CN110436826B - Method for preparing prefabricated drainage ditch by utilizing asphalt pavement surface layer milling material regeneration - Google Patents
Method for preparing prefabricated drainage ditch by utilizing asphalt pavement surface layer milling material regeneration Download PDFInfo
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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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
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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
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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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5076—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with masses bonded by inorganic cements
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/61—Coating or impregnation
- C04B41/65—Coating or impregnation with inorganic materials
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
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- 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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Abstract
The invention belongs to the technical field of road engineering materials, and particularly relates to a method for preparing a prefabricated drainage ditch by utilizing a milling material of an asphalt pavement surface layer. The technical scheme is as follows: the paint is prepared from the following components in parts by weight: 25 to 28 parts of RAP material (0 to 5mm), 16 to 18 parts of RAP material (5 to 10mm), 10 to 12 parts of RAP material (10 to 20mm), 0.2 to 0.3 part of regenerant, 3.2 to 4.8 parts of fiber reinforcing agent, 2.6 to 4.3 parts of stabilizer, 2 to 3 parts of new asphalt, 5 to 7 parts of rubber powder, 16 to 18 parts of corrosion resistant agent, 3 to 4 parts of waterproof and oil-resistant agent, 3.8 to 4.2 parts of rosin and 4 to 6 parts of inorganic nano ceramic heat-insulating coating. The prefabricated drainage ditch manufactured by the special processes of crushing, screening, recombination and regeneration, prefabrication, health maintenance and the like of the waste milling and planing materials is extremely compact, high in strength, durable, long in service life, and strong in oxidation resistance, low-temperature cracking resistance and corrosion (salt corrosion) resistance.
Description
Technical Field
The invention belongs to the technical field of road engineering materials, and particularly relates to a method for preparing a prefabricated drainage ditch by utilizing a milling material of an asphalt pavement surface layer.
Background
In the long-term use process of the asphalt pavement, the use performance of the asphalt pavement is attenuated under the comprehensive actions of heavy traffic, climate environment and the like, so that the indexes of the functional use performance and the structural use performance of the asphalt pavement of partial road sections cannot meet the use requirements, and the asphalt pavement needs to be reconstructed and maintained again. Because of the limitation of the road surface elevation, the road surface major and medium maintenance projects mostly adopt a mode of milling the original road surface and then paving the original road surface again, so that a large amount of waste asphalt milling materials are generated.
If the waste milling material is directly discarded, not only environmental pollution is caused, but also resource waste is caused. On the contrary, after the waste materials are crushed, the additive such as new aggregate, regenerant, asphalt reducer and the like is added to produce regenerated aggregate which meets the standard requirements and meets certain performance indexes, and the regenerated aggregate is reused, so that the problems of stacking and transportation of the waste materials are solved, the environment is protected, the resources are saved, and the construction cost is reduced.
The cement concrete drainage ditch in the highway and the urban road is washed, eroded and frozen by rainwater and road snow-melting agent, and the like, and has poor salt corrosion resistance, so that the cement concrete drainage ditch has typical diseases such as weathering, exposed bones, breakage, fracture and the like, and simultaneously has the problems of high construction cost, resource consumption and the like.
Therefore, the regeneration based on the waste asphalt pavement materials and the forming and development of the prefabricated drainage ditch for the regenerated mixture are developed, the regeneration technology is effectively combined with the construction of auxiliary facilities of pavement engineering, the application problems of poor corrosion resistance, poor durability, low temperature and easy cracking and the like of the conventional concrete drainage ditch are solved, and meanwhile, the river is developed, and the research idea and the direction of the waste material regeneration utilization technology are widened.
Disclosure of Invention
The invention provides a method for preparing a prefabricated drainage ditch by utilizing the regeneration of a milling material of an asphalt pavement surface layer, wherein the prefabricated drainage ditch prepared by special processes of crushing, screening, recombination regeneration, prefabrication, health maintenance and the like of waste milling materials is extremely compact, has long service life, strong oxidation resistance, low-temperature cracking resistance and corrosion (salt corrosion) resistance, has equivalent size and is easy to install, construct and maintain at a later stage; the waste materials are recycled, waste materials are changed into valuable materials, energy is saved, environment is protected, the engineering cost of the drainage ditch is remarkably reduced, the application problems of high maintenance and replacement difficulty, poor corrosion resistance and durability, high cost and the like of the conventional cement concrete drainage ditch are solved, and the economic and social benefits are extremely considerable.
The technical scheme of the invention is as follows:
a method for preparing a prefabricated drainage ditch by utilizing a milling material of a bituminous pavement surface layer is prepared from the following components in parts by weight: 25 to 28 parts of RAP material (0 to 5mm), 16 to 18 parts of RAP material (5 to 10mm), 10 to 12 parts of RAP material (10 to 20mm), 0.2 to 0.3 part of regenerant, 3.2 to 4.8 parts of fiber reinforcing agent, 2.6 to 4.3 parts of stabilizer, 2 to 3 parts of new asphalt, 5 to 7 parts of rubber powder, 16 to 18 parts of corrosion resistant agent, 3 to 4 parts of waterproof and oil-resistant agent, 3.8 to 4.2 parts of rosin and 4 to 6 parts of inorganic nano ceramic heat-insulating coating.
The method for preparing the prefabricated drainage ditch by utilizing the asphalt pavement surface layer milling material for regeneration preferably comprises the following steps of obtaining an old pavement material from an asphalt pavement by adopting a milling mode, crushing and screening to obtain three specifications of aggregates, wherein the specifications are as follows: 0-5mm, 5-10mm, 10-20 mm.
The method for preparing the prefabricated drainage ditch by utilizing the milling material of the asphalt pavement surface layer for regeneration has the preferable scheme that the regenerant is a product RA-5 of Hubeiding Shunshini petrochemical company Limited.
The method for preparing the prefabricated drainage ditch by utilizing the asphalt pavement surface layer milling material for regeneration preferably has the scheme that the fiber reinforcing agent is a polyacrylonitrile fiber reinforcing agent.
The method for preparing the prefabricated drainage ditch by utilizing the milling material of the asphalt pavement surface layer for regeneration preferably adopts the scheme that the stabilizer is lignin fiber.
The method for preparing the prefabricated drainage ditch by utilizing the pavement milling and planing material regeneration of the asphalt pavement has the preferred scheme that the new asphalt is road petroleum asphalt with the number of 90, the softening point of not less than 45 ℃ and the penetration of 80-100 (0.1mm) at 25 ℃.
The method for preparing the prefabricated drainage ditch by utilizing the pavement milling material regeneration of the asphalt pavement preferably adopts the scheme that the corrosion resistant agent is glass scale anti-corrosion daub.
The method for preparing the prefabricated drainage ditch by utilizing the pavement milling material regeneration of the asphalt pavement preferably adopts the scheme that the waterproof and oil-resistant agent is an organic silicon resin waterproof and oil-resistant agent.
The method for preparing the prefabricated drainage ditch by utilizing the pavement milling material regeneration of the asphalt pavement preferably adopts the scheme that the inorganic nano ceramic heat-insulating coating is JRC-B02 which is a product of Zhi Ti science and technology company, and consists of an inorganic adhesive, nano zirconia VK-R30 and hollow microspheres.
The method for preparing the prefabricated drainage ditch by utilizing the pavement milling material of the asphalt pavement to regenerate comprises the following steps:
step one, crushing and screening waste materials of a surface layer of a milled asphalt pavement to obtain RAP materials of three specifications meeting quality requirements, wherein the specifications are as follows: 0-5mm, 5-10mm, 10-20 mm;
step two, heating the mixing equipment I to 120-135 ℃, and adding 16-18 parts of RAP (5-10mm), 10-12 parts of RAP (10-20mm), 0.08-0.12 part of regenerant, 1.6-2.8 parts of fiber reinforcing agent, 1.5-3 parts of stabilizer and 2-3 parts of new asphalt in the step one together according to the proportion into the mixing equipment I to be fully stirred for 10-12min to obtain a mixture I for later use;
step three, heating the mixing equipment II to 170-175 ℃, adding 25-28 parts of RAP material (0-5mm) in the step one, 0.1-0.2 part of regenerant, 1.3-2.5 parts of fiber reinforcing agent, 1.2-2.6 parts of stabilizer and 5-7 parts of rubber powder into the mixing equipment II according to a proportion, fully stirring for 8-10min, and preserving heat for 15min to ensure that the RAP material and the matrix asphalt fully melt and swell to react to obtain a mixture II for later use;
placing the first mixture and the second mixture into a vibrating machine, and adding 16-18 parts of corrosion resistant agent and 3.8-4.2 parts of rosin; starting a vibrating and stirring device, heating to 160-170 ℃, and vibrating and stirring for 6-8 min; when the temperature is reduced to 110 ℃, adding 3-4 parts of waterproof and oil-resistant agent, and vibrating and stirring for 3-5min to obtain a mixture III for later use;
placing the mixture III in a prefabricated drainage ditch machine, performing static pressure for 25-30s, and preserving for 20-30 min;
and step six, spraying 4-6 parts of inorganic nano ceramic thermal insulation coating on the product cured in the step five to obtain the prefabricated drainage ditch.
Wherein:
the regenerant is preferably a special regenerant RA-5 for the product road of Hubeidingshun petrochemical company Limited, and has the main functions of: the activity of the asphalt in the waste asphalt pavement milling material is excited, the agglomerated asphalt is re-melted and dispersed, the colloid structure of the asphalt is adjusted, the brittle and hard old asphalt mixture is softened, the rheological property of the asphalt is improved, and the waste mixture recovers or approaches the original performance.
The fiber reinforcing agent is polyacrylonitrile fiber reinforcing agent, preferably Shenzhen Shenchuan Delannit company
The polyacrylonitrile fiber reinforcing agent mainly has the following functions: the crack resistance and the integral strength of the prefabricated drainage ditch are improved; improving the impermeability of the concrete: the compactness of the prefabricated drainage ditch is improved and the formation of through capillary pores is reduced or blocked by three-dimensional disorderly distribution of a plurality of polyacrylonitrile fibers in the prefabricated drainage ditch, so that the impermeability of the prefabricated drainage ditch is improved; increase the toughness of prefabricated escape canal, polyacrylonitrile fibre has certain percentage elongation and higher tensile strength, when prefabricated escape canal pressurized or tensile destruction, at first is fibrous tensile deformation, external absorption of stress to increase the toughness of prefabricated escape canal. And fourthly, the impact resistance of the prefabricated drainage ditch is improved, the polyacrylonitrile fiber reinforcing agent can absorb external stress energy to a large extent, and the absorption capacity of the prefabricated drainage ditch on the impact energy is improved.
The stabilizer is lignin fiber, preferably the lignin fiber for the reclaimed Terley, and has the main functions of: the chemical stability and the thickening anti-cracking performance of prefabricated escape canal are improved, and simultaneously, the addition of lignin fiber can reduce the amount of the internal space of the prefabricated escape canal, namely, the internal water content of the prefabricated escape canal is reduced, so that the anti-freezing performance of the prefabricated escape canal is improved.
The new asphalt is road petroleum asphalt with the number of 90, the softening point of more than or equal to 45 ℃, the penetration at 25 ℃ of 80-100 (0.1mm), and the main functions are as follows: the cementing material in the regenerated mixture is supplemented, and the cementing capacity of the mixture is improved.
The rubber powder is waste tire rubber powder, preferably 100-mesh 120-mesh fine rubber powder of Shandong Zhouhihe Huayuan rubber company, and mainly has the following functions: greatly improves the adhesive property of the cementing material in the regenerated mixture, makes the prefabricated drainage ditch compact and durable, and comprehensively improves the high-temperature stability, low-temperature flexibility, ageing resistance, water damage resistance and the like of the prefabricated drainage ditch.
The corrosion-resistant agent is preferably glass flake anticorrosive mortar produced by Hebei Jia Xin Bao chemical company, and has the main functions of: the comprehensive performances of salt corrosion resistance, weathering resistance, ultraviolet resistance and the like of the prefabricated drainage ditch are improved.
The waterproof and oil-resistant agent is an organic silicon resin waterproof and oil-resistant agent of Hubei environmental chemical Limited company, is composed of a silicon resin solution, a penetrating agent and a tackifier, and mainly has the following functions: the waterproof and oil (gasoline and diesel) erosion resistance of the prefabricated drainage ditch is improved.
The rosin is preferably rosin powder crystal for industrial products of chemical companies of Jinnsida, and has the main functions of: the high-temperature stability of the mixture of the prefabricated drainage ditch is improved, and the stiffness modulus of asphalt in the regenerated mixture is improved, so that the strength of the prefabricated drainage ditch is improved.
The inorganic nano ceramic heat-insulating coating is preferably JRC-B02 product of Zhi Ti science and technology company, and mainly has the following functions: the spraying of the inorganic nano ceramic heat-insulating coating on the surface layer of the prefabricated drainage ditch aims to improve the overall stability (the high-temperature stability performance) of the prefabricated drainage ditch in a high-temperature period in summer and the energy storage function (the low-temperature anti-cracking performance) of the prefabricated drainage ditch in a low-temperature period in winter.
The invention has the beneficial effects that:
1) the asphalt pavement surface layer milling material regeneration prefabricated drainage ditch has the advantages that the raw materials are easy to obtain, the drainage ditch is prefabricated through a special preparation process, the drainage ditch has excellent mechanical and road performance, and the high standards and high requirements on waste material regeneration utilization technology under increasingly heavy traffic load and severe weather environment conditions are completely met.
2) The technology adopted by the invention can recycle the old pavement materials by 100 percent, changes waste into valuable, solves the problem of environmental pollution caused by a large amount of waste materials generated by the maintenance and reconstruction of the pavement, saves a large amount of sandstone materials and asphalt resources, reduces the construction cost, enables the limited construction and maintenance funds to exert the maximum efficiency, and accords with the national policy of scientific development and sustainable development, thereby having great significance.
3) Compared with the conventional concrete drainage ditch, the asphalt pavement waste material regeneration prefabricated drainage ditch has the advantages of lower manufacturing cost (the periodic maintenance cost can be saved by more than 28%), high strength, durability, excellent salt corrosion resistance and weathering resistance, equivalent size and easiness in installation, construction and later-period maintenance.
4) The concrete drainage ditch solves the problems of high manufacturing cost, poor salt corrosion resistance, severe weathering and oxidation, difficult maintenance and replacement, resource consumption and the like of the conventional concrete drainage ditch for the highway and the urban road, and greatly improves the road performance, construction workability and the like of the drainage ditch. Meanwhile, the method opens up a river and widens the research thought and direction of the old material recycling technology.
Detailed Description
Example 1
A method for preparing a prefabricated drainage ditch by utilizing a milling material of a bituminous pavement surface layer is prepared from the following components in parts by weight: RAP material (0-5 mm): 25 parts of RAP material (5-10 mm): 16.5 parts of RAP material (10-20 mm): 10.5 parts of a regenerant: 0.24 part of fiber reinforcing agent: 3.7 parts of stabilizer: 2.8 parts of new asphalt: 2.4 parts of rubber powder: 5.6 parts of corrosion-resistant agent: 16 parts of water-proof and oil-resistant agent: 3.2 parts of rosin: 3.85 parts of inorganic nano ceramic heat-insulating coating: 4.25 parts. The regenerant is RA-5 which is a special regenerant for the product road of Hubeidingshun petrochemical company Limited. The fiber reinforcing agent is Shenzhen Hichuan Delandmate company
A polyacrylonitrile fiber reinforcing agent. The stabilizer is lignin fiber for crofton. The new asphalt is road petroleum asphalt with the number of 90, the producing area is Liaohe, the softening point is more than or equal to 45 ℃, and the penetration at 25 ℃ is 80-100 (0.1 mm). The rubber powder is fine rubber powder of 120 meshes, 100 of Shandong Zhouzui Huayuan rubber company. The corrosion resistant agent is glass flake anticorrosive mortar of Hebei Jia Xin Bao chemical company. The waterproof and oil-resistant agent is an organic silicon resin waterproof and oil-resistant agent in the environment chemical industry. Product industry of rosin selection from chemical company of JindengdaliUsing rosin powder crystals. The inorganic nano ceramic heat-insulating coating is a product JRC-B02 of Zhi Ti science and technology company, and consists of an inorganic adhesive, nano zirconia VK-R30 and hollow microspheres.
The method specifically comprises the following steps:
step one, crushing and screening waste materials of a surface layer of a milled asphalt pavement to obtain RAP materials of three specifications meeting quality requirements, wherein the specifications are as follows: 0-5mm, 5-10mm, 10-20 mm;
step two, heating the mixing equipment I to 120-135 ℃, and adding 16.5 parts of RAP (5-10mm), 10.5 parts of RAP (10-20mm), 0.09 part of regenerant, 2 parts of fiber reinforcing agent, 1.7 parts of stabilizer and 2.4 parts of new asphalt in the step I together into the mixing equipment I according to the proportion and fully stirring for 8-10min to obtain a mixture I for later use;
step three, heating the mixing device II to 170-175 ℃, adding 25 parts of RAP material (0-5mm) in the step I, 0.15 part of regenerant, 1.7 parts of fiber reinforcing agent, 1.1 parts of stabilizer and 5.6 parts of rubber powder into the mixing device II together according to a proportion, fully stirring for 8-10min, and preserving heat for 15min to ensure that the RAP material and the matrix asphalt fully melt and swell and react to obtain a mixture II for later use;
placing the first mixture and the second mixture in a vibrating machine, and adding 16 parts of corrosion resistant agent and 3.85 parts of rosin; starting a vibrating and stirring device, heating to 160-170 ℃, and vibrating and stirring for 6-8 min; when the temperature is reduced to 110 ℃, adding 3.2 parts of waterproof and oil-resistant agent, and vibrating and stirring for 3-5min to obtain a mixture III for later use;
placing the mixture III in a prefabricated drainage ditch machine, performing static pressure for 25-30s, and preserving for 20-30 min;
and step six, spraying 4.25 parts of inorganic nano ceramic thermal insulation coating on the product cured in the step five to obtain the prefabricated drainage ditch.
Example 2
The difference from the embodiment 1 is that the components by weight are as follows: RAP material (0-5 mm): 26.5 parts of RAP material (5-10 mm): 17 parts of RAP material (10-20 mm): 11.5 parts of a regenerant: 0.26 part of fiber reinforcing agent: 4.2 parts of stabilizer: 4.1 parts of new asphalt: 2.6 parts of rubber powder: 6.2 parts of corrosion-resistant agent: 17.2 parts of water-proof and oil-resistant agent: 3.5 parts of rosin: 3.99 parts of inorganic nano ceramic heat-insulating coating: 4.7 parts. The distribution ratio is as follows: in the second step, 0.1 part of regenerant, 2.2 parts of fiber reinforcing agent and 2.6 parts of stabilizer; in the third step, the regenerant (0.16 part), the fiber reinforcing agent (2 parts) and the stabilizer (1.5 parts) are added.
Example 3
The difference from the embodiment 1 is that the components by weight are as follows: RAP material (0-5 mm): 28 parts of RAP material (5-10 mm): 18 parts of RAP material (10-20 mm): 12 parts of a regenerant: 0.28 part of fiber reinforcing agent: 4.6 parts of stabilizer: 4.3 parts of new asphalt: 2.8 parts of rubber powder: 6.8 parts of corrosion resistant agent: 17.6 parts of water-proof and oil-resistant agent: 3.9 parts of rosin: 4.15 parts of inorganic nano ceramic heat-insulating coating: 5.4 parts. The distribution ratio is as follows: in the second step, 0.12 part of regenerant, 2.4 parts of fiber reinforcing agent and 2.7 parts of stabilizer; in the third step, the regenerant (0.16 part), the fiber reinforcing agent (2.2 parts) and the stabilizer (1.6 parts) are added.
The performance detection results of the asphalt pavement surface milling material regeneration prefabricated drainage ditch for the asphalt pavement surface layer in the embodiments 1-3 are shown in table 1:
TABLE 1
Comparative example
And selecting a cement concrete drainage ditch commonly used in road engineering. The results of the performance measurements are shown in table 2:
TABLE 2
As can be seen from tables 1 to 2, the performance of the asphalt pavement surface milling material regenerated prefabricated drainage ditch prepared according to embodiments 1 to 3 of the present invention can meet the technical requirements of the technical specification for asphalt pavement construction for roads (JTG F40) issued by the ministry of transportation of the people's republic of china, each performance index is better than that of the conventional concrete drainage ditch, and the compressive strength is equivalent to that of the concrete drainage ditch. Meanwhile, the asphalt pavement surface layer milling material regeneration prefabricated drainage ditch is extremely compact, high in strength and durability, strong in oxidation resistance, low-temperature cracking resistance and corrosion (salt corrosion) resistance, capable of greatly improving the high-temperature and low-temperature performance and durability of the drainage ditch, and remarkably reducing the production and use cost.
The present invention is not limited to the above-described examples, and the embodiments of the present invention are described in the above-described examples and the description, but various modifications and changes may be made without departing from the spirit and scope of the present invention, and these modifications and changes fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The method for preparing the prefabricated drainage ditch by utilizing the pavement milling and planing material of the asphalt pavement is characterized by comprising the following components in parts by weight: 25 parts of 0-5mm RAP material, 16.5 parts of 5-10mm RAP material, 10.5 parts of 10-20mm RAP material, 0.24 part of regenerant, 3.7 parts of fiber reinforcing agent, 2.8 parts of stabilizer, 2.4 parts of new asphalt, 5.6 parts of rubber powder, 16 parts of corrosion resistant agent, 3.2 parts of waterproof and oil resistant agent, 3.85 parts of rosin and 4.25 parts of inorganic nano ceramic heat insulation coating; the stabilizer is lignin fiber, the new asphalt is road petroleum asphalt with the number of 90, the softening point is more than or equal to 45 ℃, the penetration at 25 ℃ is 80-100 (0.1mm), and the corrosion resistant agent is glass flake anti-corrosion daub, and the method specifically comprises the following steps:
step one, crushing and screening waste materials of a surface layer of a milled asphalt pavement to obtain RAP materials of three specifications meeting quality requirements, wherein the specifications are as follows: 0-5mmRAP material, 5-10mmRAP material, 10-20mmRAP material;
step two, heating the mixing equipment I to 120-135 ℃, and adding 16.5 parts of the RAP material with the diameter of 5-10mm, 10.5 parts of the RAP material with the diameter of 10-20mm, 0.09 part of a regenerant, 2 parts of a fiber reinforcing agent, 1.7 parts of a stabilizer and 2.4 parts of new asphalt in the mixing equipment I according to the proportion, and fully stirring for 10-12min to obtain a mixture I for later use;
step three, heating the mixing equipment II to 170-175 ℃, adding 25 parts of 0-5mm RAP material, 0.15 part of regenerant, 1.7 parts of fiber reinforcing agent, 1.1 parts of stabilizer and 5.6 parts of rubber powder in the step one into the mixing equipment II together according to a proportion, fully stirring for 8-10min, and preserving heat for 15min to ensure that the RAP material and the matrix asphalt fully melt and swell and react to obtain a mixture II for later use;
placing the first mixture and the second mixture in a vibrating machine, and adding 16 parts of corrosion resistant agent and 3.85 parts of rosin; starting a vibrating and stirring device, heating to 160-170 ℃, and vibrating and stirring for 6-8 min; when the temperature is reduced to 110 ℃, adding 3.2 parts of waterproof and oil-resistant agent, and vibrating and stirring for 3-5min to obtain a mixture III for later use;
placing the mixture III in a prefabricated drainage ditch machine, performing static pressure for 25-30s, and preserving for 20-30 min;
and step six, spraying 4.25 parts of inorganic nano ceramic thermal insulation coating on the product cured in the step five to obtain the prefabricated drainage ditch.
2. The method for preparing the prefabricated drainage ditch by utilizing the pavement milling and planing material of the asphalt pavement is characterized by comprising the following components in parts by weight: 26.5 parts of 0-5mm RAP material, 17 parts of 5-10mm RAP material, 11.5 parts of 10-20mm RAP material, 0.26 part of regenerant, 4.2 parts of fiber reinforcing agent, 4.1 parts of stabilizer, 2.6 parts of new asphalt, 6.2 parts of rubber powder, 17.2 parts of corrosion resistant agent, 3.5 parts of waterproof and oil-resistant agent, 3.99 parts of rosin and 4.7 parts of inorganic nano ceramic heat insulation coating, wherein the stabilizer is lignin fiber, the new asphalt is road petroleum asphalt with the number of 90, the softening point is not less than 45 ℃, the needle penetration at 25 ℃ is 80-100 (0.1mm), and the corrosion resistant agent is glass flake corrosion resistant daub, and specifically comprises the following steps:
step one, crushing and screening waste materials of a surface layer of a milled asphalt pavement to obtain RAP materials of three specifications meeting quality requirements, wherein the specifications are as follows: 0-5mmRAP material, 5-10mmRAP material, 10-20mmRAP material;
step two, heating the mixing equipment I to 120-135 ℃, and adding 17 parts of the RAP material with the diameter of 5-10mm, 11.5 parts of the RAP material with the diameter of 10-20mm, 0.1 part of a regenerant, 2.2 parts of a fiber reinforcing agent, 2.6 parts of a stabilizer and 2.6 parts of new asphalt in the mixing equipment I according to the proportion, and fully stirring for 10-12min to obtain a mixture I for later use;
step three, heating the mixing device II to 170-175 ℃, adding 26.5 parts of the 0-5mm RAP material obtained in the step one, 0.16 part of a regenerant, 2 parts of a fiber reinforcing agent, 1.5 parts of a stabilizer and 6.2 parts of rubber powder into the mixing device II together according to a proportion, fully stirring for 8-10min, and preserving heat for 15min to ensure that the RAP material and the matrix asphalt fully melt and swell and react to obtain a mixture II for later use;
placing the first mixture and the second mixture in a vibrating machine, and adding 17.2 parts of corrosion resistant agent and 3.99 parts of rosin; starting a vibrating and stirring device, heating to 160-170 ℃, and vibrating and stirring for 6-8 min; when the temperature is reduced to 110 ℃, adding 3.5 parts of waterproof and oil-resistant agent, and vibrating and stirring for 3-5min to obtain a mixture III for later use;
placing the mixture III in a prefabricated drainage ditch machine, performing static pressure for 25-30s, and preserving for 20-30 min;
and step six, spraying 4.7 parts of inorganic nano ceramic thermal insulation coating on the product cured in the step five to obtain the prefabricated drainage ditch.
3. The method for preparing the prefabricated drainage ditch by utilizing the pavement milling and planing material of the asphalt pavement is characterized by comprising the following components in parts by weight: 28 parts of 0-5mm RAP material, 18 parts of 5-10mm RAP material, 12 parts of 10-20mm RAP material, 0.28 part of regenerant, 4.6 parts of fiber reinforcing agent, 4.3 parts of stabilizer, 2.8 parts of new asphalt, 6.8 parts of rubber powder, 17.6 parts of corrosion resistant agent, 3.9 parts of waterproof and oil-resistant agent, 4.15 parts of rosin and 5.4 parts of inorganic nano ceramic heat insulation coating, wherein the stabilizer is lignin fiber, the new asphalt is road petroleum asphalt and is numbered as No. 90, the softening point is not less than 45 ℃, the needle penetration at 25 ℃ is 80-100 (0.1mm), and the corrosion resistant agent is glass flake anticorrosive daub, and the method specifically comprises the following steps:
step one, crushing and screening waste materials of a surface layer of a milled asphalt pavement to obtain RAP materials of three specifications meeting quality requirements, wherein the specifications are as follows: 0-5mmRAP material, 5-10mmRAP material, 10-20mmRAP material;
step two, heating the mixing equipment I to 120-135 ℃, and adding 18 parts of the RAP material with the diameter of 5-10mm, 12 parts of the RAP material with the diameter of 10-20mm, 0.12 part of a regenerant, 2.4 parts of a fiber reinforcing agent, 2.7 parts of a stabilizer and 2.8 parts of new asphalt in the mixing equipment I according to the proportion, and fully stirring for 10-12min to obtain a mixture I for later use;
step three, heating the mixing device II to 170-175 ℃, adding 28 parts of the 0-5mm RAP material, 0.16 part of a regenerant, 2.2 parts of a fiber reinforcing agent, 1.6 parts of a stabilizer and 6.8 parts of rubber powder in the step one into the mixing device II according to a proportion, fully stirring for 8-10min, and preserving heat for 15min to ensure that the RAP material and the matrix asphalt fully melt and swell and react to obtain a mixture II for later use;
placing the mixture I and the mixture II in a vibrating machine, and adding 17.6 parts of corrosion resistant agent and 4.15 parts of rosin; starting a vibrating and stirring device, heating to 160-170 ℃, and vibrating and stirring for 6-8 min; when the temperature is reduced to 110 ℃, adding 3.9 parts of waterproof and oil-resistant agent, and vibrating and stirring for 3-5min to obtain a mixture III for later use;
placing the mixture III in a prefabricated drainage ditch machine, performing static pressure for 25-30s, and preserving for 20-30 min;
and step six, spraying 5.4 parts of inorganic nano ceramic thermal insulation coating on the product cured in the step five to obtain the prefabricated drainage ditch.
4. The method for preparing the prefabricated drainage ditch by using the milled material of the asphalt pavement surface layer for regeneration as claimed in any one of claims 1, 2 or 3, wherein the regenerant is RA-5, a product of petrochemical company Limited, ancient cooking in North Hubei.
5. The method for recycling and manufacturing the prefabricated drainage ditch by using the milling material of the asphalt pavement surface layer according to any one of claims 1, 2 or 3, wherein the fiber reinforcing agent is polyacrylonitrile fiber reinforcing agent.
6. The method for preparing the prefabricated drainage ditch by using the milled material of the asphalt pavement surface layer for regeneration according to any one of claims 1, 2 or 3, wherein the waterproof and oil-resistant agent is a silicone resin waterproof and oil-resistant agent.
7. The method for preparing the prefabricated drainage ditch by using the milled material of the bituminous pavement surface course to regenerate according to any one of claims 1, 2 or 3, wherein the inorganic nano ceramic thermal insulation coating is JRC-B02 product of Zhi Ti science and technology company, and consists of inorganic adhesive, nano zirconia VK-R30 and hollow microspheres.
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