CN101845227B - Plain asphalt reclaiming agent and preparation method and application thereof - Google Patents
Plain asphalt reclaiming agent and preparation method and application thereof Download PDFInfo
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- CN101845227B CN101845227B CN2010101841345A CN201010184134A CN101845227B CN 101845227 B CN101845227 B CN 101845227B CN 2010101841345 A CN2010101841345 A CN 2010101841345A CN 201010184134 A CN201010184134 A CN 201010184134A CN 101845227 B CN101845227 B CN 101845227B
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Abstract
The invention belongs to the field of a composite containing an asphalt material and a preparation method and application thereof, in particular to a plain asphalt reclaiming agent and preparation and application thereof. The plain asphalt reclaiming agent is prepared from the following components: 23-35 parts of matrix asphalt, 60-75 parts of reclaimed oil, 3-5 parts of plasticizer and 0-5 parts of high temperature stabilizer, and is obtained by heating, mixing and stirring the materials. The preparation method comprises the following steps: heating the matrix asphalt at 115-135DEG C; heating and evenly stirring the reclaimed oil, plasticizer and high temperature stabilizer at 115-135 DEG C to obtain a mixture; and finally, stirring the matrix asphalt and the mixture at 115-135 DEG C and cooling to obtain the plain asphalt reclaiming agent. The application is as follows: taking aging asphalt and heating at 110-135 DEG C, adding the plain asphalt reclaiming agent, wherein the additive amount thereof is more than 30% of that of the aging asphalt; and stirring the mixture at 100-110 DEG C to obtain the reclaimed asphalt. The invention has the advantages of low cost and good reclaiming effect.
Description
Technical field
The present invention relates to a kind of composition and method of making the same and application of macromolecular compound, be specifically related to a kind of composition and method of making the same and application of bituminous material.
Background technology
Along with the development of China's economy and society, the highway communication cause of China has also obtained development fast.By the end of the year 2009, the national highway total kilometrage that is open to traffic reaches 382.82 ten thousand kilometers; Wherein, motorway is 7.5 ten thousand kilometers.Along with the continuous increase of highway mileage, road quality classification is also improving constantly, and a large amount of low-grade highways obtain reconstruction and enlarging, and highway communication is just being brought into play increasing effect in the national economy life.
The high-grade highway overwhelming majority in the highway in China is a bituminous pavement.Bituminous pavement in use passes through the effect of traffic load and natural cause, and hardening is aging gradually.Pitch after aging is compared with protobitumen, and penetration degree, ductility reduce, and causes the road surface to produce crack, destruction such as loose.High speed development along with the highway communication cause, a large amount of highways has entered big or middle repairing the phase, need turn over a large amount of old pavements dig, milling, and this not only causes significant damage to environment, and under the very deficient situation of China's pitch resource, also caused the waste of a large amount of high-quality asphalts.Because China does not also have the regeneration techniques of old asphalt mixture on top of at present, the discarded amount of old pitch will reach 2,200,000 tons more than, if can be used, and can save materials cost every year more than 300,000,000 yuan, and this numeral be at the speed increase with every year 15%.Calculate that in view of the above bituminous pavement big or middle old asphalt mixture every year of repairing generation will if can carry out old bituminous regeneration when the time comes, but then economical with materials be taken 1,500,000,000 yuan in every year above 1,000 thousand ten thousand tons after 10 years.
Bituminous pavement on-site heat regeneration technology is through surface heating, scarifying milling with old asphalt pavement, and mix a certain proportion of new aggregate, new pitch and regenerator etc., utilize large-scale moving type scene " mixing apparatus " to mix and stir, straight making becomes intact bituminous pavement.Bituminous pavement on-site heat regeneration technology has possessed remarkable advantages such as economy, environmental protection, save energy, many countries with it as a basic policy.Can predict, in the near future, bituminous pavement on-site heat regeneration technology also will be used on a large scale in China.Yet a key effectively utilizing bituminous pavement on-site heat regeneration technology is to need a large amount of, high-quality, potent bitumen regenerant.Therefore, how present stage makes a kind of bitumen regenerant that can effectively be applied to bituminous pavement on-site heat regeneration technology by a large amount of experiments, just becomes those skilled in the art's technical problem that needs to be resolved hurrily.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, provide that a kind of cost is low, the plain asphalt reclaiming agent of favorable regeneration effect, provide also that a kind of starting material are easy to get, prepare that equipment requirements is low, preparation technology is simple, the preparation method of the plain asphalt reclaiming agent of low cost of manufacture, a kind of application of simple to operate, rapid-action, the persistent plain asphalt reclaiming agent of action effect also is provided.
For solving the problems of the technologies described above, the technical scheme that the present invention proposes is a kind of plain asphalt reclaiming agent, and described plain asphalt reclaiming agent is mainly prepared after heating, mixing, stirring by the component of following mass fraction:
23～35 parts of matrix pitches
60～75 parts of recovered oils
3～5 parts in softening agent and
0～5 part of high-temperature stabiliser.
In the above-mentioned plain asphalt reclaiming agent, described matrix pitch is preferably the new pitch of 70#.
In the above-mentioned plain asphalt reclaiming agent, described recovered oil is preferably high fragrance and divides the decompression oil plant of content, high flash point (for example more than 220 ℃), and it is 40%～48% (being preferably about 44.76%) that the fragrance in the described recovered oil divides content.Described recovered oil is generally the decompression oil plant that crude oil obtains after by the reliever fractionation.
In the above-mentioned plain asphalt reclaiming agent, described softening agent is preferably dibutyl phthalate.
In the above-mentioned plain asphalt reclaiming agent, described high-temperature stabiliser is preferably the straight chain aliphatic hydrocarbon.
The raw material of above-mentioned plain asphalt reclaiming agent of the present invention is formed and prescription mainly is based on following principle: according to our observation, research and practice, bituminous is aging mainly to be because variation has taken place its component, fragrance divides minimizing, colloid and bituminous matter increase, so the bituminous weathering process can be thought the result of pitch chemical composition translation; The regeneration of waste asphalt is exactly that fragrance divides being rich in, soft component is blended in the waste asphalt by a certain percentage, make it to set up new asphalt component, and it is flux matched more reasonable that it is contained, allow pitch be dispersed in better in fragrance branch, the saturated branch by means of colloid, form stable colloidal structure, thereby change the bituminous rheological property, make asphalt performance reach the requirement of correlated quality index.
As a total technical conceive, the present invention also provides a kind of preparation method of above-mentioned plain asphalt reclaiming agent, may further comprise the steps: at first, the matrix pitch of described mass fraction is heated 2h～3h under 115 ℃～135 ℃ temperature, and stir; Then, recovered oil, softening agent and the high-temperature stabiliser of described mass fraction heated 1h～2h under 115 ℃～135 ℃ temperature, stir mixture; At last, matrix pitch and described mixture after the heating are stirred 1h～2h under 115 ℃～135 ℃ states, naturally cool to the plain asphalt reclaiming agent that normal temperature promptly obtains the thickness liquid state.
As a total technical conceive, the present invention also provides a kind of above-mentioned application of plain asphalt reclaiming agent in the preparation regeneration asphalt, the concrete grammar of its application is: get aged asphalt and heat 2h～3h under 110 ℃～135 ℃ temperature, add described plain asphalt reclaiming agent in the aged asphalt after heating then, the addition of described plain asphalt reclaiming agent is more than 30% of aged asphalt consumption, under 100 ℃～110 ℃ temperature, mix then, obtain regeneration asphalt.
The vital role of above-mentioned plain asphalt reclaiming agent of the present invention is: under heat is melted state, make aged asphalt recover its use properties.Yet heat is mixed in the reclaiming process process at the scene, and the effectiveness of regenerator can be subjected to the influence of Heating temperature.If on-the-spot Heating temperature is too high, can cause that ageing of asphalt is serious, reduce effect; If on-the-spot Heating temperature is too low, regenerator and aged asphalt merge difficulty, are difficult to play regeneration, broken aggregate in the time of also can scarifying occurring simultaneously, and regenerating mixture appearance segregation, compacting difficulty, interlayer connect many problems such as bad.Plain asphalt reclaiming agent of the present invention at first has high thermal resistance and stability preferably, meanwhile, the present invention has controlled the suitable Heating temperature in the hot at the scene regeneration construction of plain asphalt reclaiming agent, and this has all guaranteed bituminous concrete pavement on-site heat regeneration quality well.
Generally speaking, plain asphalt reclaiming agent of the present invention and preparation method thereof has starting material and is easy to get, prepares advantages such as equipment requirements is low, preparation technology simple, low cost of manufacture, the use of plain asphalt reclaiming agent of the present invention is also quite convenient, use the back obvious to the regeneration effect of waste asphalt, can effectively, stably adapt to on-site heat regeneration heating hot environment, and rapid-action, action effect is lasting, and the regeneration asphalt after the allotment has three suitable big index index and needed pavement performances.
In addition; the present invention utilizes asphalt by on-site heat regeneration; prevent that the old material of bituminous concrete is to throwing aside the pollution of place and surrounding enviroment thereof; can protect the forest land effectively; safeguard natural landscape and ecotope; and the traffic interference is little during maintenance, helps the recovery of asphalt pavement structure ability to bear and prolongs service life of road surface.
Embodiment
Embodiment 1
A kind of plain asphalt reclaiming agent of present embodiment, this plain asphalt reclaiming agent are mainly prepared after heating, mixing, stirring by the component of following mass fraction:
30 parts of the new pitches of Esso 70#
65 parts of recovered oils
4 parts of dibutyl phthalates and
1 part of high-temperature stabiliser.
Above-mentioned recovered oil is the decompression oil plant that crude oil obtains after by the reliever fractionation, and wherein to divide content be 44.76% to fragrance, and high flash point is more than 220 ℃; Above-mentioned high-temperature stabiliser is a husky rope bit (sasobit).Husky rope bit is a kind of new type polyolefin type high temp stablizer, and its chemical composition is a synthetic long-chain saturated hydrocarbon, and dripping molten point is 115 ℃.
The preparation method of the plain asphalt reclaiming agent of above-mentioned present embodiment comprises the steps: at first, 30 parts the new pitches of Esso 70# is heated 3h under 115 ℃ of temperature, and stir; Then, 65 parts recovered oils, 4 parts dibutyl phthalate and 1 part high-temperature stabiliser are heated 2h under 115 ℃ of temperature, stir mixture; At last, matrix pitch and mixture after the heating are stirred 2h under 115 ℃ of states, naturally cool to the plain asphalt reclaiming agent that normal temperature promptly obtains the thickness liquid state.
Embodiment 2
A kind of plain asphalt reclaiming agent of present embodiment, this plain asphalt reclaiming agent are mainly prepared after mixing, heat, stirring by the component of following mass fraction:
23 parts of the new pitches of Esso 70#
72 parts of recovered oils
3 parts of dibutyl phthalates and
2 parts of high-temperature stabilisers.
Above-mentioned recovered oil is the decompression oil plant that crude oil obtains after by the reliever fractionation, and wherein to divide content be 44.76% to fragrance, and high flash point is more than 220 ℃; Above-mentioned high-temperature stabiliser is husky rope bit.
The preparation method of the plain asphalt reclaiming agent of above-mentioned present embodiment may further comprise the steps: at first, 23 parts the new pitches of Esso 70# are heated 2h under 135 ℃ of temperature, and stir; Then, 72 parts recovered oils, 3 parts dibutyl phthalate and 2 parts high-temperature stabiliser are heated 1h under 135 ℃ of temperature, stir mixture; At last, matrix pitch and mixture after the heating are stirred 1h under 135 ℃ of states, naturally cool to the plain asphalt reclaiming agent that normal temperature promptly obtains the thickness liquid state.
Embodiment 3
A kind of plain asphalt reclaiming agent of present embodiment, this plain asphalt reclaiming agent are mainly prepared after mixing, heat, stirring by the component of following mass fraction:
35 parts of the new pitches of Esso 70#
60 parts of recovered oils
3 parts of dibutyl phthalates and
2 parts of high-temperature stabilisers.
Above-mentioned recovered oil is the decompression oil plant that crude oil obtains after by the reliever fractionation, and wherein to divide content be 44.76% to fragrance, and high flash point is more than 220 ℃; Above-mentioned high-temperature stabiliser is husky rope bit.
Except the difference on all proportioning raw materials, the preparation method of present embodiment and embodiment 1 are identical.
Embodiment 4
A kind of plain asphalt reclaiming agent of present embodiment, this plain asphalt reclaiming agent are mainly prepared after mixing, heat, stirring by the component of following mass fraction:
25 parts of the new pitches of Esso 70#
70 parts of recovered oils
5 parts of dibutyl phthalates and
0 part of high-temperature stabiliser.
Above-mentioned recovered oil is the decompression oil plant that crude oil obtains after by the reliever fractionation, and wherein to divide content be 44.76% to fragrance, and high flash point is more than 220 ℃.
The preparation method of the plain asphalt reclaiming agent of above-mentioned present embodiment may further comprise the steps: at first, 25 parts the new pitches of Esso 70# are heated 2.5h under 120 ℃ of temperature, and stir; Then, the dibutyl phthalate of 70 parts recovered oils and 5 parts is heated 1h under 120 ℃ of temperature, stir mixture; At last, matrix pitch and mixture after the heating are stirred 2h under 120 ℃ of states, naturally cool to the plain asphalt reclaiming agent that normal temperature promptly obtains the thickness liquid state.
Embodiment 5
A kind of plain asphalt reclaiming agent of present embodiment, this plain asphalt reclaiming agent are mainly prepared after mixing, heat, stirring by the component of following mass fraction:
23 parts of the new pitches of Esso 70#
67 parts of recovered oils
5 parts of dibutyl phthalates and
5 parts of high-temperature stabilisers.
Above-mentioned recovered oil is the decompression oil plant that crude oil obtains after by the reliever fractionation, and wherein to divide content be 44.76% to fragrance, and high flash point is more than 220 ℃; Above-mentioned high-temperature stabiliser is husky rope bit.
The preparation method of the plain asphalt reclaiming agent of above-mentioned present embodiment comprises the steps: at first, 23 parts the new pitches of Esso 70# is heated 2h under 115 ℃～135 ℃ temperature, and stir; Then, 67 parts recovered oils, 5 parts dibutyl phthalate and 5 parts high-temperature stabiliser are heated 2h under 115 ℃～135 ℃ temperature, stir mixture; At last, matrix pitch and mixture after the heating are stirred 2h under 115 ℃～135 ℃ states, naturally cool to the plain asphalt reclaiming agent that normal temperature promptly obtains the thickness liquid state.
Embodiment 6
Get the property test that a certain amount of aged asphalt carries out aged asphalt, content of the test comprises penetration degree, ductility and softening temperature etc., and test result is as shown in table 1 below:
Table 1: extractive aged asphalt test-results
| Test subject | Unit | Aged asphalt 1 | Aged asphalt 2 | Aged asphalt 3 |
| Penetration degree (25 ℃, 100g, 5s) | 0.1mm | ?7.2 | ?9.3 | ?6.8 |
| Softening temperature (ring and ball method) | ℃ | ?84.5 | ?85.5 | ?86.5 |
| Viscosity (15 ℃, 5cm/min) | cm | ?6.9 | ?0.5 | ?0.4 |
From the test-results of last table 1 as can be seen, the penetration degree of aged asphalt descends greatly, and softening temperature rising amplitude is very big, all above " asphalt highway construction technique normalizing (JTG F40-2004) code requirement, this explanation aged asphalt hardening becomes fragile; In addition, the ductility of aged asphalt descends obviously, and the plasticity index of this explanation aged asphalt seriously reduces.
Select the plain asphalt reclaiming agent of the foregoing description 1 configuration for use, the The performance test results of the plain asphalt reclaiming agent of embodiment 1 is as shown in table 2 below:
The The performance test results of the plain asphalt reclaiming agent of table 2: embodiment 1
From the test result of last table 2 as can be seen: the basic technical indicator of regenerator satisfies " asphalt highway regeneration techniques standard " (JTG F41-2008) regenerator index recommended value, has the performance of anti-short ageing preferably.
The plain asphalt reclaiming agent that makes with present embodiment 1 is used to prepare regeneration asphalt, the concrete grammar of its application is: get a certain amount of aged asphalt (present embodiment use be the aged asphalt of going up in the table 1 1) at 115 ℃～135 ℃ heating 2.5h, add plain asphalt reclaiming agent in the aged asphalt after heating then, the addition of plain asphalt reclaiming agent is 4.08%～30.6% of an aged asphalt consumption, under 100 ℃～110 ℃ conditions, mix then, obtain regeneration asphalt.Utilize the component test result of the regeneration asphalt that the plain asphalt reclaiming agent of embodiment 1 makes as shown in table 3 below.
Table 3: mix the variation (unit: %) of joining plain asphalt component after the different ratios regenerator
By last table 3 as can be seen, increase along with the plain asphalt reclaiming agent addition of present embodiment, the regeneration asphalt medium pitch matter that makes at last, gelationus content are reducing gradually, the content that saturated branch, fragrance divide is improving gradually, this has not only confirmed the mechanism of action of plain asphalt reclaiming agent of the present invention, and has verified its technique effect on regenerating waste asphalt.
Utilize the The performance test results of the above-mentioned regeneration asphalt that the plain asphalt reclaiming agent of embodiment 1 makes as shown in table 4 below.
The The performance test results of the regeneration asphalt that table 4: embodiment 6 makes
By the test result of last table 4 as seen, along with the increase of regenerator addition, the penetration degree of regeneration asphalt raises gradually, and softening temperature reduces gradually, and this illustrates that crisp hard aged asphalt is softening gradually; The increase rate of ductility is also very big, and this explanation bituminous plasticity is obviously improved.When the addition of plain asphalt reclaiming agent is 30% when above, can make the regeneration asphalt of preparation satisfy the requirement that industry is used substantially.
The foundation of above-mentioned performance test is People's Republic of China's industry standard " highway engineering pitch and asphalt testing regulation " (JTJ 052-2000).
The plain asphalt reclaiming agent that alternative is selected embodiment 2～5 preparations removes to prepare regeneration asphalt, and its technique effect and performance perameter are similar to Example 6, all can reach technique effect of the present invention, realizes the regeneration of aged asphalt.
Claims (4)
1. a plain asphalt reclaiming agent is characterized in that, described plain asphalt reclaiming agent is mainly prepared after heating, mixing, stirring by the component of following mass fraction:
23～35 parts of matrix pitches
60～75 parts of recovered oils
3～5 parts of dibutyl phthalates and
0～5 part of high-temperature stabiliser;
Described recovered oil is that high fragrance divides the decompression oil plant of content, high flash point; It is 40%～48% that fragrance in the described recovered oil divides content, and described regeneration oil flash is more than 220 ℃; Described high-temperature stabiliser is the straight chain aliphatic hydrocarbon.
2. plain asphalt reclaiming agent according to claim 1 is characterized in that: described matrix pitch is the new pitch of 70#.
3. the preparation method of a plain asphalt reclaiming agent as claimed in claim 1 or 2 may further comprise the steps: at first, the matrix pitch of described mass fraction is heated 2h～3h under 115 ℃～135 ℃ temperature, and stir; Then, recovered oil, dibutyl phthalate and the high-temperature stabiliser of described mass fraction heated 1h～2h under 115 ℃～135 ℃ temperature, stir mixture; At last, matrix pitch and described mixture after the heating are stirred 1h～2h under 115 ℃～135 ℃ states, naturally cool to normal temperature and promptly obtain plain asphalt reclaiming agent.
4. the application of plain asphalt reclaiming agent as claimed in claim 1 or 2 in the preparation regeneration asphalt, it is characterized in that: get aged asphalt and under 110 ℃～135 ℃ temperature, heat 2h～3h, add described plain asphalt reclaiming agent in the aged asphalt after heating then, the addition of described plain asphalt reclaiming agent is more than 30% of aged asphalt consumption, under 100 ℃～110 ℃ temperature, mix then, obtain regeneration asphalt.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101841345A CN101845227B (en) | 2010-05-27 | 2010-05-27 | Plain asphalt reclaiming agent and preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101841345A CN101845227B (en) | 2010-05-27 | 2010-05-27 | Plain asphalt reclaiming agent and preparation method and application thereof |
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| CN101845227A CN101845227A (en) | 2010-09-29 |
| CN101845227B true CN101845227B (en) | 2011-11-30 |
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Families Citing this family (5)
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| CN102618046A (en) * | 2012-03-31 | 2012-08-01 | 英达热再生有限公司 | SBS (styrene-butadiene-styrene) modified regenerant, preparation method thereof and asphalt regeneration method |
| CN103774517B (en) * | 2012-10-25 | 2015-10-21 | 中国石油化工股份有限公司 | A kind of asphalt pavement regeneration method of adding regenerative agent |
| 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 |
| CN109354890B (en) * | 2018-11-02 | 2020-11-03 | 长沙理工大学 | Waste asphalt regeneration method |
| CN110003666A (en) * | 2019-03-28 | 2019-07-12 | 重庆通力高速公路养护工程有限公司 | The excellent bitumen regenerant of ageing-resistant performance and its application |
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| CN101177535A (en) * | 2006-11-09 | 2008-05-14 | 深圳市海川实业股份有限公司 | Bitumen recycling agent for improving high temperature stability of waste and old bitumen mixture |
| CN100422265C (en) * | 2007-04-23 | 2008-10-01 | 凌天清 | Old asphalt pavement regeneration additive and method for preparing asphalt pavement regeneration mixture with the same |
| CN101475746A (en) * | 2009-01-16 | 2009-07-08 | 武汉理工大学 | Waste asphalt reclaiming agent and preparation thereof |
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