CN105153547B - Improve warm-mixing additive and its application of asphalt high-temperature stability - Google Patents
Improve warm-mixing additive and its application of asphalt high-temperature stability Download PDFInfo
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- CN105153547B CN105153547B CN201410266797.XA CN201410266797A CN105153547B CN 105153547 B CN105153547 B CN 105153547B CN 201410266797 A CN201410266797 A CN 201410266797A CN 105153547 B CN105153547 B CN 105153547B
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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Abstract
The invention belongs to road asphalt field of material technology, and in particular to a kind of warm-mixing additive of raising asphalt high-temperature stability, be made up of the raw material of following parts by weight：30~50 parts of 15~30 parts of polypropylene, 8~12 parts of polyethylene, 8~10 parts of stearic acid, 35~60 parts of ethylene bis stearamide and OPE.The pitch warm-mixing additive of the present invention is prepared and using process is simple and environmentally-friendly, energy consumption is low, viscosity reducing effect is notable, the high temperature viscosity of pitch can effectively be reduced, reduction asphalt mix and stir and 20~40 DEG C of compacting temperature under conditions of, asphalt high-temperature stability can also be improved, the combination of warm mix and excellent high performance is realized.
Description
Technical field
The invention belongs to road asphalt field of material technology, and in particular to a kind of warm mix of raising asphalt high-temperature stability adds
Plus agent and its application.
Background technology
Asphalt concrete pavement is as jointless continuous pavement, and with surfacing, driving is comfortable, wearability is good, make an uproar
Sound is relatively low, short time limit, the advantages of maintenance is simple, open to traffic is fast, gradually instead of cement concrete pavement, and as me
One of principal mode of state and developed country's highway pavement.
But pitch is as a kind of response to temperature material, its performance be affected by temperature it is larger, with frequently occurring for extreme climate
And Heavy Traffic amount is increased rapidly, road rut disease is extremely serious, how to improve the high-temperature stability of pitch, reduces rut
Disease, it has also become the key issue that China road construction faces.
Improving the method for road surface high-temperature stability mainly has three kinds：Using modified pitch, optimization mixture gradation, using anti-
Rut agent.But the method complex process of modified pitch, cost is higher, and optimizes mixture gradation method and improve limited in one's ability, institute
With in high temperature area and Heavy Traffic section, using it is most be anti-rut agent.But almost all of anti-rut agent is required for
Competence exertion is acted under production that heat is mixed and construction method.Heat mix needs at high temperature mix, pave and roll, high temperature not only can
Cause the aging of pitch, also to consume the substantial amounts of energy, and produce and constantly give off a large amount of pernicious gases in work progress
And dust, these pernicious gases and dust not only severe contamination atmospheric environment, and endanger the healthy of operating personnel.
To conserve natural habitats, reduction environmental pollution and lack of energy, countries in the world all to greenhouse gases, pernicious gas with
And the discharge such as solid dust has carried out strict limitation.In consideration of it, Warm-Mix Bitumen Mixture (Warm Mix Asphalt, referred to as
WMA) technology is arisen at the historic moment.As a kind of new technology, it has consistent with corresponding hot-mix asphalt mixture even more excellent
Pavement performance, paves and mix temperature all decreases, and greatly reduces the energy resource consumption in production process and the discharge of flue dust,
Improve the ecological value.
Most of organic warm-mixing agent high-temperature behaviors are poor in the market.Patent CN101831187A discloses a kind of rubber
Glue modified asphalt warm-mixing agent, the warm-mixing agent can reduce by 30 DEG C of temperature of production, but the additive of the patent makes rubber modified asphalt
Softening point is reduced, and have impact on the high-temperature behavior of pitch.And the good additive of high-temperature behavior, again need at relatively high temperatures mix,
Paving and roll could be effective, and patent CN101525221A discloses a kind of novel anti-rutting agent and its production method, the material
Expect that high-temperature behavior is excellent, but mix, to pave and roll temperature be respectively 180 DEG C, 170 DEG C and more than 160 DEG C, there is fuel consumption
Greatly, harmful gas emission is big and accelerates ageing of asphalt problem.So warm mix is difficult to effectively be assisted all the time with high-temperature behavior
Adjust.
The content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to provide a kind of warm mix addition for improving asphalt high-temperature stability
Agent, viscosity reducing effect significantly, can effectively reduce the high temperature viscosity of pitch, and the present invention also provides its application, adds it to pitch
In, asphalt high-temperature stability can be improved, the combination of warm mix and excellent high performance is realized.
The warm-mixing additive of the present invention for improving asphalt high-temperature stability, is made up of the raw material of following parts by weight：
15~30 parts of polypropylene, 8~12 parts of polyethylene, 8~10 parts of stearic acid, 35~60 parts of ethylene bis stearamide and oxygen
Change 30~50 parts of Tissuemat E.
Polyethylene is low density polyethylene (LDPE), and its density is 0.910~0.940g/cm3。
The fusing point of OPE is 95~105 DEG C.
Polypropylene is random copolymer, and melt index is 28~42g/10min.
It is of the present invention improve asphalt high-temperature stability warm-mixing additive preparation method be：By polypropylene, polyethylene,
Stearic acid, ethylene bis stearamide and OPE are mixed successively at normal temperatures, and stirring 10~30 minutes is finished product.
The application of the warm-mixing additive of described raising asphalt high-temperature stability：Matrix pitch is heated to pitch flowing,
The described warm-mixing additive of addition, starts mixing plant and stirs untill additive fusing is uniform, that is, obtain warm-mixed asphalt.
The addition of warm-mixing additive is the 2%~4% of pitch weight.
The temperature that matrix pitch is heated is preferably 130~170 DEG C, more preferably 140~160 DEG C.
Mixing speed is 450~600r/min, and mixing time is 40~60 minutes.
In summary, the present invention has advantages below：
(1) warm-mixing additive of the present invention for improving asphalt high-temperature stability, can effectively reduce the high temperature of pitch
Viscosity, and asphalt high-temperature stability can be improved, pitch is mixed and stirred at a lower temperature without influenceing the high temperature of pitch
Performance.Significantly, high-temperature behavior is excellent, and the softening point of pitch is significantly improved for the additive viscosity reducing effect.
(2) this additive realizes the combination of warm mix and excellent high performance.Additive of the present invention is added
In pitch, it is possible to decrease asphalt is mixed and stirred and 20~40 DEG C of compacting temperature.
(3) preparation technology be simple and convenient to operate, small investment, energy consumption it is low, using convenient.
Embodiment
With reference to embodiment, the present invention will be further described.
Embodiment 1
Prepare a kind of warm-mixing additive for improving asphalt high-temperature stability：
Weigh the raw material of following parts by weight：15 parts of polypropylene, 10 parts of polyethylene, 8 parts of stearic acid, ethylene bis stearamide
45 parts and 30 parts of OPE, above-mentioned raw materials are put into stirred tank at normal temperatures in succession by said sequence, 30min is stirred
Afterwards, as warm-mixing additive finished product.(the density 0.910g/cm of polyethylene wherein used3, OPE fusing point 95
DEG C, polyacrylic melt index 28g/10min)
By 400g70#Road asphalt is heated to 140 DEG C, is flowed completely to pitch, the warm mix that addition embodiment 1 is prepared
Additive, the addition of the warm-mixing additive of addition is the 2% of pitch weight, starts mixing plant stirring, and low whipping speed is
Stir 60 minutes, be uniformly dissolved to additive under 450r/min, determine warm-mixed asphalt performance.It is shown in Table 1.
Embodiment 2
Prepare a kind of warm-mixing additive for improving asphalt high-temperature stability：
Weigh the raw material of following parts by weight：20 parts of polypropylene, 10 parts of polyethylene, 9 parts of stearic acid, ethylene bis stearamide
50 parts and 35 parts of OPE, above-mentioned raw materials are put into stirred tank at normal temperatures in succession in order, after stirring 30min,
As warm-mixing additive finished product.(the density 0.920g/cm of polyethylene wherein used3, OPE 105 DEG C of fusing point,
Polyacrylic melt index 35g/10min)
By 400g70#Road asphalt is heated to 140 DEG C, is flowed completely to pitch, the warm mix that addition embodiment 2 is prepared
Additive, the addition of the warm-mixing additive of addition is the 3% of pitch weight, starts mixing plant stirring, and low whipping speed is
Stir 50 minutes, be uniformly dissolved to additive under 550r/min, determine warm-mixed asphalt performance.It is shown in Table 1.
Embodiment 3
Prepare a kind of warm-mixing additive for improving asphalt high-temperature stability：
Weigh the raw material of following parts by weight：Polipropene 25 part, 10 parts of polyethylene, 10 parts of stearic acid, ethylene stearic bicine diester
50 parts of 35 parts of amine and OPE, above-mentioned raw materials are put into stirred tank at normal temperatures in succession in order, 10min is stirred
Afterwards, as warm-mixing additive finished product.(the density 0.940g/cm of polyethylene wherein used3, OPE fusing point 100
DEG C, polyacrylic melt index 28g/10min)
By 400g70#Road asphalt is heated to 130 DEG C, is flowed completely to pitch, the warm mix that addition embodiment 3 is prepared
Additive, the addition of the warm-mixing additive of addition is the 3% of pitch weight, starts mixing plant stirring, and low whipping speed is
Stir 60 minutes, be uniformly dissolved to additive under 550r/min, determine warm-mixed asphalt performance.It is shown in Table 1.
Embodiment 4
Prepare a kind of warm-mixing additive for improving asphalt high-temperature stability：
Weigh the raw material of following parts by weight：Polipropene 25 part, 12 parts of polyethylene, 10 parts of stearic acid, ethylene stearic bicine diester
45 parts of 50 parts of amine and OPE, above-mentioned raw materials are put into stirred tank at normal temperatures in succession in order, 20min is stirred
Afterwards, as warm-mixing additive finished product.(the density 0.940g/cm of polyethylene wherein used3, OPE fusing point 105
DEG C, polyacrylic melt index 35g/10min)
By 400g70#Road asphalt is heated to 140 DEG C, is flowed completely to pitch, the warm mix that addition embodiment 4 is prepared
Additive, the addition of the warm-mixing additive of addition is the 3% of pitch weight, starts mixing plant stirring, and low whipping speed is
Stir 40 minutes, be uniformly dissolved to additive under 600r/min, determine warm-mixed asphalt performance.It is shown in Table 1.
Embodiment 5
Prepare a kind of warm-mixing additive for improving asphalt high-temperature stability：
Weigh the raw material of following parts by weight：Polipropene 25 part, 10 parts of polyethylene, 10 parts of stearic acid, ethylene stearic bicine diester
35 parts of 50 parts of amine and OPE, above-mentioned raw materials are put into stirred tank at normal temperatures in succession in order, 30min is stirred
Afterwards, as warm-mixing additive finished product.(the density 0.940g/cm of polyethylene wherein used3, OPE fusing point 105
DEG C, polyacrylic melt index 42g/10min)
By 400g70#Road asphalt is heated to 170 DEG C, is flowed completely to pitch, the warm mix that addition embodiment 5 is prepared
Additive, the addition of the warm-mixing additive of addition is the 4% of pitch weight, starts mixing plant stirring, and low whipping speed is
Stir 55 minutes, be uniformly dissolved to additive under 500r/min, determine warm-mixed asphalt performance.It is shown in Table 1.
Embodiment 6
Prepare a kind of warm-mixing additive for improving asphalt high-temperature stability：
Weigh the raw material of following parts by weight：30 parts of polypropylene, 8 parts of polyethylene, 10 parts of stearic acid, ethylene bis stearamide
60 parts and 40 parts of OPE, above-mentioned raw materials are put into stirred tank at normal temperatures in succession in order, after stirring 30min,
As warm-mixing additive finished product.(the density 0.920g/cm of polyethylene wherein used3, OPE 105 DEG C of fusing point,
Polyacrylic melt index 42g/10min)
By 400g70#Road asphalt is heated to 140 DEG C, is flowed completely to pitch, the warm mix that addition embodiment 6 is prepared
Additive, the addition of the warm-mixing additive of addition is the 4% of pitch weight, starts mixing plant stirring, and low whipping speed is
Stir 60 minutes, be uniformly dissolved to additive under 550r/min, determine warm-mixed asphalt performance.It is shown in Table 1.
The properties of product of the warm-mixed asphalt of table 1
As can be seen from Table 1：The warm-mixed asphalt softening point prepared by the additive of the present invention is high, and illustrating admixture, this adds
Plus the high-temperature stability of the warm-mixed asphalt of agent preparation is obviously improved, with stronger high temperature anti-rut behavior；In addition,
Under the conditions of 135 DEG C, the warm-mixed asphalt prepared using the additive of the present invention has relatively low viscosity, illustrates the construction temperature in reduction
Still have under degree good mix, pave, compaction capacity, thermal energy consumption can be significantly reduced, pernicious gas and dust is reduced
Discharge, it is to avoid heat ageing and performance degradation occur during mix for warm-mixed asphalt；In summary, the warm mix that prepared by the present invention adds
Plus agent realizes the organic assembling of asphalt high-temperature stability and warm mix.
Claims (1)
1. a kind of pitch for adding the warm-mixing additive for improving asphalt high-temperature stability, it is characterised in that：Weigh following parts by weight
Several raw materials：30 parts of polypropylene, 8 parts of polyethylene, 10 parts of stearic acid, 60 parts of ethylene bis stearamide and OPE 40
Part, above-mentioned raw materials are put into stirred tank at normal temperatures in succession in order, stirred after 30min, as warm-mixing additive finished product；Its
In：The g/cm of density 0.920 of polyethylene used3, 105 DEG C of the fusing point of OPE, polyacrylic melt index 42
g/10min；
400g 70# road asphalts are heated to 140 DEG C, flowed completely to pitch, the warm-mixing additive prepared is added, adds
Plus warm-mixing additive addition be pitch weight 4%, start mixing plant stirring, low whipping speed be 550r/min under
Stirring 60 minutes, is uniformly dissolved to warm-mixing additive.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410266797.XA CN105153547B (en) | 2014-06-16 | 2014-06-16 | Improve warm-mixing additive and its application of asphalt high-temperature stability |
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| CN201410266797.XA CN105153547B (en) | 2014-06-16 | 2014-06-16 | Improve warm-mixing additive and its application of asphalt high-temperature stability |
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| CN105153547A CN105153547A (en) | 2015-12-16 |
| CN105153547B true CN105153547B (en) | 2017-10-13 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105670316B (en) * | 2016-02-04 | 2018-06-08 | 武汉成世通环保沥青工程有限公司 | Common mid temperature pitch of high solids content and preparation method thereof |
| CN105778529B (en) * | 2016-03-09 | 2018-03-23 | 山东交通学院 | A kind of warm mix type chromatic bituminous cement and preparation method thereof |
| CN108658510B (en) * | 2017-03-31 | 2021-08-10 | 中国石油化工股份有限公司 | Warm-mix asphalt mixture and preparation method thereof |
| CN108658511A (en) * | 2017-03-31 | 2018-10-16 | 中国石油化工股份有限公司 | Rubber-asphalt mixture and preparation method thereof |
| CN107652697B (en) * | 2017-09-30 | 2021-01-08 | 四川天道易科技有限公司 | Low-wax asphalt and preparation method thereof |
| CN108641384A (en) * | 2018-05-16 | 2018-10-12 | 重庆交通大学 | A kind of warm-mixed asphalt modifying agent and preparation method thereof |
| CN109054413A (en) * | 2018-08-02 | 2018-12-21 | 重庆建工住宅建设有限公司 | A kind of warm-mixed asphalt modifying agent and preparation method thereof |
| CN109988431A (en) * | 2019-03-01 | 2019-07-09 | 张燕军 | A kind of medium temperature modified asphalt mixture additive and its preparation and application |
| CN113817332A (en) * | 2021-09-24 | 2021-12-21 | 苏州科技大学 | Asphalt warm-mixing agent |
| CN116218240A (en) * | 2022-12-15 | 2023-06-06 | 河海大学 | High-viscosity asphalt modifier capable of being rapidly dissolved, high-viscosity asphalt based on high-viscosity asphalt modifier and preparation method of high-viscosity asphalt |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101041744A (en) * | 2007-04-04 | 2007-09-26 | 杨军海 | Bitumen modifier |
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- 2014-06-16 CN CN201410266797.XA patent/CN105153547B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101041744A (en) * | 2007-04-04 | 2007-09-26 | 杨军海 | Bitumen modifier |
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