CN108659552B - Environment-friendly heat-insulating mixed asphalt and preparation method thereof - Google Patents
Environment-friendly heat-insulating mixed asphalt and preparation method thereof Download PDFInfo
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- CN108659552B CN108659552B CN201710208515.4A CN201710208515A CN108659552B CN 108659552 B CN108659552 B CN 108659552B CN 201710208515 A CN201710208515 A CN 201710208515A CN 108659552 B CN108659552 B CN 108659552B
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- 239000010426 asphalt Substances 0.000 title claims abstract description 57
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 239000000779 smoke Substances 0.000 claims abstract description 16
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 10
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 10
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000008117 stearic acid Substances 0.000 claims abstract description 10
- 239000011159 matrix material Substances 0.000 claims abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 239000004698 Polyethylene Substances 0.000 claims description 11
- 239000010439 graphite Substances 0.000 claims description 11
- 229910002804 graphite Inorganic materials 0.000 claims description 11
- -1 polyethylene Polymers 0.000 claims description 11
- 229920000573 polyethylene Polymers 0.000 claims description 11
- IANQTJSKSUMEQM-UHFFFAOYSA-N 1-benzofuran Chemical compound C1=CC=C2OC=CC2=C1 IANQTJSKSUMEQM-UHFFFAOYSA-N 0.000 claims description 10
- 239000012188 paraffin wax Substances 0.000 claims description 10
- 239000001993 wax Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 239000010692 aromatic oil Substances 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 3
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 2
- 238000004523 catalytic cracking Methods 0.000 claims description 2
- 229920001684 low density polyethylene Polymers 0.000 claims description 2
- 239000004702 low-density polyethylene Substances 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 239000003921 oil Substances 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims 1
- 238000002156 mixing Methods 0.000 abstract description 9
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000000654 additive Substances 0.000 abstract description 3
- 230000000996 additive effect Effects 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 239000003208 petroleum Substances 0.000 abstract description 3
- 238000005096 rolling process Methods 0.000 abstract description 3
- 238000004321 preservation Methods 0.000 abstract description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 239000011384 asphalt concrete Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000004200 microcrystalline wax Substances 0.000 description 1
- 235000019808 microcrystalline wax Nutrition 0.000 description 1
- 239000004209 oxidized polyethylene wax Substances 0.000 description 1
- 235000013873 oxidized polyethylene wax Nutrition 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000003878 thermal aging Methods 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- 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
-
- 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
-
- 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
Landscapes
- 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)
- Compositions Of Macromolecular Compounds (AREA)
- Road Paving Structures (AREA)
Abstract
The invention belongs to the technical field of warm mixing of petroleum asphalt, and particularly relates to environment-friendly heat-preservation mixed asphalt and a preparation method thereof. The environment-friendly warm mix asphalt comprises the following components in parts by weight: 100 parts of matrix asphalt, 0.5-2 parts of wax, 0.5-2 parts of regulator, 0.5-10 parts of smoke suppressant and 1-3 parts of stearic acid. The additive in the environment-friendly warm mix asphalt can effectively reduce the viscosity of asphalt, thereby reducing the mixing, paving and rolling temperatures of the mixture and overcoming the problems of environmental pollution, high energy consumption and the like.
Description
Technical Field
The invention belongs to the technical field of warm mixing of petroleum asphalt, and particularly relates to environment-friendly heat-preservation mixed asphalt and a preparation method thereof.
Background
The asphalt concrete surface layer gradually replaces the cement concrete pavement with the advantages of comfortable driving, good wear resistance, low noise, simple maintenance and the like, and becomes one of the main forms of the highway pavement in China and developed countries.
The traditional hot-mix asphalt mixture has the defects of high mixing temperature and paving temperature, large amount of asphalt smoke generated in the construction process, high harmful gas emission and the like, and causes a plurality of ecological and environmental problems.
The asphalt smoke is mainly volatile organic compounds, benzene substances are strong carcinogenic substances, the smoke problem of the asphalt needs to be solved along with social development and attention of people on environmental protection and safety, the smoke problem of the asphalt cannot be solved fundamentally by the technologies such as emulsified asphalt and liquid asphalt adopted in the prior art, and the performance of the asphalt pavement is reduced.
Disclosure of Invention
The invention provides environment-friendly warm-mixed asphalt and a preparation method thereof, and the additive in the environment-friendly warm-mixed asphalt can effectively reduce the viscosity of asphalt, thereby reducing the mixing, paving and rolling temperatures of a mixture and overcoming the problems of environmental pollution, high energy consumption and the like.
The technical scheme adopted by the invention is as follows:
the environment-friendly heat-insulating mixed asphalt comprises the following components in parts by weight: 100 parts of matrix asphalt, 0.5-2 parts of wax, 0.5-2 parts of regulator, 0.5-10 parts of smoke suppressant and 1-3 parts of stearic acid.
The matrix asphalt is heavy traffic asphalt.
The wax is one or a combination of several of paraffin wax, polyethylene wax and oxidized polyethylene wax, preferably paraffin wax, the paraffin wax is wax (slack wax, refined microcrystalline wax and the like) obtained and refined from petroleum, the melting point is 85-90 ℃, and the density is 0.87-0.92 g/cm3。
The regulator is one or the combination of two of catalytic cracking slurry oil and aromatic oil which are rich in aromatic hydrocarbon.
The smoke suppressant is a combination of at least two of polyethylene, coumarone resin and expandable graphite, and the mass ratio of the resin polyethylene and/or coumarone resin to the expandable graphite is preferably 1: 1-4: 1, the polyethylene is low-density polyethylene with the density of 0.910-0.940 g/cm3And the expansion coefficient of the expandable graphite is more than or equal to 200.
The preparation method of the environment-friendly warm mixing smoke suppressant comprises the following steps: heating the matrix asphalt to a molten state, adding the paraffin, the regulator, the smoke suppressant and the stearic acid, and uniformly stirring.
Preferably, the base asphalt is heated to 110-120 ℃.
Preferably, the mixture is stirred at a constant temperature of 150-170 ℃ for 10-20 minutes.
Compared with the prior art, the invention has the following excellent technical effects:
the regulator and the wax in the environment-friendly warm mix asphalt are used for increasing the compatibility of each component, so that the smoke suppressant can be better compatible with the asphalt, the smoke volatilization in the asphalt is suppressed, and the high-temperature performance of the asphalt can be improved. The expandable graphite begins to expand at a high temperature of more than 200 ℃, and the expanded graphite forms a good heat insulation layer which can effectively insulate heat and oxygen, thereby playing a role in inhibiting smoke. And the interaction of the wax and the stearic acid can effectively reduce the viscosity of the asphalt, so that the asphalt can be constructed at a lower temperature, and the volatilization of asphalt smoke is reduced.
Detailed Description
The invention is further illustrated by the following examples:
blank example
Heating the heavy traffic asphalt No. 70 to be molten, and performing reverse sample analysis.
Example 1
Heating 100 parts of No. 70 heavy traffic asphalt to 110 ℃, adding 2 parts of paraffin, 3 parts of stearic acid, 1.5 parts of polyethylene, 1.5 parts of expandable graphite and 1.5 parts of aromatic oil, and stirring for 10 minutes at the constant temperature of 165 ℃.
Example 2
Heating 100 parts of No. 70 heavy traffic asphalt to 110 ℃, adding 1.5 parts of paraffin, 2 parts of stearic acid, 0.5 part of polyethylene, 0.5 part of expandable graphite and 1 part of aromatic oil, and stirring for 15 minutes at the constant temperature of 160 ℃.
Example 3
Heating 100 parts of No. 70 heavy traffic asphalt to 115 ℃, adding 0.5 part of paraffin, 1 part of stearic acid, 3 parts of polyethylene, 1 part of coumarone resin, 2 parts of expandable graphite and 0.5 part of aromatic oil, and stirring at the constant temperature of 170 ℃ for 20 minutes.
Example 4
Heating 100 parts of No. 70 heavy traffic asphalt to 120 ℃, adding 1 part of paraffin, 3 parts of stearic acid, 4 parts of polyethylene, 1 part of expandable graphite and 2 parts of aromatic oil, and stirring at the constant temperature of 165 ℃ for 20 minutes.
The additive can effectively reduce the viscosity of asphalt, thereby reducing the mixing, paving and rolling temperatures of asphalt mixtures, and overcoming the problems of environmental pollution, high energy consumption, asphalt aging and fading and the like.
Table 1 example test results
As can be seen from the data in Table 1, the asphalt of the invention has lower viscosity at 135 ℃, can effectively reduce the asphalt construction temperature, and has increased viscosity at 80 ℃, which indicates that the asphalt still has good mixing, paving and compacting performances under the condition of reducing the construction temperature, can obviously reduce the heat energy consumption, reduce the emission of harmful gas and dust, and avoid thermal aging and performance attenuation of the asphalt in the mixing process. Meanwhile, the softening point of the asphalt is higher, which shows that the high-temperature stability of the asphalt is obviously improved.
Claims (2)
1. The environment-friendly heat-insulating mixed asphalt is characterized by being prepared from the following raw materials in parts by mass: 100 parts of matrix asphalt, 0.5-2 parts of wax, 0.5-2 parts of regulator, 0.5-10 parts of smoke suppressant and 1-3 parts of stearic acid;
the matrix asphalt is heavy traffic asphalt;
the wax is paraffin;
the regulator is one or the combination of two substances in catalytic cracking oil slurry and aromatic oil which are rich in aromatic hydrocarbon;
the smoke suppressant is one or the combination of two of polyethylene and coumarone resin and expandable graphite;
the mass ratio of the polyethylene and/or coumarone resin to the expandable graphite is 1: 1-4: 1;
the polyethylene is low-density polyethylene with the density of 0.910-0.940 g/cm3The above-mentionedThe expansion coefficient of the expandable graphite is more than or equal to 200;
the preparation method of the environment-friendly warm mix asphalt comprises the following steps: heating the matrix asphalt to a molten state, melting the asphalt, adding the paraffin, the regulator, the smoke suppressant and the stearic acid, and uniformly stirring; stirring at a constant temperature of 150-170 ℃ for 10-20 minutes.
2. The environment-friendly warm mix asphalt according to claim 1, wherein the base asphalt is heated to 110 to 120 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710208515.4A CN108659552B (en) | 2017-03-31 | 2017-03-31 | Environment-friendly heat-insulating mixed asphalt and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710208515.4A CN108659552B (en) | 2017-03-31 | 2017-03-31 | Environment-friendly heat-insulating mixed asphalt and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108659552A CN108659552A (en) | 2018-10-16 |
| CN108659552B true CN108659552B (en) | 2021-10-22 |
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| CN201710208515.4A Active CN108659552B (en) | 2017-03-31 | 2017-03-31 | Environment-friendly heat-insulating mixed asphalt and preparation method thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109439006A (en) * | 2018-11-13 | 2019-03-08 | 青岛冠通市政建设有限公司 | A kind of Environment-friendlylow-temperature low-temperature high-viscosity asphalt and preparation method thereof |
| CN109867971A (en) * | 2019-02-18 | 2019-06-11 | 冯小伟 | A kind of compound suppression fumed oak glue asphalt production process of expanded graphite coumarone indene resin |
| CN111019362A (en) * | 2019-11-21 | 2020-04-17 | 中国水利水电第七工程局有限公司 | Warm mixing agent for asphalt mixture, preparation method and application |
| CN111320420B (en) * | 2020-03-27 | 2021-11-30 | 濮阳光大路桥混凝土有限公司 | Warm-mixed asphalt concrete for energy conservation and consumption reduction |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101817983A (en) * | 2009-02-27 | 2010-09-01 | 深圳市海川实业股份有限公司 | Warm mix flame-retardant modified asphalt and preparation method thereof |
| KR101100415B1 (en) * | 2011-05-24 | 2011-12-30 | 금호석유화학 주식회사 | Medium asphalt using mesophilic additives having anti-peel properties and a method for producing a medium asphalt mixture using the same |
| CN103554927A (en) * | 2013-10-11 | 2014-02-05 | 陕西师范大学 | Compound asphalt warm-mixed viscosity reducer and preparation method thereof |
| CN104559245A (en) * | 2013-10-22 | 2015-04-29 | 中国石油化工股份有限公司 | Warm mix asphalt and preparation method thereof |
| CN105062099A (en) * | 2015-08-07 | 2015-11-18 | 天津天合建岭路桥工程科技有限公司 | Novel warm mix asphalt |
| CN106317518A (en) * | 2015-06-17 | 2017-01-11 | 中国石油化工股份有限公司 | Warm mix agent used for warm mix asphalt, and application method of warm mix agent |
-
2017
- 2017-03-31 CN CN201710208515.4A patent/CN108659552B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101817983A (en) * | 2009-02-27 | 2010-09-01 | 深圳市海川实业股份有限公司 | Warm mix flame-retardant modified asphalt and preparation method thereof |
| KR101100415B1 (en) * | 2011-05-24 | 2011-12-30 | 금호석유화학 주식회사 | Medium asphalt using mesophilic additives having anti-peel properties and a method for producing a medium asphalt mixture using the same |
| CN103554927A (en) * | 2013-10-11 | 2014-02-05 | 陕西师范大学 | Compound asphalt warm-mixed viscosity reducer and preparation method thereof |
| CN104559245A (en) * | 2013-10-22 | 2015-04-29 | 中国石油化工股份有限公司 | Warm mix asphalt and preparation method thereof |
| CN106317518A (en) * | 2015-06-17 | 2017-01-11 | 中国石油化工股份有限公司 | Warm mix agent used for warm mix asphalt, and application method of warm mix agent |
| CN105062099A (en) * | 2015-08-07 | 2015-11-18 | 天津天合建岭路桥工程科技有限公司 | Novel warm mix asphalt |
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| Publication number | Publication date |
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| CN108659552A (en) | 2018-10-16 |
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