White-to-black overlay structure

Abstract

The utility model relates to the technical field of road structures, in particular to a white-to-black overlay structure, which comprises an asphalt layer consisting of a water-based epoxy asphalt waterproof anti-crack layer, a second-order resin asphalt bonding layer and a super-viscous and tough epoxy asphalt surface layer, the water-based epoxy asphalt waterproof anti-crack layer, the second-order resin asphalt bonding layer and the super-viscous and tough epoxy asphalt surface layer are laid on the cement layer from bottom to top; the plurality of glass fiber nets are respectively arranged between the water-based epoxy asphalt waterproof anti-crack layer and the cement layer and among the water-based epoxy asphalt waterproof anti-crack layer, the second-order resin asphalt bonding layer and the super-viscous and tough epoxy asphalt surface layer. In the utility model, the overlay structure has strong bonding force between layers, effectively prevents the peeling condition between the cement board layers, reduces the reflection cracks of the cement base layer, is thinner in the thickness of the whole paving structure layer, reduces the use of stones, saves the construction cost, is low-carbon and environment-friendly, saves energy and reduces emission, and has better economic benefit and environmental benefit.

Description

Technical Field

[0001] This utility model relates to the field of road structure technology, specifically to a white-to-black overlay structure. Background Technology

[0002] The term "white-to-black" refers to adding an asphalt surface layer to the original cement concrete pavement. This method mainly involves modifying the original cement concrete pavement by adding asphalt to improve its performance. However, with the widespread use of semi-rigid asphalt pavement, reflective cracks and peeling are prone to occur on the pavement. Utility Model Content

[0003] The purpose of this invention is to address the problems existing in the background technology by proposing a white-to-black overlay structure.

[0004] The technical solution of this utility model: a white-to-black overlay structure, comprising:

[0005] The asphalt layer consists of a water-based epoxy asphalt waterproof and crack-resistant layer, a second-stage resin asphalt bonding layer, and an ultra-adhesive and tough epoxy asphalt surface layer, which are laid from bottom to top on top of the cement layer.

[0006] Multiple fiberglass meshes are installed between the water-based epoxy asphalt waterproof and crack-resistant layer and the cement layer, as well as between the water-based epoxy asphalt waterproof and crack-resistant layer, the second-stage resin asphalt bonding layer, and the super-adhesive and tough epoxy asphalt surface layer.

[0007] There are multiple connectors, all of which are installed on the top of the cement layer, and the top of the connectors extends to the inside of the water-based epoxy asphalt waterproof and crack-resistant layer.

[0008] Preferably, grooves are provided on the upper and lower end faces of the water-based epoxy asphalt waterproof and crack-resistant layer and the second-stage resin asphalt bonding layer, as well as on the lower end face of the ultra-adhesive and tough epoxy asphalt surface layer, and fiberglass mesh is embedded and connected to the inside of the grooves.

[0009] Preferably, the top of the cement layer is provided with multiple slots, and the bottom end of the water-based epoxy asphalt waterproof and crack-resistant layer extends into the cement layer. When the water-based epoxy asphalt waterproof and crack-resistant layer is laid on the cement layer, the extension is fitted into the inside of the slots.

[0010] Preferably, the spacing between two adjacent slots is equal.

[0011] Preferably, the connector is located inside the slot and is fitted and connected to the extension.

[0012] Preferably, the connector includes a connecting frame and a connecting plate;

[0013] The connecting frame is located at the bottom inner side of the slot and is fitted into the bottom of the extension. The connecting frame is grid-shaped.

[0014] The connecting plate is installed on the side of the connecting frame and contacts the inner wall of the slot.

[0015] Preferably, the top of the connecting plate is provided with a plurality of connecting blocks extending toward the water-based epoxy asphalt waterproof and crack-resistant layer, and the connecting blocks are fitted and connected to the bottom of the water-based epoxy asphalt waterproof and crack-resistant layer.

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

[0017] In this invention, the interlayer adhesion of the overlay structure is strong, effectively preventing peeling of cement board layers and reducing reflective cracks in the cement base layer. The overall paving structure layer thickness is relatively thin, reducing the use of stone materials, saving construction costs, and is low-carbon, environmentally friendly, energy-saving and emission-reducing, with good economic and environmental benefits. Attached Figure Description

[0018] Figure 1 This is a perspective view of one embodiment of the present invention.

[0019] Figure 2 This is an exploded view of the overall structure in one embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the connector structure in one embodiment of the present invention.

[0021] Reference numerals: 1. Cement layer; 2. Water-based epoxy asphalt waterproof and crack-resistant layer; 3. Second-stage resin asphalt bonding layer; 4. Super-adhesive and tough epoxy asphalt surface layer; 5. Slot; 6. Extension; 7. Fiberglass mesh; 8. Groove; 9. Connector; 91. Connecting frame; 92. Connecting plate; 93. Connecting block. Detailed Implementation

[0022] Example 1

[0023] like Figure 1-3 As shown, the white-to-black overlay structure proposed in this utility model includes a cement layer 1, a fiberglass mesh 7, a connector 9, and an asphalt layer;

[0024] The asphalt layer consists of a water-based epoxy asphalt waterproof and crack-resistant layer 2, a second-stage resin asphalt bonding layer 3, and a super-adhesive and tough epoxy asphalt surface layer 4. These layers are laid sequentially from bottom to top on top of the cement layer 1. The minimum thickness of each layer is 2 cm. The water-based epoxy asphalt is achieved by water-based polymerization of thermosetting epoxy resin, which is then mixed with asphalt and used, resulting in low initial viscosity. High viscosity and strong permeability can repair micro-defects in asphalt concrete, improve waterproofing and seepage prevention, and achieve strong adhesion and shear and shoving resistance between cement bridge deck and asphalt mixture layer; second-stage resin asphalt achieves non-stick wheel performance after one-time curing and strong adhesion after two-time curing through multiple modification technologies, and has the technical advantages of high bonding strength, good resistance to construction damage, and fast demulsification speed; super-viscosity and toughness epoxy asphalt is used after mixing modifiers, aggregates and asphalt matrix, and has high elasticity and wear resistance, and can achieve the characteristics of high toughness, rutting resistance, crack resistance, skid resistance and noise reduction of asphalt pavement;

[0025] There are multiple fiberglass meshes 7, which are respectively placed between the water-based epoxy asphalt waterproof and crack-resistant layer 2 and the cement layer 1, as well as between the water-based epoxy asphalt waterproof and crack-resistant layer 2, the second-stage resin asphalt bonding layer 3 and the ultra-adhesive and tough epoxy asphalt surface layer 4, to increase the service strength of the water-based epoxy asphalt waterproof and crack-resistant layer 2, the second-stage resin asphalt bonding layer 3 and the ultra-adhesive and tough epoxy asphalt surface layer 4 after laying.

[0026] There are multiple connectors 9, all of which are installed on the top of the cement layer 1, and the top of the connectors 9 extend to the inner side of the water-based epoxy asphalt waterproof and crack-resistant layer 2 to increase the connection strength between (2) and (1).

[0027] In an optional embodiment, grooves 8 are provided on the upper and lower end faces of the waterborne epoxy asphalt waterproof and crack-resistant layer 2 and the second-stage resin asphalt bonding layer 3, as well as on the lower end face of the ultra-adhesive and tough epoxy asphalt surface layer 4. Fiberglass mesh 7 is embedded and connected to the inner side of the grooves 8 to reduce the displacement between the waterborne epoxy asphalt waterproof and crack-resistant layer 2, the second-stage resin asphalt bonding layer 3 and the ultra-adhesive and tough epoxy asphalt surface layer 4 during use.

[0028] In an optional embodiment, a plurality of slots 5 are provided at equal intervals at the top of the cement layer 1, and an extension 6 extends from the bottom of the water-based epoxy asphalt waterproof and crack-resistant layer 2 toward the cement layer 1. When the water-based epoxy asphalt waterproof and crack-resistant layer 2 is laid on the cement layer 1, the extension 6 is fitted into the inner side of the slots 5 to increase the connection area between the water-based epoxy asphalt waterproof and crack-resistant layer 2 and the cement layer 1 during use. At the same time, the inner sidewall of the slots 5 and the inner side of the extension 6 reduce the possibility of the water-based epoxy asphalt waterproof and crack-resistant layer 2 shifting after laying.

[0029] In an optional embodiment, the connector 9 is located inside the slot 5 and is fitted into the extension 6, so as to protect the inner wall of the slot 5 during use.

[0030] In this embodiment, a groove 5 is opened on the top of the cement layer 1, and a connector 9 is snapped into the inside of the groove 5. A fiberglass mesh 7 is laid on the surface of the cement layer 1, and a water-based epoxy asphalt waterproof and crack-resistant layer 2 is spread on top of the cement layer 1, covering the groove 5, connector 9, and fiberglass mesh 7. The water-based epoxy asphalt waterproof and crack-resistant layer 2 fills the groove 5 with an extension 6, which passes through the connector 9 and connects to the bottom of the groove 5. The top of the connector 9 is embedded into the inside of the water-based epoxy asphalt waterproof and crack-resistant layer 2. Simultaneously, the fiberglass mesh 7, the secondary resin asphalt bonding layer 3, and the ultra-adhesive and tough epoxy asphalt surface layer 4 are sequentially laid on the water-based epoxy asphalt waterproof and crack-resistant layer 2, so that the water-based epoxy asphalt waterproof and crack-resistant layer 2 and the secondary resin asphalt bonding layer 3 are connected. The end faces of the bonding layer 3 and the ultra-adhesive and tough epoxy asphalt surface layer 4 are formed by the fiberglass mesh 7 to create grooves 8 that wrap the fiberglass mesh 7. This reduces the sum of the thicknesses of the water-based epoxy asphalt waterproof and crack-resistant layer 2, the second-stage resin asphalt bonding layer 3, and the ultra-adhesive and tough epoxy asphalt surface layer 4, while increasing their tensile strength. Furthermore, the properties of these layers contribute to strong interlayer adhesion, effectively preventing peeling of cement board layers and reducing reflective cracks in the cement base layer. The overall paving structure is thinner, reducing the use of aggregate, saving construction costs, promoting low carbon emissions and environmental friendliness, and improving economic efficiency and the environment.

[0031] Example 2

[0032] like Figure 3 As shown, the present invention proposes a white-to-black cover structure. Compared with the first embodiment, the difference in this embodiment is that the connector 9 includes a connecting frame 91 and a connecting plate 92.

[0033] The connecting frame 91 is located at the bottom inner side of the slot 5 and is fitted into the bottom end of the extension 6. The connecting frame 91 is in the shape of a grid. In use, the connecting frame 91 can be fixed to the inside of the slot 5 by fasteners such as bolts.

[0034] The connecting plate 92 is installed on the side of the connecting frame 91 and contacts the inner wall of the slot 5. It is used to diffuse the force locally applied to the inner wall of the slot 5 during use and to protect the inner wall of the slot 5.

[0035] In an optional embodiment, the top of the connecting plate 92 is provided with a plurality of connecting blocks 93 extending toward the waterborne epoxy asphalt waterproof and crack-resistant layer 2. The connecting blocks 93 are fitted into the bottom end of the waterborne epoxy asphalt waterproof and crack-resistant layer 2 and are used to cooperate with the connecting frame 91 and the connecting plate 92 to limit the waterborne epoxy asphalt waterproof and crack-resistant layer 2 during use, so that the waterborne epoxy asphalt waterproof and crack-resistant layer 2 is blocked when subjected to tensile or thrust forces, thereby increasing the connection strength between the waterborne epoxy asphalt waterproof and crack-resistant layer 2 and the cement layer 1.

[0036] In this embodiment, the connecting plate 92 is connected to the inner wall of the slot 5, so that when the water-based epoxy asphalt waterproof and crack-resistant layer 2 is laid, the extension 6 is located on the side of the connecting plate 92 and passes through the mesh hole of the connecting frame 91 to connect to the bottom end of 51, so that the connecting frame 91 is fitted into the bottom end of the extension 6, and the connecting plate 92 protects the inner wall of the slot 5. When the inner wall of the slot 5 is subjected to force, the connecting plate 92 diffuses the force. At the same time, by setting a connecting block 93 extending into the inner side of the water-based epoxy asphalt waterproof and crack-resistant layer 2 at the top of the connecting plate 92, the connecting block 93 is fitted into the water-based epoxy asphalt waterproof and crack-resistant layer 2, so that the connecting block 93 limits the water-based epoxy asphalt waterproof and crack-resistant layer 2 and reduces the possibility of the water-based epoxy asphalt waterproof and crack-resistant layer 2 being pushed.

[0037] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A white-to-black overlay structure, characterized in that, include: The asphalt layer consists of a water-based epoxy asphalt waterproof and crack-resistant layer (2), a second-stage resin asphalt bonding layer (3), and an ultra-adhesive and tough epoxy asphalt surface layer (4), and the water-based epoxy asphalt waterproof and crack-resistant layer (2), the second-stage resin asphalt bonding layer (3), and the ultra-adhesive and tough epoxy asphalt surface layer (4) are laid on top of the cement layer (1) from bottom to top. Fiberglass mesh (7) is provided in multiples, and multiple fiberglass meshes (7) are respectively set between the water-based epoxy asphalt waterproof and crack-resistant layer (2) and the cement layer (1), as well as between the water-based epoxy asphalt waterproof and crack-resistant layer (2), the second-stage resin asphalt bonding layer (3) and the super-adhesive and tough epoxy asphalt surface layer (4). There are multiple connectors (9), all of which are installed on the top of the cement layer (1) and the top of the connectors (9) extends to the inside of the water-based epoxy asphalt waterproof and crack-resistant layer (2).

2. The white-to-black cover structure according to claim 1, characterized in that, The upper and lower ends of the water-based epoxy asphalt waterproof and crack-resistant layer (2) and the second-stage resin asphalt bonding layer (3) as well as the lower end of the ultra-adhesive and tough epoxy asphalt surface layer (4) are all provided with grooves (8), and the fiberglass mesh (7) is embedded and connected to the inside of the grooves (8).

3. The white-to-black cover structure according to claim 1, characterized in that, The top of the cement layer (1) is provided with multiple slots (5), and the bottom of the water-based epoxy asphalt waterproof and crack-resistant layer (2) extends into the cement layer (1) with an extension (6). When the water-based epoxy asphalt waterproof and crack-resistant layer (2) is laid on the cement layer (1), the extension (6) is fitted into the inside of the slots (5).

4. The white-to-black cover structure according to claim 3, characterized in that, The spacing between two adjacent slots (5) is equal.

5. The white-to-black cover structure according to claim 3, characterized in that, The connector (9) is located inside the slot (5) and is fitted and connected to the extension (6).

6. The white-to-black overlay structure according to claim 5, characterized in that, The connector (9) includes a connecting frame (91) and a connecting plate (92); The connecting frame (91) is set at the bottom inner side of the slot (5) and fitted into the bottom of the extension (6). The connecting frame (91) is in the shape of a grid. The connecting plate (92) is installed on the side of the connecting frame (91) and contacts the inner wall of the slot (5).

7. The white-to-black cover structure according to claim 6, characterized in that, The top of the connecting plate (92) is provided with multiple connecting blocks (93) extending toward the water-based epoxy asphalt waterproof and crack-resistant layer (2), and the connecting blocks (93) are fitted and connected to the bottom of the water-based epoxy asphalt waterproof and crack-resistant layer (2).

Images