A water-damage-resistant asphalt road maintenance pavement structure

Abstract

The utility model relates to the technical field of road engineering technology, and specifically to a water-damage resistant asphalt road maintenance pavement structure, comprising an asphalt pavement layer, a bonding layer 1, a disease repair layer, a waterproof layer, a bonding layer 2 and an anti-wear drainage layer, wherein the bonding layer 1 is arranged above the asphalt pavement layer and is in complete contact with the asphalt pavement layer, the disease repair layer is arranged on a side of the bonding layer 1 away from the asphalt pavement layer, the waterproof layer is arranged on a side of the disease repair layer away from the bonding layer 1, the bonding layer 2 is arranged on a side of the waterproof layer away from the disease repair layer, and the anti-wear drainage layer is arranged on a side of the bonding layer 2 away from the waterproof layer, thereby solving the problem in the existing conventional pavement maintenance scheme that the water resistance of the pavement cannot be improved well after the disease is treated, and the water damage still continues to occur.

Description

Technical Field

[0001] The utility model relates to the technical field of road engineering, in particular to a water-damage resistant asphalt road maintenance pavement structure. Background Art

[0002] As the service life of asphalt pavement increases, traffic load and frequency increase, and under the influence of various climatic factors, especially rain, when water enters the asphalt pavement structure from cracks or other paths, the adhesion of asphalt will decrease. Under long-term contact, the asphalt will peel off from the aggregate surface. Coupled with the influence of traffic load, the dynamic water pressure generated will cause the peeled asphalt to be lost and carried out of the asphalt pavement, causing the pavement to become loose, peeled, and have potholes. The asphalt pavement will also have cracks, rutting, potholes and other diseases. Rainwater will enter the pavement structure again through cracks, further causing structural damage, seriously reducing the service life and pavement of the asphalt pavement.

[0003] The occurrence of the above situation increases the potential safety hazard of the road and is an important part of road maintenance. In the existing conventional pavement maintenance plan, after the treatment of the disease, the water resistance of the pavement cannot be improved well, and water damage still continues to occur. Utility Model Content

[0004] The utility model aims to provide a water-damage resistant asphalt road maintenance pavement structure, aiming to solve the technical problem in the prior art that after the disease is treated, the water resistance of the pavement cannot be improved well and the water damage still continues to occur.

[0005] To achieve the above-mentioned purpose, the utility model adopts a water-damage-resistant asphalt road maintenance pavement structure, including an asphalt pavement layer, a bonding layer 1, a defect repair layer, a waterproof layer, a bonding layer 2 and an anti-wear drainage layer, the bonding layer 1 is arranged above the asphalt pavement layer and is in complete contact with the asphalt pavement layer, the defect repair layer is arranged on the side of the bonding layer 1 away from the asphalt pavement layer, the waterproof layer is arranged on the side of the defect repair layer away from the bonding layer 1, the bonding layer 2 is arranged on the side of the waterproof layer away from the defect repair layer, and the anti-wear drainage layer is arranged on the side of the bonding layer 2 away from the waterproof layer.

[0006] Wherein, the bonding layer 1 and the bonding layer 2 are both modified emulsified asphalt.

[0007] Wherein, the spraying amount of the adhesive layer 1 is 180g-240g / m 2 .

[0008] The spraying amount of the second adhesive layer is 130g-180g / m 2 .

[0009] Wherein, the damage repair layer adopts an asphalt mastic crushed stone mixture structure.

[0010] Wherein, the waterproof layer is an epoxy mortar layer.

[0011] Wherein, the anti-wear drainage layer is formed by mixing asphalt binder, coarse aggregate and fine aggregate.

[0012] The utility model discloses a water-damage resistant asphalt road maintenance pavement structure, wherein the asphalt pavement layer is laid with the bonding layer 1 so as to make the bonding with the disease repair layer more firmly, and the road surface diseases are treated and covered, and then the waterproof layer is evenly spread on the disease repair layer to prevent rainwater from directly impacting the disease repair layer, and the wear-resistant drainage layer is firmly bonded to the waterproof layer through the bonding layer 2, so that rainwater can be quickly discharged to the waterway system on both sides of the road in rainy weather, and the water resistance of the road surface cannot be improved well after the disease is treated, and the water damage still continues to occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 The utility model is a schematic structural diagram of a water-damage resistant asphalt road maintenance pavement structure.

[0015] 1- Asphalt pavement layer, 2- Adhesive layer 1, 3- Damage repair layer, 4- Waterproof layer, 5- Adhesive layer 2, 6- Anti-wear drainage layer. DETAILED DESCRIPTION

[0016] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0017] See also Figure 1 , Figure 1 The utility model is a schematic structural diagram of a water-damage resistant asphalt road maintenance pavement structure.

[0018] The utility model provides a water-damage resistant asphalt road maintenance pavement structure, comprising an asphalt pavement layer 1, an adhesive layer 2, a defect repair layer 3, a waterproof layer 4, an adhesive layer 2 5 and an anti-wear drainage layer 6, wherein the adhesive layer 2 is arranged above the asphalt pavement layer 1 and is in complete contact with the asphalt pavement layer 1, the defect repair layer 3 is arranged on a side of the adhesive layer 2 away from the asphalt pavement layer 1, the waterproof layer 4 is arranged on a side of the defect repair layer 3 away from the adhesive layer 2, the adhesive layer 2 5 is arranged on a side of the waterproof layer 4 away from the defect repair layer 3, and the anti-wear drainage layer 6 is arranged on a side of the adhesive layer 2 5 away from the waterproof layer 4;

[0019] In this embodiment, the asphalt pavement layer 1 is laid with the bonding layer 2 to make the bonding with the disease repair layer 3 more firmly, and the road surface defects are treated and covered, and then the waterproof layer 4 is evenly spread on the disease repair layer 3 to prevent rainwater from directly impacting the disease repair layer 3, and the anti-wear drainage layer 6 is firmly bonded to the waterproof layer 4 through the bonding layer 2 5, so that rainwater can be quickly discharged to the waterway system on both sides of the road in rainy weather, thereby effectively enhancing the water damage resistance of the road surface after treatment of defects such as cracks and rutting.

[0020] Furthermore, the bonding layer 1 2 and the bonding layer 2 5 are both modified emulsified asphalt; the spraying amount of the bonding layer 1 2 is 180g-240g / m 2 The spraying amount of the adhesive layer 2 5 is 130g-180g / m 2 .

[0021] In this embodiment, the bonding layer 1 2 composed of emulsified asphalt serves to bond the original asphalt pavement layer 1 and the damage repair layer 3 more firmly. The bonding layer 2 5 also composed of emulsified asphalt serves to bond the waterproof layer 4 and the anti-wear drainage layer 6 firmly together, while providing a certain waterproof and anti-seepage capability.

[0022] Furthermore, the damage repair layer 3 adopts an asphalt mastic crushed stone mixture structure.

[0023] In this embodiment, the damage repair layer 3 uses SBS modified asphalt, warm mix asphalt modifier, and basalt and other stones as aggregates, ground limestone powder as mineral powder, and the oil-stone ratio is controlled at 4% to 7%; 0-3mm accounts for 25% to 35% of the aggregate, 5-10mm accounts for 35% to 50%, 10mm-20mm accounts for 20% to 30%, and mineral powder accounts for 3% to 8%. The bonding layer 2 is used to treat and cover the road surface defects, effectively treat and fill the road surface rutting and potholes and other structural defects, repair the looseness and segregation of the road surface, restore and strengthen the road surface structure performance, stabilize the road surface structure, and at the same time, the dense cover structure also has a certain waterproof ability.

[0024] Furthermore, the waterproof layer 4 is an epoxy mortar layer.

[0025] In this embodiment, the waterproof layer 4 adopts the epoxy mortar process, preferably a two-component epoxy resin material composed of an epoxy resin and a curing agent. The aggregate is preferably quartz sand particles with a particle size of 40-80 mesh. The epoxy resin and the curing agent are mixed and fully stirred until they are uniform for use. The mixed epoxy resin and aggregate are fully stirred and mixed in a ratio of 100:30 to 100-45, and evenly spread on the damage repair layer 3.

[0026] Furthermore, the anti-wear drainage layer 6 is formed by mixing asphalt binder, coarse aggregate and fine aggregate.

[0027] In this embodiment, the asphalt binder used in the wear-resistant drainage layer 6 includes SBS modified asphalt, warm mix asphalt modifier, and stones such as basalt as aggregates, and the oil-stone ratio of the asphalt binder is controlled at 3% to 5%; 0-3mm accounts for 10% to 15% of the aggregate, 5-10mm accounts for 30% to 40%, and 10mm-20mm accounts for 40% to 55%. The wear-resistant drainage layer 6 can effectively direct rainwater to the sewer systems on both sides of the road in rainy weather to prevent water accumulation and damage to the pavement structure. Basically, no dynamic water pressure is generated inside the pavement structure, which is beneficial to the water stability of the asphalt mixture.

[0028] The specific implementation of the water-damage resistant asphalt road maintenance pavement structure is as follows:

[0029] 1. First, clean the original road surface, and evenly spray the preferred SBS modified emulsified asphalt as the bonding layer 2 on the original road surface at a spreading rate of 200g / m 2 .

[0030] 2. After the bonding layer 2 is slightly dry, the damage repair layer 3 is constructed. The compacted thickness of the layer is 3 cm.

[0031] After the construction of the damage repair layer 3 is completed, cool it for about two hours according to the temperature and apply the waterproof layer 4 composed of epoxy mortar.

[0032] After the waterproof layer 4 is dried, the preferred SBS modified emulsified asphalt is sprayed as the bonding layer 2 5, with a spreading rate of 130g / m 2 .

[0033] After the bonding layer 2 5 is dried, the anti-wear drainage layer 6 is constructed with a compacted thickness of 4 cm. Depending on the weather conditions, the layer can be opened to traffic after cooling for about two hours after construction.

[0034] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the utility model.

Claims

1. A water-damage resistant asphalt road maintenance pavement structure, characterized in that: It includes an asphalt pavement layer, a bonding layer 1, a defect repair layer, a waterproof layer, a bonding layer 2 and an anti-wear drainage layer. The bonding layer 1 is arranged above the asphalt pavement layer and is in complete contact with the asphalt pavement layer. The defect repair layer is arranged on the side of the bonding layer 1 away from the asphalt pavement layer. The waterproof layer is arranged on the side of the defect repair layer away from the bonding layer 1. The bonding layer 2 is arranged on the side of the waterproof layer away from the defect repair layer. The anti-wear drainage layer is arranged on the side of the bonding layer 2 away from the waterproof layer.

2. The water-damage resistant asphalt road maintenance pavement structure according to claim 1, characterized in that: The bonding layer 1 and the bonding layer 2 are both modified emulsified asphalt.

3. The water-damage resistant asphalt road maintenance pavement structure according to claim 2, characterized in that: The spraying amount of the adhesive layer 1 is 180g-240g / m 2 .

4. The water-damage resistant asphalt road maintenance pavement structure according to claim 3, characterized in that: The spraying amount of the second adhesive layer is 130g-180g / m 2 .

5. The water-damage resistant asphalt road maintenance pavement structure according to claim 4, characterized in that: The damage repair layer adopts an asphalt horseshoe fat crushed stone mixture structure.

6. The water-damage resistant asphalt road maintenance pavement structure according to claim 4, characterized in that: The waterproof layer is an epoxy mortar layer.

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