CN102174267A - Asphalt cold recycling agent and preparation method thereof - Google Patents
Asphalt cold recycling agent and preparation method thereof Download PDFInfo
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- CN102174267A CN102174267A CN2011100363707A CN201110036370A CN102174267A CN 102174267 A CN102174267 A CN 102174267A CN 2011100363707 A CN2011100363707 A CN 2011100363707A CN 201110036370 A CN201110036370 A CN 201110036370A CN 102174267 A CN102174267 A CN 102174267A
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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 an asphalt cold recycling agent, which is characterized by being prepared from a waste asphalt activator, an anti-aging agent, an ultraviolet absorbent, a reinforcing agent, a reinforcing curing agent and a reinforcing auxiliary agent serving as raw materials, wherein the waste asphalt activator consists of any one or more of engine oil, castor oil, naphthenic oil, aromatic hydrocarbon oil and furfural oil; the anti-aging agent is a mixture of an antioxidant and a p-phenylenediamine anti-aging agent; the ultraviolet absorbent is 2,4-dihydroxymethyl benzophenone; the reinforcing agent is bisphenol A epoxy resin E44 or E51; the reinforcing curing agent is a cashew nut oil modified amine curing agent; and the reinforcing auxiliary agent is a glycidyl ester epoxy active diluent. An asphalt recycled mixture prepared by adding the asphalt cold recycling agent into waste asphalt has high comprehensive performance, namely high bonding strength, high-temperature performance, low-temperature crack resistance and rheological performance, the actual service life of 8 years, and high aging resistance and weather resistance.
Description
Technical field
The present invention relates to a kind of bitumen regenerant and preparation method thereof, be specifically related to a kind of waste asphalt mixture that can make and reach cold asphalt rehabilitation agent as top course asphalt quality standard and preparation method thereof fully.
Background technology
Along with the development of road construction, the maintenance workload of bituminous pavement also will roll up.Traditional method for maintaining generally is the old asphalt pavement of breakage to be excavated discarded, and then overlays new oil mat again.This technology just exists obviously not enough technically, cost height, long in time limit, and suspend traffic for a long time.The old asphalt pavement material is discarded three big problems: stacking needs the place, causes environmental pollution, wastes a large amount of valuable resources.The asphalt pavement regeneration technology more and more is subject to people's attention in recent years, and has become an important directions of bituminous pavement technical study owing to have good economic benefit and environmental protection effect.
Bituminous pavement utilizes regeneration techniques, be needs to be overhauled or the depleted old asphalt pavement, dig recovery, fragmentation, screening through turning over, add regenerator, new pitch again, newly gather materials, again mix and stir, formation has the reclaimed asphalt mixture of certain pavement performance, is used for a whole set of Technology of surfacing surface layer or basic unit.The asphalt-regenerating technology very early abroad industrially developed country obtain research and use.Before the eighties in 20th century, asphalt pavement regeneration mainly adopts concentrates plantmix's reclaiming process.After the eighties, along with the development of mechanical means and in situ test detection technique, on-the-spot in-place regeneration technology begins to be subjected to the attention of many countries, and at present, many developed countries extensively adopt this processing method.The cold in place recycling of bituminous pavement is exactly a kind of new technology that develops rapidly under this background, and has become one of main method of pavement maintenance transformation in the world.
Though cold regeneration techniques can all utilize old brea bed, but basically, this utilization is just simple to be utilized, do not make full use of old bituminous material, quality of asphalt mixtures after the regeneration can not reach as top course bituminous quality standard, can only be used for basic unit, be used for overhauling of backroad more abroad.
Summary of the invention
The object of the present invention is to provide a kind of cold asphalt rehabilitation agent, the reclaimed asphalt mixture that this cold asphalt rehabilitation agent is used for the regenerating waste asphalt gained reaches fully as top course bituminous quality standard.
Another order of the present invention is to provide the preparation method of above-mentioned cold asphalt rehabilitation agent.
The objective of the invention is to be achieved through the following technical solutions, the usage ratio of each material of the present invention relation does not specify all refers to weight percent or weight part ratio:
A kind of cold asphalt rehabilitation agent is characterized in that: described cold regenerator is to be that raw material makes with useless pitch activator, anti-aging agent, UV light absorber, strengthening agent, reinforcement solidifying agent and reinforcement auxiliary agent; Described useless pitch activator is any one or more composition of machine oil, Viscotrol C, naphthenic oil, aromatic hydrocarbon oil, furfural oil, the mixture that described anti-aging agent is made up of oxidation inhibitor and p phenylenediamine type antioxidant, described UV light absorber is 2,4-dihydroxymethyl benzophenone, described strengthening agent is bisphenol A type epoxy resin E44 or E51, described reinforcement solidifying agent is cashew nut oil modified amine curing agent, and described reinforcement auxiliary agent is a glycidyl ester class epoxy active diluent.
In order to improve cohesive strength, rheological, resistance of aging, weathering resistance, high warm nature and the low-temperature cracking-resistance etc. of the reclaimed asphalt mixture that adds the cold asphalt rehabilitation agent, useless pitch activator accounts for 20～50% in the cold asphalt rehabilitation agent of the present invention, anti-aging agent accounts for 0.3～2%, UV light absorber accounts for 0.3～2%, strengthening agent accounts for 15～35%, the reinforcement solidifying agent accounts for 15～35%, and the reinforcement auxiliary agent accounts for 3～20%.
P phenylenediamine type antioxidant is preferably DTPD, 4010NA, 4010 or 4020 in the cold regenerator of the present invention, described oxidation inhibitor such as antioxidant 1010,2264,264 or DBHA etc., described glycidyl ester class epoxy active diluent such as ZY-10 glycidyl ester, glycidyl ether 660,501,692 or thinners such as 748.
In order further to improve the over-all properties of the reclaimed asphalt mixture that is added with bitumen regenerant of the present invention, anti-aging agent of the present invention is preferably p phenylenediamine type antioxidant and oxidation inhibitor mixes by 1: 1～3, more preferably 1: 1.
Above-mentioned anti-aging agent, oxidation inhibitor, reinforcement auxiliary agent, activator, UV light absorber, strengthening agent and reinforcement solidifying agent are the commercially available prod; The preparation of above-mentioned anti-aging agent is formed as long as those skilled in the art have known its raw material, and its preparation method is the routine techniques means.
For the over-all properties that makes reclaimed asphalt mixture more excellent, the anti-aging agent that cold asphalt rehabilitation agent of the present invention preferably is made up of 28% aromatic hydrocarbon oil, 0.75% antioxidant 4010NA and 0.75% antioxidant 1010,1.5% 2,4-dihydroxymethyl benzophenone, 35% polyphenol A type Resins, epoxy E51,30% cashew nut oil modified amine and 4% ZY-10 glycidyl ester be that raw material makes.
Cold asphalt rehabilitation agent preparation method of the present invention, carry out as follows:
1) above-mentioned useless pitch activator is added in the chuck stirred autoclave, add above-mentioned anti-aging agent, UV light absorber, strengthening agent in described ratio while stirring, the no particle that stirs is cold asphalt rehabilitation agent A;
2) above-mentioned reinforcement solidifying agent and above-mentioned reinforcement auxiliary agent are mixed in proportion, stirring obtains cold asphalt rehabilitation agent B.
3) cold asphalt rehabilitation agent A and the cold regenerator B ratio by weight 100: 50～100 is stirred, product; The mixing of described each material, stirring are all carried out at normal temperatures.
The use of cold asphalt rehabilitation agent of the present invention, specifically be the scene to be turned over dig or the waste asphalt concrete of milling is heated to about 60 ℃, pulverizes, is chilled to normal temperature, according to adding cold asphalt rehabilitation agent of the present invention with the waste asphalt weight concrete than the amount that is 1%～2%, stirring promptly gets reclaimed asphalt mixture.
The present invention has following beneficial effect:
1) cold asphalt rehabilitation agent preparation method of the present invention carries out at normal temperatures, and is pollution-free to ambient air, protected surrounding enviroment.
2) the asphalt-regenerating mixture over-all properties that interpolation cold asphalt rehabilitation agent of the present invention is made in waste asphalt is superior: its cohesive strength height, 60 ℃ of Marshall stabilitys can reach 8.2KN (pressing the T0709 testing method), high-temperature behavior is good, its 60 ℃ of dynamic stabilities (are pressed the T0719 testing method) up to 6300mm/ time, low-temperature cracking-resistance excellence, its-10 ℃ of limit breaking strains can reach 2850 μ ε (pressing the T0715 testing method), its rheological is good simultaneously, can reach 8 years actual service life, and its resistance of aging is strong, good weatherability; The asphalt-regenerating mixture that has added the cold regenerator of the present invention successfully is used for top course pitch, realized utilization of waste material effectively, improved old bituminous regeneration rate in the discarded asphalt, reduced the occupation of land that discarded bituminous concrete is stacked, reduced new building stones exploitation, saved the exploitation of gathering materials, avoided minimizing, the soil erosion of landslide and vegetation, environment has been played active effect.
3) in waste asphalt, add cold asphalt rehabilitation agent of the present invention and make reclaimed asphalt mixture, owing to be to adopt the construction of cold mixing method, saved a large amount of energy, avoided the discharging of toxic and harmful in a large amount of greenhouse gases and the pitch heat-processed again, environment has been played a positive role.
4) pavement performance of the reclaimed asphalt mixture after adding cold asphalt rehabilitation agent regeneration of the present invention has surpassed the pavement performance index request of the Ministry of Communications " asphalt highway regeneration techniques standard ", the pavement performance index of the plain asphalt compound of " asphalt highway design specifications " can be widely used in motorway and urban road and common road construction fully.
Embodiment
Below by embodiment the present invention is carried out concrete description; be necessary to be pointed out that at this following examples only are used for the present invention is further specified; can not be interpreted as limiting the scope of the invention, the person skilled in art can make some nonessential improvement and adjustment to the present invention according to the invention described above content.
Embodiment 1
With the 280g aromatic hydrocarbon oil, 7.5g 4010NA and 7.5g antioxidant 1010,15g 2,4-dihydroxymethyl benzophenone, 350g Resins, epoxy E51, the no particle that stirs is Bituminous Pavement Cold Regeneration agent A, the cashew nut oil modified amine of 300g and 40g ZY-10 glycidyl ester mixed evenly obtain Bituminous Pavement Cold Regeneration agent B, Bituminous Pavement Cold Regeneration agent A and cold regenerator B are stirred in 66: 34 ratio of above-mentioned weight ratio obtains the cold asphalt rehabilitation agent.The scene turned over dig or the waste asphalt concrete of milling (the old material of Chongqing Chongqing Fu motorway milling, 6 years duration of service) be heated to 60 ℃, grind diffusing gently with wooden stick, screening, be chilled to normal temperature, reclaim aged asphalt according to " highway engineering pitch and asphalt testing regulation JTJ 052-2000 " A Busenfa, in the aged asphalt that reclaims, according to the waste asphalt weight ratio be that 3%～8% amount is added the above-mentioned cold asphalt rehabilitation agent that makes, stirring promptly gets regeneration asphalt, compares with aged asphalt and the results are shown in Table 1.
The index contrast of table 1 regeneration asphalt and aged asphalt
| Pitch | 25 ℃ of penetration degrees | 15 ℃ of ductilities | Softening temperature |
| Aged asphalt | 33 | 25 | 64 |
| Regeneration asphalt | 68 | ＞100 | 51 |
The scene turned over dig or the waste asphalt concrete of milling (the old material of Chongqing Chongqing Fu motorway milling, 6 years duration of service) be heated to 60 ℃, grind diffusing gently with wooden stick, screening, be chilled to normal temperature, according to the waste asphalt weight concrete than being 1%～2% to add the above-mentioned cold asphalt rehabilitation agent that makes, stir, according to " asphalt highway regeneration techniques standard (JTGF41-2008) " shaping test piece, health, detect its pavement performance index, test result sees Table 2.
Table 2 is pressed the test result of JTG F41-2008
Dig turning over or the waste asphalt concrete of milling is heated to 60 ℃, grind diffusing gently with wooden stick, screening, require formate gradation composition according to AC-13C type grating then, at last according to the waste asphalt weight concrete than being the above-mentioned cold asphalt rehabilitation agent that make of 1.0～2.0% interpolations, evenly mix and stir the back according to standard " pitch and asphalt testing regulation " moulding and test, test result sees Table 3.
Table 3 is pressed the test result of plain asphalt AC-13C
As seen from the above table, add in waste asphalt mixture that the reclaimed asphalt mixture that the cold asphalt rehabilitation agent of embodiment 1 obtains has the cohesive strength height, rheological is good, resistance of aging is strong, good weatherability, high-temperature behavior is good, low-temperature cracking-resistance is excellent, excellent combination property, meet it as the requirement of top course bituminous fully, reach 8 years its work-ing life through practical proof.
Embodiment 2～6: make the cold asphalt rehabilitation agent by following material and consumption, all the other are with embodiment 1.
The cold asphalt rehabilitation agent that will make by last table raw material, according to the waste asphalt weight concrete than being 1%～2% to join the reclaimed asphalt mixture that obtains in the waste asphalt concrete, its 25 ℃ of penetration degrees are 65～70, ductility 15 ℃＞100, and softening temperature is 45～55.
Dig turning over or the waste asphalt concrete of milling is heated to 60 ℃, grind diffusing gently with wooden stick, screening, require formate gradation composition according to AC-13C type grating then, go up the cold asphalt rehabilitation agent that makes in the table according to adding than the amount that is 1.0～2.0% at last with the waste asphalt weight concrete, evenly mix and stir the back according to standard " pitch and asphalt testing regulation " moulding and test, 60 ℃ of Marshall stabilitys are 8.0～9.0KN (pressing the T0709 test), immersion Marshall residual stability 80～90% (pressing the T0709 test), the freeze thawing cleavage strength is 82～87% (pressing the T0729 test) than TSR, 60 ℃ of dynamic stabilities are 6000～7200mm/ time (pressing the T0719 test) ,-10 ℃ of limit breaking strain 2500～3450 μ ε (pressing the T0715 test).Add in waste asphalt mixture that the reclaimed asphalt mixture that the cold asphalt rehabilitation agent of embodiment 2～6 obtains has the cohesive strength height, rheological is good, resistance of aging is strong, good weatherability, high-temperature behavior is good, low-temperature cracking-resistance is excellent, excellent combination property, meet it as the requirement of top course bituminous fully, reach 6～8 years its work-ing life through practical proof.
Claims (7)
1. cold asphalt rehabilitation agent is characterized in that: described cold regenerator is to be that raw material makes with useless pitch activator, anti-aging agent, UV light absorber, strengthening agent, reinforcement solidifying agent and reinforcement auxiliary agent; Described useless pitch activator is any one or more composition of machine oil, Viscotrol C, naphthenic oil, aromatic hydrocarbon oil, furfural oil, the mixture that described anti-aging agent is made up of oxidation inhibitor and p phenylenediamine type antioxidant, described UV light absorber is 2,4-dihydroxymethyl benzophenone, described strengthening agent is bisphenol A type epoxy resin E44 or E51, described reinforcement solidifying agent is cashew nut oil modified amine hardener, and described reinforcement auxiliary agent is a glycidyl ester class epoxy active diluent.
2. cold asphalt rehabilitation agent as claimed in claim 1, it is characterized in that: useless pitch activator accounts for 20～50% in the described cold asphalt rehabilitation agent, anti-aging agent accounts for 0.3～2%, UV light absorber accounts for 0.3～2%, strengthening agent accounts for 15～35%, the reinforcement solidifying agent accounts for 15～35%, and the reinforcement auxiliary agent accounts for 3～20%, by weight percentage.
3. cold asphalt rehabilitation agent as claimed in claim 1 or 2 is characterized in that: described p phenylenediamine type antioxidant is DTPD, 4010NA, 4010 or 4020, and described oxidation inhibitor is antioxidant 1010,2264,264 or DBHA; Described glycidyl ester class epoxy active diluent is ZY-10 glycidyl ester, glycidyl ether 660,501,692 or 748.
4. cold asphalt rehabilitation agent as claimed in claim 1 or 2 is characterized in that: the weight ratio of p phenylenediamine type antioxidant and oxidation inhibitor is 1: 1～3 in the described anti-aging agent.
5. cold asphalt rehabilitation agent as claimed in claim 3 is characterized in that: the weight ratio of p phenylenediamine type antioxidant and oxidation inhibitor is 1: 1 in the described anti-aging agent.
6. cold asphalt rehabilitation agent as claimed in claim 1, it is characterized in that: the anti-aging agent that described cold asphalt rehabilitation agent is made up of 28% aromatic hydrocarbon oil, 0.75% antioxidant 4010NA and 0.75% antioxidant 1010,1.5% 2,4-dihydroxymethyl benzophenone, 35% polyphenol A type Resins, epoxy E51,30% cashew nut oil modified amine and 4% ZY-10 glycidyl ester be that raw material makes, by weight percentage.
7. as the preparation method of claim 1～6 cold asphalt rehabilitation agent as described in each, carry out as follows:
1) described useless pitch activator is added in the reactor, add described anti-aging agent, UV light absorber, strengthening agent in described ratio while stirring, the no particle that stirs is cold asphalt rehabilitation agent A;
2) described reinforcement solidifying agent and reinforcement auxiliary agent describedly are mixed in proportion, stirring obtains cold asphalt rehabilitation agent B;
3) described A is mixed, stirs with B, promptly make the cold asphalt rehabilitation agent; The mixing of described each material, stirring are all carried out at normal temperatures.
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102838876A (en) * | 2012-09-27 | 2012-12-26 | 南通东南公路工程有限公司 | Epoxy asphalt composition for roads and bridges, and preparation method thereof |
| CN102924936A (en) * | 2012-11-09 | 2013-02-13 | 重庆市智翔铺道技术工程有限公司 | Bituminous cold reclaiming agent and application of bituminous cold reclaiming agent in cold reclaiming of bituminous concrete |
| CN103254652A (en) * | 2013-05-13 | 2013-08-21 | 同济大学 | Method for carrying out cold-recycling on waste asphalt mixture by taking aromatic oil as recycling agent |
| CN103709768A (en) * | 2013-12-16 | 2014-04-09 | 韩合轩 | Novel asphalt pavement modifier |
| CN103923476A (en) * | 2014-04-24 | 2014-07-16 | 湖南科技大学 | Recyclable asphalt regenerant as well as preparation method and application process thereof |
| CN103923474A (en) * | 2014-04-14 | 2014-07-16 | 沈阳志合科技有限公司 | Waste asphalt mixture improving agent |
| CN104031397A (en) * | 2014-05-06 | 2014-09-10 | 宁波天意钢桥面铺装技术有限公司 | Regenerated epoxy asphalt pavement and making method thereof |
| CN104327521A (en) * | 2014-10-20 | 2015-02-04 | 河南省高远公路养护技术有限公司 | Old asphalt pavement normal-temperature activating and regenerating agent and preparation method thereof |
| CN104610768A (en) * | 2015-01-26 | 2015-05-13 | 江苏苏博特新材料股份有限公司 | Asphalt regeneration agent as well as preparation method and application thereof |
| WO2015154280A1 (en) * | 2014-04-10 | 2015-10-15 | Dow Global Technologies Llc | Curable epoxy resin compositions |
| CN105968309A (en) * | 2016-06-27 | 2016-09-28 | 合肥科天水性科技有限责任公司 | Waterborne polyurethane resin for synthetic leather fabric and preparation method thereof |
| CN109337392A (en) * | 2018-10-18 | 2019-02-15 | 武汉工程大学 | A kind of bitumen regenerant and preparation method thereof |
| CN111499252A (en) * | 2020-04-14 | 2020-08-07 | 贵州路陆邦公路材料有限公司 | Cold-mixing and cold-paving asphalt additive and preparation method of asphalt mixture |
| CN112662192A (en) * | 2020-12-16 | 2021-04-16 | 武汉度美迪新能源科技有限公司 | Preparation process of recycled asphalt pavement material |
| CN113292862A (en) * | 2021-05-28 | 2021-08-24 | 重庆市智翔铺道技术工程有限公司 | Asphalt thermal regenerant and preparation method thereof |
| CN115418081A (en) * | 2022-09-26 | 2022-12-02 | 广州市市政工程维修处有限公司 | Composite regenerant, warm-mix recycled asphalt mixture and preparation method |
| CN117050549A (en) * | 2023-10-10 | 2023-11-14 | 四川公路桥梁建设集团有限公司 | Asphalt warm-mix regenerant and preparation method and application thereof |
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| CN102838876A (en) * | 2012-09-27 | 2012-12-26 | 南通东南公路工程有限公司 | Epoxy asphalt composition for roads and bridges, and preparation method thereof |
| CN102924936A (en) * | 2012-11-09 | 2013-02-13 | 重庆市智翔铺道技术工程有限公司 | Bituminous cold reclaiming agent and application of bituminous cold reclaiming agent in cold reclaiming of bituminous concrete |
| CN103254652B (en) * | 2013-05-13 | 2016-01-20 | 同济大学 | As regenerator, waste asphalt mixture is carried out to the method for cold renewal with aromatic hydrocarbon oil |
| CN103254652A (en) * | 2013-05-13 | 2013-08-21 | 同济大学 | Method for carrying out cold-recycling on waste asphalt mixture by taking aromatic oil as recycling agent |
| CN103709768A (en) * | 2013-12-16 | 2014-04-09 | 韩合轩 | Novel asphalt pavement modifier |
| CN103709768B (en) * | 2013-12-16 | 2016-04-13 | 韩合轩 | Bituminous pavement properties-correcting agent |
| WO2015154280A1 (en) * | 2014-04-10 | 2015-10-15 | Dow Global Technologies Llc | Curable epoxy resin compositions |
| CN103923474A (en) * | 2014-04-14 | 2014-07-16 | 沈阳志合科技有限公司 | Waste asphalt mixture improving agent |
| CN103923476A (en) * | 2014-04-24 | 2014-07-16 | 湖南科技大学 | Recyclable asphalt regenerant as well as preparation method and application process thereof |
| CN103923476B (en) * | 2014-04-24 | 2016-03-23 | 湖南科技大学 | Can bitumen regenerant and preparation method thereof, the application art of repeatedly regeneration |
| CN104031397A (en) * | 2014-05-06 | 2014-09-10 | 宁波天意钢桥面铺装技术有限公司 | Regenerated epoxy asphalt pavement and making method thereof |
| CN104031397B (en) * | 2014-05-06 | 2016-04-20 | 宁波天意钢桥面铺装技术有限公司 | A kind of regeneration epoxy asphalt road surface and preparation method thereof |
| CN104327521A (en) * | 2014-10-20 | 2015-02-04 | 河南省高远公路养护技术有限公司 | Old asphalt pavement normal-temperature activating and regenerating agent and preparation method thereof |
| CN104610768A (en) * | 2015-01-26 | 2015-05-13 | 江苏苏博特新材料股份有限公司 | Asphalt regeneration agent as well as preparation method and application thereof |
| CN105968309A (en) * | 2016-06-27 | 2016-09-28 | 合肥科天水性科技有限责任公司 | Waterborne polyurethane resin for synthetic leather fabric and preparation method thereof |
| CN105968309B (en) * | 2016-06-27 | 2018-10-26 | 合肥科天水性科技有限责任公司 | A kind of waterborne polyurethane resin and preparation method thereof for synthetic leather fabric |
| CN109337392B (en) * | 2018-10-18 | 2021-01-05 | 武汉工程大学 | Asphalt regenerant and preparation method thereof |
| CN109337392A (en) * | 2018-10-18 | 2019-02-15 | 武汉工程大学 | A kind of bitumen regenerant and preparation method thereof |
| CN111499252A (en) * | 2020-04-14 | 2020-08-07 | 贵州路陆邦公路材料有限公司 | Cold-mixing and cold-paving asphalt additive and preparation method of asphalt mixture |
| CN112662192A (en) * | 2020-12-16 | 2021-04-16 | 武汉度美迪新能源科技有限公司 | Preparation process of recycled asphalt pavement material |
| CN113292862A (en) * | 2021-05-28 | 2021-08-24 | 重庆市智翔铺道技术工程有限公司 | Asphalt thermal regenerant and preparation method thereof |
| CN115418081A (en) * | 2022-09-26 | 2022-12-02 | 广州市市政工程维修处有限公司 | Composite regenerant, warm-mix recycled asphalt mixture and preparation method |
| CN115418081B (en) * | 2022-09-26 | 2023-07-25 | 广州市市政工程维修处有限公司 | Composite regenerant, warm mix regenerated asphalt mixture and preparation method |
| CN117050549A (en) * | 2023-10-10 | 2023-11-14 | 四川公路桥梁建设集团有限公司 | Asphalt warm-mix regenerant and preparation method and application thereof |
| CN117050549B (en) * | 2023-10-10 | 2023-12-22 | 四川公路桥梁建设集团有限公司 | Asphalt warm-mix regenerant and preparation method and application thereof |
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| CN102174267B (en) | 2012-07-25 |
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