CN112111164A - Method for refining asphalt for road construction - Google Patents
Method for refining asphalt for road construction Download PDFInfo
- Publication number
- CN112111164A CN112111164A CN202010867010.0A CN202010867010A CN112111164A CN 112111164 A CN112111164 A CN 112111164A CN 202010867010 A CN202010867010 A CN 202010867010A CN 112111164 A CN112111164 A CN 112111164A
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- asphalt
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- powder
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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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0856—Iron
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0887—Tungsten
-
- 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
Abstract
The invention relates to a method for refining asphalt for road construction, which solves the problems that the asphalt for road surfaces in the prior art has large high-temperature rheological property, is easy to crack at low temperature and needs to be improved in wear resistance. A method for refining asphalt for road construction features that its main formula includes matrix asphalt, high-temp. resistant mixed powder, waste rubber powder, polyurethane solution, low-temp. resistant member, stabilizer, emulsifier and tackifier. According to the invention, the high temperature resistance and hardness of materials such as vanadium metal powder and niobium metal powder are utilized to improve the flow resistance and wear resistance of the pavement at high temperature; meanwhile, the low-temperature-resistant O-shaped rubber ring is formed by combining the low-temperature-resistant steel powder and the low-temperature-resistant rubber powder, the hardness of the low-temperature-resistant steel material is resisted, the wear resistance of the asphalt pavement at low temperature is improved, and the O-shaped ring is similar to a lacing wire by utilizing the adhesion degree of the low-temperature-resistant rubber powder, so that the O-shaped ring has a good protection effect on the deformation and cracking of the asphalt pavement; therefore, the novel asphalt with small fluidity at high temperature, difficult brittle fracture and wear resistance at low temperature is realized.
Description
Technical Field
The invention relates to a method for refining asphalt for road construction.
Background
The asphalt is a black-brown complex mixture composed of hydrocarbons with different molecular weights and nonmetal derivatives thereof, is one of high-viscosity organic liquids, is in a liquid state, has a black surface, and is soluble in carbon disulfide. The main components of the asphalt are asphaltene and resin, and the asphalt is a waterproof, moistureproof and anticorrosive organic cementing material. The asphalt has the advantages of luster, liquid, semisolid or solid state, brittle quality at low temperature, and good cohesiveness and corrosion resistance.
However, with the rapid increase of traffic flow and driving frequency and the frequent change of weather and climate, the anti-flowing property of the asphalt pavement at high temperature is further improved, and the brittle fracture and the wear resistance of the asphalt pavement at low temperature are improved;
therefore, a method for refining asphalt for road construction is provided, and the novel asphalt with small fluidity at high temperature, difficult brittle fracture at low temperature and wear resistance is obtained by refining.
Disclosure of Invention
The invention aims to provide a method for refining asphalt for road construction, which solves the problems that the asphalt for road surfaces has large high-temperature rheological property, is easy to crack at low temperature and needs to be improved in wear resistance.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for refining asphalt for road construction features that its main formula includes matrix asphalt, high-temp. resistant mixed powder, waste rubber powder, polyurethane solution, low-temp. resistant member, stabilizer, emulsifier and tackifier.
Preferably, the content of each component is as follows by weight percent: 70-80% of matrix asphalt, 3-5% of high-temperature resistant mixed powder, 9-15% of waste rubber powder, 5-8% of polyurethane solution, 3-5% of low-temperature resistant component, 1-5% of stabilizer, 1-5% of emulsifier and 3-5% of tackifier.
Preferably, the matrix asphalt is any one or more of asphalt 70-A, asphalt 70-B, asphalt 90-A and asphalt 90-B road petroleum asphalt.
Preferably, the high-temperature resistant mixed powder is any one or more of vanadium metal powder, niobium metal powder, tantalum metal powder, tungsten metal powder and molybdenum metal powder.
Preferably, the low-temperature resistant member is a low-temperature resistant O-shaped rubber ring formed by mixing low-temperature steel powder and low-temperature resistant rubber components, and asphalt liquid is brushed outside the rubber ring.
Preferably, the tackifier is a tackifying resin.
Preferably, the method for refining the asphalt for road construction comprises the following steps:
(1) preparing raw materials: after selecting raw materials, crushing powdery raw materials by using a crusher to form high-temperature-resistant mixed powder and waste rubber powder, heating, mixing and stirring the high-temperature-resistant mixed powder and the waste rubber powder at a high temperature to fully mix and fuse the two kinds of powder into a whole, then drying the mixture at a low temperature, and finally processing the mixture into powder particles with different particle sizes by using the crusher;
(2) heating and swelling: heating the matrix asphalt to 130-180 ℃ to fully melt the matrix asphalt into liquid; then adding the crushed and formed particles in the step (1) into the melted matrix asphalt, and continuously mixing and stirring to immerse the particles for later use;
(3) and (3) continuously mixing: adding the low-temperature resistant member, the emulsifier, the tackifier and the polyurethane solution into the mixture obtained in the step (2), and keeping the temperature at 180-200 ℃;
(4) controlling development: after the mixing is finished, the asphalt enters a finished product tank or a development tank, a stabilizer is added, the temperature is controlled at 190 ℃ and the asphalt is developed under the action of a stirrer.
The invention has at least the following beneficial effects:
1. the high-temperature resistance and the hardness of vanadium metal powder, niobium metal powder, tantalum metal powder, tungsten metal powder and molybdenum metal powder are utilized to improve the flow resistance and the wear resistance of the pavement at high temperature; meanwhile, the low-temperature-resistant O-shaped rubber ring is formed by combining the low-temperature-resistant steel powder and the low-temperature-resistant rubber powder, the hardness of the low-temperature-resistant steel material is resisted, the wear resistance of the asphalt pavement at low temperature is improved, and the O-shaped ring is similar to a lacing wire by utilizing the adhesion degree of the low-temperature-resistant rubber powder, so that the O-shaped ring has a good protection effect on the deformation and cracking of the asphalt pavement; therefore, the novel asphalt with small fluidity at high temperature, difficult brittle fracture and wear resistance at low temperature is realized.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
A method for refining asphalt for road construction comprises the following main formula of matrix asphalt, high-temperature resistant mixed powder, waste rubber powder, polyurethane solution, low-temperature resistant components, a stabilizer, an emulsifier and a tackifier, wherein the components in percentage by weight are as follows: 70-80% of matrix asphalt, 3-5% of high-temperature resistant mixed powder, 9-15% of waste rubber powder, 5-8% of polyurethane solution, 3-5% of low-temperature resistant components, 1-5% of stabilizing agents, 1-5% of emulsifying agents and 3-5% of tackifiers, wherein the matrix asphalt is any one or more of asphalt 70-A, 70-B, 90-A and 90-B road petroleum asphalt, the high-temperature resistant mixed powder is any one or more of vanadium metal powder, niobium metal powder, tantalum metal powder, tungsten metal powder and molybdenum metal powder, the low-temperature resistant components are low-temperature resistant O-shaped rubber rings formed by mixing low-temperature steel powder and low-temperature resistant rubber components, asphalt liquid is brushed outside the rubber rings, and the tackifiers are tackifying resins;
in the embodiment, by adding high-temperature resistant mixed powder consisting of any one or more of vanadium metal powder, niobium metal powder, tantalum metal powder, tungsten metal powder and molybdenum metal powder into the matrix asphalt, the high-temperature resistance and hardness of the vanadium metal powder, the niobium metal powder, the tantalum metal powder, the tungsten metal powder and the molybdenum metal powder are utilized to improve the flow resistance and the wear resistance of the pavement at high temperature; meanwhile, the low-temperature-resistant O-shaped rubber ring is formed by combining the low-temperature-resistant steel powder and the low-temperature-resistant rubber powder, the hardness of the low-temperature-resistant steel material is resisted, the wear resistance of the asphalt pavement at low temperature is improved, and the O-shaped ring is similar to a lacing wire by utilizing the adhesion degree of the low-temperature-resistant rubber powder, so that the O-shaped ring has a good protection effect on the deformation and cracking of the asphalt pavement; therefore, the novel asphalt with small fluidity at high temperature, difficult brittle fracture and wear resistance at low temperature is realized.
Example two
A method for refining asphalt for road construction comprises the following steps:
(1) preparing raw materials: after selecting raw materials, crushing powdery raw materials by using a crusher to form high-temperature-resistant mixed powder and waste rubber powder, heating, mixing and stirring the high-temperature-resistant mixed powder and the waste rubber powder at a high temperature to fully mix and fuse the two kinds of powder into a whole, then drying the mixture at a low temperature, and finally processing the mixture into powder particles with different particle sizes by using the crusher;
(2) heating and swelling: heating the matrix asphalt to 130-180 ℃ to fully melt the matrix asphalt into liquid; then adding the crushed and formed particles in the step (1) into the melted matrix asphalt, and continuously mixing and stirring to immerse the particles for later use;
(3) and (3) continuously mixing: adding the low-temperature resistant member, the emulsifier, the tackifier and the polyurethane solution into the mixture obtained in the step (2), and keeping the temperature at 180-200 ℃;
(4) controlling development: after mixing, the asphalt enters a finished product tank or a development tank, a stabilizer is added, the temperature is controlled at 190 ℃ and the asphalt is developed under the action of a stirrer;
in the embodiment, the powder particles formed by multiple crushing can be more uniformly distributed in the asphalt, so that the uniformity of asphalt refining is improved.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The method for refining the asphalt for road construction is characterized in that the main formula of the method comprises matrix asphalt, high-temperature resistant mixed powder, waste rubber powder, polyurethane solution, low-temperature resistant components, a stabilizer, an emulsifier and a tackifier.
2. The method for refining the asphalt for road construction as claimed in claim 1, wherein the contents of the components by weight percentage are as follows: 70-80% of matrix asphalt, 3-5% of high-temperature resistant mixed powder, 9-15% of waste rubber powder, 5-8% of polyurethane solution, 3-5% of low-temperature resistant member, 1-5% of stabilizer, 1-5% of emulsifier and 3-5% of tackifier.
3. The method for refining the asphalt for road construction according to claim 1, wherein the base asphalt is any one or more of asphalt 70-A, asphalt 70-B, asphalt 90-A and asphalt 90-B.
4. The method for refining the asphalt for road construction according to claim 1, wherein the high-temperature-resistant mixed powder is any one or more of vanadium metal powder, niobium metal powder, tantalum metal powder, tungsten metal powder and molybdenum metal powder.
5. The method for refining asphalt for road construction according to claim 1, wherein the low temperature resistant member is a low temperature resistant O-shaped rubber ring formed by mixing low temperature steel powder and a low temperature resistant rubber component, and asphalt liquid is brushed on the rubber ring.
6. The method for refining asphalt for road construction as claimed in claim 1, wherein the tackifier is tackifying resin.
7. The method for refining the asphalt for road construction according to claim 1, comprising the steps of:
(1) preparing raw materials: after selecting raw materials, crushing powdery raw materials by using a crusher to form high-temperature-resistant mixed powder and waste rubber powder, heating, mixing and stirring the high-temperature-resistant mixed powder and the waste rubber powder at a high temperature to fully mix and fuse the two kinds of powder into a whole, then drying the mixture at a low temperature, and finally processing the mixture into powder particles with different particle sizes by using the crusher;
(2) heating and swelling: heating the matrix asphalt to 130-180 ℃ to fully melt the matrix asphalt into liquid; then adding the crushed and formed particles in the step (1) into the melted matrix asphalt, and continuously mixing and stirring to immerse the particles for later use;
(3) and (3) continuously mixing: adding the low-temperature resistant member, the emulsifier, the tackifier and the polyurethane solution into the mixture obtained in the step (2), and keeping the temperature at 180-200 ℃;
(4) controlling development: after the mixing is finished, the asphalt enters a finished product tank or a development tank, a stabilizer is added, the temperature is controlled at 190 ℃ and the asphalt is developed under the action of a stirrer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010867010.0A CN112111164A (en) | 2020-08-26 | 2020-08-26 | Method for refining asphalt for road construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010867010.0A CN112111164A (en) | 2020-08-26 | 2020-08-26 | Method for refining asphalt for road construction |
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| CN112111164A true CN112111164A (en) | 2020-12-22 |
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| CN202010867010.0A Pending CN112111164A (en) | 2020-08-26 | 2020-08-26 | Method for refining asphalt for road construction |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103044935A (en) * | 2013-01-04 | 2013-04-17 | 陈永红 | Modified cold-stirred and cold-spread room temperature bitumen and preparation method thereof |
| CN104693822A (en) * | 2015-02-16 | 2015-06-10 | 北京路德永泰环保科技有限公司 | Low-temperature ductility and high-temperature-resistant storage stability auxiliaries for modified asphalt as well as preparation method for low-temperature ductility and high-temperature-resistant storage stability auxiliaries and modified asphalt |
| CN109957255A (en) * | 2019-04-09 | 2019-07-02 | 南京科技职业学院 | A kind of preparation method of rubber modified asphalt |
| CN111138875A (en) * | 2020-01-06 | 2020-05-12 | 上海驰骋道路建设发展有限公司 | Asphalt for road construction and refining method |
-
2020
- 2020-08-26 CN CN202010867010.0A patent/CN112111164A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103044935A (en) * | 2013-01-04 | 2013-04-17 | 陈永红 | Modified cold-stirred and cold-spread room temperature bitumen and preparation method thereof |
| CN104693822A (en) * | 2015-02-16 | 2015-06-10 | 北京路德永泰环保科技有限公司 | Low-temperature ductility and high-temperature-resistant storage stability auxiliaries for modified asphalt as well as preparation method for low-temperature ductility and high-temperature-resistant storage stability auxiliaries and modified asphalt |
| CN109957255A (en) * | 2019-04-09 | 2019-07-02 | 南京科技职业学院 | A kind of preparation method of rubber modified asphalt |
| CN111138875A (en) * | 2020-01-06 | 2020-05-12 | 上海驰骋道路建设发展有限公司 | Asphalt for road construction and refining method |
Non-Patent Citations (1)
| Title |
|---|
| 冶金报社科技部编: "《冶金科学导游》", 30 June 1985 * |
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Application publication date: 20201222 |
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