CN108219491A - Colorful Asphalt Pavement - Google Patents
Colorful Asphalt Pavement Download PDFInfo
- Publication number
- CN108219491A CN108219491A CN201810162118.2A CN201810162118A CN108219491A CN 108219491 A CN108219491 A CN 108219491A CN 201810162118 A CN201810162118 A CN 201810162118A CN 108219491 A CN108219491 A CN 108219491A
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- CN
- China
- Prior art keywords
- modification biological
- biological glue
- color asphalt
- biogum
- asphalt
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- 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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of Colorful Asphalt Pavements, and modification biological glue is applied to by the present invention to be prepared on color asphalt.Invention additionally discloses a kind of preparation methods of modification biological glue, include the following steps：Modified additive and biogum are added in into reaction kettle, under the conditions of 120 150 DEG C, reaction system pressure is maintained at 0.5 1.5KPa, is stirred to react 0.5 2h.The present invention discloses a kind of color asphalt, containing modification biological glue prepared by the method, i.e., on the basis of existing technology, adds in suitable modification biological glue.Biogum is modified by the present invention, modified biological adhesiveness bigger, and the enhancing of hot conditions stability inferior, after being merged with Petropols, high-temperature behavior is strong, thermal stability is good, adhesiveness is strong, meanwhile, flexibility also gets a promotion；The auxiliary agents such as white carbon, the hollow glass micropearl of addition make the cementitious matter after fusion have microcellular structure, are particularly suitable for that the volume of traffic is larger or the occasions such as porous pavement use.
Description
Technical field
The present invention relates to a kind of Colorful Asphalt Pavements, belong to road traffic engineering field.
Background technology
Color asphalt also known as chromatic cementing agent are to imitate asphalt component, using Petropols and SBS modifier etc.
The cementitious matter that chemical materials blending and modifying forms, this pitch are not colored or colourless, but dark brown in itself, in recent years because
Market custom is referred to as color asphalt.Color asphalt three norms need to reach matrix pitch technical requirement, and technology will
It asks and meets CJJ/T218-2014《Urban road colour asphalt pavement technical regulation》.According to its pavement performance LS series
Color asphalt is divided into matrix, modification, extraordinary three categories, adapts to colour and mats formation the various different demands in market.
Color asphalt, which is mated formation, is primarily adapted for use in all kinds of slow-vehicle systems such as green road, cycle track, pavement, landscape garden road
And landscape road pavement.Road surface is laid with using color asphalt concrete in the road, one has beautifying city, road improvement ring
Border shows Urban style effect, is applied particularly to the ground such as avenue, square, scenic spot, park and tourist sight road；Its
Two Colorful Asphalt Pavements, which have, induces wagon flow, the effect that traffic administration is made intuitively to change, and is applied particularly to distinguish the road of different function
Section and track, to improve the recognition effect of driver, increase the traffic capacity and the traffic safety of road；Thirdly novel colored drip
Green road surface, it is higher than plain asphalt surface friction coefficient, so also having anti-skidding effect.Driver an emergency situation is encountered brake when,
Colored road surface can prevent defective steering stabilizer.At different temperature and external environment effect, high-temperature stability, anti-water damage
And durability is very good, and does not occur deformation, phenomena such as asphalt membrane peels off, it is good with base caking property.
Colorful Asphalt Pavement is primarily referred to as the asphalt concrete pavement of addition pigment, uses Petropols（Albino bitumen）With
And the bituminous paving of pigment is added in mixture, it is light color used in color asphalt（It is or colourless）Cementitious matter is to make at present
With more kind, it is to use modern petrochemical product, such as aromatic oil, polymer, resin mix and plain asphalt
The comparable binder of performance, adds certain pigment, is allowed to show certain color.
Petropols and the albino bitumen of extract oil of lubricating oil synthesis do not have the macromolecular substances such as traditional asphalt studies on asphaltene,
Therefore the performance of color asphalt still has gap, especially high-temperature behavior compared with general black pitch.By adding a large amount of height thereto
Molecularly Imprinted Polymer such as SBS, PE, EVA, SBR can partly improve the performance of chromatic bitumen mixture, but effect is still paid no attention to
Think.It, will although can meet chromatic bitumen mixture high-temperature behavior if polymer is more than 10% in the additive amount of color asphalt
It asks, but can lead to the problem of that viscosity is excessive, cause color asphalt in the paving of production, storage, transport, pumping and mixture, grind
The links such as pressure go wrong；On the other hand, the cost of the color asphalt of high polymer content is very high.Due to the high temperature of color asphalt
Performance is insufficient, leads to that it cannot be applied in southern high-temperature, the volume of traffic is larger or the occasions such as porous pavement.
Invention content
The technical problem to be solved by the present invention is to, a kind of Colorful Asphalt Pavement is provided, it is more by the biology for adding in modified
Macromolecular obtains the color asphalt glue that high-temperature behavior is strong, thermal stability is good, adhesiveness is strong, flexibility is good, anti-water damage property is strong
Ramming material.
Modification biological glue is applied to and prepares on color asphalt by the present invention.The biogum is selected from the one of following substance
Kind：Guar gum, carragheen, Arabic gum, locust bean gum, pectin, konjac glucomannan and xanthans.
In the biogum, what is preferentially selected is guar gum.Guar gum is in the one of Indian-Pakistani subcontinent from extensive plantation
A kind of High Purity natural polysaccharide extracted in kind legume cluster bean.Due to its unique molecular structure feature and natural sex,
It is made to rapidly become the novel environment friendly paper making additive of superior performance；It is also extensively used for the necks such as food, oil, medicine simultaneously
Domain.The present invention is modified, and is applied in the preparation of bituminous paving cementitious matter.
The present invention also provides a kind of preparation methods of modification biological glue, include the following steps：
Modified additive and biogum are added in into reaction kettle, under the conditions of 120-150 DEG C, reaction system pressure is maintained at 0.5-
1.5KPa is stirred to react 0.5-2h.The modified additive is selected from white carbon, hollow glass micropearl.
The present invention provides a kind of color asphalt, containing modification biological glue prepared by the method, i.e., in the prior art
On the basis of, add in suitable modification biological glue.
Preferably, the present invention provides a kind of color asphalt component, includes the component of following parts by weight：20~50 C5 stones
Oleoresin, 15~40 C9 Petropols, 20~40 rubber oil, 3~15 powder styrene butadiene rubber sbr modifying agent, 5~10
Alcohol-soluble resin, 3~8 modification biological glue.
Further, the different color asphalt of color, the present invention can also add in 2-5 parts of pigment in order to obtain.
In said components, the ingredient used all is the field conventional constituents, and the C5 Petropols are cracking ethylenes
Fraction is formed through thermal polymerization or catalytic polymerization, and average molecular weight is between 1000-3000.The C9 Petropols are to split
Solution gasoline hydrogenation by-product C9 fractions are made for raw material, and average molecular weight is between 500-1000.
Beneficial effects of the present invention：
The large biological molecules such as guar gum are modified by the present invention, modified biological adhesiveness bigger, stablize under hot conditions
Property enhancing, after being merged with Petropols, high-temperature behavior is strong, thermal stability is good, adhesiveness is strong, meanwhile, flexibility also gets a promotion；
The auxiliary agents such as white carbon, the hollow glass micropearl of addition, make the cementitious matter after fusion have microcellular structure, be particularly suitable for the volume of traffic compared with
The occasions such as big or porous pavement use.
Specific embodiment
Embodiment 1
A kind of color asphalt is present embodiments provided, includes the component of following parts by weight：50 C5 Petropols, 40 C9 stones
Oleoresin, 40 rubber oil, 15 powder styrene butadiene rubber sbr modifying agent, 10 alcohol-soluble resin, 8 modification biological glue.
Modification biological glue is selected from guar gum.The preparation method of modification biological glue, includes the following steps：
Modified additive and biogum are added in into reaction kettle, under the conditions of 150 DEG C, reaction system pressure is maintained at 1.5KPa, stirring
React 1h.The modified additive is selected from hollow glass micropearl.
Embodiment 2
A kind of color asphalt is present embodiments provided, includes the component of following parts by weight：50 C5 Petropols, 40 C9 stones
Oleoresin, 40 rubber oil, 15 powder styrene butadiene rubber sbr modifying agent, 10 alcohol-soluble resin, 8 modification biological glue.
Modification biological glue is selected from carragheen.The preparation method of modification biological glue, includes the following steps：
Modified additive and biogum are added in into reaction kettle, under the conditions of 150 DEG C, reaction system pressure is maintained at 1.5KPa, stirring
React 1h.The modified additive is selected from hollow glass micropearl.
Embodiment 3
A kind of color asphalt is present embodiments provided, includes the component of following parts by weight：50 C5 Petropols, 40 C9 stones
Oleoresin, 40 rubber oil, 15 powder styrene butadiene rubber sbr modifying agent, 10 alcohol-soluble resin, 8 modification biological glue.
Modification biological glue is selected from Arabic gum.The preparation method of modification biological glue, includes the following steps：
Modified additive and biogum are added in into reaction kettle, under the conditions of 150 DEG C, reaction system pressure is maintained at 1.5KPa, stirring
React 1h.The modified additive is selected from hollow glass micropearl.
4 performance test of embodiment
In use, among being launched together according to the color asphalt of color asphalt or granulated solid and mixing cylinder, gather materials (building stones) plus
200~230 DEG C of heat, carries out abundant uniform mixing, that is, produces color asphalt blended stock, drop temperature is at 185~210 DEG C；Then
It can be paved, be rolled according to corresponding construction technology.
By above-mentioned chromatic bituminous cement according to Chinese transportation ministerial standard《Highway engineering pitch and Asphalt Mixture Experiment
Regulation》Method as defined in JTJE20-2011 measures softening point, needle penetration and the ductility of chromatic bituminous cement, and colour is dripped
Green mixture carries out Marshall Test and wheel tracking test test, and asphalt uses AC-13 gradings, and test the results are shown in Table 1
With table 2.
The setting of comparative example：In order to embody the promotion effect of technical solution of the present invention, performance test of the invention increases
Add a comparative example, difference lies in be added without the ingredient of modification biological glue for the component and embodiment 1 of comparative example.
The three norms result of the test of 1 chromatic bituminous cement of table.
The Marshall Test of 2 chromatic bituminous cement of table and wheel tracking test result.
Certainly, it is limitation of the present invention that above description, which is not, and the present invention is also not limited to the example above, the art
Those of ordinary skill, in the essential scope of the present invention, the variations, modifications, additions or substitutions made should all belong to the present invention
Protection domain.
Claims (8)
1. application of the modification biological glue on color asphalt is prepared.
2. application according to claim 1, the biogum is selected from one kind of following substance：Guar gum, carragheen, Ah
Draw primary glue, locust bean gum, pectin, konjac glucomannan and xanthans.
3. application according to claim 2, which is characterized in that the biogum preferentially selected is guar gum.
4. a kind of preparation method of modification biological glue, which is characterized in that include the following steps：
Modified additive and biogum are added in into reaction kettle, under the conditions of 120-150 DEG C, reaction system pressure is maintained at 0.5-
1.5KPa is stirred to react 0.5-2h.
5. the method for modification biological glue according to claim 4, which is characterized in that the modified additive is selected from hard charcoal
Black, hollow glass micropearl.
A kind of 6. color asphalt, which is characterized in that the modification biological glue prepared containing the method described in claim 4.
7. color asphalt according to claim 6, which is characterized in that include the component of following parts by weight：
20~50 C5 Petropols, 15~40 C9 Petropols, 20~40 rubber oil, 3~15 powder butadiene-styrene rubber
SBR modifying agent, 5~10 alcohol-soluble resin, 3~8 modification biological glue.
8. color asphalt according to claim 7, which is characterized in that further include 2-5 parts of pigment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810162118.2A CN108219491B (en) | 2018-02-26 | 2018-02-26 | Color asphalt pavement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810162118.2A CN108219491B (en) | 2018-02-26 | 2018-02-26 | Color asphalt pavement |
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| Publication Number | Publication Date |
|---|---|
| CN108219491A true CN108219491A (en) | 2018-06-29 |
| CN108219491B CN108219491B (en) | 2021-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810162118.2A Active CN108219491B (en) | 2018-02-26 | 2018-02-26 | Color asphalt pavement |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109233299A (en) * | 2018-07-27 | 2019-01-18 | 四川高路道路新型材料研发有限公司 | A kind of chromatic bituminous cement and preparation method thereof |
| CN112300528A (en) * | 2020-10-19 | 2021-02-02 | 上海市政工程设计研究总院（集团）有限公司 | Preparation method of cementing material modifier for ultrathin overlay asphalt mixture |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102746517A (en) * | 2012-08-01 | 2012-10-24 | 株洲时代电气绝缘有限责任公司 | Luminescent colored bitumen emulsion and preparation method thereof |
| CN105237806A (en) * | 2014-07-12 | 2016-01-13 | 卢桂才 | Reactive asphalt waterproof sealant containing alkenyl bridging agent and preparation method for reactive asphalt waterproof sealant |
| CN106009711A (en) * | 2016-07-05 | 2016-10-12 | 南昌大学 | Method for preparing fish gelatin |
| CN106317758A (en) * | 2016-08-31 | 2017-01-11 | 广西交通科学研究院 | Special colored asphalt cementing agent for water drainage pavement and preparation method of special colored asphalt cementing agent |
| CN106674610A (en) * | 2016-12-11 | 2017-05-17 | 戴琪 | Method for preparing edible mushroom packaging material from laccase modified water lettuce fiber |
| CN106701046A (en) * | 2015-07-17 | 2017-05-24 | 中石化石油工程技术服务有限公司 | Soilless polyether amine alkyl glucoside drilling fluid and preparation method thereof |
| CN106832746A (en) * | 2017-03-13 | 2017-06-13 | 重庆重交再生资源开发股份有限公司 | The cementing material formula and its preparation technology of formulating colorful pitch |
| KR101773920B1 (en) * | 2017-03-27 | 2017-09-01 | 주식회사 지케이기술연구소 | High Grade Waterproofing Color Asphalt Concrete Composition and Constructing Methods for Repair Section Using Thereof |
| CN107114792A (en) * | 2017-05-10 | 2017-09-01 | 山东禹王制药有限公司 | A kind of preparation method of enteric soft capsules |
-
2018
- 2018-02-26 CN CN201810162118.2A patent/CN108219491B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102746517A (en) * | 2012-08-01 | 2012-10-24 | 株洲时代电气绝缘有限责任公司 | Luminescent colored bitumen emulsion and preparation method thereof |
| CN105237806A (en) * | 2014-07-12 | 2016-01-13 | 卢桂才 | Reactive asphalt waterproof sealant containing alkenyl bridging agent and preparation method for reactive asphalt waterproof sealant |
| CN106701046A (en) * | 2015-07-17 | 2017-05-24 | 中石化石油工程技术服务有限公司 | Soilless polyether amine alkyl glucoside drilling fluid and preparation method thereof |
| CN106009711A (en) * | 2016-07-05 | 2016-10-12 | 南昌大学 | Method for preparing fish gelatin |
| CN106317758A (en) * | 2016-08-31 | 2017-01-11 | 广西交通科学研究院 | Special colored asphalt cementing agent for water drainage pavement and preparation method of special colored asphalt cementing agent |
| CN106674610A (en) * | 2016-12-11 | 2017-05-17 | 戴琪 | Method for preparing edible mushroom packaging material from laccase modified water lettuce fiber |
| CN106832746A (en) * | 2017-03-13 | 2017-06-13 | 重庆重交再生资源开发股份有限公司 | The cementing material formula and its preparation technology of formulating colorful pitch |
| KR101773920B1 (en) * | 2017-03-27 | 2017-09-01 | 주식회사 지케이기술연구소 | High Grade Waterproofing Color Asphalt Concrete Composition and Constructing Methods for Repair Section Using Thereof |
| CN107114792A (en) * | 2017-05-10 | 2017-09-01 | 山东禹王制药有限公司 | A kind of preparation method of enteric soft capsules |
Non-Patent Citations (6)
| Title |
|---|
| LIANG-LIANG TU ET AL.: ""Effect of the Welan Gum Biopolymer on Rheological Properties and Storage Stability of Bitumens"", 《JOURNAL OF TESTING AND EVALUATION》 * |
| 中华人民共和国公安部消防局编: "《中国消防手册（第1版）》", 31 December 2007, 上海科学技术出版社 * |
| 任满年等: "《沥青生产与应用技术问答（第1版）》", 31 May 2005, 中国石化出版社 * |
| 吕百龄主编: "《实用工业助剂全书（第1版）》", 31 August 2001, 化学工业出版社 * |
| 姚日生主编: "《药用高分子材料（第二版）》", 30 April 2008, 化学工业出版社 * |
| 蒋建新等: "《功能性多糖胶开发与应用（第1版）》", 31 January 2013, 中国轻工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109233299A (en) * | 2018-07-27 | 2019-01-18 | 四川高路道路新型材料研发有限公司 | A kind of chromatic bituminous cement and preparation method thereof |
| CN112300528A (en) * | 2020-10-19 | 2021-02-02 | 上海市政工程设计研究总院（集团）有限公司 | Preparation method of cementing material modifier for ultrathin overlay asphalt mixture |
| CN112300528B (en) * | 2020-10-19 | 2023-10-20 | 上海市政工程设计研究总院（集团）有限公司 | Preparation method of cementing material modifier of ultrathin cover-surface asphalt mixture |
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| CN108219491B (en) | 2021-08-24 |
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Inventor after: Song Liangyou Inventor after: Liu Guilan Inventor after: Song Yingxuan Inventor after: Duan Qingwu Inventor after: Zhen Zhong Dai Inventor after: Xu Liangjun Inventor before: Song Liangyou Inventor before: Yu Mengwen Inventor before: Duan Qingwu Inventor before: Zhen Zhong Dai Inventor before: Xu Liangjun |
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Effective date of registration: 20210804 Address after: 257066 room 311, building 21, ecological Valley, 38 Huanghe Road, Dongying District, Dongying City, Shandong Province Applicant after: DONGYING GUANGTONG TECHNOLOGY Co.,Ltd. Address before: 257091 Shandong city of Dongying province Dongying District Front Street No. 65 Applicant before: SHANDONG KEDA INFRASTRUCTURE Co.,Ltd. |
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