CN109082132B - Aged asphalt compound regenerant based on recovered grease and preparation method and application thereof - Google Patents
Aged asphalt compound regenerant based on recovered grease and preparation method and application thereof Download PDFInfo
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- CN109082132B CN109082132B CN201810730291.8A CN201810730291A CN109082132B CN 109082132 B CN109082132 B CN 109082132B CN 201810730291 A CN201810730291 A CN 201810730291A CN 109082132 B CN109082132 B CN 109082132B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses an aged asphalt compound regenerant based on recovered grease, which consists of the following components: waste engine oil, waste edible oil, desulfurized rubber powder, epoxy resin and nano TiO2. The preparation method comprises the following steps: mixing waste engine oil and waste edible oil, adding desulfurized rubber powder and nano TiO2Then shearing is carried out; and cooling the temperature of the sheared mixed solution to room temperature, adding epoxy resin, and stirring to obtain the epoxy resin modified epoxy resin. The compound regenerant of the invention uses the waste engine oil and the waste edible oil as main raw materials, thereby achieving the purpose of recycling the wastes for many times, reducing the environmental pollution caused by secondary treatment of the wastes and reducing the cost generated by treatment of the waste oil. The desulfurized rubber powder is adopted to replace the common rubber powder, so that the desulfurized rubber powder is more fully swelled and dissolved in the asphalt and simultaneously undergoes physical and chemical changes, and the basic performance of the aged asphalt is improved. Nano TiO 22The powder is used as an ultraviolet absorption anti-aging agent, and can effectively enhance the ultraviolet light aging resistance of the regenerated asphalt.
Description
Technical Field
The invention relates to an aged asphalt compound regenerant, in particular to an aged asphalt compound regenerant based on recovered grease, and also relates to a preparation method and application of the aged asphalt compound regenerant.
Background
By 2017, the total road mileage of the whole country is 477.35 kilometers, wherein the total road mileage of second and above roads is 62.22 kilometers, and the asphalt pavement accounts for the most part. At present, the proportion of highway maintenance mileage in China is up to 98%, and the highway maintenance mileage required each year is very large. A large amount of waste asphalt mixture is generated in the maintenance process, the waste treatment causes environmental pollution, the waste of the waste asphalt further deepens the current situation that China lacks high-quality asphalt, and stone required by the maintenance engineering is obtained by mining mines, so that the water and soil conservation and the environment are seriously influenced. Under the guidance of the guideline, the recycling of the old asphalt mixture enters a freeway, and the regenerant has an important influence on the efficient recycling of the old asphalt mixture. How to form the regenerant after being developed by using wastes or low-cost materials and further reuse the regenerant in maintenance and repair of asphalt pavements is a very significant research direction.
At present, along with the improvement of the living standard of people in China, more and more grease oil is wasted, at present, the amount of the waste grease oil in China reaches thousands of tons every year, only a small part of the waste grease oil is recovered, and the rest of the waste grease oil is directly combusted or discarded, so that the environment is polluted, the normal life of people is threatened, and particularly, the reutilization of the swill-cooked dirty oil brings great influence to the health of people. The method has the advantages that the method greatly adopts different types to recover the oil, reduces the pollution to the environment and residents, is beneficial to the popularization and the application of the waste oil in the modified asphalt industry, also considers the problem of the recycling of the recovered oil in the road field, achieves the aim of recycling the waste for many times, and reduces the cost caused by the treatment of the oil.
The prior method has low utilization rate of the waste engine oil and the waste edible oil, one of the waste engine oil and the waste edible oil is adopted mostly, the characteristic of compatibility of the waste engine oil and the waste edible oil is not fully utilized, other additives are chemical products mostly, the cost is higher, and other wastes are not considered to be utilized.
Disclosure of Invention
The invention aims to provide an aged asphalt compound regenerant based on recovered grease, which adopts a large amount of waste engine oil and waste edible oil, is low in cost and improves the effective utilization rate of waste.
The invention also aims to provide a preparation method of the aged asphalt compound regenerant based on the recovered grease.
The third purpose of the invention is to provide the application of the aged asphalt compound regenerant based on the recovered grease.
In order to solve the technical problem, the invention discloses an aged asphalt regenerant based on recovered grease, which comprises the following components in percentage by mass: 23-28% of waste engine oil, 39-45% of waste edible oil, 20-23% of desulfurized rubber powder, 7-8% of epoxy resin and nano TiO22-5%, and the sum of the mass percentages is 100%.
Furthermore, the epoxy resin is E51 epoxy resin, the epoxy value is 184-195 g/mol, and the viscosity is 10000-16000 mPa.s.
The invention also discloses a preparation method of the aged asphalt compound regenerant based on the recovered grease, which is implemented according to the following steps:
step 1, weighing 23-28% of waste engine oil, 39-45% of waste edible oil, 20-23% of desulfurized rubber powder, 7-8% of epoxy resin and nano TiO according to mass percentage22-5%, wherein the sum of the mass percentages is 100%;
step 2, mixing the waste engine oil and the waste edible oil, and then adding the desulfurized rubber powder and the nano TiO2Then shearing is carried out;
and 3, cooling the temperature of the mixed solution sheared in the step 2 to room temperature, adding epoxy resin, and stirring to obtain the aged asphalt regenerant.
Further, before the used oil and the waste edible oil are weighed in the step 1, the used oil and the waste edible oil are respectively stirred uniformly, and then impurities are filtered out through a sieve pore of 0.075 mm.
Further, in the step 2, the waste engine oil and the waste edible oil are mixed and heated to 140-160 ℃, and then the desulfurized rubber powder and the nano TiO are added2。
Furthermore, the shearing in the step 2 is to shear for 1-2 hours at a rate of 5000-5500 r/min by using a shearing machine.
Further, the stirring time in the step 3 is 15-25 min.
The third technical scheme disclosed by the invention is as follows: the application of the aged asphalt compound regenerant based on the recovered grease is that the curing agent is added into the prepared compound regenerant, and the mixture is stirred uniformly and then added into the aged asphalt to realize the regeneration of the aged asphalt.
Further, the mass ratio of the curing agent to the epoxy resin in the regenerant is 1: 1.5 to 3.
Furthermore, the addition amount of the regenerant is 3-4% of that of the aged asphalt.
Compared with the prior art, the invention has the beneficial effects that:
the invention relates to an aged asphalt compound regenerant based on recovered grease, which is an environment-friendly compound asphalt regenerant, and takes waste engine oil and waste edible oil as main raw materials, thereby achieving the purpose of recycling wastes for many times, reducing the environmental pollution caused by secondary treatment of the wastes, and reducing the cost generated by treatment of the waste oil.
The invention adopts the desulfurized rubber powder to replace the common rubber powder, so that the desulfurized rubber powder is more fully swelled and dissolved in the asphalt and simultaneously undergoes physical and chemical changes, thereby improving the basic performance of the aged asphalt.
The invention adopts nano TiO2The powder is used as an ultraviolet absorption anti-aging agent, and can effectively enhance the ultraviolet light aging resistance of the regenerated asphalt.
When in use, the curing agent is added into the compound regenerant, and under the heating condition, the epoxy resin and the asphalt form a compact space network system under the action of the curing agent, and the compound regenerant has the characteristics of high strength, good toughness, good water resistance, excellent temperature resistance, good fatigue resistance and the like.
The compound regenerant can partially replace common domestic and foreign products in projects at the present stage, effectively reduce the road maintenance cost, ensure the quality of the regenerated asphalt pavement, protect the environment, provide referential experience for future popularization, and have wide popularization and application prospects.
Drawings
FIG. 1 is a comparison graph of infrared spectra of used oil and used soybean oil;
FIG. 2 is an infrared spectrum of a used oil and a used soybean oil reclaimed asphalt;
FIG. 3 is a microscopic structure diagram of a desulfurized rubber powder modified asphalt;
FIG. 4 is a microscopic structure diagram of a general crumb rubber modified asphalt.
Detailed Description
The following embodiments are described in detail with reference to the accompanying drawings, so that how to implement the technical features of the present invention to solve the technical problems and achieve the technical effects can be fully understood and implemented.
The invention discloses an aged asphalt compound regenerant based on recovered grease, which comprises the following components in percentage by mass: 23-28% of waste engine oil, 39-45% of waste edible oil, 20-23% of desulfurized rubber powder, 7-8% of epoxy resin and nano TiO22-5%, and the sum of the mass percentages of the components is 100%.
Waste engine oil: and maintaining the replaced engine oil conventionally.
Waste edible oil: the edible oil after frying, wherein the edible oil refers to soybean oil, rapeseed oil, corn oil, olive oil and peanut oil, or edible blend oil and the like.
The epoxy resin is E51 epoxy resin, the epoxy value is 184-195 g/mol, and the viscosity is 10000-16000 mPa.s.
Nano TiO 22: 25nm, anatase, hydrophilic oleophilic type.
The preparation method of the aged asphalt compound regenerant based on the recovered grease is implemented according to the following steps:
step 1, respectively stirring the waste engine oil and the waste edible oil uniformly, and then filtering impurities through a sieve pore of 0.075 mm;
step 2, weighing 23-28% of waste engine oil, 39-45% of waste edible oil, 20-23% of desulfurized rubber powder, 7-8% of epoxy resin and nano TiO according to mass percentage22-5%, wherein the sum of the mass percentages is 100%;
step 3, mixing the waste engine oil and the waste edible oil, heating to 140-160 ℃, and adding the desulfurized rubber powder and the nano TiO2Shearing for 1-2 h at a speed of 5000-5500 r/min by using a shearing machine;
and 4, cooling the temperature of the mixed solution sheared in the step 2 to room temperature, adding epoxy resin, and stirring for 15-20 min to obtain the aged asphalt regenerant.
The aged asphalt regenerant based on the recovered grease provided by the invention takes the waste engine oil and the waste edible oil as main raw materials, so that the purpose of recycling the waste for many times is achieved, the environmental pollution caused by secondary treatment of the waste is reduced, and the cost caused by treatment of the waste oil is reduced.
The existing asphalt regenerant based on the recovered oil mostly adopts one of waste engine oil and waste edible oil, and the characteristic of compatibility of the waste engine oil and the waste edible oil is not considered, so that the respective advantages of the waste engine oil and the waste edible oil cannot be fully exerted during the regeneration of the aged asphalt. The composition test and the Fourier infrared spectroscopy (FTIR) test of the used recovered oil are respectively carried out, and the results are shown in figure 1, figure 2 and tables 1-3. The asphalt and the engine oil are both crude oil, the viscosity of the engine oil is lower than that of the asphalt, the waste edible oil contains a large amount of unsaturated fatty acid, the unsaturated fatty acid is similar to oil in the asphalt, and the asphalt and the engine oil have good compatibility and can be well compatible with the asphalt in view of various technical indexes of the waste engine oil and the waste edible oil according to a homologous theory and a similar compatibility theory.
TABLE 1 test results of various technical indexes of used oil and used soybean oil
TABLE 2 used oil chemistry
TABLE 3 chemical Properties of waste Soybean oil
The invention adopts the desulfurized rubber powder to replace the common rubber powder, so that the desulfurized rubber powder can be more fully swelled in the asphalt and simultaneously generate physical and chemical changes, and the basic performance of the aged asphalt is improved.
The desulfurized rubber powder is more fully swelled in the asphalt because part of cross-linking bonds in the rubber are broken, and simultaneously, the surface of the desulfurized rubber powder has active groups, which is beneficial to the combination with the chemical bonds of the asphalt, so that the dispersibility of the desulfurized rubber powder in the asphalt is improved.
The microstructure of the desulfurized rubber powder and the common rubber powder modified common asphalt is observed by a Scanning Electron Microscope (SEM), and the result is shown in figures 3 and 4. As can be seen from the comparison of the microstructure of the modified asphalt before and after the rubber powder is desulfurized, the non-desulfurized rubber powder is still dispersed in the asphalt in the form of particles about 1mm, and the particle size of the non-desulfurized rubber powder is increased compared with that of the original rubber powder. For the desulfurized rubber powder modified asphalt, the network structure is destroyed after the rubber powder is desulfurized, and the desulfurized rubber powder modified asphalt can be dispersed in the asphalt under the stirring and mixing conditions, so that the rubber powder particles are greatly reduced and can reach micron-sized, and a part of carbon black particles are dissociated, so that the image is deepened.
The dispersion form of the desulfurized rubber powder and the ordinary rubber powder in the asphalt is shown in fig. 3 and 4. In the common rubber powder modified asphalt without desulfurization (namely the rubber asphalt which is commonly used at present), because rubber powder particles absorb light components to expand, the particles are lapped, the previous solid connection is maintained, and the rubber asphalt has better high-temperature resistance in summer high-temperature seasons. However, the common rubber powder modified asphalt can not be stored for a long time in the using process, and must be mixed for use at the moment, and the segregation phenomenon can occur after the long-time storage, so that the whole rubber asphalt is discarded, and the waste is generated; in addition, although the high-temperature performance of the rubber asphalt is improved, the brittleness is increased in low-temperature seasons in winter, and low-temperature cracking is easy to occur.
In the desulfurized rubber powder modified asphalt, desulfurized rubber powder particles are dispersed in the asphalt as fine particles, and the high-temperature bearing capacity of the desulfurized rubber powder modified asphalt is slightly lower than that of common rubber powder due to the damage of an elastic cross-linking network of the rubber powder, but the desulfurized rubber powder modified asphalt has excellent high-temperature performance and better low-temperature performance and thermal storage stability than that of the common rubber powder modified asphalt. Therefore, the asphalt is modified, the desulfurized rubber powder is better selected, and excellent high-temperature performance, low-temperature performance and storage stability can be simultaneously obtained.
The invention adopts nano TiO2The powder is used as an ultraviolet absorption anti-aging agent, and can effectively enhance the ultraviolet light aging resistance of the asphalt.
The aging of asphalt is often classified into thermal aging caused by high temperature and photo aging caused by irradiation of sunlight (mainly ultraviolet rays contained therein). For high altitude areas, the air is thin, the solar radiation is strong, and the service life of the asphalt pavement is seriously influenced by ultraviolet aging. Therefore, the selection of the proper ultraviolet ray anti-aging agent has positive significance for prolonging the service life of the asphalt pavement. According to the nano TiO shown in Table 42The influence results on the asphalt before and after ultraviolet aging are known, and the nano TiO2Can absorb, shield and scatter a certain amount of ultraviolet rays, and inhibit the increase of asphaltene content and the reduction of light oil content in the ultraviolet aging asphalt, thereby improving the ultraviolet resistance of the asphalt and further prolonging the re-aging time of the regenerated asphalt caused by illumination.
TABLE 4 Nano TiO2Influence on asphalt before and after ultraviolet aging
Based on the advantages and easy integration of the components, the invention adopts a large amount of waste engine oil, waste edible oil and desulfurized rubber powder, meets the social requirements of energy conservation and emission reduction at present, has simple preparation process and low cost, improves the effective utilization rate of wastes, can be widely applied to the maintenance of roads, and has obvious economic benefit and social benefit.
When the regenerant is used, the existing research results and the characteristics of the curing agent for curing the epoxy resin are referred, and in order to ensure that the regenerant does not have a curing phenomenon before use after the curing agent is added, the curing agent is added according to the mass ratio of the epoxy resin to the curing agent of 2:1 (the curing agent: 593, the appearance is transparent viscous liquid, and the viscosity is 100-150 pa.s). By adding 3% and 4% of the rejuvenating agent according to the invention and the existing HRA-2 type rejuvenating agent, respectively, to the aged 11h bitumen (in the case of Clarityl 70# base bitumen). From the experimental results (table 5), it can be concluded that the regenerant of the present invention significantly improves the basic physical property index of aged asphalt. When the mixing amount of the regenerant is 3%, the penetration and softening point values at 25 ℃ are close to the original asphalt values, and the specification requirements are met. Compared with the HRA-2 type regenerant, the regenerant has the effect of improving the softening point of aged asphalt closer to the level of the original asphalt.
TABLE 5 results comparing the regeneration effect of the regenerant of the present invention with that of the HRA-2 type regenerant
Example 1
Step 1, respectively stirring the waste engine oil and the waste edible oil uniformly, and then filtering impurities through a sieve pore of 0.075 mm;
step 2, weighing 230g (23%) of waste engine oil, 450g (45%) of waste edible oil, 230g (23%) of desulfurized rubber powder and,E51 epoxy resin 70g (7%) and nano TiO220g(2％)；
Step 3, mixing the waste engine oil and the waste edible oil, heating to 145 ℃, and adding the desulfurized rubber powder and the nano TiO2Shearing for 1h at the speed of 5000r/min by using a shearing machine;
and 4, cooling the temperature of the mixed solution sheared in the step 2 to room temperature, adding epoxy resin, and stirring for 15min to obtain the aged asphalt regenerant.
35g of 593 curing agent is added into the regenerant prepared in example 1, and then the regenerant is added into the aged asphalt, wherein the addition amount of the regenerant is 3% of that of the aged asphalt, so that the aged asphalt is regenerated.
Example 2
Step 1, respectively stirring the waste engine oil and the waste edible oil uniformly, and then filtering impurities through a sieve pore of 0.075 mm;
step 2, weighing 240g (24%) of waste engine oil, 440g (44%) of waste edible oil, 200g (20%) of desulfurized rubber powder, 80g (8%) of E51 epoxy resin and nano TiO according to mass percentage240g(4％)；
Step 3, mixing the waste engine oil and the waste edible oil, heating to 140 ℃, and adding the desulfurized rubber powder and the nano TiO2Shearing for 2h at a rate of 5500r/min by using a shearing machine;
and 4, cooling the temperature of the mixed solution sheared in the step 2 to room temperature, adding epoxy resin, and stirring for 18min to obtain the aged asphalt regenerant.
40g of 593 curing agent is added into the regenerant prepared in example 1, and then the regenerant is added into the aged asphalt, wherein the addition amount of the regenerant is 4% of that of the aged asphalt, so that the aged asphalt is regenerated.
Example 3
Step 1, respectively stirring the waste engine oil and the waste edible oil uniformly, and then filtering impurities through a sieve pore of 0.075 mm;
step 2, weighing 260g (26%) of waste engine oil, 400g (40%) of waste edible oil, 210g (21%) of desulfurized rubber powder, 80g (8%) of E51 epoxy resin and nano TiO according to mass percentage250g(5％)；
Step 3, mixing the waste engine oil and the waste foodMixing with oil, heating to 150 deg.C, adding desulfurized rubber powder and nano TiO2Shearing for 1.5h at a rate of 5500r/min by using a shearing machine;
and 4, cooling the temperature of the mixed solution sheared in the step 2 to room temperature, adding epoxy resin, and stirring for 20min to obtain the aged asphalt regenerant.
53.3g of 593 curing agent is added into the regenerant prepared in example 1, and then the regenerant is added into the aged asphalt, wherein the addition amount of the regenerant is 3% of that of the aged asphalt, so that the aged asphalt is regenerated.
Example 4
Step 1, respectively stirring the waste engine oil and the waste edible oil uniformly, and then filtering impurities through a sieve pore of 0.075 mm;
step 2, respectively weighing 280g (28%) of waste engine oil, 390g (39%) of waste edible oil, 220g (22%) of desulfurized rubber powder, 70g (7%) of E51 epoxy resin and nano TiO according to mass percentage240g(4％)；
Step 3, mixing the waste engine oil and the waste edible oil, heating to 160 ℃, and adding the desulfurized rubber powder and the nano TiO2Shearing for 1h at the speed of 5000r/min by using a shearing machine;
and 4, cooling the temperature of the mixed solution sheared in the step 2 to room temperature, adding epoxy resin, and stirring for 15min to obtain the aged asphalt regenerant.
23.3g of 593 curing agent is added into the regenerant prepared in example 4, and then the regenerant is added into the aged asphalt, wherein the addition amount of the regenerant is 4% of that of the aged asphalt, so that the aged asphalt is regenerated.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. The aging asphalt compound regenerant based on the recovered grease is characterized by comprising the following components in percentage by massThe composition is as follows: 23-28% of waste engine oil, 39-45% of waste edible oil, 20-23% of desulfurized rubber powder, 7-8% of epoxy resin and nano TiO22-5%, wherein the sum of the mass percentages of the components is 100%;
the preparation method of the aged asphalt compound regenerant based on the recovered grease is implemented according to the following steps:
step 1, weighing 23-28% of waste engine oil, 39-45% of waste edible oil, 20-23% of desulfurized rubber powder, 7-8% of epoxy resin and nano TiO according to mass percentage22-5%, wherein the sum of the mass percentages of the components is 100%;
step 2, mixing the waste engine oil and the waste edible oil, and then adding the desulfurized rubber powder and the nano TiO2Then shearing is carried out;
step 3, cooling the temperature of the mixed solution sheared in the step 2 to room temperature, adding epoxy resin, and stirring to obtain an aged asphalt regenerant;
adding a curing agent into the compound regenerant prepared according to the method, uniformly stirring, and then adding into aged asphalt to realize the regeneration of the aged asphalt, wherein the mass ratio of the curing agent to the epoxy resin in the compound regenerant is 1: 1.5 to 3.
2. The reclaimed oil-based aged asphalt compound regenerant as claimed in claim 1, wherein the epoxy resin is E51 epoxy resin, the epoxy value is 184-195 g/mol, and the viscosity is 10000-16000 mPa.s。
3. The reclaimed oil-based aged asphalt compound regenerant as claimed in claim 2, wherein in step 1, before the used oil and the waste edible oil are weighed, the used oil and the waste edible oil are respectively stirred uniformly, and then pass through a sieve pore of 0.075mm, and impurities are filtered out.
4. The reclaimed oil-based aged asphalt compound regenerant as claimed in claim 2, wherein in the step 2, the waste engine oil and the waste edible oil are mixed and heated to 140-160 ℃, and then the desulfurized rubber powder and the nano TiO are added2。
5. The reclaimed oil-based aged asphalt compound regenerant according to claim 1, wherein the shearing in the step 2 is carried out at a shearing speed of 5000-5500 r/min for 1-2 h by using a shearing machine.
6. The reclaimed oil-based aged asphalt compound regenerant according to claim 1, wherein the stirring time in the step 3 is 15-25 min.
7. The recycled grease-based aged asphalt compound regenerant as claimed in claim 1, wherein the addition amount of the compound regenerant is 3-4% of that of the aged asphalt.
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| CN109627797A (en) * | 2018-12-28 | 2019-04-16 | 中南林业科技大学 | Useless edible soybean oil and the composite regenerated pitch of graphene oxide and preparation method thereof |
| CN109943084A (en) * | 2019-03-12 | 2019-06-28 | 武汉理工大学 | A kind of response type hot asphalt regenerative agent and preparation method |
| CN110330800B (en) * | 2019-07-18 | 2021-09-24 | 湖南鑫长胜材料科技有限公司 | Asphalt regenerant and preparation method thereof |
| CN110294943A (en) * | 2019-07-18 | 2019-10-01 | 山东大学 | A kind of unmade way bitumen regenerant and its preparation method and application |
| CN112646380A (en) * | 2020-12-23 | 2021-04-13 | 江苏宝利路面材料技术有限公司 | SBS asphalt regenerant and preparation method thereof |
| CN114381134B (en) * | 2022-02-23 | 2023-04-18 | 重庆交通大学 | Aged asphalt repairing agent and preparation method thereof |
| CN115029008A (en) * | 2022-05-30 | 2022-09-09 | 北京工业大学 | Preparation and use methods of high-performance asphalt regenerant |
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| CN101255245A (en) * | 2008-04-10 | 2008-09-03 | 华东理工大学 | Road bitumen regenerative agent |
| CN101633743A (en) * | 2009-09-01 | 2010-01-27 | 北京化工大学 | Road waste asphalt regenerant and preparation method |
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