Warm-mix asphalt pavement structure made from recycled plastic aggregate

Abstract

This utility model discloses a warm-mix asphalt pavement structure using recycled plastic aggregate, comprising a roadbed leveling layer: a crushed stone layer is provided on top of the roadbed leveling layer, and a medium-grained asphalt concrete layer is laid on top of the crushed stone layer, with grooves formed on the top of the medium-grained asphalt concrete layer. This utility model, through the addition of a PET adhesive layer, enhances the surface free energy and adhesion work of the asphalt in the medium-grained asphalt concrete layer, promoting the spreading and adsorption of asphalt on the surface of the recycled aggregate. Furthermore, the grooves increase the contact area between the medium-grained asphalt concrete layer and the recycled plastic aggregate layer. Simultaneously, the anchor bolts connect the medium-grained asphalt concrete layer and the recycled plastic aggregate layer into a unified whole, further optimizing the stability of the connection. Thus, by applying PET additives and connecting reinforcements, the adhesion between the recycled plastic aggregate and the asphalt concrete pavement layer is improved, thereby enhancing the anti-stripping performance of the asphalt pavement structure.

Description

Technical Field

[0001] This utility model belongs to the field of asphalt pavement technology, and in particular relates to a warm-mix asphalt pavement structure using recycled waste plastic aggregate. Background Technology

[0002] Warm-mix asphalt pavement is a technology that mixes and paves asphalt mixtures at lower temperatures. Compared to traditional hot-mix asphalt mixtures, its construction temperature is typically reduced by about 30°C. This technology not only maintains road performance comparable to HMA (Hot-Mix Asphalt), but also offers significant environmental and economic benefits. Warm-mix asphalt mixtures achieve effective mixing and compaction by adding specific admixtures to reduce the viscosity of the asphalt at lower temperatures. These admixtures may include zeolite, wax, asphalt emulsion, or water, for example...

[0003] For example, RH warm mix technology is developed based on a special warm mix asphalt modifier. It can reduce the construction temperature of hot mix asphalt mixture by lowering the high-temperature viscosity of asphalt binder. In the field of asphalt pavement recycling, the application of waste plastics has shown certain potential. By mixing waste plastic recycled aggregates with asphalt, the stability and fatigue resistance of asphalt can be improved, while the overall weight of the pavement can be reduced, making the pavement lightweight.

[0004] Improving the compatibility of recycled plastic aggregate asphalt layers with asphalt is an important research direction for the application of recycled plastic aggregate in asphalt pavement technology. The adhesion between the two has a significant impact on the overall reliability of asphalt pavement and the actual effect of material application. Therefore, a warm-mix asphalt pavement structure based on recycled plastic aggregate is needed. The adhesion between recycled plastic aggregate and asphalt concrete pavement layers can be improved by applying PET additives and connecting bars, thereby improving the anti-stripping performance of asphalt pavement structures. Utility Model Content

[0005] The purpose of this invention is to provide a warm-mix asphalt pavement structure using recycled plastic aggregate. By applying PET additives and connecting bars, the adhesion between the recycled plastic aggregate and the asphalt concrete pavement layer is improved, thereby enhancing the anti-stripping performance of the asphalt pavement structure and solving the technical problems mentioned in the background art.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a warm-mix asphalt pavement structure using recycled waste plastic aggregate, comprising a roadbed leveling layer: a crushed stone layer is provided on top of the roadbed leveling layer, a medium-grained asphalt concrete layer is laid on top of the crushed stone layer, a groove is provided on top of the medium-grained asphalt concrete layer, a PET adhesive layer is applied to the inner wall of the groove, a recycled waste plastic aggregate layer is provided in the inner cavity of the groove, an emulsified asphalt layer is laid on top of the recycled waste plastic aggregate layer, a fine-grained asphalt layer is provided on top of the emulsified asphalt layer, an anchor bolt hole is provided on top of the medium-grained asphalt concrete layer, an anchor bolt is provided in the inner cavity of the anchor bolt hole, a structural adhesive layer is filled between the surface of the anchor bolt and the inner wall of the anchor bolt hole, and a cross block is integrally formed on the top of the anchor bolt.

[0007] Preferably, the PET adhesive layer is a PET plastic-derived additive layer.

[0008] Preferably, a tape layer is laid on top of the PET adhesive layer, and the tape layer is a mesh layer.

[0009] Preferably, the surface of the anchor rod is integrally formed with a raised ring.

[0010] Preferably, the anchor rod and the cross block are fixedly connected by a connecting block.

[0011] The beneficial effects of this utility model are:

[0012] This invention enhances the surface free energy and adhesion work of medium-grained asphalt concrete layers by adding a PET adhesive layer, promoting the spreading and adsorption of asphalt on the surface of recycled aggregates. Furthermore, the groove design increases the contact area between the medium-grained asphalt concrete layer and the recycled plastic aggregate layer. Simultaneously, the anchor bolts connect the medium-grained asphalt concrete layer and the recycled plastic aggregate layer into a unified whole, further optimizing the stability of their connection. Thus, the application of PET additives and connecting reinforcements improves the adhesion between recycled plastic aggregates and asphalt concrete paving layers, thereby enhancing the anti-stripping performance of asphalt pavement structures.

[0013] 2. By setting up the tape layer, this utility model increases the friction between the PET adhesive layer and the recycled waste plastic aggregate layer, optimizes the connection between the two, and further improves the anti-peeling performance of the connection between the two.

[0014] 3. By setting the convex ring, this utility model increases the contact area between the anchor rod and the structural adhesive layer, thereby improving the reliability of the anchor rod in the inner cavity of the anchor rod hole;

[0015] 4. By setting up a connecting block, this utility model strengthens the connection between the cross block and the anchor rod, avoiding the possibility of breakage due to the small connection point, thereby improving the stability of the connection. Attached Figure Description

[0016] in:

[0017] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0018] Figure 2 This is one embodiment of the present utility model. Figure 1 A magnified view of point A in the middle;

[0019] Figure 3 This is one embodiment of the present utility model. Figure 1 A magnified view of point B in the middle.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1. Subgrade leveling layer; 2. Crushed stone layer; 3. Medium-grained asphalt concrete layer; 4. Groove; 5. PET adhesive layer; 6. Paving strip layer; 7. Waste plastic recycled aggregate layer; 8. Emulsified asphalt layer; 9. Fine-grained asphalt layer; 10. Anchor bolt hole; 11. Anchor bolt; 12. Structural adhesive layer; 13. Cross block; 14. Convex ring; 15. Connecting block. Detailed Implementation

[0022] In the following description, embodiments of the waste plastic recycled aggregate warm-mix asphalt pavement structure of this utility model will be described with reference to the accompanying drawings.

[0023] Example 1: Figure 1-3This invention illustrates a warm-mix asphalt pavement structure using recycled plastic aggregate according to an embodiment of the present invention. It includes a roadbed leveling layer 1; a crushed stone layer 2 is provided on top of the roadbed leveling layer 1; a medium-grained asphalt concrete layer 3 is laid on top of the crushed stone layer 2; a groove 4 is formed on the top of the medium-grained asphalt concrete layer 3; a PET adhesive layer 5 is coated on the inner wall of the groove 4; the PET adhesive layer 5 is a PET plastic-derived additive layer; and a paving strip layer 6, which is a mesh layer, is laid on top of the PET adhesive layer 5. The paving strip layer 6 increases the bonding strength between the PET adhesive layer 5 and the recycled plastic aggregate. The friction between layers 7 optimizes the connection between the two and further improves the anti-stripping performance of the connection. The inner cavity of the groove 4 is provided with a waste plastic recycled aggregate layer 7. The top of the waste plastic recycled aggregate layer 7 is covered with an emulsified asphalt layer 8. The top of the emulsified asphalt layer 8 is provided with a fine-grained asphalt layer 9. An anchor bolt hole 10 is opened on the top of the medium-grained asphalt concrete layer 3. An anchor bolt 11 is provided in the inner cavity of the anchor bolt hole 10. The surface of the anchor bolt 11 and the inner wall of the anchor bolt hole 10 are filled with a structural adhesive layer 12. The top of the anchor bolt 11 is integrally formed with a cross block 13.

[0024] Example 2: Figure 1-3 This invention illustrates a warm-mix asphalt pavement structure using recycled plastic aggregate according to an embodiment of the present invention. The structure includes a roadbed leveling layer 1; a crushed stone layer 2 is placed on top of the roadbed leveling layer 1; a medium-grained asphalt concrete layer 3 is laid on top of the crushed stone layer 2; a groove 4 is formed on the top of the medium-grained asphalt concrete layer 3; a PET adhesive layer 5 is applied to the inner wall of the groove 4; a recycled plastic aggregate layer 7 is placed inside the groove 4; an emulsified asphalt layer 8 is laid on top of the recycled plastic aggregate layer 7; a fine-grained asphalt layer 9 is placed on top of the emulsified asphalt layer 8; anchor bolt holes 10 are formed on the top of the medium-grained asphalt concrete layer 3; and anchor bolts 11 are installed inside the anchor bolt holes 10. A structural adhesive layer 12 is filled between the surface of anchor rod 11 and the inner wall of anchor bolt hole 10. A cross block 13 is integrally formed at the top of anchor rod 11, and a raised ring 14 is integrally formed on the surface of anchor rod 11. The setting of the raised ring 14 increases the contact area between anchor rod 11 and structural adhesive layer 12, and improves the reliability of anchor rod 11 in the inner cavity of anchor bolt hole 10. A connecting block 15 is fixedly connected between anchor rod 11 and cross block 13. The setting of connecting block 15 strengthens the connection between cross block 13 and anchor rod 11, and avoids the occurrence of breakage due to small connection point, thereby improving the stability of the connection.

[0025] Working Principle: In use, the user sequentially lays a crushed stone layer 2 and a medium-grained asphalt concrete layer 3 on top of the roadbed leveling layer 1. Then, grooves 4 and anchor bolt holes 10 are made on the top of the medium-grained asphalt concrete layer 3. Next, the grooves 4 and anchor bolt holes 10 are cleaned. Then, a structural adhesive layer 12 is injected into the inner cavity of the anchor bolt hole 10, and an anchor bolt 11 is inserted. Subsequently, the PET adhesive layer 5 enhances the surface free energy and adhesion work of the asphalt in the medium-grained asphalt concrete layer 3, promoting the spreading and adsorption of asphalt on the surface of the recycled aggregate. Furthermore, the grooves 4 increase the surface free energy and adhesion work of the medium-grained asphalt concrete layer 3. The contact area between the asphalt concrete layer 3 and the waste plastic recycled aggregate layer 7 is calculated. Then, the paving strip layer 6 and the waste plastic recycled aggregate layer 7 are laid in sequence. By setting the anchor bolts 11, the medium-grained asphalt concrete layer 3 and the waste plastic recycled aggregate layer 7 are connected as a whole, which further optimizes the stability of the connection between the two. Then, the emulsified asphalt layer 8 and the fine-grained asphalt layer 9 are laid on top of the waste plastic recycled aggregate layer 7 in sequence. This realizes that the adhesion between the waste plastic recycled aggregate and the asphalt concrete paving layer is improved by the application of PET additives and connecting bars, thereby improving the anti-stripping performance of the asphalt pavement structure.

[0026] In summary, this waste plastic recycled aggregate warm-mix asphalt pavement structure, through the setting of the PET bonding layer 5, enhances the surface free energy and adhesion work of the medium-grained asphalt concrete layer 3, promoting the spreading and adsorption of asphalt on the surface of recycled aggregate. Furthermore, the groove 4 increases the contact area between the medium-grained asphalt concrete layer 3 and the waste plastic recycled aggregate layer 7. Simultaneously, the anchor bolts 11 connect the medium-grained asphalt concrete layer 3 and the waste plastic recycled aggregate layer 7 into a unified whole, further optimizing the stability of their connection. Thus, the application of PET additives and connecting reinforcement enhances the adhesion between the waste plastic recycled aggregate and the asphalt concrete pavement layer, thereby improving the asphalt pavement structure's anti-stripping performance.

Claims

1. A warm mix asphalt pavement structure with recycled aggregates from waste plastics, characterized in that, The roadbed leveling layer (1) includes a crushed stone layer (2) on top of the roadbed leveling layer (1), a medium-grained asphalt concrete layer (3) on top of the crushed stone layer (2), a groove (4) on top of the medium-grained asphalt concrete layer (3), a PET adhesive layer (5) on the inner wall of the groove (4), a waste plastic recycled aggregate layer (7) on the inner cavity of the groove (4), an emulsified asphalt layer (8) on top of the waste plastic recycled aggregate layer (7), a fine-grained asphalt layer (9) on top of the emulsified asphalt layer (8), an anchor bolt hole (10) on top of the medium-grained asphalt concrete layer (3), an anchor bolt (11) on the inner cavity of the anchor bolt hole (10), a structural adhesive layer (12) between the surface of the anchor bolt (11) and the inner wall of the anchor bolt hole (10), and a cross block (13) integrally formed at the top of the anchor bolt (11).

2. The waste plastic reclaimed aggregate warm mix asphalt pavement structure according to claim 1, characterized in that, The PET adhesive layer (5) is a PET plastic-derived additive layer.

3. The warm mix asphalt pavement structure with recycled plastic aggregate according to claim 2, characterized in that, The top of the PET adhesive layer (5) is covered with a tape layer (6), which is a mesh layer.

4. The warm mix asphalt pavement structure with recycled plastic aggregate according to claim 3, characterized in that, The surface of the anchor rod (11) is integrally formed with a raised ring (14).

5. The warm mix asphalt pavement structure with recycled plastic aggregates from waste plastics according to claim 4, characterized in that, The anchor rod (11) and the cross block (13) are fixedly connected by a connecting block (15).

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