Environment-friendly roadbed structure with waste fly ash as filler

Abstract

The utility model discloses an environment-friendly roadbed structure taking waste fly ash as filler in the field of environment-friendly roadbed structures. The environment-friendly roadbed structure comprises a roadbed layer, a cushion base layer is arranged at the top of the roadbed layer, a base material layer is arranged at the top of the cushion base layer, and a surface layer is arranged at the top of the base material layer. In the utility model, firstly, the gravel layer is paved on the roadbed filler layer, the gravel layer is formed by mixing gravels, soil and cement with better gradation, the mixture is fully compacted and then paved on the roadbed layer, then the cushion base layer is paved on the gravel layer, the cushion base layer is a reinforcing rib material layer, and the fly ash gravel filling layer is paved on the cushion base layer. The gravel concrete layer is laid on the impermeable concrete layer, the emulsified asphalt waterproof sealing layer is laid on the impermeable concrete layer, the water-based resin asphalt layer is laid on the emulsified asphalt waterproof sealing layer, and the fly ash gravel filling layer, the gravel concrete layer and the impermeable concrete layer are arranged. The stability and the bearing capacity of the roadbed layer are improved.

Description

Technical Field

[0001] The utility model relates to the field of environmentally friendly roadbed structures, in particular to an environmentally friendly roadbed structure using waste fly ash as filler. Background Art

[0002] Highway construction encompasses a wide range of activities, including highway network planning, survey and design, construction, maintenance, and management. The roadbed is a linear structure constructed from soil or stone, serving as the foundation for the road surface, based on the route's location and specific technical requirements. It bears the weight of the rock and soil, the gravity of the road surface, and the traffic loads transmitted from the road surface. It is a crucial component of the entire highway structure. Roadbed treatment is crucial in highway engineering, particularly in areas with poor hydrogeological conditions. This issue has long plagued researchers, especially in areas subject to high loads over long periods of time.

[0003] However, existing environmentally friendly roadbed structures using waste fly ash as filler have poor compressive strength and durability, which can cause the entire roadbed to sink. Uneven subsidence inevitably leads to uneven road surface conditions, shortening the lifespan of the roadbed structure. Therefore, those skilled in the art have provided an environmentally friendly roadbed structure using waste fly ash as filler to address the issues raised in the background art.

[0004] Therefore, it is necessary to provide an environmentally friendly roadbed structure with waste fly ash as filler to solve the above-mentioned technical problems. The disclosure of the information in this background technology section is only intended to increase the understanding of the overall background of the present invention, and is not necessarily regarded as an admission or suggestion in any form that the information constitutes the prior art known to the general technicians in this field. Utility Model Content

[0005] The purpose of the utility model is to provide an environmentally friendly roadbed structure using waste fly ash as filler to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an environmentally friendly roadbed structure using waste fly ash as filler, comprising a roadbed layer, a cushion layer being provided on the top of the roadbed layer, a base material layer being provided on the top of the cushion layer, a surface layer being provided on the top of the base material layer, the roadbed layer comprising a roadbed filling layer, a crushed stone layer being provided on the top of the roadbed filling layer, the base material layer comprising a fly ash gravel filling layer, a crushed stone concrete layer being provided on the top of the fly ash gravel filling layer, an impermeable concrete layer being provided on the top of the crushed stone concrete layer, the surface layer comprising an emulsified asphalt waterproof seal layer, and a water-based resin asphalt layer being provided on the top of the emulsified asphalt waterproof seal layer.

[0007] As a further solution of the present invention: the roadbed filling layer is a compacted mixture formed by a combination of slag, fly ash and crushed stone blocks, and the particle size of the fly ash is 0.0012-1.16 mm. First, a crushed stone layer is laid on the roadbed filling layer. The crushed stone layer is a mixture of gravel, soil and cement with good gradation. After being fully compacted, it is laid on the roadbed layer. Then, a cushion base layer is laid on the crushed stone layer. The cushion base layer is a reinforcement material layer.

[0008] As a further solution of the present invention: the thickness of the fly ash and gravel filling layer can be 15 to 25 cm. The material of the fly ash and gravel filling layer is a mixture of waste fly ash and silt. This filler has a light weight, low compressibility, and exhibits high mechanical strength in the later stage, thereby ensuring its excellent structural stability. The fly ash and gravel filling layer is laid on the cushion base layer, the crushed stone concrete layer is laid on the impermeable concrete layer, the emulsified asphalt waterproof seal layer is laid on the impermeable concrete layer, and the water-based resin asphalt layer is laid on the emulsified asphalt waterproof seal layer.

[0009] As a further solution of the present invention: the top of the roadbed filling layer is adhered to the bottom of the crushed stone layer. By setting the fly ash gravel filling layer, the crushed stone concrete layer and the impermeable concrete layer, the stability and bearing capacity of the road base layer are improved, the formation of reflective cracks in the road surface can be reduced, and the overall performance of the road surface can be improved.

[0010] As a further solution of the present invention: the top of the fly ash and gravel filling layer is adhered to the bottom of the crushed stone concrete layer, and the top of the crushed stone concrete layer is adhered to the bottom of the impermeable concrete layer. By setting an emulsified asphalt waterproof seal layer, water can be prevented from penetrating from the road surface, making it difficult for moisture brought by rainfall to invade the roadbed, avoiding deformation and damage of the roadbed structure, and achieving the effect of protecting the roadbed.

[0011] As a further solution of the present invention: the top of the emulsified asphalt waterproof seal layer is adhered to the bottom of the water-based resin asphalt layer. Through the setting of the water-based resin asphalt layer, it has excellent stability in high temperature environment, is not easy to soften and flow, and the resin asphalt is rich in aromatic components, which makes it have excellent flame retardant properties, strong adhesion, high cost performance, long life, energy saving and environmental protection, etc. It effectively solves the life problems of conventional micro-surfacing, slurry sealing and other surfacing technologies such as easy falling off, cracking, peeling, and the problem that it cannot be used for cement pavement.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. In the present invention, a crushed stone layer is first laid on the roadbed filling layer. The crushed stone layer is a mixture of gravel, soil and cement with good gradation. After being fully compacted, it is laid on the roadbed. Then, a cushion base is laid on the crushed stone layer. The cushion base is a reinforcement material layer. A fly ash gravel filling layer is laid on the cushion base. A crushed stone concrete layer is laid on the impermeable concrete layer. An emulsified asphalt waterproof seal layer is laid on the impermeable concrete layer. A water-based resin asphalt layer is laid on the emulsified asphalt waterproof seal layer. By arranging the fly ash gravel filling layer, the crushed stone concrete layer and the impermeable concrete layer, the stability and bearing capacity of the roadbed are improved, the formation of reflective cracks on the road surface can be reduced, and the overall performance of the road surface can be improved.

[0014] 2. In the present invention, by setting up an emulsified asphalt waterproof seal layer, water can be prevented from penetrating from the road surface, making it difficult for moisture brought by rainfall to invade the roadbed, avoiding deformation and damage to the roadbed structure, and achieving the effect of protecting the roadbed. By setting up a water-based resin asphalt layer, it has excellent stability in a high temperature environment and is not easy to soften and flow. The resin asphalt is rich in aromatic components, which makes it have excellent flame retardant properties, strong adhesion, high cost performance, long life, energy saving and environmental protection, etc. It effectively solves the life problems of conventional micro-surfacing, slurry sealing and other surfacing technologies such as easy falling off, cracking, peeling, and the problem that it cannot be used for cement pavement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the road base structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the base material layer structure in the utility model;

[0018] Figure 4 This is a schematic diagram of the surface layer structure of the utility model.

[0019] In the figure: 1. Road base layer; 1001. Roadbed filling layer; 1002. Gravel layer; 2. Pad base layer; 3. Base material layer; 3001. Fly ash and gravel filling layer; 3002. Gravel concrete layer; 3003. Impermeable concrete layer; 4. Surface layer; 4001. Emulsified asphalt waterproof seal layer; 4002. Water-based resin asphalt layer. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figures 1 to 4 In an embodiment of the utility model, an environmentally friendly roadbed structure with waste fly ash as filler includes a roadbed layer 1, a cushion base layer 2 is provided on the top of the roadbed layer 1, a base material layer 3 is provided on the top of the cushion base layer 2, and a surface layer 4 is provided on the top of the base material layer 3. The roadbed layer 1 includes a roadbed filling layer 1001, a crushed stone layer 1002 is provided on the top of the roadbed filling layer 1001, the base material layer 3 includes a fly ash gravel filling layer 3001, a crushed stone concrete layer 3002 is provided on the top of the fly ash gravel filling layer 3001, an impermeable concrete layer 3003 is provided on the top of the crushed stone concrete layer 3002, and the surface layer 4 includes an emulsified asphalt waterproof seal layer 4001, and a water-based resin asphalt layer 4002 is provided on the top of the emulsified asphalt waterproof seal layer 4001.

[0022] The roadbed filler layer 1001 is a compacted mixture of slag, fly ash, and crushed stone, and the particle size of the fly ash is 0.0012 to 1.16 mm. First, a crushed stone layer 1002 is laid on the roadbed filler layer 1001. The crushed stone layer 1002 is a mixture of well-graded gravel, soil, and cement. After being fully compacted, it is laid on the roadbed 1. Then, a cushion base 2 is laid on the crushed stone layer 1002. The cushion base 2 is a reinforcement material layer.

[0023] The thickness of the fly ash and gravel filling layer 3001 can be 15 to 25 cm. The fly ash and gravel filling layer 3001 is made of a mixture of waste fly ash and silt. This filler has a light weight, low compressibility, and exhibits high mechanical strength in the later stage, thereby ensuring its excellent structural stability. The fly ash and gravel filling layer 3001 is laid on the cushion base 2, and the crushed stone concrete layer 3002 is laid on the impermeable concrete layer 3003. An emulsified asphalt waterproof seal layer 4001 is laid on the impermeable concrete layer 3003, and a water-based resin asphalt layer 4002 is laid on the emulsified asphalt waterproof seal layer 4001.

[0024] The top of the roadbed filler layer 1001 is bonded to the bottom of the crushed stone layer 1002. The fly ash and gravel filling layer 3001, the crushed stone concrete layer 3002, and the impermeable concrete layer 3003 enhance the stability and bearing capacity of the roadbed 1, thereby reducing the formation of reflective cracks on the road surface and improving the overall performance of the road surface.

[0025] The top of the fly ash and gravel filling layer 3001 is adhered to the bottom of the crushed stone concrete layer 3002, and the top of the crushed stone concrete layer 3002 is adhered to the bottom of the impermeable concrete layer 3003. The provision of the emulsified asphalt waterproof seal layer 4001 can prevent water from penetrating the road surface, making it difficult for moisture brought by rainfall to penetrate the roadbed, thus preventing deformation and damage to the roadbed structure and achieving the effect of protecting the roadbed.

[0026] Among them, the top of the emulsified asphalt waterproof seal layer 4001 is adhered to the bottom of the water-based resin asphalt layer 4002. Through the setting of the water-based resin asphalt layer 4002, it has excellent stability in high temperature environment and is not easy to soften and flow. The resin asphalt is rich in aromatic components, which makes it have excellent flame retardant properties, strong adhesion, high cost performance, long life, energy saving and environmental protection. It effectively solves the life problems of easy falling off, cracking, peeling and other life problems of conventional micro-surfacing, slurry sealing and other surfacing technologies and the problem that it cannot be used for cement pavement.

[0027] The working principle of the utility model is as follows: the working process is firstly to lay a crushed stone layer 1002 on the roadbed filling layer 1001, the crushed stone layer 1002 is made of a mixture of gravel, soil and cement with good gradation, and is laid on the roadbed 1 after being fully compacted, and then the cushion base 2 is laid on the crushed stone layer 1002, the cushion base 2 is a reinforcement material layer, the fly ash gravel filling layer 3001 is laid on the cushion base 2, the crushed stone concrete layer 3002 is laid on the impermeable concrete layer 3003, and the emulsified asphalt waterproof seal layer 4001 is laid on the impermeable concrete layer 3003, and the water-based resin asphalt layer 4002 is laid on the emulsified asphalt waterproof seal layer 4001, and the fly ash gravel filling layer 3001, the crushed stone concrete layer 3002 and the impermeable concrete layer are laid on the impermeable concrete layer. The setting of 3003 improves the stability and bearing capacity of the road base layer 1, can reduce the formation of reflective cracks in the road surface, and improve the overall performance of the road surface. The setting of the emulsified asphalt waterproof seal layer 4001 can prevent water from penetrating the road surface, making it difficult for moisture brought by rainfall to invade the roadbed, avoiding deformation and damage to the roadbed structure, and achieving the effect of protecting the roadbed. The setting of the water-based resin asphalt layer 4002 has excellent stability in high temperature environments and is not easy to soften and flow. The resin asphalt is rich in aromatic components, which makes it have excellent flame retardant properties, strong adhesion, high cost performance, long life, energy saving and environmental protection, etc. It effectively solves the life problems of conventional micro-surfacing, slurry sealing and other surfacing technologies such as easy falling off, cracking, peeling, and the problem that it cannot be used for cement pavement.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0029] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An environmentally friendly roadbed structure using waste fly ash as filler, comprising a roadbed (1), characterized in that: A cushion base layer (2) is provided on the top of the cushion base layer (2), a base material layer (3) is provided on the top of the base material layer (3), a surface layer (4) is provided on the top of the base material layer (3), the road base layer (1) comprises a roadbed filling layer (1001), a crushed stone layer (1002) is provided on the top of the roadbed filling layer (1001), the base material layer (3) comprises a fly ash and gravel filling layer (3001), a crushed stone concrete layer (3002) is provided on the top of the fly ash and gravel filling layer (3001), an impermeable concrete layer (3003) is provided on the top of the crushed stone concrete layer (3002), the surface layer (4) comprises an emulsified asphalt waterproof seal layer (4001), and a water-based resin asphalt layer (4002) is provided on the top of the emulsified asphalt waterproof seal layer (4001).

2. The environmentally friendly roadbed structure using waste fly ash as filler according to claim 1, characterized in that: The roadbed filling layer (1001) is a compacted mixture formed by combining slag, fly ash and crushed stone blocks, and the particle size of the fly ash is 0.0012-1.16 mm.

3. The environmentally friendly roadbed structure using waste fly ash as filler according to claim 1, characterized in that: The thickness of the fly ash and gravel filling layer (3001) can be 15 to 25 cm, and the material of the fly ash and gravel filling layer (3001) is a mixture of waste fly ash and silt.

4. The environmentally friendly roadbed structure using waste fly ash as filler according to claim 1, characterized in that: The top of the roadbed filler layer (1001) is adhered to the bottom of the crushed stone layer (1002).

5. The environmentally friendly roadbed structure using waste fly ash as filler according to claim 1, characterized in that: The top of the fly ash and gravel filling layer (3001) is adhered to the bottom of the crushed stone concrete layer (3002), and the top of the crushed stone concrete layer (3002) is adhered to the bottom of the impermeable concrete layer (3003).

6. The environmentally friendly roadbed structure using waste fly ash as filler according to claim 1, characterized in that: The top of the emulsified asphalt waterproof seal layer (4001) is adhered to the bottom of the water-based resin asphalt layer (4002).

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