CN114525707A - Composite pavement structure based on high-performance ecological macroporous concrete material - Google Patents
Composite pavement structure based on high-performance ecological macroporous concrete material Download PDFInfo
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- CN114525707A CN114525707A CN202111664390.9A CN202111664390A CN114525707A CN 114525707 A CN114525707 A CN 114525707A CN 202111664390 A CN202111664390 A CN 202111664390A CN 114525707 A CN114525707 A CN 114525707A
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- 239000010426 asphalt Substances 0.000 claims abstract description 41
- 239000011384 asphalt concrete Substances 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/32—Coherent pavings made in situ made of road-metal and binders of courses of different kind made in situ
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
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Abstract
The invention relates to a composite pavement structure based on a high-performance ecological macroporous concrete material, which is characterized by comprising a macroporous asphalt concrete layer and a macroporous cement concrete layer which are stacked one above the other, wherein the thickness ratio of the macroporous asphalt concrete layer to the macroporous cement concrete layer is (3-8) to (10-25). Compared with the prior art, the invention uses the large-gap asphalt concrete to prepare the upper surface layer, uses the large-gap cement concrete to prepare the lower surface layer, and uses the high-bonding-force emulsified asphalt as the middle bonding layer to form the composite pavement structure. The upper surface layer adopts a high-performance ecological large-gap asphalt pavement, the functional characteristics of skid resistance, noise reduction, driving safety and comfort and the like of the asphalt pavement are exerted, and the lower surface layer adopts a high-performance ecological large-gap cement concrete pavement, so that the advantages of high water penetration and storage capacity, high mechanical strength, good durability, long structural life and the like of the asphalt pavement are exerted, and the ecological function, the mechanical property and the durability of the large-gap composite pavement are greatly improved, and the comprehensive manufacturing cost is reduced.
Description
Technical Field
The invention belongs to the technical field of traffic engineering material preparation and pavement structures, and relates to a composite pavement structure based on a high-performance ecological macroporous concrete material.
Background
With the popularization of sponge cities, the requirements on high-performance ecological large-gap concrete materials and the application requirements are higher and higher. As an effective sponge facility, the ecological large-gap pavement has obvious water permeating and storing functions, and is mainly used for sidewalks, walking streets, garden roads and other non-motor vehicle load roads, and areas such as roads, squares, parking lots and the like with light load requirements. The stress concentration phenomenon of the large-gap structure of the ecological large-gap pavement is obviously easy to damage under the load action, and the large-gap structure is less applied to medium and heavy load roads. The part is applied to the regional big gap road surface of well heavy load, often leads to the various gap characteristics of self to show and descends because the promotion of mechanical bearing capacity and durability is excessively emphatically, for example the reduction of water permeability, in case appear rainstorm weather, ponding appears very easily, influences pedestrian and traffic.
In addition, the construction process of the ecological large-gap pavement at the present stage is simple and crude, the surface layer is often blocked by excessive asphalt and cement mortar in the compaction process in the construction process, various functional performances based on gap characteristics are obviously reduced, and the application of the technology is influenced to a certain extent by the problems.
Disclosure of Invention
The invention aims to provide a composite pavement structure based on a high-performance ecological large-pore concrete material, which is used for solving the problems of poor ecological/pore function, low mechanical strength and short service life of the existing large-pore concrete pavement.
The purpose of the invention can be realized by the following technical scheme:
a composite pavement structure based on a high-performance ecological macroporous concrete material comprises a macroporous asphalt concrete layer and a macroporous cement concrete layer which are stacked one above the other, wherein the thickness ratio of the macroporous asphalt concrete layer to the macroporous cement concrete layer is (3-8) to (10-25).
As a preferred technical scheme, the composite pavement structure is suitable for adopting an automatic paving mode to ensure the construction quality, so that the materials used for the macroporous asphalt concrete layer and the macroporous cement concrete layer have the characteristics of good construction workability, compaction without slurry turning, suitability for quick and large-area paving and the like.
Furthermore, the thickness of the macroporous asphalt concrete layer is 3-8cm, the porosity is 10-12%, the macroporous asphalt concrete material is prepared by a batch mixing production mode of a mixing plant dry mixing method (additionally adding a reinforcing agent), the preparation method comprises the steps of conveying the asphalt reinforcing agent (with high-temperature high-viscosity, medium-low temperature thermosetting, high-strength and other modification effects) and fine aggregates into the mixing plant according to the proportion, and uniformly stirring to form the weak thermosetting macroporous asphalt concrete material with good fluidity.
The preparation method comprises the following steps:
m1: adding the first part of SBS modified asphalt, asphalt reinforcing agent, mineral powder and fine aggregate into a mixing plant, and mixing for at least 30 s; (ii) a
M2: adding the coarse aggregate and a second part of SBS modified asphalt into a mixing plant together for mixing, wherein the mixing time is preferably more than 60s, and obtaining a macroporous asphalt concrete material;
wherein the mass ratio of the coarse aggregate, the fine aggregate, the mineral powder, the SBS modified asphalt and the asphalt reinforcing agent is (1900-.
Furthermore, the coarse aggregate is basalt aggregate, and the particle size distribution is 5-10 mm.
Further, the fine aggregate is limestone machine-made sand with the grain diameter of 0-4.75mm, wherein the grain diameter is 0-2.36mm (the mass ratio is 0-25%).
Furthermore, the passing rate of the ore powder with the diameter of more than 0.075mm is 95-100%.
Further, the asphalt reinforcing agent is a granular plasticizing and tackifying asphalt reinforcing agent, contains a small amount of thermosetting rubber particles, and preferably has an average particle size of 1-3 mm.
Further, in the mode of batch-batch mixing production, the mixing amount of each batch should be 10-20m3。
As a preferable technical scheme, the weak thermosetting macroporous asphalt concrete material needs to ensure that the temperature of the mixture is not less than 175 ℃ according to the conveying distance of the mixture and the weather reason, and ensures that the mixture has good construction workability and compaction characteristics before paving.
Furthermore, the thickness of the macroporous cement concrete layer is 10-25cm, the porosity is 15-20%, and the strength reaches above C25 (the compressive strength is more than or equal to 25MPa, and the flexural strength is more than or equal to 3.0). The material is made of a macroporous cement concrete material, and the preparation method of the macroporous cement concrete material comprises the following steps:
n1: adding a first part of water into a mixing plant;
n2: mixing cement and a cement reinforcing agent, adding the mixture, aggregate and a second part of water into a mixing plant respectively for mixing, wherein the mixing time is preferably more than 120s, and obtaining a macroporous cement concrete material;
wherein the mass ratio of the aggregate, the cement, the water and the cement reinforcing agent is 1680:460:155:18, the mass ratio of the first part of water to the second part of water is (0.8-1.8) to 4, the ash collection ratio is 0.20-0.25, and the water-cement ratio is 0.32-0.36.
Furthermore, the particle size distribution of the aggregate is 5-10 mm.
Furthermore, the cement reinforcing agent is powder, has the functions of adhesion promotion and plasticization while improving the strength of concrete, is convenient for the working procedures of automatic paving, compaction and the like of large-gap cement concrete, and has the use amount of 3-5% of the weight of cement.
Further, in the ash ratio, the cement is Portland cement, and is preferably ordinary Portland cement P.O 42.5.5; the aggregate is basalt and can be replaced by limestone with higher quality.
Furthermore, the anti-cracking geotextile is attached to the surfaces of the contraction joint and the expansion joint of the macroporous cement concrete layer, and the shear strength of the anti-cracking geotextile is not less than 0.6 MPa.
Further, a permeable bonding layer is arranged between the macroporous asphalt concrete layer and the macroporous cement concrete layer, and the permeable bonding layer is prepared by uniformly stirring high-bonding emulsified asphalt, a silane coupling agent and permeable layer oil at the mass ratio of 100:4:10 for 5-10 minutes at 300 revolutions per minute of 100-. The high-bonding emulsified asphalt is prepared by Ningbo Daqian municipal engineering Co., Ltd (DQ004 modified), the demulsification time of the high-bonding emulsified asphalt is less than 20min, and the water permeability coefficient is not less than 5 mm/s.
Further, the overflow pipe is buried underground in the macroporous cement concrete layer, the overflow pipe on seted up a plurality of feed liquor holes, can greatly reduce the surface runoff on road surface in the torrential rain period, increase driving safety nature, the overflow pipe diameter should not be greater than 5cm according to the design demand.
Based on the concepts of carbon reduction, energy conservation and sustainable development, the ecological large-gap cement concrete composite pavement structure is formed by preparing an upper surface layer from large-gap asphalt concrete, preparing a lower surface layer from large-gap cement concrete and taking high-bonding-force emulsified asphalt as an intermediate bonding layer while ensuring the ecological function, the mechanical strength and the durability of the ecological large-gap cement concrete material. The upper surface layer adopts a high-performance ecological large-gap asphalt pavement, the functional characteristics of skid resistance, noise reduction, driving safety and comfort and the like of the asphalt pavement are exerted, and the lower surface layer adopts a high-performance ecological large-gap cement concrete pavement, so that the advantages of high permeability, high water storage capacity, high mechanical strength, good durability, long structural life and the like are exerted, thereby greatly improving the ecological function, the mechanical property and the durability of the large-gap composite pavement and reducing the comprehensive manufacturing cost.
The pavement structure of the present invention thus results in a composite pavement structure;
compared with the prior art, the invention has the following characteristics:
1) the large-gap asphalt concrete used in the invention has the characteristics of high temperature and high viscosity, medium and low temperature thermosetting, high strength and the like, can enhance the functional characteristics of water penetration and storage, skid resistance, noise reduction, cooling, driving safety and comfort and the like of the upper surface layer, and experiments show that the anti-flying property of the large-gap asphalt concrete can reach 5-7 percent (the specification is less than or equal to 15 percent), the track dynamic stability is 8000-12000 (the specification is less than or equal to 5000), and the water permeability coefficient is more than or equal to 5 mm/s; the large-gap cement concrete has the characteristics of high viscosity, high plasticity, easy mechanized construction and the like, and exerts the advantages of strong water penetration and storage capacity, high mechanical strength and good durability, and long structural service life, so as to further enhance the overall function, pavement performance and service life of the composite pavement, and experiments show that the compressive strength of the large-gap cement concrete can reach 25-35MPa, the flexural strength can reach 3.0-4.0MPa, and the water permeability coefficient is more than or equal to 10 mm/s;
2) by using the permeable cement layer (strong permeable and water storage capacity, high mechanical strength, good durability and long structural life) to replace the composite pavement of the permeable asphalt pavement lower surface layer, the mechanical property, the pavement performance and the service life of the large-gap ecological pavement are obviously improved while the functional characteristics of the ecological large-gap pavement are ensured. Meanwhile, the automatic paving mode is used for rapid construction, the problems that the construction period is wasted by manual paving of large-gap cement concrete and the paving quality cannot be guaranteed are solved, the realization of the technologies can greatly save manpower and material resources and reduce the comprehensive cost, and the application market of the large-gap ecological pavement in the traffic field, especially in the medium and heavy load field is widened;
3) in the preparation process of the large-gap asphalt concrete material and the large-gap cement concrete material, the asphalt reinforcing agent or the cement reinforcing agent and the fine aggregate are conveyed together, so that the reinforcing agent with strong viscosity at high temperature can be uniformly distributed on the surface of the fine aggregate during mixing, and the reinforcing effect is ensured;
4) when preparing large-gap asphalt concrete, adding the meta-acid asphalt in two batches: the first batch of SBS modified asphalt with high mass ratio is mixed with alkaline limestone fine aggregate, mineral powder and the like, and chemical acid-base adsorption reaction is utilized to facilitate formation of high-performance asphalt mortar; the second batch of the asphalt is less in mass ratio than SBS modified asphalt (softer) and directly coated with coarse aggregates to form a flexible protective film, and then is mixed with high-performance asphalt mortar (harder: mixed with mineral powder and fine aggregates), so that the phenomenon of stress concentration caused by the fact that coarse aggregate tips are in direct contact with the asphalt mortar due to large pores in the mixture is reduced, the interface bonding strength is favorably improved, and the mechanical property and the durability of asphalt concrete are further improved.
Drawings
FIG. 1 is a schematic structural diagram of a composite pavement structure based on a high-performance ecological macroporous concrete material in the embodiment;
FIG. 2 is a diagram of a composite pavement structure based on a high-performance ecological macroporous concrete material in the embodiment;
the notation in the figure is:
1-macroporous asphalt concrete layer, 2-macroporous cement concrete layer, 3-permeable bonding layer, 4-overflow pipe, 5-waterproof bonding layer, 6-cement stabilized macadam base layer and 7-compacted soil base.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example 1:
a preparation method of the macroporous asphalt concrete material comprises the following steps:
the raw materials comprise: 1980kg of basalt coarse aggregate with the particle size distribution of 5-10mm, 195kg of limestone fine aggregate (machine-made sand) with the particle size distribution of 0-4.75mm, 130kg of mineral powder, 133kg of SBS modified asphalt and 24kg of asphalt reinforcing agent (G-10000 high-viscosity modifier provided by Beijing Zhongtian Luo science and technology Co., Ltd.);
m1: injecting 99.8kg of SBS modified asphalt into a mixing plant, uniformly feeding an asphalt reinforcing agent, mineral powder and limestone fine aggregate into a crawler type mixing plant, and mixing at a high speed for 30 s;
m2: adding the rest 33.2kg of SBS modified asphalt and basalt coarse aggregate into the mixing plant, and mixing at high speed (90 revolutions per minute) for 60s to obtain a macroporous asphalt concrete material;
m4: based on the steps, 5 batches of macroporous asphalt concrete materials are prepared by adopting the same proportion, and the mixing amount of each batch is controlled to be 10-20 cubic meters;
by combining a sample preparation and test method of a standard Marshall test piece and a rutting plate in technical Specification for construction of asphalt pavement for roads (JTG F40-2019), the average loss of the mixture in a Kentaburg scattering experiment of the concrete material is 6.3% (far less than the specification requirement; 15%), and the average rutting dynamic stability is 11800 (far more than the specification requirement; 5000 times/mm).
A macroporous cement concrete material is prepared by the following steps:
the raw materials comprise: 1680kg of 5-10mm basalt aggregate, 460kg of P.O 42.5.5 cement, 155kg of water and 18kg of cement reinforcing agent;
n1: injecting 31kg of water wetting and mixing system into the mixing plant;
n2: uniformly mixing cement and a cement reinforcing agent in advance, and then adding the mixture and aggregate into a mixing plant;
n3: adding the rest 124kg of water, and stirring at high speed for 100s to obtain a macroporous cement concrete material;
n4: based on the steps, 40 batches of macroporous cement concrete materials are prepared by adopting the same proportion, and the mixing amount of each batch is controlled to be 5-10 cubic meters.
By combining a sample preparation and test method of a standard compression-resistant and bending-resistant test piece in the concrete physical mechanical property test method standard (GB/T50081-2019), the 28-day-age compression strength of the concrete material under normal-temperature curing is up to 33MPa, and the bending strength is up to 4.0 MPa. Wherein the maintenance adopts covering and watering of civil engineering fabric for 7 days, and at least 3 times a day; when the temperature is higher than 30 ℃, the watering frequency is increased, and the geotextile is ensured to be in a wet state.
The preparation method of the composite pavement structure based on the high-performance ecological macroporous concrete material shown in figure 1 comprises the following steps:
s1: compacting the soil base 7: the first time, the pressure is stabilized by static pressure of a 16-time vibratory roller, the vibration compaction is carried out for 6 times, and the compaction degree is not less than 96 percent;
s2: cement stabilized macadam base 6: the automatic paving is carried out by adopting an MT9500A type paver, the speed is slow (1.5m/min), the loose paving coefficient is 1.25, and the tamping force needs to be determined through a preliminary experiment; then, a double-steel-wheel vibratory roller is adopted, static pressure is carried out for 2 times at a slow speed (1.0km/h), a single-wheel vibratory roller (2.5km/h) is vibrated and compacted, and finally, rubber wheels are rolled (3.0km/h) for 2 times;
s3: waterproof adhesive layer 5: manual coating or mechanical spraying construction is adopted, the coating is uniform, and meanwhile, air immersion is required to be prevented;
s4: large-pore cement concrete layer 2: the transport vehicle and the spreading vehicle synchronously run, spread and unload materials. The pressure parameter of the self-contained tamping system of the paver is set to be 30 percent (20 cm for one-time paving and forming), and the paving speed is about 1.5 m/min; before paving, according to the drainage design requirement, arranging a longitudinal overflow pipe on the surface of the waterproof bonding layer at intervals of 20m, wrapping broken stones with trapezoidal longitudinal sections around the longitudinal overflow pipe, and vibrating and compacting; in the paving starting and suspending stages, the artificial feeding material is leveled by a vibrating plate to make up for the initial error; in the paving process, artificial feeding is carried out at the position with the hole; adopting an artificial polishing mode, and paving and polishing simultaneously to prepare a cement concrete layer 2 with a large pore of 8 cm;
s5: the crack-resistant geotextile with the span of 0.5m is attached to the surfaces of the contraction joint and the expansion joint of the macroporous cement concrete layer 2, the geotextile is a self-adhesive polyester glass fiber fabric produced by Shandong Weifeng Feihuang environmental protection technology limited company, and the shear strength is more than or equal to 0.6 MPa;
s6: uniformly stirring 100-plus-one materials at 300 revolutions per minute for 5-10 minutes to obtain a water-permeable bonding layer material according to a mass ratio of 100:4:10, uniformly coating the water-permeable bonding layer material on the macroporous cement concrete layer 2 and the anti-crack geotextile surface by using a spraying machine to form a water-permeable bonding layer 3, wherein the demulsification time is less than 20 minutes, the paving of large-gap asphalt concrete cannot be carried out before demulsification, and the water permeability coefficient is not less than 5 mm/s; wherein the high-bonding emulsified asphalt is prepared by Ningbo Daqian municipal engineering Co., Ltd. (DQ004 modification);
s7: macroporous asphalt concrete layer 1: the transport vehicle and the paving vehicle synchronously run, and the materials are unloaded while being paved; 1-2 transport vehicles wait, and the paver is continuously constructed at the paving speed of about 2.5 m/min;
thus obtaining the macroporous asphalt concrete layer 1 with the thickness of 2cm and the composite pavement structure (as shown in figure 2).
The average pore space of the pavement reaches 18.6 percent, the water permeability coefficient reaches 6mm/s (the specification is more than or equal to 0.5mm/s), the anti-skid value BPN is more than or equal to 65 (the specification is more than or equal to 42), the anti-flying property reaches 6.3 percent (the specification is less than or equal to 15 percent), the dynamic stability of the track is 11800 (the specification is more than or equal to 5000 times/mm) on average, and the durability is improved by 30 percent.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (10)
1. The composite pavement structure based on the high-performance ecological macroporous concrete material is characterized by comprising a macroporous asphalt concrete layer (1) and a macroporous cement concrete layer (2) which are stacked one above the other, wherein the thickness ratio of the macroporous asphalt concrete layer (1) to the macroporous cement concrete layer (2) is (3-8) - (10-25).
2. A composite pavement structure based on high-performance ecological macroporous concrete materials according to claim 1, characterized in that the macroporous asphalt concrete layer (1) is made of macroporous asphalt concrete materials, and the preparation method of the macroporous asphalt concrete materials comprises the following steps:
m1: adding the first part of SBS modified asphalt, asphalt reinforcing agent, mineral powder and fine aggregate into a mixing plant, and mixing for at least 30 s;
m2: adding the coarse aggregate and a second part of SBS modified asphalt into a mixing plant together, and mixing for at least 60s to obtain a high-performance macroporous asphalt concrete material;
wherein the mass ratio of the coarse aggregate, the fine aggregate, the mineral powder, the SBS modified asphalt and the asphalt reinforcing agent is (1900-.
3. The composite pavement structure based on the high-performance ecological macroporous concrete material as claimed in claim 2, wherein the coarse aggregate is basalt aggregate, and the particle size distribution is 5-10 mm.
4. A composite pavement structure based on high-performance ecological macroporous concrete material according to claim 2, characterized in that the fine aggregate is limestone machine-made sand with a grain size of 0-4.75 mm.
5. The composite pavement structure based on high-performance ecological macroporous concrete materials according to claim 2, characterized in that the mineral powder has a passage rate of 95-100% with a diameter >0.075 mm.
6. A composite pavement structure based on high-performance ecological macroporous concrete materials according to claim 1, characterized in that said macroporous cement concrete layer (2) is made of macroporous cement concrete materials, and the preparation method of said macroporous cement concrete materials comprises:
n1: adding a first part of water into a mixing plant;
n2: mixing cement and a cement reinforcing agent, and then adding the mixture, aggregate and a second part of water into a mixing plant respectively for mixing to obtain a macroporous cement concrete material;
wherein the mass ratio of the aggregate, the cement, the water and the cement reinforcing agent is 1680:460:155:18, and the mass ratio of the first part of water to the second part of water is (0.8-1.8): 4.
7. A composite pavement structure based on high-performance ecological macroporous concrete materials according to claim 1, characterized in that the thickness of the macroporous asphalt concrete layer (1) is 3-8cm and the thickness of the macroporous cement concrete layer (2) is 10-15 cm.
8. The composite pavement structure based on the high-performance ecological macroporous concrete material as claimed in claim 1, wherein the surface of the contraction joint and expansion joint of the macroporous cement concrete layer (2) is adhered with anti-cracking geotextile, and the shear strength of the anti-cracking geotextile is not less than 0.6 MPa.
9. The composite pavement structure based on the high-performance ecological macroporous concrete material as claimed in claim 1, wherein a permeable bonding layer (3) is further arranged between the macroporous asphalt concrete layer (1) and the macroporous cement concrete layer (2), and the permeable bonding layer (3) is prepared by uniformly stirring high-bonding emulsified asphalt, a silane coupling agent and penetrating layer oil at a mass ratio of 100:4:10 for 5-10 minutes at a speed of 100-.
10. The composite pavement structure based on the high-performance ecological macroporous concrete material as claimed in claim 1, wherein an overflow pipe (4) is embedded in the macroporous cement concrete layer (2), and a plurality of liquid inlet holes are formed in the upper half surface of the overflow pipe (4).
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