according to the water content of the sand, stone or other aggregates actually used.

[0028] As a preferred embodiment, the first backfill layer 4 is paved with C20 ceramsite concrete, and the thickness of the first backfill layer 4 is 430 mm. In this embodiment, the on-site backfill height is determined according to the design drawing requirements and the actual on-site conditions, and ceramsite and lightweight concrete are fully mixed. After the mixing is completed, the concrete is backfilled to the on-site range and a second mixing is performed.

[0029] As a preferred embodiment, the second backfill layer 5 is paved with C15 fine stone concrete, and the thickness of the second backfill layer 5 is 100 mm. After the fine stone concrete of this embodiment is formed and solidified, the surface is sprinkled with plain cement mortar for plastering and polishing.

[0030] As a preferred embodiment, the size of the steel grid 51 is 200x200mm, and the diameter of the steel bars of the steel grid 51 is 6mm. Of course, the size of the steel grid 51 can also be other sizes, such as 300x300mm, which is not specifically limited here.

[0031] As a preferred embodiment, the leveling layer 7 is laid using cement mortar, wherein the weight ratio of cement to mortar in the cement mortar is 1:3.

[0032] As a preferred embodiment, the gaps of the prefabricated terrazzo slab 9 are filled with a caulking agent 10 .

[0033] As a preferred embodiment, the thickness of the adhesive layer 8 is 6-10 mm, and the thickness of the prefabricated terrazzo board 9 is 20 mm.

[0034] In this embodiment, after laying the adhesive layer 8, the prefabricated terrazzo slab 9 is placed at the laying position, the longitudinal and transverse joints are aligned, and the terrazzo slab is gently tapped with a rubber hammer (or a wooden hammer) to vibrate the mortar. When the mortar is hammered to the laying elevation, the terrazzo slab is lifted and moved aside, and the adhesive layer 8 is carefully checked to see if it is flat and dense. If there are any gaps, they should be filled with mortar in time, and finally a layer of cement slurry with a water-cement ratio of 0.4 to 0.5 is poured before formal paving. When paving, the elevation control line must be drawn in each row according to the elevation of the ground surface layer. According to the brick joint conditions on site, hand grinders are used to process brick joints of different sizes, and the brick joints are controlled at about 2mm. Subsequently, vacuum cleaners are used to clean the brick joints to ensure that the inside of the brick joints is cleaned in place. Subsequently, scrapers are used to take special caulking agent 10 to fill the brick joints to ensure that the brick joints are embedded and full. After the caulking is completed, appropriate grinding sheets are selected, installed on the grinding wheel machine, and the terrazzo is initially ground. The burrs and impurities on the surface are cleaned with a brush, and then the terrazzo is ground again to make its surface smoother (during the grinding process, it is necessary to pay attention to the control of the grinding force, and excessive grinding or insufficient force should be avoided to avoid damage to the terrazzo), and appropriate polishing sheets are selected, installed on the electric fan, and the terrazzo surface is polished.

[0035] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, substitute and modify the above embodiments within the scope of the invention without departing from the principles and purpose of the present invention. All such changes should fall within the scope of protection of the claims of the present invention.

Claims

1. A prefabricated terrazzo floor paving structure, characterized in that: The invention comprises, from bottom to top, a first waterproof layer (2), a protective layer (3), a first backfill layer (4), a second backfill layer (5), a second waterproof layer (6), a leveling layer (7) and an adhesive layer (8); the first waterproof layer (2) is coated on a building base layer (1); a steel bar grid (51) is embedded in the second backfill layer (5); and a prefabricated terrazzo slab (9) is laid on the adhesive layer (8).

2. The prefabricated terrazzo floor paving structure according to claim 1, characterized in that: The adhesive layer (8) is laid using an inorganic adhesive, and the surface of the adhesive layer (8) is formed in a serrated shape.

3. The prefabricated terrazzo floor paving structure according to claim 1, characterized in that: The first waterproof layer (2) and the second waterproof layer (6) are both paved with polyurethane polymer waterproof coating, the thickness of the first waterproof layer (2) is 1.5 mm, and the thickness of the second waterproof layer (6) is 2 mm.

4. The prefabricated terrazzo floor paving structure according to claim 1, characterized in that: The protective layer (3) is paved with cement mortar, and the thickness of the protective layer (3) is 20 mm.

5. The prefabricated terrazzo floor paving structure according to claim 1, characterized in that: The first backfill layer (4) is paved with C15 ceramsite concrete, and the thickness of the first backfill layer (4) is 430 mm.

6. The prefabricated terrazzo floor paving structure according to claim 1, characterized in that: The second backfill layer (5) is paved with C20 fine stone concrete, and the thickness of the second backfill layer (5) is 100 mm.

7. The prefabricated terrazzo floor paving structure according to claim 1, characterized in that: The size of the steel bar grid (51) is 200x200mm, and the diameter of the steel bars in the steel bar grid (51) is 6mm.

8. The prefabricated terrazzo floor paving structure according to claim 1, characterized in that: The leveling layer (7) is paved with cement mortar.

9. The prefabricated terrazzo floor paving structure according to claim 1, characterized in that: The gaps of the prefabricated terrazzo plate (9) are filled with a caulking agent (10).

10. The prefabricated terrazzo floor paving structure according to claim 1, characterized in that: The thickness of the adhesive layer (8) is 6-10 mm, and the thickness of the prefabricated terrazzo board (9) is 20 mm.

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