CN110342849B - Method for preparing prefabricated drainage groove by utilizing asphalt pavement surface layer milling material for regeneration - Google Patents
Method for preparing prefabricated drainage groove by utilizing asphalt pavement surface layer milling material for regeneration Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/34—Feeding the material to the mould or the compression means
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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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/36—Bituminous materials, e.g. tar, pitch
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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
- E01C11/00—Details of pavings
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
- E01C11/224—Surface drainage of streets
- E01C11/227—Gutters; Channels ; Roof drainage discharge ducts set in sidewalks
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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
- E03F5/0401—Gullies for use in roads or pavements
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
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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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Abstract
The invention belongs to the technical field of road engineering materials, and particularly relates to a method for preparing a prefabricated drainage groove by utilizing a milling material regeneration of an asphalt pavement surface layer. The technical scheme is as follows: the paint is prepared from the following components in parts by weight: 20 to 40 parts of RAP material (0 to 5mm), 25 to 30 parts of RAP material (5 to 10mm), 15 to 25 parts of RAP material (10 to 20mm), 0.1 to 0.4 part of regenerant, 3 to 6 parts of fiber reinforcing agent, 3 to 5 parts of stabilizer, 1 to 4 parts of new asphalt, 7 to 10 parts of rubber powder, 18 to 22 parts of corrosion resistant agent, 2.5 to 3 parts of waterproof and oil resistant agent, 4.2 to 6 parts of rosin and 3 to 6 parts of inorganic nano ceramic heat insulation coating. The prefabricated water drainage tank prepared 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 and durability, 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 groove by utilizing a milling material regeneration 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.
Concrete drainage grooves in road pavement drainage facilities are subjected to the effects of washing and erosion of rainwater and road snow melting agents, serious typical diseases such as salt erosion, weathering, exposed bones and fracture appear, and meanwhile, the concrete drainage grooves have the problems of high manufacturing cost, difficulty in maintenance and replacement, resource consumption and the like.
Therefore, the regeneration based on the waste asphalt pavement materials and the forming and development of the prefabricated drainage groove of the regenerated mixture are carried out, the regeneration technology is effectively combined with the construction of auxiliary facilities of pavement engineering, the application problems of high maintenance and replacement difficulty, poor corrosion resistance and durability and the like of the conventional drainage groove are solved, and simultaneously, the development of the regeneration and utilization technology of the waste materials is developed, and the research idea and direction of the regeneration and utilization technology of the waste materials are widened.
Disclosure of Invention
The invention provides a method for preparing a prefabricated water drainage tank by utilizing the regeneration of a milling material of an asphalt pavement surface layer, wherein the prefabricated water drainage tank prepared by special processes of crushing, screening, recombination regeneration, prefabrication, curing 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 later stage; the method not only realizes the regeneration and cyclic utilization of the old materials, changes waste into valuable, saves energy and protects environment, but also obviously reduces the engineering cost of the water drainage tank, solves the application problems of large maintenance and replacement difficulty, poor corrosion resistance and durability, high cost and the like of the conventional cement concrete water drainage tank, and has considerable economic and social benefits.
The technical scheme of the invention is as follows:
a method for preparing a prefabricated drainage groove by utilizing a milling material of a bituminous pavement surface layer to regenerate comprises the following components in parts by weight: 20 to 40 parts of RAP material (0 to 5mm), 25 to 30 parts of RAP material (5 to 10mm), 15 to 25 parts of RAP material (10 to 20mm), 0.1 to 0.4 part of regenerant, 3 to 6 parts of fiber reinforcing agent, 3 to 5 parts of stabilizer, 1 to 4 parts of new asphalt, 7 to 10 parts of rubber powder, 18 to 22 parts of corrosion resistant agent, 2.5 to 3 parts of waterproof and oil resistant agent, 4.2 to 6 parts of rosin and 3 to 6 parts of inorganic nano ceramic heat insulation coating.
The method for preparing the prefabricated water drainage tank by utilizing the asphalt pavement surface milling material regeneration preferably adopts the following scheme that the RAP material is an old pavement material obtained from an asphalt pavement by adopting a milling mode, and is crushed and screened to form three specifications of aggregates, wherein the specifications are respectively as follows: 0-5mm, 5-10mm, 10-20 mm.
The method for preparing the prefabricated drainage groove by utilizing the milling material of the asphalt pavement surface layer for regeneration preferably adopts the scheme that the regenerant is RA-5 which is a product of Hubeiding Shu petrochemical company Limited.
The method for preparing the prefabricated water draining groove by utilizing the milling material of the bituminous pavement surface layer for regeneration preferably adopts the scheme that the fiber reinforcing agent is a polyacrylonitrile fiber reinforcing agent.
The method for preparing the prefabricated drainage groove 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 groove by utilizing the pavement milling material regeneration of the asphalt pavement is characterized in that the new asphalt is road petroleum asphalt with the number of 90, the softening point of more than or equal to 45 ℃ and the penetration degree of 80-100 (0.1mm) at 25 ℃.
The method for preparing the prefabricated water drainage tank by utilizing the asphalt pavement surface milling material for regeneration preferably adopts the scheme that the corrosion resistant agent is glass scale anti-corrosion mortar.
The method for preparing the prefabricated water drainage tank 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 groove 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 groove by utilizing the milling material of the asphalt pavement surface layer in a regeneration way 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 120-130 ℃, and adding 25-30 parts of RAP material (5-10mm), 15-25 parts of RAP material (10-20mm), 0.05-0.2 part of regenerant, 1.5-2.5 parts of fiber reinforcing agent, 1.5-3 parts of stabilizer and 1-4 parts of new asphalt in the step one into 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 155-160 ℃, adding 30-40 parts of RAP material (0-5mm) in the step one, 0.05-0.3 part of regenerant, 1.5-4.5 parts of fiber reinforcing agent, 1.5-4 parts of stabilizer and 7-10 parts of rubber powder into the mixing equipment II according to a proportion, fully stirring for 5-8min, and preserving heat for 12min to ensure that the RAP material and the matrix asphalt fully melt-swell and react to obtain a mixture II for later use;
placing the first mixture and the second mixture into a vibrating machine, and adding 18-22 parts of corrosion resistant agent and 4.2-6 parts of rosin; starting a vibrating and stirring device, heating to 160-170 ℃, and vibrating and stirring for 5-7 min; when the temperature is reduced to 110 ℃, adding 2.5-3 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 water drainage tank machine, performing static pressure for 20-25s, and maintaining for 20-30 min;
and step six, spraying 3-6 parts of inorganic nano ceramic heat insulation coating on the cured product obtained in the step five to obtain the prefabricated water drainage tank.
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 AS polyacrylonitrile fiber reinforcing agent mainly has the following functions: the crack resistance and the integral strength of the prefabricated water drainage tank are improved; improving the impermeability of the concrete: the compactness of the prefabricated water drainage groove 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 water drainage groove, so that the anti-permeability performance of the prefabricated water drainage groove is improved; and thirdly, the toughness of the prefabricated water drainage groove is increased, the polyacrylonitrile fiber has certain elongation and higher tensile strength, and when the prefabricated water drainage groove is pressed or damaged in a stretching mode, the fiber is stretched and deformed to absorb external stress, so that the toughness of the prefabricated water drainage groove is increased. And fourthly, the impact resistance of the prefabricated water drainage groove is improved, the added polyacrylonitrile fiber reinforcing agent can absorb external stress energy to a greater extent, and the absorption capacity of the prefabricated water drainage groove to 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 the prefabricated water drainage tank are improved, and meanwhile, the addition of the lignin fibers can reduce the number of gaps in the prefabricated water drainage tank, namely the water content in the prefabricated water drainage tank is reduced, so that the frost resistance of the prefabricated water drainage tank 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: the binding property of the cementing material in the regenerated mixture is greatly improved, the prefabricated drainage tank is compact and durable, and the high-temperature stability, low-temperature flexibility, ageing resistance, water damage resistance and the like of the prefabricated drainage tank are comprehensively improved.
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 water drainage tank 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 water drainage tank 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 water drainage tank is improved, and the stiffness modulus of asphalt in the regenerated mixture is improved, so that the strength of the prefabricated water drainage tank 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 water drainage tank is carried out to improve the integral stability of the prefabricated water drainage tank in the high-temperature period in summer (improve the high-temperature stability) and the energy storage function of the prefabricated water drainage tank in the low-temperature period in winter (improve the low-temperature anti-cracking performance).
The invention has the beneficial effects that:
1) the asphalt pavement surface layer milling material regeneration prefabricated water drainage tank has the advantages that the raw materials are easy to obtain, the asphalt pavement surface layer milling material regeneration prefabricated water drainage tank is prefabricated through a special preparation process, excellent mechanical and road performance is achieved, and high standards and high requirements for 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 tank and granite drainage tank, the asphalt pavement waste material regeneration prefabricated drainage tank has the advantages of low manufacturing cost (the periodic maintenance cost can be saved by more than 30%), high strength, durability, excellent salt corrosion resistance and weathering resistance, equivalent size and easy installation, construction and later maintenance.
4) The invention 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 cement concrete and granite drainage tank for the highway and the urban road, and greatly improves the road performance and the construction workability of the drainage tank. 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 groove by utilizing a milling material of a bituminous pavement surface layer to regenerate comprises the following components in parts by weight: 20 parts of RAP material (0-5mm), 25 parts of RAP material (5-10mm), 17 parts of RAP material (10-20mm) and a regenerant: 0.37 part of fiber reinforcing agent: 5 parts of a stabilizer: 4 parts of new asphalt: 2 parts of rubber powder, 7.8 parts of corrosion resistant agent: 18 parts of water-proof and oil-resistant agent: 2.5 parts of rosin: 4.6 parts of inorganic nano ceramic heat-insulating coating: 4.5 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
AS 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 120-mesh fine rubber powder of Shandong Zhongping Huayuan rubber company. The corrosion resistant agent is HebeiThe product of Jia jin Xin chemical company is glass flake anticorrosive daub. The waterproof and oil-resistant agent is an organic silicon resin waterproof and oil-resistant agent in the environment chemical industry. The rosin is selected from rosin powder crystal for industrial products of chemical company Jinan Xundali. 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 120-130 ℃, and adding 25 parts of RAP material (5-10mm), 17 parts of RAP material (10-20mm), 0.17 part of regenerant, 2 parts of fiber reinforcing agent, 1.8 parts of stabilizer and 2 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 155-160 ℃, adding 20 parts of RAP material (0-5mm) in the step one, 0.2 part of regenerant, 3 parts of fiber reinforcing agent, 2.2 parts of stabilizer and 7.8 parts of rubber powder into the mixing equipment II according to a proportion, fully stirring for 5-8min, and preserving heat for 12min 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 18 parts of corrosion resistant agent and 4.8 parts of rosin; starting a vibrating and stirring device, heating to 160-170 ℃, and vibrating and stirring for 5-7 min; when the temperature is reduced to 110 ℃, adding 2.5 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 water drainage tank machine, performing static pressure for 20-25s, and maintaining for 20-30 min;
and step six, spraying 4.5 parts of inorganic nano ceramic heat insulation coating on the cured product in the step five to obtain the prefabricated water drainage tank.
Example 2
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): 27 parts of RAP material (10-20 mm): 21 parts of a regenerant: 0.4 part of fiber reinforcing agent: 5.8 parts of stabilizer: 4.7 parts of new asphalt: 2.7 parts of fine rubber powder (120 meshes): 8.4 parts of corrosion resistant agent: 20 parts of water-proof and oil-resistant agent: 2.7 parts of rosin powder crystal: 5.2 parts of inorganic nano ceramic heat-insulating coating: 5.0 parts. The distribution ratio is as follows: in the second step, 0.2 part of regenerant, 2.3 parts of fiber reinforcing agent and 2.1 parts of stabilizer; in the third step, 0.2 part of regenerant, 3.5 parts of fiber reinforcing agent and 2.6 parts of stabilizer.
Example 3
The difference from the embodiment 1 is that the components by weight are as follows: RAP material (0-5 mm): 37 parts of RAP material (5-10 mm): 30 parts of RAP material (10-20 mm): 24 parts of a regenerant: 0.4 part of fiber reinforcing agent: 6 parts of a stabilizer: 5 parts of new asphalt: 3.3 parts of fine rubber powder (120 meshes): 9.1 parts of corrosion resistant agent: 22 parts of water-proof and oil-resistant agent: 2.9 parts of rosin powder crystal: 5.6 parts of inorganic nano ceramic heat-insulating coating: 5.8 parts. The distribution ratio is as follows: in the second step, 0.2 part of regenerant, 2.4 parts of fiber reinforcing agent and 2.3 parts of stabilizer; in the third step, 0.2 part of regenerant, 3.6 parts of fiber reinforcing agent and 2.7 parts of stabilizer.
Examples 1-3 the results of testing the performance of the asphalt pavement surface milling material recycled precast drainage channel are shown in table 1:
TABLE 1
Comparative example
And selecting a cement concrete drainage tank commonly used in road engineering. The results of the performance measurements are shown in table 2:
TABLE 2
As can be seen from tables 1-2, the performance of the asphalt pavement surface milling material regeneration prefabricated drainage groove prepared according to embodiments 1-3 of the invention can meet the technical requirements of technical Specification for asphalt pavement construction for highways (JTG F40) issued by the department of transportation of the people's republic of China, and each performance index is better than the performance of the conventional cement concrete drainage groove. Meanwhile, the asphalt pavement surface milling material regeneration prefabricated water drainage tank is extremely compact, high in strength and durability, strong in oxidation resistance, low-temperature cracking resistance and corrosion (salt corrosion) resistance, the high-temperature and low-temperature performance and durability of the water drainage tank are greatly improved, and the production and use cost is obviously reduced.
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 (4)
1. The method for preparing the prefabricated drainage groove by utilizing the pavement milling and planing material regeneration of the asphalt pavement is characterized by comprising the following components in parts by weight: 28 parts of 0-5mm RAP material, 27 parts of 5-10mm RAP material, 21 parts of 10-20mm RAP material, 0.4 part of regenerant, 5.8 parts of fiber reinforcing agent, 4.7 parts of stabilizer, 2.7 parts of new asphalt, 8.4 parts of rubber powder, 20 parts of corrosion resistant agent, 2.7 parts of waterproof and oil resistant agent, 5.2 parts of rosin and 5.0 parts of inorganic nano ceramic heat insulation coating; the new asphalt is road petroleum asphalt with the number of 90, the softening point of more than or equal to 45 ℃, and the penetration at 25 ℃ of 80-100 (0.1 mm); the stabilizer is lignin fiber; the corrosion-resistant agent is glass flake corrosion-resistant daub, the waterproof oil-resistant agent is organic silicon resin waterproof oil-resistant agent, and the inorganic nano ceramic heat-insulating coating is JRC-B02 which is a product of Zhi Ti science and technology company and consists of inorganic adhesive, nano zirconia VK-R30 and hollow microspheres; the rubber powder adopts 100-mesh 120-mesh fine rubber powder of Shandong Zhonghuayuan rubber company; the RAP material is an old pavement material obtained from an asphalt pavement in a milling mode, and is formed into aggregates with three specifications through crushing and screening, wherein the specifications are as follows: 0-5mm, 5-10mm, 10-20 mm;
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 120-130 ℃, and adding 27 parts of the RAP material with the diameter of 5-10mm, 21 parts of the RAP material with the diameter of 10-20mm, 0.2 part of a regenerant, 2.3 parts of a fiber reinforcing agent, 2.1 parts of a stabilizer and 2.7 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 155-160 ℃, adding 28 parts of the 0-5mm RAP material, 0.2 part of a regenerant, 3.5 parts of a fiber reinforcing agent, 2.6 parts of a stabilizer and 8.4 parts of rubber powder into the mixing equipment II together according to a proportion, fully stirring for 5-8min, and preserving heat for 12min 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 20 parts of corrosion resistant agent and 5.2 parts of rosin; starting a vibrating and stirring device, heating to 160-170 ℃, and vibrating and stirring for 5-7 min; when the temperature is reduced to 110 ℃, adding 2.7 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 water drainage tank machine, performing static pressure for 20-25s, and maintaining for 20-30 min;
and step six, spraying 5.0 parts of inorganic nano ceramic heat insulation coating on the cured product in the step five to obtain the prefabricated water drainage tank.
2. The method for preparing the prefabricated drainage groove by utilizing the pavement milling and planing material regeneration of the asphalt pavement is characterized by comprising the following components in parts by weight: 37 parts of 0-5mm RAP material, 30 parts of 5-10mm RAP material, 24 parts of 10-20mm RAP material, 0.4 part of regenerant, 6 parts of fiber reinforcing agent, 5 parts of stabilizer, 3.3 parts of new asphalt, 9.1 parts of rubber powder, 22 parts of corrosion inhibitor, 2.9 parts of waterproof and oil-resistant agent, 5.6 parts of rosin and 5.8 parts of inorganic nano ceramic heat-insulating coating; the new asphalt is road petroleum asphalt with the number of 90, the softening point of more than or equal to 45 ℃, and the penetration at 25 ℃ of 80-100 (0.1 mm); the stabilizer is lignin fiber; the corrosion-resistant agent is glass flake corrosion-resistant daub, the waterproof oil-resistant agent is organic silicon resin waterproof oil-resistant agent, and the inorganic nano ceramic heat-insulating coating is JRC-B02 which is a product of Zhi Ti science and technology company and consists of inorganic adhesive, nano zirconia VK-R30 and hollow microspheres; the rubber powder adopts 100-mesh 120-mesh fine rubber powder of Shandong Zhonghuayuan rubber company; the RAP material is an old pavement material obtained from an asphalt pavement in a milling mode, and is formed into aggregates with three specifications through crushing and screening, wherein the specifications are as follows: 0-5mm, 5-10mm, 10-20 mm;
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 120-130 ℃, and adding 30 parts of the RAP material with the diameter of 5-10mm, 24 parts of the RAP material with the diameter of 10-20mm, 0.2 part of a regenerant, 2.4 parts of a fiber reinforcing agent, 2.3 parts of a stabilizer and 3.3 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 155-160 ℃, adding 37 parts of the 0-5mm RAP material, 0.2 part of a regenerant, 3.6 parts of a fiber reinforcing agent, 2.7 parts of a stabilizer and 9.1 parts of rubber powder into the mixing equipment II together according to a proportion, fully stirring for 5-8min, and preserving heat for 12min 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 22 parts of corrosion resistant agent and 5.6 parts of rosin; starting a vibrating and stirring device, heating to 160-170 ℃, and vibrating and stirring for 5-7 min; when the temperature is reduced to 110 ℃, adding 2.9 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 water drainage tank machine, performing static pressure for 20-25s, and maintaining for 20-30 min;
and step six, spraying 5.8 parts of inorganic nano ceramic heat insulation coating on the cured product obtained in the step five to obtain the prefabricated water drainage tank.
3. The method for preparing the prefabricated drainage groove by using the milled material of the asphalt pavement surface layer for regeneration as claimed in claim 1, wherein the regenerant is a product RA-5 of Hubeiding petrochemical company Limited.
4. The method for preparing the prefabricated drain tank by using the milled material of the bituminous pavement surface course to regenerate, according to claim 1, wherein the fiber reinforcing agent is polyacrylonitrile fiber reinforcing agent.
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| JP2009052361A (en) * | 2007-08-29 | 2009-03-12 | Green Arm Co Ltd | Method of continuously regenerating asphalt mixture layer of pavement on road and self-traveling vehicle system therefor |
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| CN109722045A (en) * | 2018-12-31 | 2019-05-07 | 山西省交通科学研究院 | A kind of prefabricated assembly structural and its preparation process based on waste asphalt milling material |
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| CN106752139B (en) * | 2016-12-13 | 2019-02-05 | 无锡市明江保温材料有限公司 | A kind of heat power equipment and pipeline nano-thermal-insulating coating and preparation method thereof |
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| JP2009052361A (en) * | 2007-08-29 | 2009-03-12 | Green Arm Co Ltd | Method of continuously regenerating asphalt mixture layer of pavement on road and self-traveling vehicle system therefor |
| CN104926233A (en) * | 2015-06-04 | 2015-09-23 | 招商局重庆交通科研设计院有限公司 | High-RAP-content asphalt mixture formula and preparation method |
| CN106746926A (en) * | 2016-12-13 | 2017-05-31 | 江苏天诺道路材料科技有限公司 | Separate type plantmix warms the preparation method of reclaimed asphalt mixture |
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