CN110818322B - Low-heat-capacity anti-cracking municipal pavement asphalt mixing material - Google Patents
Low-heat-capacity anti-cracking municipal pavement asphalt mixing material Download PDFInfo
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- CN110818322B CN110818322B CN201910940126.XA CN201910940126A CN110818322B CN 110818322 B CN110818322 B CN 110818322B CN 201910940126 A CN201910940126 A CN 201910940126A CN 110818322 B CN110818322 B CN 110818322B
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- asphalt
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- fiber
- mixture
- asphalt mixture
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Classifications
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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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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
- E01C7/182—Aggregate or filler materials, except those according to E01C7/26
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
- E01C7/22—Binder incorporated in hot state, e.g. heated bitumen
-
- 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
-
- 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
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
Abstract
The invention belongs to the technical field of asphalt mixing materials for road engineering, and particularly relates to a low-heat-capacity anti-cracking municipal pavement asphalt mixing material. The low-heat-capacity anti-cracking municipal pavement asphalt mixture comprises the following components: 3.2-8.3% of SBS polymer modified asphalt, 2.0-5.0% of composite fiber, 74.8-81.7% of mineral aggregate and 0.5-6.0% of filler. According to the low-heat-capacity anti-cracking municipal pavement asphalt mixture, the composite fibers are combined with asphalt, so that on one hand, crack expansion is retarded, on the other hand, the fibers enable the asphalt to be in a relatively stable state, the high-temperature stability of the asphalt mixture is improved, and the effects of reinforcement, stability and toughening are exerted. In addition, the crack resistance of the asphalt mixture is improved by properly increasing the amount of asphalt and the compactness of the asphalt mixture gradation to form the asphalt mixture with low heat capacity.
Description
Technical Field
The invention belongs to the technical field of asphalt mixing materials for road engineering, and particularly relates to a low-heat-capacity anti-cracking municipal pavement asphalt mixing material.
Background
The cracking of the asphalt pavement in the service life is a common problem in all countries in the world, the asphalt pavement can generate cracks due to the action of temperature stress in areas with suddenly reduced temperature or large temperature difference, the low-temperature shrinkage cracking is very common in northern areas in China, the generation of the low-temperature shrinkage cracking seriously harms the service life and the quality of the pavement, and the low-temperature shrinkage cracking is one of the main damage forms of the asphalt pavement; the reason for influencing the cracking of the asphalt pavement is related to the composition of the asphalt mixture, the thickness of an asphalt film, the traffic volume, climate factors and the like besides the main role of the properties of the asphalt. Because the actual pavement cracks are generated for a plurality of reasons, measures for inhibiting or slowing down the generation of the asphalt pavement cracks are still in the test and exploration processes at home and abroad, and the currently adopted main methods include the following methods: increasing the thickness of an asphalt layer, arranging a broken stone crack relieving layer, arranging geotextile, geogrid, modified asphalt felt, a steel wire mesh or a modified (rubber) asphalt stress absorbing film and the like between an asphalt overlay and a cement concrete pavement slab. The above solutions can only solve the crack resistance of a certain aspect, so that the effect of suppressing the reflection cracks is not prominent after engineering application, and the road surface cracks tend to appear earlier than expected. There is a strong need in the art to provide a bituminous mixture that is effective in inhibiting the development and propagation of cracks in road surfaces.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a low-heat-capacity anti-cracking municipal pavement asphalt mixture, which is formed by properly increasing the using amount of asphalt and the compactness of asphalt gradation so as to improve the crack resistance of the asphalt mixture.
The technical scheme adopted by the invention is as follows: the invention provides a low-heat-capacity anti-cracking municipal pavement asphalt mixture, which comprises the following components: SBS polymer modified asphalt, composite fiber, mineral aggregate and filler; the percentage content of the SBS polymer modified asphalt in the asphalt mixture is 3.2-8.3%; the percentage content of the composite fiber in the asphalt mixture is 2.0-5.0%; the percentage content of the mineral aggregate in the asphalt mixture is 74.8-81.7%; the percentage content of the filler in the asphalt mixture is 0.5-6.0%.
Preferably, the percentage content of the SBS polymer modified asphalt in the asphalt mixture is 4.0-6.0%.
Further, the SBS polymer modified asphalt is prepared from the following raw materials in parts by weight: 100 parts of asphalt, 4-10 parts of SBS polymer modifier, 2.5-3.5 parts of compatilizer and 0.1-0.2 part of special stabilizer.
Further, the compatilizer is naphthenic base distillate oil or naphthenic base rubber oil.
Further, the special stabilizer is prepared from the following raw materials in parts by weight: 60-70 parts of sulfur, 2.5-4 parts of phosphate, 1-2 parts of rubber powder and 6-8 parts of light calcium carbonate
Preferably, the percentage content of the composite fiber in the asphalt mixture is 2.5-3.5%.
Further, the composite fiber comprises 33-40% of glass fiber, 22-29% of polyester fiber and 27-38% of polyacrylonitrile fiber.
Furthermore, the glass fiber is roving glass fiber with the length of 30-120 mm; the length of the polyester fiber is 6-10 mm; the length of the polyacrylonitrile fiber is 1-10 mm.
Further, the mineral aggregate meets the following grading requirements: when mineral aggregate passes through meshes of 19.0, 16.0, 13.2, 9.5, 4.75, 2.36, 1.18, 0.6, 0.3, 0.15 and 0.075 mm, the mass passage rates are respectively 100%, 95% -98%, 75% -90%, 58% -78%, 42% -63%, 32% -50%, 22% -37%, 16% -28%, 11% -21%, 7% -15% and 4% -8%; the percentage content of the mineral aggregate in the asphalt mixture is 74.8-81.0%.
Further, the filler is ground limestone powder, cement or a mixture of the ground limestone powder and the cement; the percentage content of the filler in the asphalt mixture is 2.0-4.2%.
The invention has the beneficial effects that:
according to the low-heat-capacity anti-cracking municipal pavement asphalt mixture, the composite fibers are combined with asphalt, so that on one hand, the crack expansion is retarded; on the other hand, the composite fiber enables the asphalt to be in a relatively stable state, improves the high-temperature stability of the asphalt mixture and fully plays the roles of strengthening, stabilizing and toughening. In addition, the crack resistance of the asphalt mixture is improved by reasonably increasing the using amount of asphalt and the compactness of the asphalt mixture gradation to form the asphalt mixture with low heat capacity. The low-heat-capacity anti-cracking municipal pavement asphalt mixture has reasonable mineral aggregate grading and asphalt consumption, and good production, construction and workability, and the pavement manufactured by the asphalt mixture has the characteristics of high strength and good low-heat-capacity anti-cracking performance, and can meet the requirements of municipal pavements.
Detailed Description
The invention will be further elucidated by means of several specific examples, which are intended to be illustrative only and not limiting.
Example 1:
a low heat capacity crack control municipal road surface bituminous mixture, includes following component: SBS polymer modified asphalt, composite fiber, mineral aggregate and filler.
The percentage content of the SBS polymer modified asphalt in the asphalt mixture is 6.0%.
The SBS polymer modified asphalt is prepared from the following raw materials in parts by weight: 100 parts of asphalt, 4-10 parts of SBS polymer modifier, 2.5-3.5 parts of compatilizer and 0.1-0.2 part of special stabilizer.
The compatilizer is naphthenic base distillate oil or naphthenic base rubber oil.
The special stabilizer is prepared from the following raw materials in parts by weight: 60-70 parts of sulfur, 2.5-4 parts of phosphate, 1-2 parts of rubber powder and 6-8 parts of light calcium carbonate
The percentage content of the composite fiber in the asphalt mixture is 4.5%.
The composite fiber comprises glass fiber, polyester fiber and polypropylene fiber, wherein the content of the glass fiber is 40%, the content of the polyester fiber is 26% and the content of the polyacrylonitrile fiber is 34%.
The glass fiber is twistless roving type glass fiber, and the length of the fiber is 30-120 mm; the length of the polyester fiber is 6-10 mm; the length of the polyacrylonitrile fiber is 1-10 mm.
The mineral aggregate meets the following grading requirements: when the mineral aggregate passes through meshes of 19.0, 16.0, 13.2, 9.5, 4.75, 2.36, 1.18, 0.6, 0.3, 0.15 and 0.075 mm, the mass passing rates are respectively 100%, 98%, 90%, 78%, 63%, 50%, 37%, 28%, 21%, 15% and 8%; the percentage content of the mineral aggregate in the asphalt mixture is 74.8-81.0%.
The filler is ground limestone powder, cement or a mixture of the ground limestone powder and the cement; the percentage content of the filler in the asphalt mixture is 4.2 percent
Example 2:
a low heat capacity crack control municipal road surface bituminous mixture, includes following component: SBS polymer modified asphalt, composite fiber, mineral aggregate and filler.
The percentage content of the SBS polymer modified asphalt in the asphalt mixture is 5.0%.
The SBS polymer modified asphalt is prepared from the following raw materials in parts by weight: 100 parts of asphalt, 4-10 parts of SBS polymer modifier, 2.5-3.5 parts of compatilizer and 0.1-0.2 part of special stabilizer.
The compatilizer is naphthenic base distillate oil or naphthenic base rubber oil.
The special stabilizer is prepared from the following raw materials in parts by weight: 60-70 parts of sulfur, 2.5-4 parts of phosphate, 1-2 parts of rubber powder and 6-8 parts of light calcium carbonate
The percentage content of the composite fiber in the asphalt mixture is 3.5%.
The composite fiber comprises glass fiber, polyester fiber and polypropylene fiber, wherein the content of the glass fiber is 40%, the content of the polyester fiber is 26% and the content of the polyacrylonitrile fiber is 34%.
The glass fiber is twistless roving type glass fiber, and the length of the fiber is 30-120 mm; the length of the polyester fiber is 6-10 mm; the length of the polyacrylonitrile fiber is 1-10 mm.
The mineral aggregate meets the following grading requirements: when the mineral aggregate passes through meshes of 19.0, 16.0, 13.2, 9.5, 4.75, 2.36, 1.18, 0.6, 0.3, 0.15 and 0.075 mm, the mass passing rates are respectively 100%, 97%, 83%, 68%, 52%, 43%, 30%, 22%, 16%, 11% and 6%; the percentage content of the mineral aggregate in the asphalt mixture is 74.8-81.0%.
The filler is ground limestone powder, cement or a mixture of the ground limestone powder and the cement; the percentage content of the filler in the asphalt mixture is 3.1 percent
Example 3:
a low heat capacity crack control municipal road surface bituminous mixture, includes following component: SBS polymer modified asphalt, composite fiber, mineral aggregate and filler.
The percentage content of the SBS polymer modified asphalt in the asphalt mixture is 4.0%.
The SBS polymer modified asphalt is prepared from the following raw materials in parts by weight: 100 parts of asphalt, 4-10 parts of SBS polymer modifier, 2.5-3.5 parts of compatilizer and 0.1-0.2 part of special stabilizer.
The compatilizer is naphthenic base distillate oil or naphthenic base rubber oil.
The special stabilizer is prepared from the following raw materials in parts by weight: 60-70 parts of sulfur, 2.5-4 parts of phosphate, 1-2 parts of rubber powder and 6-8 parts of light calcium carbonate
The percentage content of the composite fiber in the asphalt mixture is 2.5%.
The composite fiber comprises glass fiber, polyester fiber and polypropylene fiber, wherein the content of the glass fiber is 40%, the content of the polyester fiber is 26% and the content of the polyacrylonitrile fiber is 34%.
The glass fiber is twistless roving type glass fiber, and the length of the fiber is 30-120 mm; the length of the polyester fiber is 6-10 mm; the length of the polyacrylonitrile fiber is 1-10 mm.
The mineral aggregate meets the following grading requirements: when mineral aggregates pass through meshes of 19.0, 16.0, 13.2, 9.5, 4.75, 2.36, 1.18, 0.6, 0.3, 0.15 and 0.075 mm, the mass passing rates are respectively 100%, 95%, 75%, 58%, 42%, 32%, 22%, 16%, 11%, 7% and 4%; (ii) a The percentage content of the mineral aggregate in the asphalt mixture is 74.8-81.0%.
The filler is ground limestone powder, cement or a mixture of the ground limestone powder and the cement; the percentage content of the filler in the asphalt mixture is 2.0 percent
The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.
Claims (1)
1. The utility model provides a low heat capacity crack control municipal road surface bituminous mixture which characterized in that: comprises the following components: SBS polymer modified asphalt, composite fiber, mineral aggregate and filler;
the percentage content of the SBS polymer modified asphalt in the asphalt mixture is 4.0-6.0%; the SBS polymer modified asphalt is prepared from the following raw materials in parts by weight: 100 parts of asphalt, 4-10 parts of SBS polymer modifier, 2.5-3.5 parts of compatilizer and 0.1-0.2 part of special stabilizer; the compatilizer is naphthenic base distillate oil or naphthenic base rubber oil; the special stabilizer is prepared from the following raw materials in parts by weight: 60-70 parts of sulfur, 2.5-4 parts of phosphate, 1-2 parts of rubber powder and 6-8 parts of light calcium carbonate;
the percentage content of the composite fiber in the asphalt mixture is 2.5-3.5%; the composite fiber comprises 33-40% of glass fiber, 22-29% of polyester fiber and 27-38% of polyacrylonitrile fiber; the glass fiber is twistless roving type glass fiber, and the length of the fiber is 30-120 mm; the length of the polyester fiber is 6-10 mm; the length of the polyacrylonitrile fiber is 1-10 mm;
the percentage content of the mineral aggregate in the asphalt mixture is 74.8-81.0%; the mineral aggregate meets the following grading requirements: when mineral aggregate passes through meshes of 19.0, 16.0, 13.2, 9.5, 4.75, 2.36, 1.18, 0.6, 0.3, 0.15 and 0.075 mm, the mass passage rates are respectively 100%, 95% -98%, 75% -90%, 58% -78%, 42% -63%, 32% -50%, 22% -37%, 16% -28%, 11% -21%, 7% -15% and 4% -8%;
the percentage content of the filler in the asphalt mixture is 2.0-4.2%; the filler is ground limestone powder, cement or a mixture of the ground limestone powder and the cement.
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| CN201910940126.XA CN110818322B (en) | 2019-09-30 | 2019-09-30 | Low-heat-capacity anti-cracking municipal pavement asphalt mixing material |
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| CN201910940126.XA CN110818322B (en) | 2019-09-30 | 2019-09-30 | Low-heat-capacity anti-cracking municipal pavement asphalt mixing material |
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| CN110818322B true CN110818322B (en) | 2022-04-12 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002088439A1 (en) * | 2001-04-25 | 2002-11-07 | W.R. Grace & Co.-Conn. | Highly dispersible reinforcing polymeric fibers |
| CN101173104A (en) * | 2007-10-19 | 2008-05-07 | 武汉理工大学 | Method for producing damping porous denoise tunnel asphalt covering material |
| CN101445338A (en) * | 2008-11-27 | 2009-06-03 | 武汉理工大学 | Method for producing wet-mixing, skid-resistance and noise-reduction asphalt road surface material |
| CN103669152A (en) * | 2013-11-04 | 2014-03-26 | 沈阳市政集团有限公司 | Road surface construction method of ultrathin stone mastic asphalt mixture |
| CN103771766A (en) * | 2013-12-27 | 2014-05-07 | 上海浦东路桥建设股份有限公司 | Asphalt mixture with capability of recovering deformation by being heated and preparation method of asphalt mixture |
| CN105330202A (en) * | 2015-11-04 | 2016-02-17 | 同济大学 | Preparation method of modified asphalt mixture |
-
2019
- 2019-09-30 CN CN201910940126.XA patent/CN110818322B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002088439A1 (en) * | 2001-04-25 | 2002-11-07 | W.R. Grace & Co.-Conn. | Highly dispersible reinforcing polymeric fibers |
| CN101173104A (en) * | 2007-10-19 | 2008-05-07 | 武汉理工大学 | Method for producing damping porous denoise tunnel asphalt covering material |
| CN101445338A (en) * | 2008-11-27 | 2009-06-03 | 武汉理工大学 | Method for producing wet-mixing, skid-resistance and noise-reduction asphalt road surface material |
| CN103669152A (en) * | 2013-11-04 | 2014-03-26 | 沈阳市政集团有限公司 | Road surface construction method of ultrathin stone mastic asphalt mixture |
| CN103771766A (en) * | 2013-12-27 | 2014-05-07 | 上海浦东路桥建设股份有限公司 | Asphalt mixture with capability of recovering deformation by being heated and preparation method of asphalt mixture |
| CN105330202A (en) * | 2015-11-04 | 2016-02-17 | 同济大学 | Preparation method of modified asphalt mixture |
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Denomination of invention: A Low Heat Capacity Crackproof Asphalt Mixture for Municipal Pavement Effective date of registration: 20230801 Granted publication date: 20220412 Pledgee: Bank of Jiangsu Limited by Share Ltd. Wuxi branch Pledgor: DONGZHU ECOLOGICAL ENVIRONMENTAL PROTECTION Co.,Ltd. Registration number: Y2023980050523 |
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