CN111334057A - Special asphalt for treating asphalt surface by layer-paving method and preparation method thereof - Google Patents
Special asphalt for treating asphalt surface by layer-paving method and preparation method thereof Download PDFInfo
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- CN111334057A CN111334057A CN202010240967.2A CN202010240967A CN111334057A CN 111334057 A CN111334057 A CN 111334057A CN 202010240967 A CN202010240967 A CN 202010240967A CN 111334057 A CN111334057 A CN 111334057A
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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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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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
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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
- C08L2555/00—Characteristics of bituminous mixtures
- C08L2555/40—Mixtures based upon bitumen or asphalt containing functional additives
- C08L2555/60—Organic non-macromolecular ingredients, e.g. oil, fat, wax or natural dye
- C08L2555/70—Organic non-macromolecular ingredients, e.g. oil, fat, wax or natural dye from natural non-renewable resources
- C08L2555/74—Petrochemicals other than waxes, e.g. synthetic oils, diesel or other fuels, hydrocarbons, halogenated or otherwise functionalized hydrocarbons
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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
- C08L2555/00—Characteristics of bituminous mixtures
- C08L2555/40—Mixtures based upon bitumen or asphalt containing functional additives
- C08L2555/80—Macromolecular constituents
- C08L2555/84—Polymers comprising styrene, e.g., polystyrene, styrene-diene copolymers or styrene-butadiene-styrene copolymers
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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
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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 application relates to special asphalt for treating asphalt surface by a layer-paving method and a preparation method thereof. The invention discloses a special asphalt for treating the asphalt surface by a layer paving method, which can ensure road performance and meet the requirements of layer paving construction by conforming indexes such as penetration, softening point, ductility, thixotropic temperature and the like to standards, and comprises the following components in percentage by mass: 85-90 parts of asphalt, 10-13 parts of modifier, 0.5-1 part of cross-linking agent and 1-2 parts of carbon black; the asphalt is No. 70 road petroleum asphalt, No. 90 road petroleum asphalt or No. 100 road petroleum asphalt; the modifier is prepared from swelling oil and a styrene-butadiene-styrene block copolymer according to a mass ratio of 5-7: 3-5; the crosslinking agent is prepared from precipitated sulfur and an accelerator according to a mass ratio of 3-5: 5 to 7.
Description
Technical Field
The invention relates to asphalt and a preparation method thereof, in particular to special asphalt for treating the surface of asphalt by a layer paving method, which can ensure road performance and meet the requirements of layer paving construction by conforming indexes such as penetration, softening point, ductility, rotary viscosity, thixotropic temperature and the like to standards.
Background
The asphalt surface treatment is implemented by using asphalt and aggregate according to a layer-by-layer paving or mixing method, and its thickness is less than 3cm, and it is mainly used for protecting non-asphalt bearing layer and resisting wear. The surface treatment of the asphalt by the layer-paving method is suitable for the surface layer of a three-level road and a four-level road, and is a novel pavement repairing technology which is started in recent years, the asphalt can be divided into a single layer, a double layer and three layers according to different times of pouring asphalt and spreading aggregate, the thickness of the single layer is 10-15 mm, the thickness of the double layer is 15-25 mm, and the thickness of the three layers is 25-30 mm. Because the surface of the asphalt is treated to be thin and basically treated by the warm-mixing technique, additives for reducing viscosity, such as montan wax, sasobi wax, polyolefin wax and Fischer-Tropsch wax, organic acids such as stearic acid and surfactants such as fatty alcohol amide, are often added to the asphalt at present. The low cohesion of the additives used tends to reduce the road-making properties at the surface of the asphalt by means of layer-laying. Therefore, in order to ensure road performance, rapid construction (completed before asphalt is coagulated) is partially adopted, but the single-layer thickness is at least 20mm, and the labor intensity and the manufacturing cost are high.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art and provides the special asphalt for treating the surface of the asphalt by the layer paving method and the preparation method thereof, wherein the indexes such as penetration, softening point, ductility, rotary viscosity, thixotropic temperature and the like all meet the standard, so that the pavement performance can be ensured and the requirement of layer paving construction can be met.
The technical solution of the invention is as follows: the special asphalt for treating the asphalt surface by a layer-paving method is characterized by comprising the following components in percentage by mass: 85-90 parts of asphalt, 10-13 parts of modifier, 0.5-1 part of cross-linking agent and 1-2 parts of carbon black; the asphalt is No. 70 road petroleum asphalt, No. 90 road petroleum asphalt or No. 100 road petroleum asphalt; the modifier is prepared from swelling oil and a styrene-butadiene-styrene block copolymer according to a mass ratio of 5-7: 3-5; the crosslinking agent is prepared from precipitated sulfur and an accelerator according to a mass ratio of 3-5: 5 to 7.
The swelling oil is heavy aromatic rubber oil, naphthenic oil, furfural extract oil or light filling oil; the styrene-butadiene-styrene block copolymer is SBSYH791, SBSYH792, SBS101 or SBS 4303; the accelerator is zinc oxide, magnesium oxide, lead oxide, a phenolic vulcanization accelerator H, a guanidine vulcanization accelerator D or thiuram; the carbon black is reinforcing carbon black or wear-resistant carbon black.
A preparation method of the special asphalt for treating the asphalt surface by the layer-paving method sequentially comprises the following steps:
a. uniformly stirring swelling oil, a styrene-butadiene-styrene block copolymer modifier and carbon black at 120-160 ℃ to prepare a mixture;
b. and (3) uniformly stirring the mixture and the asphalt at the temperature of 100-130 ℃, adding the precipitated sulfur and the accelerator, and continuously stirring and reacting for 30 minutes at the temperature of 100-130 ℃.
According to the invention, the styrene-butadiene-styrene block copolymer which belongs to a non-polar substance and the swelling oil are dissolved, so that the micromolecule swelling oil is filled between styrene-butadiene-styrene block copolymer molecules, the strength of molecular bond crosslinking of the styrene-butadiene-styrene block copolymer is increased, preparation is provided for the next low crosslinking density reaction, and meanwhile, the swelling oil with low viscosity can reduce the penetration degree and the thixotropic temperature of the asphalt. The indexes of penetration, softening point, ductility, rotational viscosity, thixotropic temperature and the like of the invention all meet the standard, thus ensuring road performance and meeting the requirements of layer paving construction and overcoming the problems of high labor intensity and high manufacturing cost in rapid construction.
Detailed Description
Example 1:
a. stirring 68 parts by weight of aromatic rubber oil, 38 parts by weight of SBSYH792 (styrene-butadiene-styrene block copolymer) and 2 parts by weight of wear-resistant carbon black uniformly at 130 ℃ to prepare a mixture;
b. and uniformly stirring the mixture and 880 parts by mass of No. 90 road petroleum asphalt at 110 ℃, adding 0.3 part by mass of precipitated sulfur and 0.7 part by mass of thiuram, and continuously stirring and reacting for 30 minutes.
Example 2:
a. 60 parts by mass of naphthenic oil, 49 parts by mass of SBSYH791 (styrene-butadiene-styrene block copolymer) and 1 part by mass of reinforcing carbon black are uniformly stirred at 120 ℃ to prepare a mixture;
b. and uniformly stirring the mixture and 900 parts by mass of No. 100 road petroleum asphalt at 100 ℃, adding 0.25 part by mass of precipitated sulfur and 0.25 part by mass of zinc oxide, and continuously stirring and reacting for 30 minutes at 105 ℃.
Example 3:
a. uniformly stirring 50 parts by mass of furfural extract oil, 50 parts by mass of SBS101 (styrene-butadiene-styrene block copolymer) and 1 part by mass of reinforcing carbon black at 150 ℃ to prepare a mixture;
b. and uniformly stirring the mixture and 850 parts by mass of No. 70 road petroleum asphalt at 130 ℃, adding 0.3 part by mass of precipitated sulfur and 0.3 part by mass of phenolic vulcanization accelerator H, and continuously stirring and reacting for 30 minutes at 115 ℃.
The results of experiments with modified asphalt and coarse aggregate prepared according to examples 1, 2, 3 of the present invention were as follows:
1. example 1 basic test indexes of modified asphalt are shown in Table 1
TABLE 1
2. Anti-peeling test
In the embodiments 1, 2 and 3 of the present invention, samples 1, 2 and 3 are respectively obtained, and according to the experiment of the surface adhesion between T0654-2011 asphalt and coarse aggregate in JTG E20-2011 of road engineering asphalt and asphalt mixture test specification, samples 1, 2 and 3 all meet the standard requirements.
3. Mixture gradation test
In the embodiments 1, 2 and 3 of the invention, OGFC-10 type mixture grading design is adopted, and screening results are shown in Table 2 according to the grading design requirements of the mixtures of the drainage type wearing layer of road asphalt pavement construction technical Specification JTG F40-2004 grading.
TABLE 2
Mesh opening mm | 13.2 | 9.5 | 4.75 | 2.36 | 1.18 | 0.6 | 0.3 | 0.075 |
The required passing percentage% | 100 | 90-100 | 50-70 | 10-22 | 6-18 | 4-15 | 3-12 | 2-6 |
Actual measured passing percentage% | 100 | 94.3 | 62.5 | 13.5 | 7.5 | 8.8 | 5.3 | 3.3 |
4. Test of mixture Properties
The test is carried out according to JTGE20-2011< T0702-2011 compaction method in test procedures of road engineering asphalt and asphalt mixture to form the special asphalt mixture for treating the surface layer of the asphalt pavement by a layer-paving method, the mixing temperature is 120-140 ℃, the compaction temperature is 90-105 ℃, and the test results are shown in Table 3.
TABLE 3
And (4) conclusion: the experimental data of the embodiments 1, 2 and 3 of the invention completely meet the standard requirements.
Claims (3)
1. The special asphalt for treating the asphalt surface by a layer-paving method is characterized by comprising the following components in percentage by mass: 85-90 parts of asphalt, 10-13 parts of modifier, 0.5-1 part of cross-linking agent and 1-2 parts of carbon black; the asphalt is No. 70 road petroleum asphalt, No. 90 road petroleum asphalt or No. 100 road petroleum asphalt; the modifier is prepared from swelling oil and a styrene-butadiene-styrene block copolymer according to a mass ratio of 5-7: 3-5; the crosslinking agent is prepared from precipitated sulfur and an accelerator according to a mass ratio of 3-5: 5 to 7.
2. The special asphalt for treating the surface of the asphalt by a layer-laying method according to claim 1, wherein the swelling oil is heavy aromatic rubber oil, naphthenic oil, furfural extract oil or light extender oil; the styrene-butadiene-styrene block copolymer is SBSYH791, SBSYH792, SBS101 or SBS 4303; the accelerator is zinc oxide, magnesium oxide, lead oxide, a phenolic vulcanization accelerator H, a guanidine vulcanization accelerator D or thiuram; the carbon black is reinforcing carbon black or wear-resistant carbon black.
3. A method for preparing a special asphalt for treating the surface of a layered asphalt according to claim 1, which comprises the following steps in sequence:
a. uniformly stirring swelling oil, a styrene-butadiene-styrene block copolymer modifier and carbon black at 120-160 ℃ to prepare a mixture;
b. and (3) uniformly stirring the mixture and the asphalt at the temperature of 100-130 ℃, adding the precipitated sulfur and the accelerator, and continuously stirring and reacting for 30 minutes at the temperature of 100-130 ℃.
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CN202010240967.2A CN111334057A (en) | 2020-03-31 | 2020-03-31 | Special asphalt for treating asphalt surface by layer-paving method and preparation method thereof |
CN202210169994.4A CN114525038A (en) | 2020-03-31 | 2020-03-31 | Special asphalt and preparation method and application thereof |
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CN202010240967.2A CN111334057A (en) | 2020-03-31 | 2020-03-31 | Special asphalt for treating asphalt surface by layer-paving method and preparation method thereof |
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Citations (7)
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CN102993755A (en) * | 2011-09-14 | 2013-03-27 | 路翔股份有限公司 | Modified asphalt, its preparation method, and asphalt concrete |
CN104212188A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Pouring type mixture asphalt material and preparation method thereof |
CN106633966A (en) * | 2017-01-16 | 2017-05-10 | 中国海洋石油总公司 | Modified asphalt for ultra-thin wearing course and preparation method of modified asphalt |
CN107739518A (en) * | 2017-10-25 | 2018-02-27 | 中石油燃料油有限责任公司研究院 | A kind of cast asphalt concrete modified pitch and preparation method thereof |
CN108948754A (en) * | 2017-05-17 | 2018-12-07 | 交通运输部公路科学研究所 | A kind of special asphalt, its mixture and application for heavily loaded porous pavement making |
CN109777134A (en) * | 2019-01-31 | 2019-05-21 | 武汉市市政建设集团有限公司 | A kind of high-modulus warm-mixed asphalt additive and its preparation method and application |
CN110628230A (en) * | 2019-09-23 | 2019-12-31 | 西安嘉程建设科技有限公司 | Environment-friendly high-viscosity high-elasticity surface treatment material and preparation method thereof |
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2020
- 2020-03-31 CN CN202010240967.2A patent/CN111334057A/en active Pending
- 2020-03-31 CN CN202210169994.4A patent/CN114525038A/en active Pending
Patent Citations (7)
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CN102993755A (en) * | 2011-09-14 | 2013-03-27 | 路翔股份有限公司 | Modified asphalt, its preparation method, and asphalt concrete |
CN104212188A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Pouring type mixture asphalt material and preparation method thereof |
CN106633966A (en) * | 2017-01-16 | 2017-05-10 | 中国海洋石油总公司 | Modified asphalt for ultra-thin wearing course and preparation method of modified asphalt |
CN108948754A (en) * | 2017-05-17 | 2018-12-07 | 交通运输部公路科学研究所 | A kind of special asphalt, its mixture and application for heavily loaded porous pavement making |
CN107739518A (en) * | 2017-10-25 | 2018-02-27 | 中石油燃料油有限责任公司研究院 | A kind of cast asphalt concrete modified pitch and preparation method thereof |
CN109777134A (en) * | 2019-01-31 | 2019-05-21 | 武汉市市政建设集团有限公司 | A kind of high-modulus warm-mixed asphalt additive and its preparation method and application |
CN110628230A (en) * | 2019-09-23 | 2019-12-31 | 西安嘉程建设科技有限公司 | Environment-friendly high-viscosity high-elasticity surface treatment material and preparation method thereof |
Non-Patent Citations (1)
Title |
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张登良: "《沥青与沥青混合料》", 30 June 1993, 人民交通出版社 * |
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Application publication date: 20200626 |