CN101161938A - Polyacrylonitrile fiber reinforcement micro surfacing - Google Patents
Polyacrylonitrile fiber reinforcement micro surfacing Download PDFInfo
- Publication number
- CN101161938A CN101161938A CNA2006101391116A CN200610139111A CN101161938A CN 101161938 A CN101161938 A CN 101161938A CN A2006101391116 A CNA2006101391116 A CN A2006101391116A CN 200610139111 A CN200610139111 A CN 200610139111A CN 101161938 A CN101161938 A CN 101161938A
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- CN
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- Prior art keywords
- polyacrylonitrile fiber
- polyacrylonitrile
- fiber reinforced
- resistance
- fiber reinforcement
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- 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.)
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Classifications
-
- 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
-
- 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
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/29—Frost-thaw resistance
-
- 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
Abstract
The invention discloses a polyacrylonitrile fiber reinforced micro-surface technology which consists of conventional micro-surface and polyacrylonitrile fiber, wherein, the content of the polyacrylonitrile is 0.1-1.0 percent of the total weight of asphalt slurry mixture. The invention also discloses a preparation method of polyacrylonitrile fiber reinforced micro-surface mixture. The polyacrylonitrile fiber reinforced micro-surface has better performance of high temperature rutting resistance, low temperature crack resistance and water proof and anti-water damage; the polyacrylonitrile fiber can absorb stress generated by retraction during temperature shrinkage process, emergence and development of cracks are prevented, so the polyacrylonitrile fiber reinforced micro-surface has good performance of anti-slide, wear resistance, shock resistance, crack resistance and freeze-thaw resistance; the implementation method is simple and practicable, the prior asphalt mixture preparation equipment can be used for direct preparation, new equipment is not required to be invested; the polyacrylonitrile fiber reinforced micro-surface can be applied to various grades of highways, in particular to maintenance of high-grade highways.
Description
[technical field]
The present invention relates to a kind of little table place, especially a kind of admixture fiber strengthen little table place technology.
[background technology]
Highway communication is the indispensable infrastructure of contemporary economic society high speed development, and its performance and quality often produce influence closely to social life.Because the not good traffic accident that causes of highway performance, frequent maintenance tend to cause traffic jam, hinder socio-economic development.How to delay the aging of flexible pavement, the control pavement crack increases the service life, and is the important topic that present road maintenance department faces.Need to update the performance of highway maintenance material for this reason, promote the use of new material.
Along with the generally use of polymer modified asphalt, the polymer modification mulseal is also developing rapidly.At beginning of the seventies late 1960s, Germany has at first launched the research to little table place.Scientists is started with from the prescription of the emulsified bitumen slurry mixture of routine, by in mulseal, adding high molecular polymer and additive, the polymer modification mulseal, gather materials, filler, water and Admixture, make micro-surfacing mixture after mixing and stirring by reasonable match ratio, can pave and form seal on the former road surface, crack on the redeck prolongs road life.This technology can be accelerated the curing of seal, makes paving layer and former road surface secure adhesion.Polymer modification emulsified asphalt slurry seal technology that Here it is.
Little table place technology is a kind of preferably road maintenance technology of effect, to appear on arterial street, speedway and the airport roadway because the reparation of the disease that the crack produces is the most effective.This road structure can be filled up rut, repairs rapidly wearing and tearing, aging, crack, disease such as smooth, loose, and satisfies the requirement of the different cross section shape that paves, can be in the back 1～2 hour of paving open to traffic rapidly; Can carry out preventive maintenance to road, play waterproof, anti-skidding, smooth, wear-resisting effect.
But increase along with the little table of making place practice in recent years, people recognize that gradually little table place making aftershaping time is long, early strength is low, need close traffic during maintenance, high temperature season is easily softening, opposing permanent deformation and poor durability can not adapt to the big situation of common road flexible pavement distortion, can not satisfy the requirement of big traffic, heavy traffic road pavement.Therefore, need to adopt new technological means, improve the performance at existing little table place, make it satisfy higher maintenance of surface requirement.
[summary of the invention]
The technical issues that need to address of the present invention are that the long-time close traffic of needs, hot environment are easily softened, resist the permanent deformation poor durability, can not be adapted to the shortcomings such as requirement that the common road flexible pavement is out of shape big situation, can not satisfies big traffic, heavy traffic road pavement when overcoming the maintenance of traditional little table place.
A kind of polyacrylonitrile fiber reinforcement micro surfacing technology, it is made up of the little table place and the polyacrylonitrile fibre of routine, and wherein, the content of polyacrylonitrile fibre is 0.1～1.0% of bitumen slurries compound gross weight.
The preparation method of polyacrylonitrile fiber reinforcement micro surfacing compound: will prepare earlier that conventional little table place needs gather materials and fiber evenly mixes and stirs, and then add polymer-modified mulseal, water, filler and additive, stir mixing and stirring in the storehouse of slurry seal mixer, promptly obtain the compound of polyacrylonitrile fiber reinforcement micro surfacing.
Compared with prior art, the invention has the beneficial effects as follows: 1) polyacrylonitrile fibre adsorptive pitch in a large number, improve the affinity and the even Combination of fiber and bituminous concrete, make polyacrylonitrile fiber reinforcement micro surfacing of the present invention have the anti-rut of high temperature, anti-low-temperature cracking preferably, and excellent waterproof, anti-water damage property; 2) polyacrylonitrile fibre can absorb the stress that produces because of contraction in warm compression process, prevent the generation and the development in crack, make profiled-cross-section hollow polymer fiber of the present invention strengthen little table place and have good antiskid, wear-resisting, shock resistance, cracking resistance and resistance to freezing and thawing; 3) implementation method is simple, can utilize original bituminous mixture to prepare equipment and directly prepare, and needn't invest new equipment; 4) polyacrylonitrile fiber reinforcement micro surfacing of the present invention can be applicable to various the standard highways especially maintenance and the maintenance of high-grade highway.
[specific embodiment]
The equipment for preparing polyacrylonitrile fiber reinforcement micro surfacing of the present invention can be common slurry seal equipment.
Beneficial effect of the present invention depends primarily on the good oil absorbency that polyacrylonitrile fibre has.Following table is the performance of polyacrylonitrile fibre:
The performance of polyacrylonitrile fibre
| Project | Technical indicator | Project | Technical indicator |
| Fiber number (dtex) | 0.9～2.1 | Tensile strength (MPa) | 500～1000 |
| Nominal diameter (mm) | 0.010～0.015 | Elongation at break (%) | (15～25)±5 |
| Length (mm) | 6±1.5 | Modulus of elasticity (GPa) | 7～20 |
| Proportion (g/m 3) | 1.18 | Fusing point (℃) | ＞220 |
| Color | Faint yellow | Fiber number (root/kg) | 600,000,000～1,100,000,000 |
As can be seen from the table, the radical of per kilogram polyacrylonitrile fibre obviously increases, and will significantly improve the viscosity of cementitious matter.
Embodiment 1:
Polymer modification mulseal: SBS polymer modification mulseal, bitumen aggregate ratio 7%.
Fiber: do not add fiber.
Filler: adopt the 425# Portland cement, volume is 2%.Every performance meets the regulation of " asphalt highway construction technique normalizing " (JTG F40-2004).
Main aggregate: sand and aggregate chips, every performance meet the regulation of " asphalt highway construction technique normalizing " (JTG F40-2004).
The mineral aggregate gradation situation is:
| Sieve aperture (mm) | 9.5 | 4.75 | 2.36 | 1.18 | 0.6 | 0.30 | 0.15 | 0.075 |
| Percent of pass (%) | 100 | 99.36 | 85.11 | 55.86 | 37.45 | 25.92 | 18.29 | 12.48 |
Embodiment 2:
Polymer modification mulseal: SBS polymer modification mulseal, bitumen aggregate ratio 7%.
Fiber: be polyacrylonitrile fibre, volume is 0.10% of a compound gross mass.
Filler: adopt the 425# Portland cement, volume is 2%.Every performance meets the regulation of " asphalt highway construction technique normalizing " (JTG F40-2004).
Main aggregate: sand and aggregate chips, every performance meet the regulation of " asphalt highway construction technique normalizing " (JTG F40-2004).The mineral aggregate gradation situation is:
| Sieve aperture (mm) | 9.5 | 4.75 | 2.36 | 1.18 | 0.6 | 0.30 | 0.15 | 0.075 |
| Percent of pass (%) | 100 | 99.36 | 85.11 | 55.86 | 37.45 | 25.92 | 18.29 | 12.48 |
Embodiment 3:
Polymer modification mulseal: SBS polymer modification mulseal, bitumen aggregate ratio 7%.
Fiber: be polyacrylonitrile fibre, volume is 0.15% of a compound gross mass.
Filler: adopt the 425# Portland cement, volume is 2%.Every performance meets the regulation of " asphalt highway construction technique normalizing " (JTG F40-2004).
Main aggregate: sand and aggregate chips, every performance meet the regulation of " asphalt highway construction technique normalizing " (JTG F40-2004).The mineral aggregate gradation situation is:
| Sieve aperture (mm) | 9.5 | 4.75 | 2.36 | 1.18 | 0.6 | 0.30 | 0.15 | 0.075 |
| Percent of pass (%) | 100 | 99.36 | 85.11 | 55.86 | 37.45 | 25.92 | 18.29 | 12.48 |
Embodiment 4:
Polymer modification mulseal: SBS polymer modification mulseal, bitumen aggregate ratio 7%.
Fiber: be polyacrylonitrile fibre, volume is 0.20% of a compound gross mass.
Filler: adopt the 425# Portland cement, volume is 2%.Every performance meets the regulation of " asphalt highway construction technique normalizing " (JTG F40-2004).
Main aggregate: sand and bits, every performance meet the regulation of " asphalt highway construction technique normalizing " (JTG F40-2004).The mineral aggregate gradation situation is:
| Sieve aperture (mm) | 9.5 | 4.75 | 2.36 | 1.18 | 0.6 | 0.30 | 0.15 | 0.075 |
| Percent of pass (%) | 100 | 99.36 | 85.11 | 55.86 | 37.45 | 25.92 | 18.29 | 12.48 |
Embodiment 5:
Polymer modification mulseal: SBS polymer modification mulseal, bitumen aggregate ratio 7%.
Fiber: be polyacrylonitrile fibre, volume is 0.25% of a compound gross mass.
Filler: adopt the 425# Portland cement, volume is 2%.Every performance meets the regulation of " asphalt highway construction technique normalizing " (JTG F40-2004).
Main aggregate: sand and aggregate chips, every performance meet the regulation of " asphalt highway construction technique normalizing " (JTG F40-2004).The mineral aggregate gradation situation is:
| Sieve aperture (mm) | 9.5 | 4.75 | 2.36 | 1.18 | 0.6 | 0.30 | 0.15 | 0.075 |
| Percent of pass (%) | 100 | 99.36 | 85.11 | 55.86 | 37.45 | 25.92 | 18.29 | 12.48 |
Embodiment 6:
Polymer modification mulseal: SBS polymer modification mulseal, bitumen aggregate ratio 7%.
Fiber: be polyacrylonitrile fibre, volume is 0.30% of a compound gross mass.
Filler: adopt the 425# Portland cement, volume is 2%.Every performance meets the regulation of " asphalt highway construction technique normalizing " (JTG F40-2004).
Main aggregate: sand and aggregate chips, every performance meet the regulation of " asphalt highway construction technique normalizing " (JTG F40-2004).
The mineral aggregate gradation situation is:
| Sieve aperture (mm) | 9.5 | 4.75 | 2.36 | 1.18 | 0.6 | 0.30 | 0.15 | 0.075 |
| Percent of pass (%) | 100 | 99.36 | 85.11 | 55.86 | 37.45 | 25.92 | 18.29 | 12.48 |
Embodiment 7:
Polymer modification mulseal: SBS polymer modification mulseal, bitumen aggregate ratio 7%.
Fiber: be polyacrylonitrile fibre, volume is 0.35% of a compound gross mass.
Filler: adopt the 425# Portland cement, volume is 2%.Every performance meets the regulation of " asphalt highway construction technique normalizing " (JTG F40-2004).
Main aggregate: sand and aggregate chips, every performance meet the regulation of " asphalt highway construction technique normalizing " (JTG F40-2004).
The mineral aggregate gradation situation is:
| Sieve aperture (mm) | 9.5 | 4.75 | 2.36 | 1.18 | 0.6 | 0.30 | 0.15 | 0.075 |
| Percent of pass (%) | 100 | 99.36 | 85.11 | 55.86 | 37.45 | 25.92 | 18.29 | 12.48 |
Each embodiment is all according to aforementioned preparation method's production, the polyacrylonitrile fiber reinforcement micro surfacing that can obtain.The performance of 7 embodiment is compared as follows:
The different volumes of fiber are to Effect on Performance
| Example | Bitumen aggregate ratio (%) | Fibers content (%) | Abrasion value (g/m 2) | Bending tensile strength (Mpa) | Splitting tensile strength (Mpa) |
| 1 | 7 | 0 | 487.3 | 6.64 | 0.61 |
| 2 | 7 | 0.10 | 369.2 | 7.29 | 0.70 |
| 3 | 7 | 0.15 | 302.8 | 8.89 | 0.83 |
| 4 | 7 | 0.20 | 202.1 | 9.31 | 0.90 |
| 5 | 7 | 0.25 | 232.1 | 9.45 | 0.98 |
| 6 | 7 | 0.30 | 257.8 | 9.26 | 0.95 |
| 7 | 7 | 0.35 | 395.6 | 8.98 | 0.83 |
This table shows, when the volume of polyacrylonitrile fibre is 0.15～0.30%, abrasion value is minimum, actual cling property, anti-wear performance and the shock resistance of fiber reinforcement micro surfacing reach best, its bending tensile strength, splitting tensile strength reach maximum value simultaneously, so this is best fibers content scope.
Claims (2)
1. polyacrylonitrile fiber reinforcement micro surfacing technology, it is made up of the little table place and the polyacrylonitrile fibre of routine, and wherein, the content of polyacrylonitrile fibre is 0.1～1.0% of bitumen slurries compound gross weight.
2. the preparation method of polyacrylonitrile fiber reinforcement micro surfacing compound: will prepare earlier that conventional little table place needs gather materials and fiber evenly mixes and stirs, and then add polymer-modified mulseal, water, filler and additive, stir mixing and stirring in the storehouse of slurry seal mixer, promptly obtain the compound of polyacrylonitrile fiber reinforcement micro surfacing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101391116A CN101161938A (en) | 2006-10-10 | 2006-10-10 | Polyacrylonitrile fiber reinforcement micro surfacing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101391116A CN101161938A (en) | 2006-10-10 | 2006-10-10 | Polyacrylonitrile fiber reinforcement micro surfacing |
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| Publication Number | Publication Date |
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| CN101161938A true CN101161938A (en) | 2008-04-16 |
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| CNA2006101391116A Pending CN101161938A (en) | 2006-10-10 | 2006-10-10 | Polyacrylonitrile fiber reinforcement micro surfacing |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103342502A (en) * | 2013-07-05 | 2013-10-09 | 东南大学 | Ceramic and asphalt mixture used as stress-absorbing and heat-insulating layer and preparation method of ceramic and asphalt mixture |
| CN106637522A (en) * | 2016-10-19 | 2017-05-10 | 南通大学 | High-dispersion PAN (polyacrylonitrile) fiber for asphalt concrete and method for preparing high-dispersion PAN fiber |
| CN111792866A (en) * | 2020-07-01 | 2020-10-20 | 南通大学 | Preparation method of oleophylic modified polyacrylonitrile fiber and asphalt concrete |
| CN112899807A (en) * | 2021-01-21 | 2021-06-04 | 中国科学院山西煤炭化学研究所 | High-strength, high-modulus and high-toughness polyacrylonitrile fiber and preparation method thereof |
-
2006
- 2006-10-10 CN CNA2006101391116A patent/CN101161938A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103342502A (en) * | 2013-07-05 | 2013-10-09 | 东南大学 | Ceramic and asphalt mixture used as stress-absorbing and heat-insulating layer and preparation method of ceramic and asphalt mixture |
| CN106637522A (en) * | 2016-10-19 | 2017-05-10 | 南通大学 | High-dispersion PAN (polyacrylonitrile) fiber for asphalt concrete and method for preparing high-dispersion PAN fiber |
| CN111792866A (en) * | 2020-07-01 | 2020-10-20 | 南通大学 | Preparation method of oleophylic modified polyacrylonitrile fiber and asphalt concrete |
| CN112899807A (en) * | 2021-01-21 | 2021-06-04 | 中国科学院山西煤炭化学研究所 | High-strength, high-modulus and high-toughness polyacrylonitrile fiber and preparation method thereof |
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Open date: 20080416 |