CN112795204A - High-permeability asphalt regenerant and preparation method thereof - Google Patents
High-permeability asphalt regenerant and preparation method thereof Download PDFInfo
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- CN112795204A CN112795204A CN202011626823.7A CN202011626823A CN112795204A CN 112795204 A CN112795204 A CN 112795204A CN 202011626823 A CN202011626823 A CN 202011626823A CN 112795204 A CN112795204 A CN 112795204A
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- asphalt
- agent
- permeability
- regenerant
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- 239000010426 asphalt Substances 0.000 title claims abstract description 87
- 239000012492 regenerant Substances 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 55
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 16
- 239000002199 base oil Substances 0.000 claims abstract description 12
- 230000000149 penetrating effect Effects 0.000 claims abstract description 12
- 239000004014 plasticizer Substances 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims description 22
- 238000004064 recycling Methods 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 230000032683 aging Effects 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 238000010008 shearing Methods 0.000 claims description 8
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 239000003921 oil Substances 0.000 claims description 4
- SHKUUQIDMUMQQK-UHFFFAOYSA-N 2-[4-(oxiran-2-ylmethoxy)butoxymethyl]oxirane Chemical group C1OC1COCCCCOCC1CO1 SHKUUQIDMUMQQK-UHFFFAOYSA-N 0.000 claims description 3
- BWDBEAQIHAEVLV-UHFFFAOYSA-N 6-methylheptan-1-ol Chemical group CC(C)CCCCCO BWDBEAQIHAEVLV-UHFFFAOYSA-N 0.000 claims description 3
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical group CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 claims description 3
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 claims description 3
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical group CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims description 3
- 235000010354 butylated hydroxytoluene Nutrition 0.000 claims description 3
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 3
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 239000003112 inhibitor Substances 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 12
- 230000008929 regeneration Effects 0.000 abstract description 2
- 238000011069 regeneration method Methods 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 description 12
- 230000035515 penetration Effects 0.000 description 5
- 230000001172 regenerating effect Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000003716 rejuvenation Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000002563 ionic surfactant Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000001935 peptisation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000009419 refurbishment Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
-
- 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
Abstract
The invention discloses a high-permeability asphalt regenerant and a preparation method thereof, wherein the high-permeability asphalt regenerant comprises, by mass, 76.64% of light base oil, 0.93% of a penetrating agent, 5.61% of a structure repairing agent, 11.21% of a plasticizer and 5.61% of an anti-aging agent, and the regenerant realizes effective regeneration of waste asphalt, has good pavement performance and is simple in preparation method.
Description
Technical Field
The invention belongs to the field of regeneration and recycling of road engineering materials, and relates to a high-permeability asphalt regenerant and a preparation method thereof.
Background
Under the comprehensive action of traffic load, environment and natural factors, the asphalt pavement can generate diseases such as ruts, cracks, water damage, loosening, oil bleeding and the like, and gradually aggravate along with the increase of service time until losing the use function. Asphalt pavements typically require extensive repair or refurbishment before they are useful. According to the actual use condition of the asphalt pavement, the asphalt pavement needs to be renovated once in about 10 years, namely, the waste asphalt pavement is planed and then a new asphalt pavement is paved again. According to statistics, the waste asphalt mixture produced in China each year exceeds 200 ten thousand tons, and 10 more than ten thousand tons of asphalt are contained in the waste asphalt mixture. It is presumed that the old asphalt mixture is increased year by year as the road mileage is increased year by year. If the waste asphalt mixture cannot be timely and effectively recycled and utilized, not only solid waste pollution is caused, but also resource waste and atmospheric pollution are caused. Therefore, the recycling of the waste asphalt mixture is an effective way to save non-renewable resources such as asphalt and the like, promote sustainable development and solve environmental pollution.
The hot plant recycling of waste asphalt mixture generally includes preheating waste asphalt mixture, adding into asphalt mixing plant, adding regenerant, new asphalt and new aggregate, and mixing. In general, the actual mixing time is only 50 to 70 seconds. Because the mixing time is short, the regenerant is difficult to rapidly permeate into the aged asphalt, so that the regenerated asphalt cannot effectively play a role, and the performance and the structure of the aged asphalt are poor in recovery; the waste asphalt can not be effectively regenerated, and the pavement performance of the regenerated asphalt mixture is poor. The regenerant should have good permeability to effectively improve the properties of the aged asphalt.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a high-permeability asphalt regenerant and a preparation method thereof.
In order to achieve the purpose, the high-permeability regenerating agent comprises, by mass, 76.64% of light base oil, 0.93% of a penetrating agent, 5.61% of a structure repairing agent, 11.21% of a plasticizer and 5.61% of an anti-aging agent.
The light base oil is furfural extract oil.
The penetrating agent is isooctanol polyoxyethylene ether.
The structure repairing agent is 1, 4-butanediol diglycidyl ether.
The plasticizer is dioctyl phthalate.
The anti-aging agent is 2, 6-di-tert-butyl-p-cresol.
The preparation method of the high-permeability asphalt regenerant comprises the following steps:
mixing the light base oil, the plasticizer and the anti-aging agent, shearing and stirring uniformly at 130-150 ℃, naturally cooling to room temperature, adding the structure repairing agent and the penetrating agent, and keeping the temperature and stirring uniformly to obtain the high-permeability asphalt recycling agent.
The stirring speed in the shearing and stirring process is 500-800 r/min.
The temperature in the heat preservation and stirring process is 100 ℃, and the stirring speed is 300-500 r/min.
The invention has the following beneficial effects:
when the high-permeability asphalt regenerant and the preparation method thereof are specifically operated, the penetrant is added into the high-permeability asphalt regenerant, belongs to ionic surfactants, is yellowish viscous liquid in appearance, has a cloud point of a 1% aqueous solution of more than or equal to 40 ℃ and a pH value of 5.0-7.0, is acidic, has excellent wetting and permeability properties, and enables effective components of the regenerant to quickly permeate into aged asphalt to play a role. The structure repairing agent not only supplements the light components missing from the aged asphalt, but also can repair the structure of the aged asphalt and optimize the structure system of the regenerated asphalt; the anti-aging agent improves the anti-aging performance of the regenerated asphalt while repairing and regenerating the aged asphalt, so that the pavement performance durability of the regenerated pavement is improved. Finally, the components in the invention can play a role in mutual promotion, and the penetrating agent can accelerate the interaction rate of the components and the waste asphalt mixture; the base oil and the structure repairing agent are used for respectively carrying out physical repairing and chemical structure repairing on the aged asphalt; the anti-aging agent can improve the anti-aging performance of each component and the regenerated asphalt.
Detailed Description
The present invention is described in further detail below with reference to examples:
the high-permeability regenerating agent comprises, by mass, 76.64% of light base oil, 0.93% of a penetrating agent, 5.61% of a structure repairing agent, 11.21% of a plasticizer and 5.61% of an anti-aging agent.
The light base oil is furfural extract oil.
The penetrating agent is isooctanol polyoxyethylene ether.
The structure repairing agent is 1, 4-butanediol diglycidyl ether.
The plasticizer is dioctyl phthalate.
The anti-aging agent is 2, 6-di-tert-butyl-p-cresol.
The preparation method of the high-permeability asphalt regenerant comprises the following steps:
mixing the light base oil, the plasticizer and the anti-aging agent, shearing and stirring uniformly at 130-150 ℃, naturally cooling to room temperature, adding the structure repairing agent and the penetrating agent, and keeping the temperature and stirring uniformly to obtain the high-permeability asphalt recycling agent.
The stirring speed in the shearing and stirring process is 500-800 r/min.
The temperature in the heat preservation and stirring process is 100 ℃, and the stirring speed is 300-500 r/min.
Example one
The specific operation process of this embodiment is as follows:
(1) preparation of high-permeability asphalt regenerant
Firstly, mixing light base oil, a plasticizer and an anti-aging agent, and stirring for 1h at 150 ℃ by using a high-speed shearing machine, wherein the stirring speed of the high-speed shearing machine is 800 r/min; naturally cooling the mixed solution to room temperature; keeping the temperature at 100 ℃, adding the structure repairing agent and the penetrating agent into the mixed solution, and then continuing stirring for 1h at the speed of 300-500 r/min; and cooling to room temperature to obtain the high-permeability asphalt regenerant.
Wherein, the technical requirements of each raw material in the preparation process of the high-permeability asphalt recycling agent are shown in table 1.
TABLE 1
The high-permeability asphalt regenerant of the present invention was subjected to a performance verification test. The asphalt used is SK70# road petroleum asphalt.
(2) Effect of asphalt recycling agent
The aging test of SK70# road petroleum asphalt is carried out, and the aging asphalt is prepared by referring to a pressure aging container accelerated asphalt aging test (PAV) method described in T0630-2011 of road engineering asphalt and asphalt mixture test regulation (JTG E20-2011) of Ministry of transportation. The effect of the rejuvenating agent was evaluated by measuring the penetration, softening point, ductility and Brookfield viscosity of each asphalt sample before and after rejuvenation, and the results are shown in Table 2.
TABLE 2
As can be seen from Table 2, with the increase of the addition amount of the high-permeability asphalt recycling agent, the penetration degree of the aged asphalt is remarkably increased, and the softening point and the viscosity are continuously reduced, which shows that the light component in the asphalt recycling agent reduces the asphaltene in the aged asphalt, increases the peptization capacity of the aged asphalt, and softens the aged asphalt with higher hardness. Ductility is a reaction of low-temperature properties of asphalt, and the higher ductility the better low-temperature flexibility and ductility of asphalt, the stronger low-temperature cracking resistance. When the addition amount of the asphalt recycling agent is in the range of 7-10%, the indexes of the needle penetration degree, the softening point, the ductility and the viscosity of the recycled asphalt are relatively close to those of the base asphalt.
In the using process of the regenerant, the old asphalt mixture is directly put into an asphalt mixture stirring cylinder, the operating temperature is about 160 ℃, and the regenerant is required to have low volatility and good ageing resistance in order to ensure the safety of construction operation. The regenerated asphalt is prepared according to the blending proportion of 7 percent. The aging resistance of the recycled asphalt was evaluated by measuring the penetration, softening point, ductility, mass loss, viscosity and other indicators of the recycled asphalt after aging in a rotary film oven at 163 ℃ for 85min, and the results are shown in table 3, comparing with the specifications.
TABLE 3
As shown in Table 3, the anti-aging performance of the prepared recycled asphalt can meet the specification requirement at a blending ratio of 7%. The penetration ratio, the quality loss and the residual ductility of the regenerated asphalt added with the high-permeability regenerant are all in the median values, but all meet the specification requirements. Therefore, the recycled asphalt has good anti-aging performance. Can meet the requirement of regenerating the waste asphalt pavement.
Although the invention has been described in detail in this specification by way of general description and specific embodiments, it is apparent that modifications and improvements can be made thereto based on the invention. As will be apparent to those skilled in the art. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (9)
1. The high-permeability regenerant is characterized by comprising, by mass, 76.64% of light base oil, 0.93% of a penetrating agent, 5.61% of a structure repairing agent, 11.21% of a plasticizer and 5.61% of an anti-aging agent.
2. The high-permeability asphalt recycling agent according to claim 1, wherein the light base oil is furfural extract oil.
3. The highly permeable asphalt recycling agent according to claim 1, wherein the penetrating agent is isooctanol polyoxyethylene ether.
4. The highly permeable asphalt recycling agent according to claim 1, wherein the structure-repairing agent is 1, 4-butanediol diglycidyl ether.
5. The highly permeable asphalt recycling agent according to claim 1, wherein the plasticizer is dioctyl phthalate.
6. The highly permeable asphalt recycling agent according to claim 1, wherein the aging inhibitor is 2, 6-di-tert-butyl-p-cresol.
7. The preparation method of the high-permeability asphalt regenerant is characterized by comprising the following steps of:
mixing the light base oil, the plasticizer and the anti-aging agent, shearing and stirring uniformly at 130-150 ℃, naturally cooling to room temperature, adding the structure repairing agent and the penetrating agent, and keeping the temperature and stirring uniformly to obtain the high-permeability asphalt recycling agent.
8. The preparation method of the high-permeability asphalt recycling agent according to claim 7, wherein the stirring speed in the shearing and stirring process is 500-800 r/min.
9. The preparation method of the high-permeability asphalt recycling agent according to claim 7, wherein the temperature in the heat-preservation stirring process is 100 ℃, and the stirring speed is 300-500 r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011626823.7A CN112795204A (en) | 2020-12-30 | 2020-12-30 | High-permeability asphalt regenerant and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011626823.7A CN112795204A (en) | 2020-12-30 | 2020-12-30 | High-permeability asphalt regenerant and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112795204A true CN112795204A (en) | 2021-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011626823.7A Pending CN112795204A (en) | 2020-12-30 | 2020-12-30 | High-permeability asphalt regenerant and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114381134A (en) * | 2022-02-23 | 2022-04-22 | 重庆交通大学 | Aged asphalt repairing agent and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104231640A (en) * | 2013-08-27 | 2014-12-24 | 武汉理工大学 | SBS (styrene-butadiene-styrene) modified asphalt regenerant and preparation method thereof |
| CN109337390A (en) * | 2018-09-12 | 2019-02-15 | 平顶山市公路交通勘察设计院 | A kind of discarded plant oil base warm-mixed asphalt regenerative agent 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 |
| CN112029300A (en) * | 2020-08-10 | 2020-12-04 | 湖南云中再生科技股份有限公司 | Low-dosage asphalt regenerant and preparation and application methods thereof |
-
2020
- 2020-12-30 CN CN202011626823.7A patent/CN112795204A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104231640A (en) * | 2013-08-27 | 2014-12-24 | 武汉理工大学 | SBS (styrene-butadiene-styrene) modified asphalt regenerant and preparation method thereof |
| CN109337390A (en) * | 2018-09-12 | 2019-02-15 | 平顶山市公路交通勘察设计院 | A kind of discarded plant oil base warm-mixed asphalt regenerative agent 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 |
| CN112029300A (en) * | 2020-08-10 | 2020-12-04 | 湖南云中再生科技股份有限公司 | Low-dosage asphalt regenerant and preparation and application methods thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114381134A (en) * | 2022-02-23 | 2022-04-22 | 重庆交通大学 | Aged asphalt repairing agent and preparation method thereof |
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Application publication date: 20210514 |
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