CN111233374A - Asphalt mastic macadam mixture using recycled fan blade waste as filler - Google Patents
Asphalt mastic macadam mixture using recycled fan blade waste as filler 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
- 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
- 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
- C04B18/0481—Other specific industrial waste materials not provided for elsewhere in C04B18/00
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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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Abstract
The invention relates to a mixture of mastic asphalt and macadam using recycled fan blade waste as filler, which comprises the following components in parts by weight: 6-9 parts of SBS modified asphalt, 8-12 parts of total parts of lignin fiber and fan fibrous waste, 100-150 parts of crushed stone, 4-6 parts of fan powder waste and 1-5 parts of fan massive waste; in the mixture, the particle size of the fan powder waste is less than 0.075 mm; the particle size of the fan fiber waste material is not less than 0.075mm and less than 9.5mm, and the length-width ratio of the fan fiber waste material is more than 10; the particle size of the fan block waste is more than or equal to 9.5 mm; aggregate except asphalt in the mixture of the asphalt mastic macadam meets the grading requirement of the national mixture of the asphalt mastic macadam, and the SBS modified asphalt adopts No. 90 matrix asphalt. By utilizing the size synergistic effect of fan fiber waste materials of various sizes, the fan blade waste materials, the lignin fibers and the gravel aggregate form a better interlocking framework structure and compact filling in the asphalt mastic gravel mixture, and the crack resistance and the rutting resistance of the material are improved.
Description
Technical Field
The invention relates to the field of material science and engineering, in particular to a mastic asphalt macadam mixture prepared by utilizing recycled fan blade waste and a preparation method thereof.
Background
Wind energy is a clean renewable high-efficiency energy source. Currently, wind power generation technology is used on a large scale worldwide. And as far as 2018, the total amount 539GW of the global wind power installations. The service life of the fan blade is about 15 years, the loading amount of wind power is continuously improved, and a large number of fan blades can be retired due to the fact that the service life is prolonged, the fan blade is damaged and the like. In China, 5700 tons of fan blades which are retired in 2018 are retired, 5900 tons of fan blades are retired in 2022, and a large number of retired fan blades not only bring pollution to the environment, but also cause waste of resources. The main components of the existing retired fan blade are glass fiber reinforced polymer composite materials, wood, polyurethane and the like. However, the resin adopted is a cross-linked thermosetting resin, so that the resin cannot be melted and recast, and the solid waste materials after the fan blades are crushed are different in size and complex in composition, so that the recycling difficulty is high. The traditional treatment method is to bury or burn the fan blades, but both the two treatment methods cause a great deal of pollution to the environment, so that a technology capable of recycling the fan blades on a large scale for treatment is urgently needed.
The mixture of asphalt and mastic macadam is a novel asphalt mixture structure, has good high-temperature rutting resistance, low temperature sensitivity and strong low-temperature crack resistance, and is widely used for highway pavements. Because the asphalt mastic broken stone mixture is used for road engineering and has huge demand on mineral powder, broken stone, mineral fiber and other fillers, the recycled fan blade is broken and used as the filler in the pavement material, so that the cost of the asphalt mastic broken stone mixture can be reduced, the environment cannot be polluted, the waste materials can be recycled on a large scale, and the asphalt mastic broken stone mixture has good economic, environmental and social benefits.
Disclosure of Invention
The invention aims to provide a mixture of asphalt mastic and crushed stone, which can be prepared by using recycled fan blade waste as a filler, aiming at the problem of environmental pollution caused by the treatment of waste fan blades by landfill and incineration in the prior art.
The technical scheme of the invention is as follows:
the asphalt mastic gravel mixture with the recycled fan blade waste as the filler comprises the following components in parts by weight: 6-9 parts of SBS modified asphalt, 8-12 parts of total parts of lignin fiber and fan fibrous waste, 100-150 parts of crushed stone, 4-6 parts of fan powder waste and 1-5 parts of fan massive waste;
in the mixture, the particle size of the fan powder waste is less than 0.075 mm; the particle size of the fan fiber waste material is not less than 0.075mm and less than 9.5mm, and the length-width ratio of the fan fiber waste material is more than 10; the particle size of the blower block waste is more than or equal to 9.5 mm.
Aggregate except asphalt in the mixture of the asphalt mastic and the crushed stone meets the grading requirement of the national mixture of the asphalt mastic and the crushed stone,
the SBS modified asphalt adopts No. 90 matrix asphalt.
In the mixture, the aggregate adopts SMA-16 skeleton void structure gradation,
the grading table is as follows:
| mesh size (mm) | 19 | 16 | 13.2 | 9.5 | 4.75 | 2.36 | 1.18 | 0.6 | 0.3 | 0.15 | 0.075 |
| Passage Rate (%) | 100 | 96 | 79 | 58 | 28.5 | 22.5 | 19.5 | 15.5 | 11.5 | 10.5 | 9 |
The total amount of the recycled fan blade waste accounts for 0.12-0.15% of the total mass of all materials; the oilstone ratio of the SBS modified asphalt to all materials is 5.00-8.00%.
The mixture comprises the following components: 0.7kg of SBS modified asphalt, 0.8kg of total mass of lignin fiber and fibrous waste, 10kg of crushed stone, 0.4kg of fan powder waste and 0.2kg of fan massive waste; the total amount of the waste materials of the recycled fan blades accounts for 0.14 percent of the total mass of all the materials.
The replacement rate of the fan fibrous waste is 60%.
The preparation method of the asphalt mastic macadam mixture comprises the following steps:
step 1: screening the fan blade waste by a screen shaker, and dividing the fan blade waste into fan powder waste (the grain diameter is less than 0.075mm), fan fiber waste (the grain diameter is less than or equal to 0.075mm and less than 9.5mm, and the length: width is greater than 10) and fan block waste (the grain diameter is greater than or equal to 9.5mm) according to different grain diameters; placing the screened waste materials with different particle sizes, the crushed stones with different particle sizes and the SBS modified asphalt in different containers, heating the waste materials, the crushed stones and the SBS modified asphalt in different containers to 160-180 ℃ in an oven, and preserving heat for more than 4 hours for later use;
step 2: preheating a stirring pot to the stirring temperature of 180-220 ℃, adding crushed stone with various particle sizes into the stirring pot according to the aggregate proportion, stirring for 90-100s at the stirring temperature of 180-220 ℃ and the stirring speed of 90-100r/min, and then mixing the lignin fiber and the fan fibrous waste material according to the proportion of 1: 9-9: 1, adding the mixture into a stirring pot, wherein the stirring temperature is 180-220 ℃, the stirring speed is 90-100r/min, and the stirring time is 3-8 min; the blower powder waste is processed according to the following steps of 2: 8-5: the mass ratio of 5 is divided into two parts, one part is stirred with aggregate, the other part is firstly added into SBS modified asphalt for pre-stirring, the stirring temperature is 180-220 ℃, the stirring speed is 120-130 r/min, and the stirring time is 5-10 min;
and step 3: pouring the SBS modified asphalt subjected to pre-stirring into a stirring pot, stirring at the temperature of 180-220 ℃, at the stirring speed of 90-100r/min for 4-6 min, and uniformly stirring to obtain the recycled fan blade waste-SBS modified asphalt mastic macadam mixture.
And in the step 2, adding a small part of the powder waste of the fan into the modified asphalt for pre-stirring.
The low-temperature bending strain of the mixture of the asphalt mastic macadam is more than or equal to 2500 mu epsilon, the ratio of the freeze-thaw splitting strength is more than 80 percent, and the dynamic stability is more than 4200 times/mm.
The invention has the following advantages:
(1) the invention provides a mixture of asphalt mastic and crushed stone, which uses recycled fan blade waste as filler, screens the fan blade waste with different sizes and complex components, and classifies and replaces different components in the mixture of asphalt mastic, realizes the full recycling of the fan blade waste, maximally utilizes solid waste materials, effectively solves the problems of low recycling rate and difficult treatment of retired fan blades, compared with the prior incineration heat energy method which has the maximum treatment capacity of the recycled fan blade waste, the treatment capacity of the invention can be 30-50% higher, realizes the effective utilization of the fan blade waste, replaces the aggregate crushed stone and mineral fibers with huge use capacity in the mixture of asphalt mastic and crushed stone, can reduce the cost of asphalt pavement materials, can reduce the cost of crushed stone parts of the asphalt mixture to 0, and reduces the material cost by 10-20%, has good application prospect.
(2) The size synergistic effect of fan fiber waste materials with various sizes is utilized, so that the fan blade waste materials, the lignin fibers and the broken stone aggregate form a better interlocking framework structure and compact filling in the asphalt mastic broken stone mixture, the crack resistance and the rutting resistance of the material are improved, and the example shows that the crack resistance and the rutting resistance of the asphalt mastic broken stone mixture prepared according to the invention are 1.1-1.3 times higher than those of the common asphalt mastic broken stone mixture, so that the application not only can greatly use a large amount of recovered fan blades in the asphalt mastic broken stone mixture, but also can obviously improve the comprehensive performance and reduce the cost.
(3) According to the method, the powder waste is divided into two parts, one part is mixed with the asphalt, the powder waste is also fine fibers of the powder waste, and after the powder waste is uniformly mixed in the asphalt cement, the powder waste has a bridging effect on microcracks of the asphalt mastic macadam mixture in a low-temperature environment, and the low-temperature crack resistance of the asphalt mastic macadam mixture is improved to be 1.2-1.3 times that of a common asphalt mastic macadam mixture.
(4) The preparation method of the mixture comprises the steps of recycling all types of waste materials according to a specific formula, screening and classifying the fan blade waste materials, separately heating, and replacing the stones with corresponding particle sizes in the original crushed stone materials, so that the aim of fully utilizing the recycled fan blade waste materials is fulfilled, and the mixture with excellent performance is obtained.
Detailed Description
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
The invention relates to a mixture of mastic asphalt and macadam by using recycled fan blade waste as a filler, which comprises the following components in parts by weight: 6-9 parts of SBS modified asphalt, 8-12 parts of total parts of lignin fibers and fibrous waste, 100-150 parts of crushed stone, 4-6 parts of powder waste and 1-5 parts of blocky waste.
The fan powder waste replaces crushed stone with the particle size less than or equal to 0.075 mm; selecting fan fiber waste to replace lignin fiber serving as a stabilizer from fiber waste with the particle size larger than 0.075mm and the particle size smaller than or equal to 9.5 mm; the blower lump waste is used to replace crushed stone with grain size over 9.5 mm.
Aggregate except asphalt in the asphalt mastic macadam mixture meets the grading requirement of the national asphalt mastic macadam mixture (refer to JTGD50-2017 highway asphalt pavement design specifications).
In consideration of the conditions of large carrying capacity of vehicles, large throughput and relatively cold climate in northern China, the SMA-16 framework gap structure is preferably adopted for grading.
The gradation of the aggregates in the bituminous horseshoe butter mixture is as follows:
| mesh size (mm) | 19 | 16 | 13.2 | 9.5 | 4.75 | 2.36 | 1.18 | 0.6 | 0.3 | 0.15 | 0.075 |
| Passage Rate (%) | 100 | 96 | 79 | 58 | 28.5 | 22.5 | 19.5 | 15.5 | 11.5 | 10.5 | 9 |
The preparation process of the SBS modified asphalt comprises the following steps: heating the asphalt to 120-150 ℃, adding an SBS modifier, stirring, continuously heating to 180-200 ℃ to obtain SBS modified asphalt, and adopting No. 90 asphalt, wherein the addition amount of the SBS modifier is 5-9% of the mass of the asphalt.
The application selects the fan waste materials with different particle sizes to classify and replace aggregates in the mixture of the mastic asphalt and the macadam: the fan powder waste replaces crushed stone with the particle size less than or equal to 0.075 mm; selecting fan fiber waste to replace lignin fiber serving as a stabilizer from fiber waste with the particle size larger than 0.075mm and the particle size smaller than or equal to 9.5 mm; the waste material of the blower block is used to replace crushed stone with grain size over 9.5 mm.
The total amount of the recycled fan blade waste accounts for 0.12-0.15% of the total mass of all materials.
The oilstone ratio of the SBS modified asphalt to all materials is 5.00-8.00%.
The application also discloses a preparation method of the mixture, which comprises the following steps:
step 1: screening the fan blade waste by a screen shaker, and dividing the fan blade waste into fan powder waste (the grain diameter is less than 0.075mm), fan fiber waste (the grain diameter is less than or equal to 0.075mm and less than 9.5mm, and the length: width is greater than 10) and fan block waste (the grain diameter is greater than or equal to 9.5mm) according to different grain diameters; placing the screened waste materials with different particle sizes, the crushed stones with different particle sizes and the SBS modified asphalt in different containers, heating the waste materials, the crushed stones and the SBS modified asphalt in different containers to 160-180 ℃ in an oven, and preserving heat for more than 4 hours for later use;
step 2: preheating a stirring pot to a stirring temperature of 180-220 ℃, adding crushed stone with various particle sizes into the stirring pot according to the aggregate proportion, stirring for 90s, wherein the stirring temperature is 180-220 ℃, the stirring speed is 100r/min, and then mixing the lignin fiber and the fan fibrous waste material according to the proportion of 1: 9-9: 1, stirring at 180-220 ℃, at a stirring speed of 100r/min for 3-8 min. In order to ensure the adhesiveness of the fan powder waste among aggregates, the fan powder waste is prepared by the following steps of: 8-5: and 5, stirring one part of the mixture and the aggregate together, adding the other part of the mixture into SBS modified asphalt for pre-stirring, wherein the stirring temperature is 180-220 ℃, the stirring speed is 120r/min, and the stirring time is 5-10 min.
And step 3: pouring the pre-mixed SBS modified asphalt into a stirring pot, stirring at 180-220 ℃, at a stirring speed of 100r/min for 4-6 min, and uniformly stirring to obtain the recycled fan blade waste-SBS modified asphalt mastic macadam mixture.
Example 1
In this embodiment, the mixture of mastic asphalt and crushed stone using the waste material of the recycled fan blade as the filler comprises the following components in parts by weight: 0.7kg of SBS modified asphalt, 0.8kg of total mass of lignin fiber and fibrous waste, 10kg of crushed stone, 0.4kg of fan powder waste and 0.2kg of fan massive waste;
the fan powder waste replaces crushed stone with the particle size less than or equal to 0.075 mm; selecting fan fiber waste to replace lignin fiber serving as a stabilizer from fiber waste with the particle size larger than 0.075mm and the particle size smaller than or equal to 9.5 mm; the blower lump waste is used to replace crushed stone with grain size over 9.5 mm.
The total amount of the waste materials of the recycled fan blades accounts for 0.14 percent of the total mass of all the materials.
The asphalt mastic macadam mixture adopts the SMA-16 framework gap structure grading,
the gradation of the mixture of bitumen and horseshoe butter is as follows:
| mesh size (mm) | 19 | 16 | 13.2 | 9.5 | 4.75 | 2.36 | 1.18 | 0.6 | 0.3 | 0.15 | 0.075 |
| Passage Rate (%) | 100 | 96 | 79 | 58 | 28.5 | 22.5 | 19.5 | 15.5 | 11.5 | 10.5 | 9 |
The SBS modified asphalt used in the embodiment adopts No. 90 base asphalt, the asphalt is heated, when the temperature is heated to 150 ℃, the SBS modifier is added for stirring, then the temperature is continuously heated to 200 ℃, and the SBS modified asphalt is obtained, wherein the type of the asphalt adopts No. 90 asphalt, and the addition amount of the SBS modifier is 6.00% of the mass of the asphalt.
The mixture of the mastic asphalt and the crushed stone is prepared according to the following steps
Step 1: screening the recovered fan blade waste, and dividing the recovered fan blade waste into fan powder waste (the particle size is less than 0.075mm), fan fiber waste (the particle size is less than or equal to 0.075mm and less than 9.5mm, and the length: width is greater than 10) and fan block waste (the particle size is greater than or equal to 9.5mm) according to different particle sizes; respectively putting the screened waste, aggregate and SBS modified asphalt in different containers, heating to 180 ℃ in an oven, and preserving heat for 4 hours for later use;
step 2: uniformly stirring the fan block waste, the crushed stone, part of fan powder waste, the fiber waste and the lignin fiber in parts by weight, wherein the mass ratio of the lignin fiber to the glass fiber reinforced plastic fan fiber waste is 9:1, adding part of the fan powder waste accounting for 15% of the crushed stone with the particle size of less than 0.075mm, stirring the test piece for 5min at the stirring temperature of 200 ℃, and fully mixing to obtain aggregate; and adding the residual fan powder waste into SBS modified asphalt for pre-mixing, wherein the stirring temperature is 200 ℃, the stirring time is 5min, and the stirring speed is 120 r/min. The mass ratio of the powder waste in the aggregate to the powder waste premixed in the asphalt is 1: 1;
and step 3: pouring the SBS modified asphalt after being premixed into a stirring pot, stirring at 220 ℃, stirring for 5min at the stirring speed of 100r/min, and uniformly stirring to obtain the SBS asphalt mastic gravel mixture prepared by recycling the fan blade waste.
Example 2
The raw material selection and preparation method of the mixture in this embodiment is the same as that in embodiment 1, except that the mass ratio of the added lignin fiber to the fan fiber waste is 1: 9.
example 3
The raw material selection and preparation method of the mixture in this embodiment is the same as that in embodiment 1, except that the mass ratio of the added lignin fiber to the fan fiber waste is 3: 2.
comparative example 1
The raw material selection and preparation method of the comparative example mixture is the same as that of example 1, except that the mass ratio of the added lignin fiber to the fan fiber waste is 9.5: 0.5.
comparative example 2
The raw material selection and preparation method of the comparative example mixture is the same as that in example 1, except that the mass ratio of the added lignin fiber to the fan fiber waste is 0.5: 9.5.
comparative example 3
The raw material selection and preparation method of the mixture of the comparative example have the same other steps as the example 1, except that only the fiber waste is added and no powder waste is added.
Table 1: performance test results of asphalt mastic macadam mixtures (different mass ratios of lignin fibers to fan fiber waste materials)
As can be seen from table 1, by comparing the rutting performance, the water stability and the low temperature crack resistance of the SBS asphalt mastic macadam mixture with different amounts of fiber waste, the mass ratio of the lignin fiber to the fibrous waste is 9.5: when the temperature is 0.5 ℃, the freeze-thaw splitting strength ratio of the mixture of the asphalt mastic macadam can not meet the standard requirement (the standard requirement is more than or equal to 80%), the mass ratio of the lignin fiber to the fibrous waste is 0.5: at 9.5, the low-temperature bending strain of the mixture of the asphalt mastic macadam cannot meet the specification requirement (the specification requirement is more than or equal to 2500 mu epsilon), so the mass ratio of the lignin fibers to the glass fiber reinforced plastic fiber waste material is 1: 9-9: 1, and the optimal fibrous waste material mixing amount is that the mass ratio of the lignin fibers to the fan fiber waste material added in the embodiment 4 is 3: 2, and (b) mixing. When the powdery waste is not added, the freeze-thaw splitting strength ratio and the low-temperature bending strain do not meet the standard requirements, which indicates that the fibrous waste and the powdery waste must be combined and added into the mixture to ensure the mechanical property of the mixture.
Example 4
The raw material selection and preparation method of the mixture in this embodiment are the same as those in embodiment 1, except that in order to change the doping mode of the powder waste, the performance of the mixture of recycled fan blade waste, namely the asphalt mastic macadam is optimized, and the powder waste is respectively mixed according to the ratio of 2: 8, adding 20 percent of powder waste into asphalt for premixing, mixing 80 percent of powder waste with other aggregates, and replacing the fibrous waste by 60 percent.
Example 5
The raw material selection and preparation method of the mixture in this example are the same as those in example 1, except that the powder waste is respectively processed according to the following steps of 3: 7, adding 30 percent of powder waste into asphalt for premixing, mixing 70 percent of powder waste with other aggregates, and ensuring that the fibrous waste has a substitution rate of 60 percent.
Example 6
The raw material selection and preparation method of the mixture in this example are the same as those in example 1, except that the powder waste is respectively processed according to the following steps of 4: the proportion of 6 is divided into two parts, 40 percent of powder waste is firstly added into asphalt for premixing, 60 percent of powder waste is mixed with other aggregates, and the substitution rate of fibrous waste is 60 percent.
Table 2: performance test results of asphalt mastic macadam mixture (pre-mixed with powder waste materials of different proportions)
As can be seen from table 2, the comprehensive properties of the mixture dynamic stability, the freeze-thaw split strength ratio and the low-temperature bending strain prepared in the above examples 1 to 6 can all meet the specification requirements, and through the rutting property, the water stability and the low-temperature crack resistance of the mixture of asphalt mastic macadam of examples 4 to 6, the optimal doping mode of adding the powder waste is that in example 6, the ratio of 4: and 6, pre-mixing the mixture with SBS modified asphalt and then stirring the mixture with aggregate, wherein the obtained mixture of the mastic asphalt and the macadam has the best mechanical property.
Comparative example 4
The raw material selection and preparation method of the comparative example mixture are the same as those of example 1, except that the matrix asphalt used is 70# asphalt, and the performance test data is shown in the following table.
As shown in comparative example 4, the freeze-thaw split strength ratio and the low-temperature bending strain both of which are not in compliance with the specification when the No. 70 base asphalt is used, indicating that the No. 90 base asphalt must be used.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
The invention is not the best known technology.
Claims (8)
1. The asphalt mastic gravel mixture with the recycled fan blade waste as the filler comprises the following components in parts by weight: 6-9 parts of SBS modified asphalt, 8-12 parts of total parts of lignin fiber and fan fibrous waste, 100-150 parts of crushed stone, 4-6 parts of fan powder waste and 1-5 parts of fan massive waste;
in the mixture, the particle size of the fan powder waste is less than 0.075 mm; the particle size of the fan fiber waste material is not less than 0.075mm and less than 9.5mm, and the length-width ratio of the fan fiber waste material is more than 10; the particle size of the fan block waste is more than or equal to 9.5 mm;
aggregate except asphalt in the mixture of the asphalt mastic and the crushed stone meets the grading requirement of the national mixture of the asphalt mastic and the crushed stone,
the SBS modified asphalt adopts No. 90 matrix asphalt.
2. The compound according to claim 1, wherein the aggregate is graded with SMA-16 skeleton void structure,
the grading table is as follows:
3. The mixture according to claim 1, wherein the total amount of the recycled fan blade waste accounts for 0.12-0.15% of the total mass of all materials; the oilstone ratio of the SBS modified asphalt to all materials is 5.00-8.00%.
4. The mix of claim 1, wherein the mix comprises: 0.7kg of SBS modified asphalt, 0.8kg of total mass of lignin fiber and fibrous waste, 10kg of crushed stone, 0.4kg of fan powder waste and 0.2kg of fan massive waste; the total amount of the waste materials of the recycled fan blades accounts for 0.14 percent of the total mass of all the materials.
5. The mix of claim 1, wherein the fan fibrous waste has a replacement rate of 60%.
6. A method of preparing an asphalt mastic macadam mix according to any one of claims 1 to 5, the method including the steps of:
step 1: screening the fan blade waste by a screen shaker, and dividing the fan blade waste into fan powder waste (the grain diameter is less than 0.075mm), fan fiber waste (the grain diameter is less than or equal to 0.075mm and less than 9.5mm, and the length: width is greater than 10) and fan block waste (the grain diameter is greater than or equal to 9.5mm) according to different grain diameters; placing the screened waste materials with different particle sizes, the crushed stones with different particle sizes and the SBS modified asphalt in different containers, heating the waste materials, the crushed stones and the SBS modified asphalt in different containers to 160-180 ℃ in an oven, and preserving heat for more than 4 hours for later use;
step 2: preheating a stirring pot to the stirring temperature of 180-220 ℃, adding crushed stone with various particle sizes into the stirring pot according to the aggregate proportion, stirring for 90-100s at the stirring temperature of 180-220 ℃ and the stirring speed of 90-100r/min, and then mixing the lignin fiber and the fan fibrous waste material according to the proportion of 1: 9-9: 1, adding the mixture into a stirring pot, wherein the stirring temperature is 180-220 ℃, the stirring speed is 90-100r/min, and the stirring time is 3-8 min; the blower powder waste is processed according to the following steps of 2: 8-5: the mass ratio of 5 is divided into two parts, one part is stirred with aggregate, the other part is firstly added into SBS modified asphalt for pre-stirring, the stirring temperature is 180-220 ℃, the stirring speed is 120-130 r/min, and the stirring time is 5-10 min;
and step 3: pouring the SBS modified asphalt subjected to pre-stirring into a stirring pot, stirring at the temperature of 180-220 ℃, at the stirring speed of 90-100r/min for 4-6 min, and uniformly stirring to obtain the recycled fan blade waste-SBS modified asphalt mastic macadam mixture.
7. The method according to claim 6, wherein a smaller portion of the blower powder waste is added to the modified asphalt in step 2 for preliminary stirring.
8. The preparation method of claim 6, wherein the low-temperature bending strain of the mixture of the asphalt mastic macadam is more than or equal to 2500 mu epsilon, the ratio of the freeze-thaw split strength is more than 80%, and the dynamic stability is more than 4200 times/mm.
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| CN202010067277.1A Active CN111233374B (en) | 2020-01-20 | 2020-01-20 | Asphalt mastic macadam mixture using recycled fan blade waste as filler |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113102461A (en) * | 2021-04-14 | 2021-07-13 | 保定市万苏电力设备制造有限公司 | Method for treating waste wind power blades |
| CN114380539A (en) * | 2022-02-13 | 2022-04-22 | 河北工业大学 | Asphalt cold-patch material prepared from recycled glass fiber reinforced plastics |
| CN114956630A (en) * | 2022-06-27 | 2022-08-30 | 盈创新材料(苏州)有限公司 | Formula and preparation method of coarse aggregate of waste blades for buildings |
| CN115090647A (en) * | 2022-05-10 | 2022-09-23 | 北京华能长江环保科技研究院有限公司 | Fan blade disposal and utilization system and disposal and utilization method |
| CN115353748A (en) * | 2022-09-26 | 2022-11-18 | 湖南科技大学 | Waste fan blade composite fiber and preparation method of modified asphalt mixed with SBS (styrene butadiene styrene) |
| CN117125925A (en) * | 2023-08-28 | 2023-11-28 | 国能联合动力技术(保定)有限公司 | Double-effect application method of waste wind power blade as asphalt road building material |
| CN117126460A (en) * | 2023-08-28 | 2023-11-28 | 国能联合动力技术(保定)有限公司 | Preparation method and application of waste wind power blade asphalt modifier based on rubber coating |
| CN117126461A (en) * | 2023-08-28 | 2023-11-28 | 国能联合动力技术(保定)有限公司 | Dynamic crosslinking-based water loss resistant asphalt modifier and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113102461A (en) * | 2021-04-14 | 2021-07-13 | 保定市万苏电力设备制造有限公司 | Method for treating waste wind power blades |
| CN114380539A (en) * | 2022-02-13 | 2022-04-22 | 河北工业大学 | Asphalt cold-patch material prepared from recycled glass fiber reinforced plastics |
| CN115090647A (en) * | 2022-05-10 | 2022-09-23 | 北京华能长江环保科技研究院有限公司 | Fan blade disposal and utilization system and disposal and utilization method |
| CN114956630A (en) * | 2022-06-27 | 2022-08-30 | 盈创新材料(苏州)有限公司 | Formula and preparation method of coarse aggregate of waste blades for buildings |
| CN115353748A (en) * | 2022-09-26 | 2022-11-18 | 湖南科技大学 | Waste fan blade composite fiber and preparation method of modified asphalt mixed with SBS (styrene butadiene styrene) |
| CN115353748B (en) * | 2022-09-26 | 2023-12-26 | 湖南科技大学 | Waste fan blade composite fiber and preparation method of waste fan blade composite fiber and SBS composite modified asphalt |
| CN117125925A (en) * | 2023-08-28 | 2023-11-28 | 国能联合动力技术(保定)有限公司 | Double-effect application method of waste wind power blade as asphalt road building material |
| CN117126460A (en) * | 2023-08-28 | 2023-11-28 | 国能联合动力技术(保定)有限公司 | Preparation method and application of waste wind power blade asphalt modifier based on rubber coating |
| CN117126461A (en) * | 2023-08-28 | 2023-11-28 | 国能联合动力技术(保定)有限公司 | Dynamic crosslinking-based water loss resistant asphalt modifier and preparation method and application thereof |
| CN117125925B (en) * | 2023-08-28 | 2024-06-28 | 国能联合动力技术(保定)有限公司 | Double-effect application method of waste wind power blade as asphalt road building material |
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