CN112480697A - High-strength asphalt based on normal-temperature anti-rutting performance and preparation method thereof - Google Patents
High-strength asphalt based on normal-temperature anti-rutting performance and preparation method thereof Download PDFInfo
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- CN112480697A CN112480697A CN202011361106.6A CN202011361106A CN112480697A CN 112480697 A CN112480697 A CN 112480697A CN 202011361106 A CN202011361106 A CN 202011361106A CN 112480697 A CN112480697 A CN 112480697A
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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
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
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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)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
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Abstract
The invention discloses high-strength asphalt based on normal-temperature anti-rutting performance and a preparation method thereof, and belongs to the technical field of road materials. The high-strength asphalt comprises the following components in parts by weight: 90-105 parts of No. 25/45 asphalt, 1-10 parts of rubber oil, 1-7 parts of styrene-butadiene-styrene block copolymer (SBS), 3-8 parts of ethylene-vinyl acetate copolymer (EVA) and 0.1-0.3 part of sulfur; the preparation method comprises the following steps: (1) melting the three-phase-reduced extract oil, SBS and EVA at the temperature of 140-180 ℃, and fully stirring; (2) melting No. 25/45 asphalt at 140-170 ℃; (3) adding the molten materials of the three-way reducing extraction oil, SBS and EVA, and shearing at the temperature of 160-190 ℃ for 0.5-3 h; (4) cooling to 150 ℃ and 175 ℃, adding sulfur, and stirring for 2-4h to obtain the high-strength asphalt finished product. And provides a test method based on normal temperature anti-rutting performance, which comprises the following steps: the product has good anti-rutting capability under the condition of normal temperature, can effectively prevent pavement diseases and prolong the service life of the pavement.
Description
Technical Field
The invention relates to the fields of petroleum refining and chemical industry and the traffic field of petroleum asphalt material application, relates to high-strength asphalt, and particularly relates to high-strength asphalt based on normal-temperature anti-rutting performance.
Background
Rutting is one of the main manifestation forms of early diseases, and the occurrence of rutting diseases is relieved to a certain extent by improving the softening point of the modified asphalt. However, the main technical means for improving the softening point of the modified asphalt is to increase the mixing amount of SBS or add various functional agents, and although the addition of the additives improves the 'apparent index' of the asphalt, the additives deviate from the viscoelastic property, the viscosity-temperature property and the adhesion property with aggregate which the asphalt material should have due to lack of scientific principle guidance, and a plurality of uncontrollable factors appear in the production, paving and rolling processes of the mixture, so that the high-grade product cannot achieve the expected overall effect.
The high-modulus asphalt mixture is adopted to pave the asphalt pavement, which is an effective means for improving the rutting resistance of the pavement, but the high-modulus asphalt mixture used at present mostly refers to the technical standard of hard asphalt in France and a corresponding design method, and the fatigue resistance and the water damage resistance are lost while the modulus is improved.
The existing evaluation means of the anti-rutting effect mostly adopts a high-temperature (more than 60 ℃) rutting factor (G)*The method of/sin delta) > 1.0 mainly focuses on the situation that the asphalt pavement is softened and rutted at hot and high temperature in summer, but has little related research attention on the rutting situation that the environmental temperature is 25-35 ℃ and is commonly used on the asphalt pavement at present.
The research combines the environmental conditions of the pavement and the main disease forms, and produces high-strength asphalt products meeting different anti-rutting functions by customizing and compositely modifying the matrix asphalt according to the concept of pavement structure function design; the anti-rutting effect of the developed product is guaranteed by establishing the anti-rutting index test method at the normal temperature of 25 ℃ and 35 ℃.
Disclosure of Invention
In order to solve the problems, the invention provides high-strength asphalt based on normal-temperature anti-rutting performance and a preparation method thereof.
The technical characteristics are as follows:
(1) the high-strength asphalt comprises the following components in parts by mass: 90-105 parts of No. 25/No. 45 asphalt, 1-10 parts of rubber oil, 1-7 parts of styrene-butadiene-styrene block copolymer (SBS), 3-8 parts of ethylene-vinyl acetate copolymer (EVA) and 0.1-0.3 part of sulfur;
the No. 25/45 road asphalt meets the standard requirements of the hard road petroleum asphalt GB/T38075-2019;
the styrene-butadiene-styrene block copolymer (SBS) adopts a linear SBS modifier;
the rubber oil is petroleum reduced distillate oil in the vacuum distillation process, and the temperature of the rubber oil is 330-540 ℃.
2. The preparation process of the high-strength asphalt comprises the following steps:
(1) melting the three-way reducing extract oil, SBS and EVA;
(2) melting No. 25/45 asphalt at 140-170 ℃;
(3) adding the molten materials of the three-way reducing extraction oil, SBS and EVA, and shearing at the temperature of 160-190 ℃ for 0.5-3 h;
(4) cooling to 150 ℃ and 175 ℃, adding sulfur, and stirring for 2-4h to obtain the high-strength asphalt finished product.
3. Reducing the melting temperature of the three-line extracted oil, SBS and EVA at 140-.
4. The high-strength asphalt based on the normal-temperature anti-rutting performance is characterized in that the rutting factor (G/sin delta) at 35 ℃ is not less than 980kPa, and the rutting factor (G/sin delta) at 25 ℃ is not less than 1680 kPa.
Detailed Description
The present invention is further illustrated by the following examples, which are intended to be purely exemplary and are not intended to limit the scope of the invention, as various equivalent modifications of the invention will become apparent to those skilled in the art after reading the present invention, and fall within the scope of the appended claims.
Example 1
In the indoor test embodiment, the raw materials are weighed according to the following parts by weight:
styrene-butadiene-styrene block copolymer (SBS)3 parts
1.5 portions of rubber oil
Ethylene-vinyl acetate copolymer (EVA)4 parts
No. 45 road asphalt 91.4 parts
0.1 portion of sulfur
The preparation of the high-strength asphalt comprises the following steps:
(1) melting the three-way reduced extract oil, SBS and EVA at 160 deg.C under nitrogen sealing pressure of 1.2Mpa, and mechanically stirring at 500 rpm;
(2) melting No. 45 asphalt at 150 ℃;
(3) adding the melt materials of the three-way reducing extract oil, SBS and EVA, and shearing at 180 ℃ for 0.5 h;
(4) cooling to 150 ℃, adding sulfur, and stirring for 3h to obtain the high-strength asphalt finished product, wherein the technical indexes of the prepared product are shown in table 1.
Example 2
In the indoor test embodiment, the raw materials are weighed according to the following parts by weight:
styrene-butadiene-styrene block copolymer (SBS)4.0 parts
2.0 parts of rubber oil
Ethylene-vinyl acetate copolymer (EVA)3.0 parts
No. 45 road asphalt 90.9 parts
0.1 portion of sulfur
The preparation of the high-strength asphalt comprises the following steps:
(1) melting the three-way reduced extract oil, SBS and EVA at 150 deg.C under nitrogen sealing pressure of 1.1Mpa, and mechanically stirring at 500 rpm;
(2) melting No. 45 asphalt at 150 ℃;
(3) adding the molten materials of the three-way reducing extract oil, SBS and EVA, and shearing at 175 ℃ for 1.0 h;
(4) cooling to 160 ℃, adding sulfur, and stirring for 4 hours to obtain a high-strength asphalt finished product, wherein the technical indexes of the prepared product are shown in table 1.
Example 3
In the indoor test embodiment, the raw materials are weighed according to the following parts by weight:
2.0 parts of styrene-butadiene-styrene block copolymer (SBS)
1.0 part of rubber oil
Ethylene-vinyl acetate copolymer (EVA)4.0 parts
No. 25 road asphalt 92.9 parts
0.1 portion of sulfur
The preparation of the high-strength asphalt comprises the following steps:
(1) melting the three-way reduced extract oil, SBS and EVA at 150 deg.C under nitrogen sealing pressure of 1.1Mpa, and mechanically stirring at 500 rpm;
(2) melting No. 45 asphalt at 150 ℃;
(3) adding the molten materials of the three-way reducing extract oil, SBS and EVA, and shearing at 175 ℃ for 1.0 h;
(4) cooling to 160 ℃, adding sulfur, and stirring for 4 hours to obtain a high-strength asphalt finished product, wherein the technical indexes of the prepared product are shown in table 1.
TABLE 1 high-Strength asphalt test results
Claims (4)
1. A high-strength asphalt based on normal temperature anti-rutting performance and a preparation method thereof are characterized in that: the composition comprises the following components in parts by mass: 90-105 parts of No. 25/No. 45 asphalt, 1-10 parts of rubber oil, 1-7 parts of styrene-butadiene-styrene block copolymer (SBS), 3-8 parts of ethylene-vinyl acetate copolymer (EVA) and 0.1-0.3 part of sulfur;
the No. 25/No. 45 road asphalt meets the standard requirements of the hard road petroleum asphalt GB/T38075-2019;
the styrene-butadiene-styrene block copolymer (SBS) adopts a linear SBS modifier;
the VA content of the ethylene-vinyl acetate copolymer (EVA) is 40%;
the rubber oil is petroleum reduced distillate oil in the vacuum distillation process, and the temperature of the rubber oil is 330-540 ℃.
2. The method for preparing high-strength asphalt according to claim 1, characterized by comprising the following steps:
(1) melting the three-way reducing extract oil, SBS and EVA;
(2) melting No. 25/45 asphalt at 140-170 ℃;
(3) adding the molten materials of the three-way reducing extraction oil, SBS and EVA, and shearing at the temperature of 160-190 ℃ for 0.5-3 h;
(4) cooling to 150 ℃ and 175 ℃, adding sulfur, and stirring for 2-4h to obtain the high-strength asphalt finished product.
3. The preparation method according to claim 2, wherein the melting temperature of the three-wire extract oil, SBS and EVA is reduced to 140-.
4. The high-strength asphalt based on the normal-temperature anti-rutting performance is characterized in that the rutting factor (G/sin delta) at 35 ℃ is not less than 980kPa, and the rutting factor (G/sin delta) at 25 ℃ is not less than 1680 kPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011361106.6A CN112480697A (en) | 2020-11-27 | 2020-11-27 | High-strength asphalt based on normal-temperature anti-rutting performance and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011361106.6A CN112480697A (en) | 2020-11-27 | 2020-11-27 | High-strength asphalt based on normal-temperature anti-rutting performance and preparation method thereof |
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| CN112480697A true CN112480697A (en) | 2021-03-12 |
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| CN202011361106.6A Pending CN112480697A (en) | 2020-11-27 | 2020-11-27 | High-strength asphalt based on normal-temperature anti-rutting performance and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115678289A (en) * | 2021-07-27 | 2023-02-03 | 中国石油化工股份有限公司 | Anti-shedding sulfur asphalt and preparation method and application thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0337282A1 (en) * | 1988-04-13 | 1989-10-18 | Perstorp Components GmbH | Bituminous composition and its uses |
| US5990206A (en) * | 1996-02-28 | 1999-11-23 | Kao Corporation | Asphalt modifier composition and asphalt composition |
| JP2004256663A (en) * | 2003-02-26 | 2004-09-16 | Tokai Carbon Co Ltd | Asphalt binder and paving asphalt mixture |
| CN103897411A (en) * | 2013-12-16 | 2014-07-02 | 广西科中大交通科技有限公司 | Anti-rutting additive of asphalt mixture and preparation method of anti-rutting additive |
| CN104312177A (en) * | 2014-11-07 | 2015-01-28 | 南通通沙沥青科技有限公司 | Track-preventing pitch and preparation method thereof |
| CN105038279A (en) * | 2015-09-07 | 2015-11-11 | 重庆市智翔铺道技术工程有限公司 | Modified asphalt and preparing method thereof |
-
2020
- 2020-11-27 CN CN202011361106.6A patent/CN112480697A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0337282A1 (en) * | 1988-04-13 | 1989-10-18 | Perstorp Components GmbH | Bituminous composition and its uses |
| US5990206A (en) * | 1996-02-28 | 1999-11-23 | Kao Corporation | Asphalt modifier composition and asphalt composition |
| JP2004256663A (en) * | 2003-02-26 | 2004-09-16 | Tokai Carbon Co Ltd | Asphalt binder and paving asphalt mixture |
| CN103897411A (en) * | 2013-12-16 | 2014-07-02 | 广西科中大交通科技有限公司 | Anti-rutting additive of asphalt mixture and preparation method of anti-rutting additive |
| CN104312177A (en) * | 2014-11-07 | 2015-01-28 | 南通通沙沥青科技有限公司 | Track-preventing pitch and preparation method thereof |
| CN105038279A (en) * | 2015-09-07 | 2015-11-11 | 重庆市智翔铺道技术工程有限公司 | Modified asphalt and preparing method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 于祥等: "动态硫化EVA/ SBS复合改性沥青动态力学性能的研究", 《橡胶工业》 * |
| 河北省交通厅公路管理局: "《河北公路建设技术指南》", 31 January 2003, 人民交通出版社 * |
| 金吉海等: "减三糠醛抽出油掺入量对改性沥青性能的影响", 《石化技术与应用》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115678289A (en) * | 2021-07-27 | 2023-02-03 | 中国石油化工股份有限公司 | Anti-shedding sulfur asphalt and preparation method and application thereof |
| CN115678289B (en) * | 2021-07-27 | 2023-09-01 | 中国石油化工股份有限公司 | Anti-drop sulfur asphalt and preparation method and application thereof |
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Application publication date: 20210312 |