Paving slab

Abstract

A paving plate comprises a main body layer which comprises an ultra-high performance concrete layer; the covering layer is located on the main body layer, and an anti-skid structure is arranged on the surface of the covering layer. The paving plate provided by the embodiment of the utility model has excellent compression resistance and skid resistance, the service life of the paving plate can be prolonged, and the use safety of the paving plate can be improved.

Description

Technical Field

[0001] This utility model relates to the field of road paving technology, and in particular to a paving slab. Background Technology

[0002] Temporary paving slabs are a commonly used construction tool during road construction operations. They are typically placed on excavated or damaged road surfaces to allow pedestrians or vehicles to pass temporarily, thus avoiding inconvenience to the public during road construction.

[0003] Traditionally, steel plates are used for paving slabs. However, the surface of steel plates is relatively smooth, especially in rainy or wet weather. This further reduces the British Pendulum Number (BPN), making it easy for non-motorized vehicles or pedestrians to slip and fall, and even causing motor vehicle tires to skid, leading to traffic accidents. Currently, polyethylene is also used to make paving slabs as an alternative to steel plates, but polyethylene has poor pressure resistance, limiting its application.

[0004] Therefore, there is an urgent need to provide a paving slab with excellent anti-slip and pressure-resistant properties. Utility Model Content

[0005] The technical problem solved by this utility model is to provide a paving slab with excellent anti-slip properties and high compressive strength.

[0006] To solve the above-mentioned technical problems, this utility model provides a paving slab, including: a main layer, the main layer including an ultra-high performance concrete layer; and a cover layer, the cover layer being located on the main layer, and the surface of the cover layer being provided with an anti-slip structure.

[0007] Optionally, the main body layer further includes a steel mesh, which is disposed in the ultra-high performance concrete layer, and the ultra-high performance concrete layer wraps around and fills the steel mesh.

[0008] Optionally, the steel mesh includes transverse steel bars and longitudinal steel bars, with the spacing between adjacent transverse steel bars being between 100mm and 200mm, and the spacing between adjacent longitudinal steel bars being between 100mm and 200mm.

[0009] Optionally, the reinforcement ratio of the steel mesh is greater than or equal to 0.2%.

[0010] Optionally, the covering layer includes a central region and a peripheral region surrounding the central region, wherein the thickness of the covering layer in the central region is greater than the thickness of the covering layer in the peripheral region.

[0011] Optionally, the thickness of the covering layer gradually increases along the direction from the peripheral area to the central area.

[0012] Optionally, the material of the covering layer is mortar.

[0013] Optionally, the anti-slip structure may include anti-slip particles, anti-slip patterns, or anti-slip grooves.

[0014] Optionally, the thickness of the covering layer is between 3 mm and 10 mm.

[0015] Optionally, the thickness of the main body layer is between 10 mm and 35 mm.

[0016] Compared with the prior art, the technical solution of this utility model embodiment has the following beneficial effects:

[0017] The paving slab provided by this technical solution has a main layer consisting of an ultra-high performance concrete layer. Ultra-high performance concrete possesses characteristics such as ultra-high compressive strength, ultra-high toughness, and ultra-high durability. Using an ultra-high performance concrete layer as the main layer of the paving slab allows it to withstand the high pressure of large vehicles passing through without damage, thus extending the paving slab's service life and preventing inconvenience to the public caused by frequent damage. In addition, a cover layer is provided on the main layer, with an anti-slip structure on its surface. This anti-slip structure increases the coefficient of friction of the paving slab, preventing pedestrians or vehicles from slipping and improving the safety of the paving slab.

[0018] Furthermore, the overlay layer includes a central area and a peripheral area surrounding the central area, wherein the thickness of the overlay layer in the central area is greater than the thickness of the overlay layer in the peripheral area. When paving slabs are laid on the road surface, there is usually a significant height difference between the paving slab and the road surface. If a vehicle drives directly from the lower road surface onto the higher paving slab, it will experience a noticeable "jumping" sensation. By setting the overlay layer to be higher in the center and lower around the edges, the overall paving slab will also be higher in the center and lower around the edges. This reduces the thickness of the paving slab around the edges, minimizing the height difference between the paving slab and the road surface. When a vehicle drives from the road surface onto the paving slab, it first passes through the edges where the height difference is smaller before passing through the center. The thinner peripheral area acts as a transition, allowing the vehicle to smoothly drive onto the paving slab without experiencing a noticeable "jumping" sensation or discomfort. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the paving slab in one embodiment of the present invention;

[0020] Figure 2 yes Figure 1 The diagram shows an enlarged view of a portion of the paving slab.

[0021] Figure 3This is a schematic diagram of the steel mesh structure in one embodiment of this utility model. Detailed Implementation

[0022] As described in the background section, using steel plates as paving slabs has disadvantages such as their smoothness and poor anti-slip performance. Furthermore, if the steel plates deform and require reshaping, they must be transported back to the factory for reshaping using large equipment, which is time-consuming and labor-intensive. Using polyethylene as a paving material to replace steel plates, on the other hand, results in poor compressive strength.

[0023] To address the aforementioned problems, this utility model provides a paving slab, comprising a main layer and a cover layer. The cover layer is located within the main layer, which includes an ultra-high performance concrete layer. Ultra-high performance concrete, due to its ultra-high compressive strength and durability, is used as the main layer of the paving slab, giving it excellent compressive strength, reducing breakage, and extending its service life. Furthermore, the cover layer is situated on the main layer, and its surface is provided with an anti-slip structure. This structure increases the coefficient of friction of the cover layer, improving the paving slab's anti-slip capability and preventing vehicles or pedestrians from slipping, thus enhancing the safety of the paving slab.

[0024] To make the above-mentioned objectives, features and beneficial effects of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the overall structure of the paving slab in one embodiment of the present invention; Figure 2 yes Figure 1 The diagram shows an enlarged view of a portion of the paving slab. Figure 3 This is a schematic diagram of the steel mesh structure in one embodiment of this utility model.

[0026] Reference Figure 1 and Figure 2 The paving slab 10 includes: a main layer 11, which includes an ultra-high performance concrete layer 110; and a cover layer 12, which is located on the main layer 11 and has an anti-slip structure 13 on its surface.

[0027] Ultra-High Performance Concrete (UHPC) material has a compressive strength between 120MPa and 180MPa, and also possesses advantages such as ultra-high durability and excellent wear resistance. Using UHPC as the main layer 11 of the paving slab 10 gives it excellent compressive strength, durability, and wear resistance, thus extending its service life. Secondly, for the same specifications, paving slabs made of UHPC are significantly lighter than steel plates, facilitating transportation and installation. Furthermore, the main layer 11 and its covering layer 12 offer improved anti-slip performance compared to steel plates. Combined with the anti-slip structure 13 on the covering layer 12, this further enhances the anti-slip performance of the paving slab 10, preventing vehicles or pedestrians from slipping and causing accidents, and improving the safety of using the paving slab 10.

[0028] The length of the paving slab 10 is between 3m and 6m, the width is between 1.0m and 1.8m, and the thickness is between 13mm and 40mm. The paving slab 10 should not be too large, as this would make transportation and installation inconvenient; nor should it be too small, to minimize the use of multiple paving slabs 10 spliced ​​together.

[0029] In this embodiment, the paving slab 10 has a length of 6m, a width of 1.8m, and a thickness of 0.03m.

[0030] refer to Figure 3 In this embodiment, the main body layer 11 further includes a steel mesh 120, which is disposed in the ultra-high performance concrete layer 110, and the ultra-high performance concrete layer 110 wraps around and fills the steel mesh 120.

[0031] The thickness of the main layer 11 is between 10mm and 35mm. In this embodiment, the thickness of the main layer 11 is equivalent to the thickness of the ultra-high performance concrete layer 110. The thickness of the main layer 11 is within this range, which can ensure that the ultra-high performance concrete layer 110 completely covers the steel mesh 120, avoiding the safety hazard caused by exposed steel bars in the steel mesh 120; and the thickness of the main layer 11 basically determines the thickness of the paving slab 10. An appropriate thickness of the main layer 11 avoids the paving slab 10 being too thick and heavy, which would affect transportation and laying.

[0032] The steel mesh 120 provides support for the ultra-high performance concrete layer 110, which can improve the stress uniformity of the ultra-high performance concrete layer 110, prevent the ultra-high performance concrete layer 110 from cracking, and improve the strength of the main layer 11.

[0033] In other embodiments, the ultra-high performance concrete layer 110 may not have a steel mesh, but may be directly cast from ultra-high performance concrete material to form the main layer.

[0034] In this embodiment, the steel mesh 120 includes longitudinal steel bars 121 and transverse steel bars 122. The longitudinal steel bars 121 and transverse steel bars 122 of the steel mesh 120 are perpendicular to each other and interwoven to form a mesh. There are gaps between adjacent steel bars. Ultra-high performance concrete material fills the gaps between adjacent steel bars and wraps the steel bars to form an ultra-high performance concrete layer 110.

[0035] It should be noted that, in this embodiment, the longitudinal direction of the steel mesh 120 refers to the length direction of the steel mesh, and the transverse direction refers to the width direction of the steel mesh.

[0036] The spacing between adjacent longitudinal reinforcing bars 121 is between 100mm and 200mm, and the spacing between adjacent transverse reinforcing bars 122 is between 100mm and 200mm. The reinforcing mesh 120 does not need to be too high or too low. Too high a density will increase the weight of the main layer 11, while too low a density will not provide adequate support.

[0037] In this embodiment, the steel bars used in the steel mesh 120 have a diameter of 8mm, which can meet the strength requirements and will not expose the steel bars to the outside of the ultra-high performance concrete layer 110 due to their excessive thickness.

[0038] The reinforcement ratio of the steel mesh 120 is greater than or equal to 0.2%. A reasonable reinforcement ratio can ensure that the steel mesh 120 will not suffer over-reinforcement failure or under-reinforcement failure when under stress, thereby ensuring the safety and quality of the structure.

[0039] In this embodiment, the covering layer 12 is located on the surface of the main body layer 11 facing the vehicle or pedestrian. The covering layer 12 can cover the steel fibers in the ultra-high performance concrete layer 110, so as to avoid the steel fibers being exposed and causing adverse effects on the vehicle or pedestrian.

[0040] The thickness of the covering layer 12 is between 3mm and 10mm, which can ensure complete coverage of the steel fibers in the ultra-high performance concrete layer 110 without making the paving slab 10 too thick.

[0041] In this embodiment, the material of the covering layer 12 is mortar.

[0042] In this embodiment, a covering layer 12 is formed by pouring mortar onto the surface of the ultra-high performance concrete layer 110 and then smoothing the mortar.

[0043] The material of the cover layer 12 is mortar. Even if the cover layer 12 is worn to a certain extent in the later stage of the use of the paving slab 10, it can be restored by grinding the mortar on the surface and then re-pouring. There is no need to transport it to other locations for repair work, and the repair operation is simple and convenient.

[0044] In this embodiment, the anti-slip structure 13 is disposed on the surface of the cover layer 12 opposite to the main body layer 11. The anti-slip structure 13 can increase the friction of the paving slab 10, improve the anti-slip performance of the paving slab 10, prevent vehicles or pedestrians from slipping, and improve the safety of using the paving slab 10.

[0045] The anti-slip structure 13 can be anti-slip particles, anti-slip patterns, or anti-slip grooves. After the mortar is poured to form the covering layer 12, anti-slip particles, anti-slip patterns, or anti-slip grooves can be formed on the surface of the covering layer 12 by roughening, texturing, or grooving the mortar surface. Alternatively, unevenly distributed wear-resistant aggregates, quartz sand, corundum, or ceramic particles can be sprinkled on the mortar surface to form anti-slip particles on the surface of the covering layer 12.

[0046] In some embodiments, the surface of the cover layer 12 may also have two or more anti-slip structures at the same time, such as anti-slip textures and anti-slip particles, to further improve the anti-slip capability.

[0047] In this embodiment, the anti-slip structure 13 adopts an anti-slip groove, which is formed by grooving the surface of the cover layer 12.

[0048] The depth of the anti-slip groove ranges from 1mm to 5mm. An anti-slip groove of appropriate depth can improve the anti-slip performance without damaging the structure of the cover layer 12. In this embodiment, the depth of the anti-slip groove is 2mm.

[0049] In this embodiment, the cover layer 12 includes a central region (not shown) and a peripheral region (not shown) surrounding the central region, wherein the thickness of the cover layer in the central region is greater than the thickness of the cover layer in the peripheral region.

[0050] Specifically, the central area refers to the area where the center point of the cover layer 12 is located, and the surrounding area refers to the area of ​​the cover layer 12 that surrounds the center point from the four sides.

[0051] When paving slabs are laid on the road surface, there will be a significant height difference between them and the road surface. To meet the strength requirements of the paving slabs, this height difference cannot be reduced simply by decreasing the thickness of the paving slabs. In this embodiment, by making the peripheral area of ​​the covering layer 12 thinner than the central area, the paving slab 10 also presents a state where the center is higher than the perimeter. When the paving slab 10 is laid on the road surface, the height difference between the perimeter and the road edge is less than the height difference between the center and the road surface. When a vehicle drives from the road surface onto the paving slab, it first passes through the peripheral area with a smaller height difference. The peripheral area acts as a buffer, allowing the vehicle to smoothly drive onto the paving slab and avoiding the significant "jumping" sensation and discomfort caused by the vehicle suddenly facing the central area with a larger height difference.

[0052] In this embodiment, the thickness of the cover layer 12 gradually increases along the direction from the peripheral area to the central area.

[0053] By gradually changing the thickness of the middle and peripheral areas of the cover layer 12, the thickness change of the cover layer 12 becomes more gradual, which helps to further improve the smoothness and comfort of vehicles driving onto the paving slab.

[0054] The paving slab 10 provided in this embodiment of the utility model has a main layer 11 including an ultra-high performance concrete layer 110, which has ultra-high compressive strength and durability, can reduce damage to the paving slab 10 and improve its service life; a cover layer 12 is provided on the main layer 11, which can cover the steel fibers in the ultra-high performance concrete layer 110 to prevent the steel fibers from being exposed and causing damage to vehicles or pedestrians. In addition, the anti-slip structure 13 on the cover layer 12 can also improve the anti-slip performance of the paving slab 10, prevent vehicles and pedestrians from slipping, and improve the safety of vehicle and pedestrian passage.

[0055] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A paving slab, characterized in that, include: The main layer includes an ultra-high performance concrete layer and a steel mesh, wherein the steel mesh is disposed in the ultra-high performance concrete layer and the ultra-high performance concrete layer encloses and fills the steel mesh. A cover layer is located on the main body layer, and an anti-slip structure is provided on the surface of the cover layer.

2. The paving slab as described in claim 1, characterized in that, The steel mesh includes transverse steel bars and longitudinal steel bars, with the spacing between adjacent transverse steel bars being between 100mm and 200mm, and the spacing between adjacent longitudinal steel bars being between 100mm and 200mm.

3. The paving slab as described in claim 1, characterized in that, The reinforcement ratio of the steel mesh is greater than or equal to 0.2%.

4. The paving slab as described in claim 1, characterized in that, The covering layer includes a central region and a peripheral region surrounding the central region, wherein the thickness of the covering layer in the central region is greater than the thickness of the covering layer in the peripheral region.

5. The paving slab as described in claim 4, characterized in that, The thickness of the covering layer gradually increases along the direction from the peripheral area to the central area.

6. The paving slab as described in claim 1, characterized in that, The material of the covering layer is mortar.

7. The paving slab as described in claim 1, characterized in that, The anti-slip structure includes anti-slip particles, anti-slip textures, or anti-slip grooves.

8. The paving slab as described in claim 1, characterized in that, The thickness of the covering layer is between 3mm and 10mm.

9. The paving slab as described in claim 1, characterized in that, The thickness of the main body layer is between 10mm and 35mm.

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