CN106317518B - Warm-mixed asphalt warm-mixing agent and its application process - Google Patents
Warm-mixed asphalt warm-mixing agent and its application process Download PDFInfo
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- CN106317518B CN106317518B CN201510338107.1A CN201510338107A CN106317518B CN 106317518 B CN106317518 B CN 106317518B CN 201510338107 A CN201510338107 A CN 201510338107A CN 106317518 B CN106317518 B CN 106317518B
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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
Abstract
The present invention relates to a kind of warm-mixed asphalt warm-mixing agent and its application processes, belong to asphalt modification technical field.The warm-mixed asphalt is made of with warm-mixing agent the raw material of following mass fraction：1~5 part of 1~5 part of aliphatic acid, 0.5~2.5 part of amide and rubber powder；Three kinds of component synergistic effects.The warm-mixed asphalt can effectively reduce the mixing and stirring of pitch with warm-mixing agent, pave, roll temperature, overcome the problems such as it pollutes big environment, energy consumption, ageing of asphalt decline, have significant viscosity reducing effect；The problem of prior art warm-mixed asphalt low-temperature ductility is poor is overcome, improves the cryogenic property of pitch while viscosity reduction；The application process of the present invention is simple and practicable, convenient to carry out.
Description
Technical field
The present invention relates to a kind of warm-mixed asphalt warm-mixing agent and its application processes, belong to asphalt modification technical field.
Background technology
Traditional asphalt pavement construction method is hot-mix asphalt mixture method HAM (Hot Mixture Asphalt), is being mixed
Some visible or sightless pollutants can be discharged during closing, transport and constructing, cause the environmental problems such as greenhouse effects,
It damages to health of human body.In order to reduce energy consumption and reduce discharge amount of exhaust gas, people start to develop energy-saving and environment-friendly warm mix drip
Green mixture WMA (Warm Mixture Asphalt).At present, the warm mix technology that Warm-Mix Bitumen Mixture uses is prepared mainly to divide
It is following three kinds：
(1) organic viscosity reduction type warm mix technology reduces viscosity during heated bitumen mix, organic thinner using organic thinner
Based on wax or esters.This warm mix technology is not required to be transformed original MIXING SYSTEM CONTROLLED BY, and equipment cost is relatively low.
(2) foamed asphalt viscosity reduction warm mix technology reduces the viscosity of pitch by water or organic foaming agent foamed asphalt.This
Kind warm mix technology needs to increase asphalt foam generation system, and investment is larger.
(3) emulsion dispersion asphalt viscosity reduction technology, it is different from first two, asphalt viscosity is reduced by emulsifying technology.This temperature
The technology of mixing needs to be transformed equipment, and special warm-mixing additive is set to use pipeline.
Organic warm-mixing agent pitch cryogenic property multipair greatly is affected in the prior art, and the warm mix of low temperature performance well is modified drip
Green viscosity is larger, and viscosity it is small warm mix plain asphalt cryogenic property it is poor.Chinese patent CN 102976649B disclose one kind
Waste rubber powder modified asphalt warm-mixing agent and preparation method thereof, which is rationally compounded by each component drops modified pitch viscosity
It is low, so as to which waste rubber powder modified asphalt be made to have good workability.Nonetheless, the viscosity of the warm mix modified pitch is still
Much larger than the viscosity of warm mix plain asphalt.
The warm-mixing agent that Warm-Mix Bitumen Mixture uses at present generally belongs to the patented product of external specialized company, these temperature
It is good to mix agent viscosity reducing effect, but cost is higher.Domestic warm-mixing agent research and development are also very much, but performance is undesirable, largely restricts
The promotion and application of domestic warm-mixed asphalt, therefore the warm-mixed asphalt for developing high performance-price ratio is the certainty of China's road construction development
Selection.
Invention content
In view of the deficiencies of the prior art, the object of the present invention is to provide a kind of warm-mixed asphalt warm-mixing agents, reduce warm mix drip
Green viscosity, solves the problems, such as that warm-mixed asphalt low-temperature ductility is poor；Present invention simultaneously provides its application processes.
Warm-mixed asphalt warm-mixing agent of the present invention, is made of the raw material of following mass fraction：
1~5 part of aliphatic acid；
0.5~2.5 part of amide；
1~5 part of rubber powder.
Wherein,
The aliphatic acid is one kind in stearic acid or palmitic acid.
The amide is one kind in the double oleamides of ethylene or ethylene bis stearamide.
The rubber powder is preferably styrene butadiene rubber powder.The fineness of styrene butadiene rubber powder is 10~40 mesh.
Matrix pitch, when preparing warm-mixed asphalt, is heated to by the application process of the warm-mixed asphalt warm-mixing agent first
It 130~140 DEG C, adds in warm-mixing agent and is uniformly mixed to get warm-mixed asphalt.Be uniformly mixed at 140~160 DEG C constant temperature stir
15-25 minutes.
The matrix pitch is bi tumenf orr oad, preferably 70# heavy traffic paving asphalts.
When preparing warm-mixed asphalt, warm-mixing agent dosage accounts for 1~3wt.% of matrix pitch dosage.
In conclusion beneficial effects of the present invention are as follows：
(1) there is synergistic effect between warm-mixing agent each component of the present invention：The addition of rubber powder is improving aliphatic acid to pitch
The influence of cryogenic property, the addition of aliphatic acid can help improve pitch and add in the problem of viscosity after rubber powder is big.Ethylene is double hard
The double oleamides of acyl amine/ethylene can improve influence of the aliphatic acid to asphalt softening point, while rubber powder can also be promoted to exist
It is uniformly swollen in pitch, improves heat ageing phenomenon of the pitch during rubber powder modified, while ethylene bis stearamide/ethylene is double
Oleamide can also increase each component dispersibility, reduce by 135 DEG C of viscosity of pitch.
(2) warm-mixing agent of the present invention can effectively reduce mixing and stirring, pave, rolling temperature for pitch, overcome its pollute environment,
The problems such as energy consumption is big, ageing of asphalt decline, has significant viscosity reducing effect, it is poor to overcome prior art warm-mixed asphalt low-temperature ductility
The problem of, improve pitch cryogenic property while viscosity reduction.
(3) present invention realizes the combination of warm mix and superior low-temperature performance.With the development warm-mixed asphalt skill of science and technology
The environmental benefit and economic benefit that art generates will be protruded more, will there is more wide development and application prospect.
(4) present invention simultaneously provides its application processes, simple and practicable, convenient to carry out.
Specific embodiment
With reference to embodiment, the present invention will be further described.
All raw materials used in embodiment are purchased in market unless otherwise specified.
Embodiment 1
The warm-mixed asphalt is made of with warm-mixing agent the raw material of following mass fraction：
1.5 parts of 1 part of stearic acid, 1 part of ethylene bis stearamide and styrene butadiene rubber powder.
The application process of the warm-mixed asphalt warm-mixing agent：
70# heavy traffic paving asphalts are heated to 130 DEG C, add in the above-mentioned warm-mixing agent of 70# heavy traffic paving asphalt dosages 3wt.% at 160 DEG C
Lower constant temperature stirs 20 minutes.
Embodiment 2
The warm-mixed asphalt is made of with warm-mixing agent the raw material of following mass fraction：
1 part of 2 parts of the double oleamides of 1 part of palmitic acid, ethylene and styrene butadiene rubber powder.
The application process of the warm-mixed asphalt warm-mixing agent：
70# heavy traffic paving asphalts are heated to 135 DEG C, add in the above-mentioned warm-mixing agent of 70# heavy traffic paving asphalt dosages 1wt.% at 150 DEG C
Lower constant temperature stirs 15 minutes.
Embodiment 3
The warm-mixed asphalt is made of with warm-mixing agent the raw material of following mass fraction：
2 parts of 3 parts of stearic acid, 0.5 part of ethylene bis stearamide and styrene butadiene rubber powder.
The application process of the warm-mixed asphalt warm-mixing agent：
70# heavy traffic paving asphalts are heated to 138 DEG C, add in the above-mentioned warm-mixing agent of 70# heavy traffic paving asphalt dosages 1wt.% at 155 DEG C
Lower constant temperature stirs 20 minutes.
Embodiment 4
The warm-mixed asphalt is made of with warm-mixing agent the raw material of following mass fraction：
3 parts of 4 parts of stearic acid, 2.5 parts of ethylene bis stearamide and styrene butadiene rubber powder.
The application process of the warm-mixed asphalt warm-mixing agent：
70# heavy traffic paving asphalts are heated to 140 DEG C, add in the above-mentioned warm-mixing agent of 70# heavy traffic paving asphalt dosages 2wt.% at 150 DEG C
Lower constant temperature stirs 25 minutes.
Embodiment 5
The warm-mixed asphalt is made of with warm-mixing agent the raw material of following mass fraction：
2.5 parts of 5 parts of stearic acid, 1.5 parts of ethylene bis stearamide and styrene butadiene rubber powder.
The application process of the warm-mixed asphalt warm-mixing agent：
70# heavy traffic paving asphalts are heated to 140 DEG C, add in the above-mentioned warm-mixing agent of 70# heavy traffic paving asphalt dosages 2wt.% at 140 DEG C
Lower constant temperature stirs 20 minutes.
Comparative example 1
70# heavy traffic paving asphalts are heated to 135 DEG C.
Comparative example 2
70# heavy traffic paving asphalts are heated to 135 DEG C, 3 parts of stearic acid is added in and is stirred 20 minutes at 145 DEG C.
The obtained pitch of embodiment 1-5 and comparative example 1-2 is tested for the property respectively, test result is as follows shown in table：
As can be seen from the table, the warm-mixed asphalt that embodiment 1-5 is prepared using warm-mixing agent of the present invention is at 135 DEG C
With relatively low viscosity, and 80 DEG C of viscosity increased, and it is good to illustrate that the pitch still has under the conditions of construction temperature is reduced
It is good mix and stir, pave, compaction capacity, thermal energy consumption, the discharge for reducing pernicious gas and dust can be significantly reduced, warm mix is avoided to drip
Heat ageing and performance degradation occur during mixing and stirring for blueness.The warm-mixed asphalt being prepared simultaneously using warm-mixing agent of the present invention it is low
Warm ductility greatly improves, and softening point also has larger improvement, illustrates that the high temperature of warm-mixed asphalt can be improved by adding warm-mixing agent of the present invention
Stability and Low-temperature antifreeze fragility.
Claims (8)
1. a kind of warm-mixed asphalt warm-mixing agent, it is characterised in that：It is made of the raw material of following mass fraction：
1~5 part of aliphatic acid；
0.5~2.5 part of amide；
1~5 part of rubber powder；
Amide is one kind in the double oleamides of ethylene or ethylene bis stearamide.
2. warm-mixed asphalt warm-mixing agent according to claim 1, it is characterised in that：Aliphatic acid is in stearic acid or palmitic acid
One kind.
3. warm-mixed asphalt warm-mixing agent according to claim 1, it is characterised in that：Rubber powder is styrene butadiene rubber powder.
4. warm-mixed asphalt warm-mixing agent according to claim 3, it is characterised in that：The fineness of styrene butadiene rubber powder is 10~40
Mesh.
5. a kind of application process of any warm-mixed asphalt warm-mixing agents of claim 1-4, it is characterised in that：Prepare warm mix
During pitch, matrix pitch is heated to 130~140 DEG C first, warm-mixing agent is added in and is uniformly mixed to get warm-mixed asphalt.
6. the application process of warm-mixed asphalt warm-mixing agent according to claim 5, it is characterised in that：Matrix pitch is road
Asphalt.
7. the application process of warm-mixed asphalt warm-mixing agent according to claim 5, it is characterised in that：Warm-mixing agent dosage accounts for base
1~3wt% of matter asphalt content.
8. the application process of warm-mixed asphalt warm-mixing agent according to claim 5, it is characterised in that：Be uniformly mixed for
Constant temperature stirs 15-25 minutes at 140~160 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510338107.1A CN106317518B (en) | 2015-06-17 | 2015-06-17 | Warm-mixed asphalt warm-mixing agent and its application process |
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| CN201510338107.1A CN106317518B (en) | 2015-06-17 | 2015-06-17 | Warm-mixed asphalt warm-mixing agent and its application process |
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| CN106317518A CN106317518A (en) | 2017-01-11 |
| CN106317518B true CN106317518B (en) | 2018-07-03 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108659552B (en) * | 2017-03-31 | 2021-10-22 | 中国石油化工股份有限公司 | Environment-friendly heat-insulating mixed asphalt and preparation method thereof |
| CN108659553A (en) * | 2017-03-31 | 2018-10-16 | 中国石油化工股份有限公司 | Asphalt flame-retardant thinner and preparation method thereof |
| CN108707341A (en) * | 2018-06-11 | 2018-10-26 | 江苏金阳新材料科技有限公司 | A kind of warm-mixed asphalt warm-mixing agent and its application process |
| CN108727844A (en) * | 2018-06-11 | 2018-11-02 | 江苏金阳新材料科技有限公司 | A kind of the warm-mixed asphalt warm-mixing agent and its application process of phosphate ester-containing salt |
| CN113861703B (en) * | 2020-06-30 | 2023-04-07 | 中国石油化工股份有限公司 | Wheel-sticking-free asphalt material and preparation method thereof |
| CN113817332A (en) * | 2021-09-24 | 2021-12-21 | 苏州科技大学 | Asphalt warm-mixing agent |
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| US8859649B2 (en) * | 2010-07-26 | 2014-10-14 | Zydex Industries | Asphalt compositions including a disperion of microgels dipersed in an oil |
| CN104559245B (en) * | 2013-10-22 | 2017-01-11 | 中国石油化工股份有限公司 | Warm mix asphalt and preparation method thereof |
| CN103740119B (en) * | 2014-01-03 | 2016-03-02 | 爱思开沥青（上海）有限公司 | Pre-prepared warm mix modifying asphalt and preparation method thereof |
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