CN110903668B - High-temperature-resistant modified asphalt composition and preparation method thereof - Google Patents
High-temperature-resistant modified asphalt composition and preparation method thereof Download PDFInfo
- Publication number
- CN110903668B CN110903668B CN201911314460.0A CN201911314460A CN110903668B CN 110903668 B CN110903668 B CN 110903668B CN 201911314460 A CN201911314460 A CN 201911314460A CN 110903668 B CN110903668 B CN 110903668B
- Authority
- CN
- China
- Prior art keywords
- modified asphalt
- parts
- asphalt
- alumina
- oil
- Prior art date
- 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.)
- Active
Links
Classifications
-
- 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
-
- 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
- C08K2003/023—Silicon
-
- 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
- C08K2003/0812—Aluminium
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- 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
- C08L2205/03—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 belongs to the technical field of modified asphalt, and particularly relates to a high-temperature-resistant modified asphalt composition and a preparation method thereof. The modified asphalt is prepared from the following raw materials in parts by weight: 75-98 parts of asphalt, 2.0-6.0 parts of SBS modifier, 0.05-1.0 part of stabilizer, 0.1-4 parts of naphthenic oil, 0.05-5.0 parts of mineral oil, 0.5-7.0 parts of aromatic oil, 0.01-1.0 part of activated alumina and 0.01-1.0 part of amorphous silica-alumina. The modified asphalt prepared by the invention has the advantages of lower temperature sensitivity, high temperature resistance, high stability, high elasticity and the like, and can improve the service performance of the asphalt pavement under the high-temperature condition, thereby reducing or relieving pavement diseases such as rutting, cracking and the like, and simultaneously ensuring that the asphalt is not easy to separate and the like during the storage period of the pavement construction.
Description
Technical Field
The invention belongs to the technical field of modified asphalt, and particularly relates to a high-temperature-resistant modified asphalt composition and a preparation method thereof.
Background
The continuous increase in automobile holding capacity and truck axle load places higher demands on highways. In addition, the requirements of complex weather conditions in high-temperature and rainy areas in summer on highway construction and maintenance are gradually improved. The rut is one of the common road surface diseases in high temperature or heavy load area, not only can reduce pitch highway surface course intensity, seriously influences the roughness on road surface, influences driving safety, and overcast and rainy day can make the road surface ponding more easily simultaneously, and aggravation road surface water damage further reduces driving travelling comfort or driving safety. In order to improve the high-temperature shear resistance of the asphalt pavement, patent CN106147256A provides a rutting resistant modified asphalt with good performance, which can simultaneously improve the skid resistance and wear resistance of the pavement. The modifier used by the asphalt comprises a defoaming agent, cationic emulsified asphalt powder, azobisisobutyronitrile, guar gum, atactic polypropylene, phenyl salicylate, zirconium dioxide, talcum powder, silicon carbide whisker, alkyl ether magnesium sulfonate and the like. The invention has the disadvantages that the related modifiers are various in types, and part of the modifiers are high in price.
In order to improve the impact load resistance of the asphalt pavement, patent CN106336672A provides a preparation method of modified asphalt. The used modifier comprises 3-7% of petroleum resin, 0.5-1.5% of polyethylene wax, 8-15% of SBS, 0.1-1.5% of naphthenic oil, a stabilizer and the like. And sequentially adding various modifiers into the matrix asphalt at intervals of 1-2 min for high-speed shearing, wherein the softening point of the obtained modified asphalt is as high as 106 ℃, the ductility performance after aging is excellent, the service cycle of the pavement can be prolonged, and the driving comfort is improved. The invention has the disadvantages of larger usage amount of the polymer modifier and higher product cost.
Patent CN 106243748A provides a preparation method of modified asphalt, which can improve the high temperature stability, softening point and bonding ability of asphalt. In the preparation process of the asphalt, matrix asphalt, SBS, waste rubber powder and plastic, a cross-linking agent, a compatilizer, diatomite, carbon black, zinc oxide, talcum powder, an ester solvent, nylon fiber and the like are used. The defects are that the variety of the modifier used by the modified asphalt is more, part of the modifier needs to be pretreated, the ultrasonic process is involved, and the preparation process is complex.
Disclosure of Invention
The invention aims to provide a high-temperature-resistant modified asphalt composition and a preparation method thereof, and the prepared modified asphalt has the advantages of good ductility, high softening point, storage stability and the like, and can ensure the service performance of a pavement under a high-temperature condition.
In order to achieve the purpose, the invention adopts the following technical scheme:
the modified asphalt is prepared from the following raw materials in parts by weight: 75-98 parts of asphalt, 2.0-6.0 parts of SBS modifier, 0.05-1.0 part of stabilizer, 0.1-4 parts of naphthenic oil, 0.05-5.0 parts of mineral oil, 0.5-7.0 parts of aromatic oil, 0.01-1.0 part of activated alumina and 0.01-1.0 part of amorphous silica-alumina.
Wherein the asphalt is No. 70 straight-run asphalt, the saturated component content is 9-20 wt%, the aromatic component content is 41-60 wt%, the colloid content is 10-17 wt%, the asphaltene content is 8-15 wt%, the softening point is 46-48 ℃, the 25 ℃ penetration degree is 65-69, the wax content is less than 2.0wt%, the 10 ℃ ductility is greater than 32 cm, and the flash point is greater than 300 ℃.
The SBS is in a linear or star structure and consists of a PB (polybutadiene) segment and a PS (polystyrene) segment, and the PB to PS block ratio is 70: 30.
The stabilizer mainly comprises sulfur, and the content of the sulfur is not less than 55 wt%.
The main component of the naphthenic oil is one or more of monocycloparaffins and polycycloalkanes, preferably a mixture of two or three of monocycloparaffins, dicycloalkanes, tricycloalkanes and tetracycloalkanes, wherein the content of the dicycloalkanes and the tricycloalkanes is not less than 60 wt%.
The main component of the mineral oil is straight-chain or chain saturated alkane containing branched chains.
The aromatic oil mainly comprises one or more of monocyclic aromatic hydrocarbon and polycyclic aromatic hydrocarbon, preferably two or three of monocyclic aromatic hydrocarbon, bicyclic aromatic hydrocarbon, tricyclic aromatic hydrocarbon and tetracyclic aromatic hydrocarbon, wherein the content of the monocyclic aromatic hydrocarbon, the bicyclic aromatic hydrocarbon, the tricyclic aromatic hydrocarbon and the tetracyclic aromatic hydrocarbon is not less than 65 wt%.
The activated alumina is prepared by high-temperature calcination and activation of alumina precursor crystalline boehmite or pseudo-boehmite, and the specific surface area is 250-400 m2Per g, pore volume of 0.45-0.78 cm3/g。
The amorphous silicon aluminum has the mol ratio of aluminum to silicon of 60:40 or 70:30 and the specific surface area of 350-500 m2A pore volume of 0.90-1.50 cm/g3/g。
The production process of the modified asphalt comprises the following steps:
(1) heating the matrix asphalt to 135-155 ℃;
(2) drying activated alumina and amorphous silica-alumina in vacuum at 120-180 ℃ for 2-5 h, weighing the activated alumina, the amorphous silica-alumina according to the measurement, uniformly mixing the activated alumina, the amorphous silica-alumina with the measured naphthenic oil, mineral oil and aromatic oil, then sequentially adding matrix asphalt into the SBS at intervals of 5-20 min, adjusting the temperature to 170-190 ℃, and shearing by using a high-speed shearing machine at the rotating speed of 3000-10000 r/min, preferably 4000-8000 r/min;
(3) and adding a metered stabilizer after shearing, and then stirring for 1-3 h to complete the preparation of the modified asphalt.
The invention has the following remarkable advantages:
(1) the various oils or additives used in the high-temperature resistant modified asphalt composition prepared by the invention do not relate to complex or fine chemical products with higher purity, and the raw materials are easy to obtain and have lower cost.
(2) According to the preparation method of the modified asphalt, the preparation time of the modified asphalt can be shortened by controlling the addition mode of the raw materials and the technical indexes of time, temperature and the like of each link, so that the production energy consumption is reduced, the prepared modified asphalt has the advantages of good ductility, high softening point, storage stability and the like, and the pavement service performance under the high-temperature condition is guaranteed.
(3) The modified asphalt prepared by the invention has the advantages of lower temperature sensitivity, high temperature resistance, high stability, high elasticity and the like, and can improve the service performance of the asphalt pavement under the high-temperature condition, thereby reducing or relieving pavement diseases such as rutting, cracking and the like, and simultaneously ensuring that the asphalt is not easy to separate and the like during the storage period of the pavement construction.
Detailed Description
For further disclosure, but not limitation, the present invention is described in further detail below with reference to examples.
Example 1
(1) The modified asphalt comprises the following components in parts by mass: 88.2 parts of No. 70 matrix asphalt, 0.1 part of stabilizer, 4.0 parts of linear SBS, 1.5 parts of naphthenic oil, 0.8 part of mineral oil and 4.5 parts of aromatic oil0.7 part of activated alumina and 0.2 part of amorphous silica-alumina. Wherein the specific surface area of the activated alumina is 252 m2Per g, pore volume of 0.47 m3(ii)/g, amorphous silica-alumina specific surface area 476 m2Per g, pore volume of 0.96 cm3/g。
(2) The preparation process of the modified asphalt comprises the following steps: firstly, heating No. 70 matrix asphalt to 140 ℃; respectively weighing and uniformly mixing active alumina, amorphous silica-alumina, naphthenic oil, mineral oil and aromatic oil according to the measurement, and then sequentially adding matrix asphalt into the mixture at an interval of 5-20 min from the measured SBS; controlling the temperature of the asphalt to be 170-180 ℃, and performing high-speed shearing by using a high-speed shearing machine, wherein the rotating speed of the shearing machine is 4000-8000 r/min; and adding a metered stabilizer after shearing, and stirring for 2 hours to complete the preparation of the modified asphalt.
(3) Performance detection
According to road engineering asphalt and asphalt mixture test specification JTG E20-2011, the I-D performance indexes of the modified asphalt provided in this example and the general SBS modified asphalt are compared as follows:
TABLE 1 example 1 modified asphalt Performance index
As can be seen from Table 1, the penetration index of the modified asphalt prepared by the invention is 0.2, and the softening point is as high as 84.9 ℃, which indicates that the modified asphalt has the characteristics of low temperature sensitivity, good high temperature performance and the like. In addition, the elastic recovery rate of the modified asphalt is as high as 98 percent, which shows that the modified asphalt has good deformation resistance and good internal system agglomeration force. The test result of the segregation experiment of the 48h storage stability is only 0.2 ℃, which fully indicates that the modified asphalt has good storage stability.
Comparative example 1: active alumina and amorphous silica-alumina without inorganic additive
(1) The modified asphalt comprises the following components in parts by mass: 89.1 parts of No. 70 matrix asphalt, 0.1 part of stabilizer, 4.0 parts of linear SBS, 1.5 parts of naphthenic oil, 0.8 part of mineral oil and 4.5 parts of aromatic oil.
(2) The production process of the modified asphalt comprises the following steps: firstly, heating No. 70 matrix asphalt to 140 ℃; weighing naphthenic oil, mineral oil and aromatic oil according to the measurement, uniformly mixing, and sequentially adding matrix asphalt to the SBS at intervals of 5-20 min; controlling the temperature of the asphalt to be 170-180 ℃, and performing high-speed shearing by using a high-speed shearing machine, wherein the rotating speed of the shearing machine is 4000-8000 r/min; and adding a metered stabilizer after shearing, and stirring for 2 hours to complete the preparation of the modified asphalt.
(3) Performance detection
According to road engineering asphalt and asphalt mixture test procedure JTG E20-2011, the I-D performance indexes of the modified asphalt and the general SBS modified asphalt provided by the present comparative example are as follows:
TABLE 2 modified asphalt Performance index of comparative example 1
As can be seen from the test results in Table 2, the penetration may increase to 59.3 or even higher without the addition of alumina and amorphous silica-alumina, and thus may not meet the corresponding requirements for asphalt penetration index in JTG E20-2011. The activated alumina and the amorphous silica-alumina can also help to improve the softening point of the modified asphalt, thereby improving the high-temperature service performance of the modified asphalt. In addition, due to the fact that the active alumina and the amorphous silica-alumina have large specific surface areas and pore volumes, the active alumina and the amorphous silica-alumina can better adsorb or stabilize light components in naphthenic oil, mineral oil, aromatic oil and matrix asphalt, so that volatilization loss of external oil components or light components in the matrix asphalt in the preparation process is reduced, SBS is fully swelled to obtain a better dispersion effect, and finally low temperature ductility and storage stability of the modified asphalt are improved.
Comparative example 2: no oil component (naphthenic oil, mineral oil, aromatic oil) and inorganic additive (alumina, amorphous silica-alumina)
(1) The modified asphalt comprises the following components in parts by mass: 95.9 parts of No. 70 matrix asphalt, 0.1 part of stabilizer and 4.0 parts of SBS.
(2) The production process of the modified asphalt comprises the following steps: firstly, heating No. 70 matrix asphalt to 140 ℃; weighing SBS according to the measurement, adding SBS into asphalt, controlling the temperature of asphalt at 170-180 ℃, using high speed shearing machine to shear at high speed, the rotating speed of shearing machine is 4000-8000 r/min; and adding a metered stabilizer after shearing, and then stirring for 3 hours to complete the preparation of the modified asphalt.
(3) Performance detection
According to road engineering asphalt and asphalt mixture test specification JTG E20-2011, the I-D performance indexes of the modified asphalt and the general SBS modified asphalt provided by the comparative example are compared as shown in the following table 2:
TABLE 3 Properties of modified asphalt of comparative example 2
As can be seen from Table 3, the penetration of the modified asphalt was reduced from 70 to 48 without adding oil components (naphthenic oil, mineral oil, aromatic oil) and alumina, amorphous silica-alumina, indicating that the light components in the base asphalt largely enter the SBS internal structure and SBS did not swell sufficiently, resulting in a ductility of only 14.5cm at 5 ℃ for the as-is modified asphalt. Under the condition of no external oil additive, even if the subsequent stirring time is prolonged, the modified asphalt meeting the I-D technical index can not be prepared.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (6)
1. A high-temperature resistant modified asphalt composition is characterized in that: the material is prepared from the following raw materials in parts by weight: 75-98 parts of matrix asphalt, 2.0-6.0 parts of SBS modifier, 0.05-1.0 part of stabilizer, 0.1-4 parts of naphthenic oil, 0.05-5.0 parts of mineral oil, 0.5-7.0 parts of aromatic oil, 0.01-1.0 part of activated alumina and 0.01-1.0 part of amorphous silica-alumina; the preparation method comprises the following steps:
(1) heating the matrix asphalt to 135-155 ℃;
(2) drying activated alumina and amorphous silica-alumina in vacuum at 120-180 ℃ for 2-5 h, weighing the activated alumina, the amorphous silica-alumina according to the measurement, uniformly mixing the activated alumina, the amorphous silica-alumina with the measured naphthenic oil, mineral oil and aromatic oil, then sequentially adding matrix asphalt into the SBS at intervals of 5-20 min, adjusting the temperature to 170-190 ℃, and shearing by using a high-speed shearing machine at the rotating speed of 3000-10000 r/min;
(3) adding a metered stabilizer after shearing, and then stirring for 1-3 h to complete the preparation of the modified asphalt;
the activated alumina is prepared by high-temperature calcination and activation of alumina precursor crystalline boehmite or pseudo-boehmite, and the specific surface area is 250-400 m2Per g, pore volume of 0.45-0.78 cm3/g；
The amorphous silicon aluminum has the mol ratio of aluminum to silicon of 60:40 or 70:30 and the specific surface area of 350-500 m2A pore volume of 0.90-1.50 cm/g3/g；
The matrix asphalt is No. 70 straight-run asphalt, wherein the saturated component content is 9-20 wt%, the aromatic component content is 41-60 wt%, the colloid content is 10-17 wt%, the asphaltene content is 8-15 wt%, the softening point is 46-48 ℃, the penetration at 25 ℃ is 63-69, the wax content is less than 2.0wt%, the ductility at 10 ℃ is greater than 32 cm, and the flash point is greater than 300 ℃.
2. The high temperature resistant modified asphalt composition according to claim 1, wherein:
the SBS modifier is of a linear or star structure and consists of a polybutadiene block PB and a polystyrene block PS, and the block ratio of PB to PS is 70:30 or 60: 40.
3. The high temperature resistant modified asphalt composition according to claim 1, wherein:
the stabilizer mainly comprises sulfur, and the content of the sulfur is not less than 55 wt%.
4. The high temperature resistant modified asphalt composition according to claim 1, wherein:
the naphthenic oil is one or more of monocycloparaffins, dicycloalkanes and polycycloalkanes.
5. The high temperature resistant modified asphalt composition according to claim 1, wherein:
the main component of the mineral oil is straight-chain or chain saturated alkane containing branched chains, and the relative molecular mass is less than 450.
6. The high temperature resistant modified asphalt composition according to claim 1, wherein:
the main component of the aromatic oil is one or a mixture of more of monocyclic aromatic hydrocarbon and polycyclic aromatic hydrocarbon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911314460.0A CN110903668B (en) | 2019-12-19 | 2019-12-19 | High-temperature-resistant modified asphalt composition and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911314460.0A CN110903668B (en) | 2019-12-19 | 2019-12-19 | High-temperature-resistant modified asphalt composition and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110903668A CN110903668A (en) | 2020-03-24 |
| CN110903668B true CN110903668B (en) | 2021-12-07 |
Family
ID=69826754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911314460.0A Active CN110903668B (en) | 2019-12-19 | 2019-12-19 | High-temperature-resistant modified asphalt composition and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110903668B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112679147B (en) * | 2020-05-26 | 2023-05-30 | 唐山天跃建材有限公司 | High-temperature-resistant rut-resistant asphalt mixture |
| CN111995808A (en) * | 2020-08-05 | 2020-11-27 | 江苏中宏环保科技有限公司 | Instant high-adhesion golden asphalt modified material, preparation method and application |
| CN113512296B (en) * | 2021-04-29 | 2022-09-13 | 山东京博石油化工有限公司 | SBS modified asphalt and preparation method thereof |
| CN113882215A (en) * | 2021-10-20 | 2022-01-04 | 中电建冀交高速公路投资发展有限公司 | Method for extracting old asphalt of asphalt pavement |
| CN115895286B (en) * | 2022-11-23 | 2024-04-12 | 山东海韵沥青有限公司 | High-viscosity high-elasticity modified asphalt and preparation method thereof |
| CN115726199A (en) * | 2022-12-09 | 2023-03-03 | 渭南科顺新型材料有限公司 | SBS modified asphalt waterproof coiled material and preparation method and application thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1793235A (en) * | 2005-12-24 | 2006-06-28 | 深圳清华大学研究院 | Asphalt modified mother material and preparation process for modified asphalt thereof |
| CN103374229A (en) * | 2012-04-13 | 2013-10-30 | 中国石油天然气股份有限公司 | Stabilizer for SBS (styrene butadiene styrene) modified asphalt and preparation method thereof |
| CN104212188A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Casting type mixture asphalt material and preparation method thereof |
| CN104845013A (en) * | 2015-05-31 | 2015-08-19 | 湖州华仑助剂科技有限公司 | Method for preparing asphalt modifying assistant |
| CN105419363A (en) * | 2015-12-28 | 2016-03-23 | 常州亚环环保科技有限公司 | Preparation technology of high activity superfine alumina/epoxy resin composite modified asphalt |
| CN105419356A (en) * | 2015-11-27 | 2016-03-23 | 宁波滨海石化有限公司 | Low-temperature-resistant modified asphalt and preparation method thereof |
| CN105647207A (en) * | 2016-03-03 | 2016-06-08 | 中国石油化工股份有限公司 | High-temperature-resistant SBS (styrene butadiene styrene) modified asphalt and preparation method thereof |
| CN106751963A (en) * | 2016-12-08 | 2017-05-31 | 陕西易阳科技有限公司 | A kind of preparation method of modified pitch |
| CN107266919A (en) * | 2017-07-07 | 2017-10-20 | 河海大学 | A kind of stable type rubber and SBS composite modified asphalts and preparation method thereof |
| CN107418229A (en) * | 2017-07-17 | 2017-12-01 | 湖北大学 | A kind of granulated solid pitch and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5465055B2 (en) * | 2010-03-25 | 2014-04-09 | Ｊｘ日鉱日石エネルギー株式会社 | Hydrorefining method for kerosene fraction |
| CN107868478A (en) * | 2017-12-13 | 2018-04-03 | 上海中孚特种油品有限公司 | A kind of environment-friendly rubber softening oil and preparation method thereof |
-
2019
- 2019-12-19 CN CN201911314460.0A patent/CN110903668B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1793235A (en) * | 2005-12-24 | 2006-06-28 | 深圳清华大学研究院 | Asphalt modified mother material and preparation process for modified asphalt thereof |
| CN103374229A (en) * | 2012-04-13 | 2013-10-30 | 中国石油天然气股份有限公司 | Stabilizer for SBS (styrene butadiene styrene) modified asphalt and preparation method thereof |
| CN104212188A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Casting type mixture asphalt material and preparation method thereof |
| CN104845013A (en) * | 2015-05-31 | 2015-08-19 | 湖州华仑助剂科技有限公司 | Method for preparing asphalt modifying assistant |
| CN105419356A (en) * | 2015-11-27 | 2016-03-23 | 宁波滨海石化有限公司 | Low-temperature-resistant modified asphalt and preparation method thereof |
| CN105419363A (en) * | 2015-12-28 | 2016-03-23 | 常州亚环环保科技有限公司 | Preparation technology of high activity superfine alumina/epoxy resin composite modified asphalt |
| CN105647207A (en) * | 2016-03-03 | 2016-06-08 | 中国石油化工股份有限公司 | High-temperature-resistant SBS (styrene butadiene styrene) modified asphalt and preparation method thereof |
| CN106751963A (en) * | 2016-12-08 | 2017-05-31 | 陕西易阳科技有限公司 | A kind of preparation method of modified pitch |
| CN107266919A (en) * | 2017-07-07 | 2017-10-20 | 河海大学 | A kind of stable type rubber and SBS composite modified asphalts and preparation method thereof |
| CN107418229A (en) * | 2017-07-17 | 2017-12-01 | 湖北大学 | A kind of granulated solid pitch and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110903668A (en) | 2020-03-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110903668B (en) | High-temperature-resistant modified asphalt composition and preparation method thereof | |
| CN110951268B (en) | Modified asphalt composition with excellent high and low temperature performance and preparation method thereof | |
| CN100577736C (en) | Asphalt pavement conditioning curing agent and preparation method thereof | |
| CN103788668B (en) | A kind of composite modified asphalt and preparation method thereof | |
| CN103497481B (en) | A kind of chromatic bituminous cement and preparation method thereof | |
| CN102153874A (en) | Composite modified asphalt and preparation method thereof | |
| CN1208393C (en) | Polymer emulsified and re-cross-linked asphalt colloid mixture and its preparing process | |
| CN100577737C (en) | Asphalt pavement curing agent and preparation method thereof | |
| KR20120086630A (en) | Mastic asphalt compositions and preparation method thereof | |
| CN102174265B (en) | Anti-rutting additive with high modulus and high strength as well as preparation method and applications thereof | |
| CN105801006B (en) | Asphalt for heavy traffic road and preparation method thereof | |
| CN103289423A (en) | Cold-mix asphalt, preparation method thereof, mixture containing asphalt and application | |
| CN108298871B (en) | Asphalt mixture and preparation method thereof | |
| CN102702600A (en) | Environment-friendly asphalt pavement anti-rut agent and preparation method thereof | |
| CN108047735B (en) | Low rolling resistance modified asphalt and preparation method thereof | |
| CN108164189B (en) | Low rolling resistance modified asphalt mixture and preparation method thereof | |
| CN103360774A (en) | Asphaltized rubber modified asphalt and preparation method thereof | |
| CN110564168B (en) | Modified asphalt material and preparation method thereof | |
| CN110903663A (en) | High-strength waste rubber-plastic modified asphalt | |
| CN111635166A (en) | Mix proportion design method for warm-mixed SBS ultrathin wearing layer asphalt mixture | |
| CN107022200A (en) | Modified pitch of Rut resistance and preparation method thereof under thermal extremes fully loaded transportation condition | |
| CN1289801A (en) | Process for preparing polymer-asphalt composition | |
| CN105271898A (en) | Bituminous pavement modified anti-rut agent and preparation method therefor | |
| CN112852176B (en) | High-modulus asphalt and preparation method thereof | |
| CN114806200A (en) | High-performance warm-mix special asphalt based on in-situ thermal regeneration and mixture thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |