Hot mix plant recycled asphalt mixture pavement

Abstract

The utility model discloses a hot mix plant recycled asphalt mixture pavement which comprises a hot rubber recycled macadam asphalt layer, PCR (Polymerase Chain Reaction) modified emulsified asphalt, high-permeability emulsified asphalt, a cement stabilized macadam lower base layer and a soil sand layer which are sequentially arranged from top to bottom, and a waterproof plastic film is arranged between the cement stabilized macadam lower base layer and the soil sand layer. By arranging a series of structures, water can be conveniently shunted, collected and discharged when seeping into the upper part of the cement stabilized macadam lower base layer, so that the phenomenon that the water cannot be naturally discharged in time and is greatly soaked to cause damage can be effectively reduced, the protection effect is improved, and the service life is prolonged; in addition, the high-permeability emulsified asphalt can be reinforced, buffering and force unloading can be conducted when the high-permeability emulsified asphalt is impacted, the phenomenon that when the high-permeability emulsified asphalt is impacted in high-temperature days, large-area overall displacement of the upper asphalt material causes accumulation towards one side to form a channel is reduced, and the use strength is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of road engineering, in particular to a factory-mixed hot-regenerated asphalt mixture pavement. Background Art

[0002] Asphalt pavement is a pavement structure with a certain thickness of asphalt mixture as the surface layer paved on a semi-rigid base. Compared with gravel pavement, the strength and stability of this pavement are greatly improved. Compared with cement concrete pavement, the asphalt pavement has a smooth surface without joints, small driving vibration, low noise, fast traffic opening, simple maintenance, and is suitable for phased construction of the pavement. It is an important structural form of pavement in my country; however, in seasons with frequent rain, underground moisture on the highway can continuously penetrate into the semi-rigid base, thereby aggravating the cracking and damage of the semi-rigid base. When the semi-rigid base is damaged, the bearing capacity of the pavement is reduced, and the asphalt surface layer loses the support of the semi-rigid base, resulting in large-scale damage to the asphalt surface layer.

[0003] The existing asphalt mixture pavement has the following problems: 1. When water seeps into the lower base, it cannot be directly collected and drained, and a large amount of water will soak the lower base, causing it to be damaged, and the protection effect is not ideal; 2. There is a lack of a structure to strengthen the upper buffer and prevent it from dispersing when it is squeezed. When the asphalt material becomes soft and softened in hot weather and is impacted by brakes, it is easy for the stressed part to shift as a whole, causing accumulation to one side to form a channel, and the use strength effect is not ideal; improvement is needed. In view of this, the present application proposes a factory-mixed hot-regenerated asphalt mixture pavement. Utility Model Content

[0004] The utility model aims to provide a factory-mixed hot-regenerated asphalt mixture pavement to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a factory-mixed hot-regenerated asphalt mixture pavement, comprising a hot rubber-regenerated macadam asphalt layer, a PCR-modified emulsified asphalt, a high-permeability emulsified asphalt, a cement-stabilized macadam subbase and a soil-sand layer arranged in sequence from top to bottom, a waterproof plastic film is arranged between the cement-stabilized macadam subbase and the soil-sand layer, a metal reinforcing mesh is arranged between the high-permeability emulsified asphalt and the cement-stabilized macadam subbase, a dispersed water collection and drainage mechanism is pre-installed in the cement-stabilized macadam subbase, and a plurality of buffering and anti-scattering mechanisms are pre-installed in the high-permeability emulsified asphalt along the front-rear direction;

[0006] The dispersed water collection and drainage mechanism includes a water collection main pipe pre-buried in the cement stabilized gravel lower base, a plurality of inclined drainage pipes are connected and fixed to the right bottom of the water collection main pipe, and a plurality of dispersed water collection components are connected and fixed to both sides of the water collection main pipe. The plurality of dispersed water collection components are used to disperse and collect water that has infiltrated into the upper part of the cement stabilized gravel lower base at multiple points, collect the dispersedly collected water in a centralized manner using the water collection main pipe, and drain the centralized collected water outwardly using the drainage pipe;

[0007] The buffering, entanglement and anti-scattering mechanism includes an arc-shaped elastic plate pre-buried in the high-permeability emulsified asphalt and in contact with the top of the metal reinforcement mesh. The arc-shaped elastic plate is fixedly installed on the cement-stabilized gravel lower base layer. The same entanglement component is movably mounted between the two adjacent arc-shaped elastic plates on the left and right. The elasticity of the arc-shaped elastic plate is used to provide buffering when the upper part is squeezed. The entanglement component is used to connect the corresponding two arc-shaped elastic plates together. By connecting them together and cooperating with the arc-shaped protrusion on the top of the arc-shaped part, the effect of segmented reinforcement of the high-permeability emulsified asphalt blockage can be formed, thereby reducing the phenomenon of large-scale displacement accumulation when it softens in high temperature and is impacted by driving friction.

[0008] Preferably, the dispersed water collection assembly includes a water collection branch connected and fixed on the outside of the water collection main pipe, the water collection branch is arranged to be inclined upward, the top of the water collection branch is connected and fixed with a plurality of vertical water pipes, the top of the vertical water pipes is connected and fixed with a water collection cover, and the top of the water collection cover is flush with the top of the cement-stabilized gravel lower base.

[0009] Preferably, the involvement component includes an arc-shaped spring piece, and the adjacent sides of two adjacent arc-shaped elastic plates on the left and right are respectively in movably contact with the two sides of the corresponding arc-shaped spring piece, the bottom of the arc-shaped spring piece is fixedly connected with an elastic column, the bottom of the elastic column is in movably contact with the top of the metal reinforcement mesh, and the two sides of the bottom of the arc-shaped spring piece are fixedly connected with a clamping rod, and clamping holes are provided on both sides of the top of the arc-shaped elastic plates on both sides and on one side of the top of the arc-shaped elastic plates on the side, and the clamping rod is movably mounted in the corresponding clamping hole.

[0010] Preferably, both sides of the bottom of the arc-shaped elastic plate are fixedly connected with positioning pointed cones, and a plurality of positioning pointed cones are pre-buried in the cement-stabilized crushed stone lower base.

[0011] Preferably, the top of the metal reinforcement mesh is provided with a plurality of vertical through holes which are respectively in active contact with the outer sides of the corresponding positioning cones.

[0012] Preferably, the right end of the drainage pipe is flush with the right side of the cement-stabilized crushed stone lower base.

[0013] Preferably, the front end and the rear end of the water collecting main pipe are integrally and fixedly connected with a cover.

[0014] Preferably, the hot rubber recycled crushed stone asphalt layer is formed by mixing hot rubber asphalt and recycled crushed stone.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. This factory-mixed hot-recycled asphalt mixture pavement can collect and discharge water when it infiltrates the upper part of the cement-stabilized gravel sub-base through the cooperation of the dispersed water collection and drainage mechanism and the cement-stabilized gravel sub-base, which can effectively reduce the phenomenon of damage to the cement-stabilized gravel sub-base caused by a large amount of water soaking due to the failure of water to be naturally discharged in time, improve the protection effect, and thus increase its service life;

[0017] 2. This factory-mixed hot-regenerated asphalt mixture pavement can be reinforced in high-permeability emulsified asphalt by setting up a buffering and entanglement anti-scattering mechanism, using a plurality of arc-shaped elastic plates and the method of entanglement of two adjacent arc-shaped elastic plates to form an integrated whole. The arc-shaped elastic plates can be used to buffer and unload the force when the upper part is impacted. The method of entanglement and the arc-shaped protrusion on the top of the arc-shaped part can form an effect of segmented reinforcement of the high-permeability emulsified asphalt jam, reduce the phenomenon of large-scale overall displacement of the upper asphalt material when impacted on high temperature days, and cause accumulation to one side to form a channel, thereby improving the strength of use.

[0018] The utility model is provided with a series of structures, which is convenient for diverting, collecting and discharging water when it penetrates into the upper part of the cement stabilized gravel base layer, and can effectively reduce the phenomenon of damage caused by large-scale immersion of water due to failure to be naturally discharged in time, improve the protection effect and service life, and can reinforce the high-permeability emulsified asphalt and buffer and unload the force when it is impacted, reduce the phenomenon of large-area overall displacement of the upper asphalt material when it is impacted on high temperature days, resulting in accumulation to one side to form a channel, and improve the use strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a factory-mixed hot-regenerated asphalt mixture pavement proposed by the utility model;

[0020] Figure 2 for Figure 1 A schematic cross-sectional structure diagram of ;

[0021] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of part A;

[0022] Figure 4 This is a three-dimensional schematic diagram of a dispersed water collection and drainage mechanism for a factory-mixed hot-regenerated asphalt mixture pavement proposed by the utility model;

[0023] Figure 5 This is a three-dimensional structural schematic diagram of a buffer, entanglement and anti-scattering mechanism for a factory-mixed hot-regenerated asphalt mixture pavement proposed by the utility model.

[0024] In the figure: 1. Hot rubber recycled gravel asphalt layer; 101. PCR modified emulsified asphalt; 102. High permeability emulsified asphalt; 103. Metal reinforcement mesh; 104. Cement stabilized gravel base; 105. Waterproof plastic film; 106. Soil and sand layer; 2. Water collection main pipe; 201. Water collection branch; 202. Vertical water pipe; 203. Water collection cover; 204. Drain pipe; 3. Arc elastic plate; 301. Positioning cone; 4. Arc spring piece; 401. Clamp rod; 402. Elastic column. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figures 1 to 5 As shown, a factory-mixed hot-regenerated asphalt mixture pavement proposed in this embodiment includes a hot rubber-regenerated macadam asphalt layer 1, a PCR-modified emulsified asphalt 101, a high-permeability emulsified asphalt 102, a cement-stabilized macadam subbase 104 and a soil-sand layer 106 arranged in sequence from top to bottom, a waterproof plastic film 105 is arranged between the cement-stabilized macadam subbase 104 and the soil-sand layer 106, a metal reinforcing mesh 103 is arranged between the high-permeability emulsified asphalt 102 and the cement-stabilized macadam subbase 104, a dispersed water collection and drainage mechanism is pre-installed in the cement-stabilized macadam subbase 104, a plurality of buffering and anti-scattering mechanisms are pre-installed in the high-permeability emulsified asphalt 102 along the front-to-back direction, and the hot rubber-regenerated macadam asphalt layer 1 is formed by mixing hot rubber asphalt and regenerated macadam;

[0027] The dispersed water collection and drainage mechanism includes a water collection main pipe 2 pre-buried in the cement stabilized gravel lower base 104, the front and rear ends of the water collection main pipe 2 are integrally fixedly connected with a cover, which plays the effect of blocking the front and rear ends of the water collection main pipe 2 to prevent material from entering, and the right bottom of the water collection main pipe 2 is connected and fixed with a plurality of inclined drainage pipes 204, and the right end of the drainage pipe 204 is flush with the right side of the cement stabilized gravel lower base 104. Both sides of the water collection main pipe 2 are connected and fixed with a plurality of dispersed water collection components, and the plurality of dispersed water collection components are used to disperse and collect water that infiltrates into the upper part of the cement stabilized gravel lower base 104 at multiple points, and the dispersedly collected water is concentrated by using the water collection main pipe 2, and the concentrated collected water is drained outward by using the drainage pipe 204;

[0028] The dispersed water collection component includes a water collection branch 201 connected and fixed on the outside of the water collection main pipe 2, the water collection branch 201 is tilted upward, the top of the water collection branch 201 is connected and fixed with multiple vertical water pipes 202, the top of the vertical water pipes 202 is connected and fixed with a water collection cover 203, and the top of the water collection cover 203 is flush with the top of the cement stabilized gravel lower base 104; the water collection branch 201, the vertical water pipes 202 and the water collection cover 203 are arranged to cooperate, and the water that penetrates into the upper part of the cement stabilized gravel lower base 104 is collected by the water collection cover 203 and diverted to the water collection branch 201 through the corresponding vertical water pipes 202, and the collected water is concentrated and diverted to the water collection main pipe 2 by using multiple water collection branches 201;

[0029] The buffering and anti-scattering mechanism includes an arc-shaped elastic plate 3 embedded in the high-permeability emulsified asphalt 102 and in contact with the top of the metal reinforcement mesh 103. The arc-shaped elastic plate 3 is fixedly installed with the cement-stabilized crushed stone lower base 104, wherein both sides of the bottom of the arc-shaped elastic plate 3 are fixedly connected with positioning cones 301, and multiple positioning cones 301 are embedded in the cement-stabilized crushed stone lower base 104. The arranged positioning cones 301 play the role of positioning the corresponding arc-shaped elastic plate 3. The top of the metal reinforcement mesh 103 is provided with multiple positioning cones 301, which are respectively connected to the corresponding positioning cones 301. 1 The vertical through hole that is in active contact with the outer side plays the role of allowing the positioning cone 301 to pass through movably. The same connection component is movably mounted between the two adjacent arc-shaped elastic plates 3 on the left and right. The elasticity of the arc-shaped elastic plate 3 is used to buffer when the upper part is squeezed. The connection component is used to connect the corresponding two arc-shaped elastic plates 3 together. By connecting them together and cooperating with the arc-shaped protrusion on the top of the arc-shaped member, the effect of segmented reinforcement of the high-permeability emulsified asphalt 102 can be formed, and the phenomenon of large-scale displacement accumulation when it softens in high temperature and is impacted by driving friction can be reduced;

[0030] The connection component includes an arc-shaped spring piece 4, and the adjacent sides of the two arc-shaped elastic plates 3 adjacent to each other on the left and right are respectively in active contact with the two sides of the corresponding arc-shaped spring piece 4, and the bottom of the arc-shaped spring piece 4 is fixedly connected with an elastic column 402, and the bottom of the elastic column 402 is in active contact with the top of the metal reinforcement mesh 103, and the bottom two sides of the arc-shaped spring piece 4 are fixedly connected with a clamping rod 401, and the top two sides of the arc-shaped elastic plates 3 located on both sides and the top one side of the arc-shaped elastic plates 3 located on the side are provided with clamping holes, and the clamping rod 401 is movably mounted in the corresponding clamping holes; the arc-shaped spring piece 4 and the clamping rod 401 are arranged to cooperate, and the arc-shaped spring piece 4 is used to clamp and connect the two adjacent arc-shaped elastic plates 3 on the left and right through the corresponding two clamping rods 401 to form a whole, forming a mutual pulling effect, and the mutual restriction effect of mutual pulling is used to reduce the displacement of the arc-shaped elastic plate 3 due to extrusion.

[0031] The method of using this embodiment is as follows: when laying the cement stabilized gravel lower base 104, the dispersed water collection and drainage mechanism is placed inside it in advance, and the top of the water collection cover 203 is flush with the top of the cement stabilized gravel lower base 104, and then the metal reinforcement mesh 103 is placed, and then the arc elastic plate 3 is installed and positioned by inserting the positioning cone 301 downward, and then the arc spring piece 4 is clamped between the two arc elastic plates 3 through the corresponding two clamping rods 401, and then the high permeability emulsified asphalt 102, PCR modified emulsified asphalt 101 and hot rubber recycled gravel asphalt layer 1 are laid in sequence;

[0032] After laying, when water infiltrates downward to the upper part of the cement stabilized gravel lower base 104, multiple water collecting covers 203 collect the water infiltrating to the upper part of the cement stabilized gravel lower base 104, and guide it to the water collecting branches 201 through the corresponding vertical water pipes 202 respectively. The multiple water collecting branches 201 guide the collected water to the water collecting main pipe 2, and the water is discharged outward through multiple drainage pipes 204. By dividing, collecting and discharging water when it infiltrates to the upper part of the cement stabilized gravel lower base 104, the phenomenon of damage to the cement stabilized gravel lower base 104 caused by a large amount of immersion due to the failure of water to be naturally discharged in time can be effectively reduced, thereby improving the protection effect and thereby increasing its service life;

[0033] The elasticity of multiple arc-shaped elastic plates 3 can be utilized to buffer and unload the impact force when the upper part is subjected to extrusion impact such as braking during driving. The arc-shaped spring pieces 4 are utilized to clamp and connect the two adjacent arc-shaped elastic plates 3 on the left and right through the corresponding two clamping rods 401 to form a whole, thereby forming a mutual pulling effect. The mutual limiting effect of mutual pulling is utilized to reduce the displacement of the arc-shaped elastic plates 3 caused by extrusion. The method of being connected together with the arc-shaped protrusion on the top of the arc-shaped part can form an effect of segmented reinforcement of the high-permeability emulsified asphalt 102, thereby reducing the phenomenon of large-scale overall displacement of the upper asphalt material when subjected to impact on high temperature days, resulting in accumulation to one side to form a channel, thereby improving the strength of use.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A factory-mixed hot recycled asphalt mixture pavement, comprising a hot rubber recycled macadam asphalt layer (1), a PCR modified emulsified asphalt (101), a high permeability emulsified asphalt (102), a cement stabilized macadam subbase (104) and a soil sand layer (106) arranged in sequence from top to bottom, a waterproof plastic film (105) being arranged between the cement stabilized macadam subbase (104) and the soil sand layer (106), and a metal reinforcing mesh (103) being arranged between the high permeability emulsified asphalt (102) and the cement stabilized macadam subbase (104), characterized in that: The cement-stabilized crushed stone lower base (104) is pre-installed with a dispersed water collection and drainage mechanism, and the high-permeability emulsified asphalt (102) is pre-installed with a plurality of buffering and anti-scattering mechanisms along the front-to-back direction; The dispersed water collection and drainage mechanism comprises a water collection main pipe (2) pre-buried in a cement-stabilized crushed stone lower base (104); a plurality of inclined drainage pipes (204) are connected and fixed to the right bottom of the water collection main pipe (2); and a plurality of dispersed water collection components are connected and fixed to both sides of the water collection main pipe (2); The buffering, entanglement and anti-scattering mechanism comprises an arc-shaped elastic plate (3) pre-buried in the high-permeability emulsified asphalt (102) and in contact with the top of the metal reinforcing mesh (103); the arc-shaped elastic plate (3) is fixedly installed on the cement-stabilized crushed stone lower base (104); and the same entanglement component is movably mounted between two adjacent arc-shaped elastic plates (3) on the left and right.

2. The factory-mixed hot-regenerated asphalt mixture pavement according to claim 1, characterized in that: The dispersed water collection component comprises a water collection branch (201) connected and fixed to the outside of the water collection main pipe (2); the water collection branch (201) is arranged to be inclined upward; the top of the water collection branch (201) is connected and fixed to a plurality of vertical water pipes (202); the top of the vertical water pipes (202) is connected and fixed to a water collection cover (203); the top of the water collection cover (203) is flush with the top of the cement-stabilized crushed stone lower base (104).

3. The factory-mixed hot-regenerated asphalt mixture pavement according to claim 2, characterized in that: The linkage assembly comprises an arc-shaped spring piece (4), the adjacent sides of two arc-shaped elastic plates (3) adjacent to each other on the left and right are respectively in active contact with the two sides of the corresponding arc-shaped spring piece (4), the bottom of the arc-shaped spring piece (4) is fixedly connected with an elastic column (402), the bottom of the elastic column (402) is in active contact with the top of the metal reinforcement mesh (103), the bottom of the arc-shaped spring piece (4) is fixedly connected with a clamping rod (401) on both sides of the bottom, the top sides of the arc-shaped elastic plates (3) on both sides and the top side of the arc-shaped elastic plates (3) on the side are provided with clamping holes, and the clamping rod (401) is movably mounted in the corresponding clamping holes.

4. The factory-mixed hot-regenerated asphalt mixture pavement according to claim 1, characterized in that: Positioning pointed cones (301) are fixedly connected to both sides of the bottom of the arc-shaped elastic plate (3), and a plurality of positioning pointed cones (301) are pre-buried in the cement-stabilized crushed stone lower base (104).

5. The factory-mixed hot-regenerated asphalt mixture pavement according to claim 4, characterized in that: The top of the metal reinforcement mesh (103) is provided with a plurality of vertical through holes which are respectively in active contact with the outer sides of corresponding positioning cones (301).

6. The factory-mixed hot-regenerated asphalt mixture pavement according to claim 1, characterized in that: The right end of the drainage pipe (204) is flush with the right side of the cement-stabilized crushed stone lower base (104).

7. The factory-mixed hot-regenerated asphalt mixture pavement according to claim 1, characterized in that: The front end and the rear end of the water collecting main pipe (2) are integrally and fixedly connected with a cover.

8. The factory-mixed hot-regenerated asphalt mixture pavement according to claim 1, characterized in that: The hot rubber recycled crushed stone asphalt layer (1) is formed by mixing hot rubber asphalt and recycled crushed stone.

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