CN101092808A - Stress absorption structured llayer of discontinuous ajar particle distribution limit mixture for asphaltum with high viscosity - Google Patents
Stress absorption structured llayer of discontinuous ajar particle distribution limit mixture for asphaltum with high viscosity Download PDFInfo
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- CN101092808A CN101092808A CN 200710043845 CN200710043845A CN101092808A CN 101092808 A CN101092808 A CN 101092808A CN 200710043845 CN200710043845 CN 200710043845 CN 200710043845 A CN200710043845 A CN 200710043845A CN 101092808 A CN101092808 A CN 101092808A
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Abstract
This invention relates to a stress absorption structure layer of asphalt intermittent high viscosity grade semi mixture laid between a cement concrete road surface and asphalt mixture worn layer taking Embedded crowded Mineral coarse aggregate as the frame to fill mastic fat composed of high viscosity asphalt combined material, mineral powder filling material, lignin fiber stabilizer and mineral fine material among the framework, the mass percentage includes: high viscosity asphalt combined material 5-6.50, mineral powder filling material 4-6.00, lignin fiber stabilizer .020-0.40 and the rest is the intermittent semi mixture.
Description
Technical field
The present invention relates to highway construction, be laid on the stress absorption structure layer between cement concrete pavement and the asphaltic road-mix surface course when being specifically related to repair old cement concrete pavement.
Background technology
Cement concrete pavement damage in various degree can occur through after a while use.On cement concrete pavement, overlay asphalt concrete pavement (being commonly called as " morning-night "), can improve the application life of the function of use of cement pavement, the planeness of improving the road surface, prolongation cement pavement.But the stretching action that the contraction of cement concrete plate horizontal direction or displacement cause, or the flexural tensile stress of surface layer bottom, or under the heavy traffic load action vertical shearing stress at seam or crack place, all can produce reflection crack at asphalt concrete pavement, influence the life-span of asphalt concrete pavement, the destruction under low temperature condition is particularly remarkable.
For effectively preventing, delay and reduce the appearance of reflection crack, the normal employing thicklyer (as get 10～15cm) overlay and repair, but this be caused difficulty can for the control of pavement-height, and improve rehabilitation cost.In recent years appear at the processing method that the reflection crack stress absorbing layer is set between cement concrete slab and the asphaltic road-mix surface course.Reflection crack stress absorbing layer " Strata " as the production of U.S. company.But this product has only absorption function, does not have structure function, after using in " morning-night " engineering in cities such as Beijing, Shanghai, confirms that its stress absorption effect is limited, and needs to overlay in addition deck, has increased the thickness and the cost of total so undoubtedly.In addition, " Strata " stress absorbing layer can fundamentally be lost the stress absorption function as in use being subjected to structural destruction.
Summary of the invention
The objective of the invention is to propose a kind of asphaltum with high viscosity stress absorption structured llayer of discontinuous ajar particle distribution limit mixture when being applied to the cement concrete pavement reinstatement works, to overcome the shortcoming of prior art.
A kind of asphaltum with high viscosity of the present invention is interrupted half-open grating compound (being called for short the GSOG bituminous mixture) stress absorption structure layer, is layed between cement concrete pavement and the bituminous mixture abrasion performance surface layer.
This deck is that the mineral coarse aggregate that is squeezed by mutual embedding is a skeleton, the bitumastic of forming with asphaltum with high viscosity binder and breeze inserts, wood fiber stabilizer and mineral fine aggregate is filled between skeleton and the half-open structure of type is squeezed in the embedding that forms, existing functional, have structural again;
Its mass percent consists of:
Asphaltum with high viscosity binder 5～6.50;
Breeze inserts 4～6.00;
Wood fiber stabilizer 0.20～0.40;
Be interrupted half-open grating mineral compound surplus.
The paving thickness of this stress absorption structure layer is 4～8cm.
Wherein:
Described breeze inserts adopts levigate agstone.
Described asphaltum with high viscosity binder is that to add mass ratio in matrix pitch be that the asphalt modifier with high viscosity of being made up of s-B-S triblock copolymer, Petropols and kieselguhr (RST) of 8-11% makes.This asphalt modifier with high viscosity (RST) is made up of s-B-S triblock copolymer (SBS), Petropols and kieselguhr.Relevant asphalt modifier with high viscosity technology is open by Chinese patent ZL2005100232279 " a kind of asphalt modifier with high viscosity and preparation method thereof) ".The SBS triblock copolymer is in each side such as high warm nature, low temperature properties, elasticity recovery, response to temperature, the outstanding advantage that promising PE and EVA can't reach.Adopt the asphaltum with high viscosity binder after the modification of RST asphalt modifier with high viscosity, compare, can improve the binding ability with mineral aggregate, improve structural stability with general modified asphalt binders; Can improve the toughness of deck, opposing normal temperature fatigue; Can improve the elasticity of deck and improve low temperature extension ability.
The half-open grating of described interruption (Gap-Semi-Open-Graded is called for short GSOG) mineral compound is meant the mineral aggregate that is interrupted some particle size range in mineral aggregate gradation is formed; After this compound and pitch mixed and stirred compacting, the void content of formation was between 8-14%.
Compound adopts the half-open grating of interruption to have the following advantages: structure is squeezed in (1) embedding can make compound have higher structural stability; (2) the coarse aggregate interstitial structure is to by pitch and thinner building stones, and the viscoloid-bitumastic of compositions such as breeze has bigger spatial accommodation; (3) help improving the deformability of compound, so help the absorption of stress; (4) be convenient to adjust the fine aggregate consumption, improve the consumption of high-viscosity modified asphalt binder, increase asphalt membrane thickness.
Asphaltum with high viscosity of the present invention is interrupted half-open grating compound, with the GSOG compound with carry out the advantage combination through the asphaltum with high viscosity binder of RST modification, by compound coarse granule cage construction bearing load, asphaltum with high viscosity matizhi wrapping frame particle by filling makes compound can resist the shearing force that produces because of the concrete plate changing of the relative positions, forms the stress absorption ability, thereby improve structural stability and toughness, opposing normal temperature fatigue is improved elasticity, improves low temperature extension ability.Thereby make deck aspect anti-shearing, anti-fatigue ability, all more generally descend surface material to improve a lot; Simultaneously, its high temperature stability performance, the nonshrink fragility energy of low temperature, important pavement performance index such as water stability also all surpasses general absorbed layer material.
Asphaltum with high viscosity stress absorption structured llayer of discontinuous ajar particle distribution limit mixture of the present invention is owing to have good anti-vertical shearing effect, stress absorption effect and higher structural strength is arranged, as high-temperature stability, water stability, cryogenic property and the temperature stability that contracts, therefore have the following advantages: (1) can delay and reduce the appearance of reflection crack effectively; (2) construction technology is simple, can effectively reduce miscellaneous working procedure in " morning-night " process, guarantees the continuity of bituminous mixture laying; (3) can reduce pitch abrasion performance surface layer covering thickness, satisfy the requirement of grade elevation control; (4) can reduce engineering cost and running cost.
The specific embodiment
Now the invention will be further described in conjunction with the embodiments.
Embodiment 1:
The asphaltum with high viscosity that described stress absorption structure layer adopts is interrupted arbitrary component in the weight percentages of components of half-open grating compound such as the table 1:
Wherein:
Asphaltum with high viscosity binder: get matrix pitch admixture 10% (mass ratio) RST modifier modification.
With the GSOG-20 bituminous mixture is example, and the coarse aggregate and the fine aggregate that are interrupted half-open grating mineral compound all adopt diabase, and wherein the grading limit of coarse aggregate is 19.0,16.0,13.2,9.5 and 4.75mm (square hole particle diameter), and apparent relative density is 2.753; The grading limit of fine aggregate is 0.075,0.15,0.3,0.6 and 1.18mm, 2.36mm (square hole particle diameter), and apparent relative density is 2.728.Inserts is selected levigate agstone for use, and density is 2.692g/cm3.
Table 1
| Composition | Component 1 | Component 2 | Component 3 |
| The asphaltum with high viscosity binder | 6.3％ | 5.8％ | 5.3％ |
| The breeze inserts | 5.9％ | 4.8％ | 4.2％ |
| Wood fiber stabilizer | 0.37％ | 0.31％ | 0.21％ |
| Be interrupted half-open grating compound | Surplus | Surplus | Surplus |
Mix and stir by being interrupted half-open grating compound and a small amount of breeze inserts, wood fiber stabilizer and asphaltum with high viscosity binder, the stress absorption structure layer that forms after the compacting, its void content is between 8-14%.Because GSOG-20 has bigger void in mineral aggregate, so the packing space of matizhi material is open, this adopts the mode that improves the asphalt binder consumption to increase the pitch thickness on coarse aggregate surface for hope, and the bending resistance that improves compound thus draws ability, strengthens the stress absorption effect and created good condition.
By test, the design nominal maximum aggregate size be the asphaltum with high viscosity of 20mm be interrupted plain asphalt compound AC-20 that half-open grating compound GSOG-20 and preliminary design select for use at anti-shear ability, bend the aspects such as important pavement performance of drawing fatigue behaviour, areas of high temperature and rainfall all have a clear superiority.Specifically referring to table 2.
Table 2
| Pilot project | Index | Unit | GSOG-20 | AC-20 |
| Anti-shear performance | S(40 C、3600) | MPa | 2855.2 | 222.9 |
| The curved fatigue behaviour that draws | Fatigue life | Inferior | 91112 | 6782 |
| High-temperature stability | Dynamic stability | Inferior/mm | 5589 | 1201.5 |
| The temperature stability that contracts | Stiffness modulus is poor | MPa | 8559.5 | 11756.8 |
| Water stability | TSR | ％ | 92.5 | 79.8 |
Embodiment 2:
Repair process to cement concrete pavement is as follows:
1. to before the former cement concrete pavement covering, need not make break process.
2. earlier on the cement concrete slab block road, carry out the waterproof preliminary treatment, stick waterproof roll and paste the seam adhesive linkage, spread the modified emulsifying asphalt adhesive linkage, spill 3～6mm aggregate chips;
3. pave and go up 5.5cm asphaltum with high viscosity stress absorption structured llayer of discontinuous ajar particle distribution limit mixture of the present invention;
4. laying waterproofing course: 0.5cm slurry seal;
5. spread the asphalt Matrix mixing material abrasion performance surface layer of 4cm through the SBS modification.
The overlay structure of cement concrete pavement of the present invention, respond well after multinomial " morning-night " engineering is on probation.The service condition of some road is more abominable, pays a return visit after 1 year, any reflection crack all do not occur.
Claims (8)
1. an asphaltum with high viscosity stress absorption structured llayer of discontinuous ajar particle distribution limit mixture is layed between cement concrete pavement and the bituminous mixture abrasion surface layer, it is characterized in that:
This deck is that the mineral coarse aggregate that is squeezed by mutual embedding is a skeleton, the bitumastic of forming with asphaltum with high viscosity binder and breeze inserts, wood fiber stabilizer and mineral fine aggregate is filled between skeleton and the half-open structure of type is squeezed in the embedding that forms, existing functional, have structural again;
Its mass percent consists of:
Asphaltum with high viscosity binder 5～6.50;
Breeze inserts 4～6.00;
Wood fiber stabilizer 0.20～0.40;
Be interrupted half-open grating mineral compound surplus.
2. asphaltum with high viscosity stress absorption structured llayer of discontinuous ajar particle distribution limit mixture according to claim 1 is characterized in that: described asphaltum with high viscosity binder is that to add mass ratio in matrix pitch be that the asphalt modifier with high viscosity of being made up of s-B-S triblock copolymer, Petropols and kieselguhr of 8-11% makes.
3. asphaltum with high viscosity stress absorption structured llayer of discontinuous ajar particle distribution limit mixture according to claim 1 is characterized in that: described breeze inserts adopts levigate agstone.
4. asphaltum with high viscosity stress absorption structured llayer of discontinuous ajar particle distribution limit mixture according to claim 1 is characterized in that: the half-open grating mineral of described interruption compound is meant the mineral aggregate that is interrupted some particle size range in aggregate grading gradation composition; After this compound and pitch mixed and stirred compacting, the void content of formation was between 8-14%.
5. asphaltum with high viscosity stress absorption structured llayer of discontinuous ajar particle distribution limit mixture according to claim 4, it is characterized in that: the coarse aggregate and the fine aggregate of the half-open grating mineral of described interruption compound all adopt the rolling rubble of hard, wherein the coarse aggregate grading limit is 19.0,16.0,13.2,9.5 and 4.75mm square hole particle diameter, and the fine aggregate grading limit is 0.075,0.15,0.3,0.6 and 1.18mm, 2.36mm square hole particle diameter.
6. asphaltum with high viscosity stress absorption structured llayer of discontinuous ajar particle distribution limit mixture according to claim 1 is characterized in that: its paving thickness is 4～8cm.
7. asphaltum with high viscosity stress absorption structured llayer of discontinuous ajar particle distribution limit mixture according to claim 1 is characterized in that: after described cement concrete plate was prevented water pretreatment, this stress absorption structure layer again paved.
8. asphaltum with high viscosity stress absorption structured llayer of discontinuous ajar particle distribution limit mixture according to claim 1 is characterized in that: after this lays waterproofing course above stress absorption structure layer, re-lay asphalt Matrix mixing material abrasion performance surface layer.
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| CN 200710043845 CN101092808A (en) | 2007-07-17 | 2007-07-17 | Stress absorption structured llayer of discontinuous ajar particle distribution limit mixture for asphaltum with high viscosity |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103114510A (en) * | 2013-01-21 | 2013-05-22 | 合肥工业大学 | Bituminous pavement provided with lattice structure transition compound layer and construction method thereof |
| CN103964753A (en) * | 2014-04-29 | 2014-08-06 | 福建师范大学 | Preparation method for infusion bag film-modified SMA (Stone Matrix Asphalt) |
| CN104003656A (en) * | 2014-05-05 | 2014-08-27 | 广厦建设集团有限责任公司贵州分公司 | SMA mixture, and preparation method and application thereof |
| CN105755921A (en) * | 2016-04-07 | 2016-07-13 | 广州市高速公路有限公司 | Novel asphalt pavement structure |
| CN105803885A (en) * | 2014-06-30 | 2016-07-27 | 上海浦东路桥建设股份有限公司 | Rubber modified asphalt fiber chip seal and pavement method thereof |
| CN105821734A (en) * | 2016-03-28 | 2016-08-03 | 长沙理工大学 | Drainage type modified asphalt coarse aggregate discontinuous semi-open graded asphalt stabilized macadam |
| CN106810128A (en) * | 2017-01-17 | 2017-06-09 | 广州市高速公路有限公司 | A kind of reinforced asphalt AC 25 |
| CN107759138A (en) * | 2017-11-08 | 2018-03-06 | 上海浦东路桥建设股份有限公司 | Assembled asphalt pavement material and the preparation method with the prefabricated component |
| CN109306095A (en) * | 2018-09-26 | 2019-02-05 | 上海仁聚新材料科技有限公司 | Toughening asphalt modifier, toughening composite modified asphalt, asphalt and preparation method thereof |
| CN109610260A (en) * | 2018-12-24 | 2019-04-12 | 上海浦兴路桥建设工程有限公司 | A kind of penetrated asphalt pavement structure inhibiting reflection cracking in a pavement |
| CN110218461A (en) * | 2019-04-22 | 2019-09-10 | 湖北交投科技发展有限公司 | A kind of bitumen regenerant, reclaimed asphalt mixture and preparation method thereof |
| CN113429885A (en) * | 2021-05-29 | 2021-09-24 | 山东哈力克新材料科技有限公司 | Old asphalt pavement coating material and preparation method thereof |
| CN113429884A (en) * | 2021-05-29 | 2021-09-24 | 山东哈力克新材料科技有限公司 | Anti-freezing coating material for road and preparation method thereof |
| CN116177923A (en) * | 2022-12-21 | 2023-05-30 | 江苏西尔玛道路环保材料有限公司 | Asphalt-based fog seal material, preparation method thereof, sand-containing fog seal material and application thereof |
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2007
- 2007-07-17 CN CN 200710043845 patent/CN101092808A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103114510A (en) * | 2013-01-21 | 2013-05-22 | 合肥工业大学 | Bituminous pavement provided with lattice structure transition compound layer and construction method thereof |
| CN103114510B (en) * | 2013-01-21 | 2014-05-14 | 合肥工业大学 | Bituminous pavement provided with lattice structure transition compound layer and construction method thereof |
| CN103964753A (en) * | 2014-04-29 | 2014-08-06 | 福建师范大学 | Preparation method for infusion bag film-modified SMA (Stone Matrix Asphalt) |
| CN104003656A (en) * | 2014-05-05 | 2014-08-27 | 广厦建设集团有限责任公司贵州分公司 | SMA mixture, and preparation method and application thereof |
| CN104003656B (en) * | 2014-05-05 | 2016-01-06 | 广厦建设集团有限责任公司贵州分公司 | A kind of SMA mixture and its preparation method and application |
| CN105803885A (en) * | 2014-06-30 | 2016-07-27 | 上海浦东路桥建设股份有限公司 | Rubber modified asphalt fiber chip seal and pavement method thereof |
| CN105821734A (en) * | 2016-03-28 | 2016-08-03 | 长沙理工大学 | Drainage type modified asphalt coarse aggregate discontinuous semi-open graded asphalt stabilized macadam |
| CN105755921A (en) * | 2016-04-07 | 2016-07-13 | 广州市高速公路有限公司 | Novel asphalt pavement structure |
| CN106810128A (en) * | 2017-01-17 | 2017-06-09 | 广州市高速公路有限公司 | A kind of reinforced asphalt AC 25 |
| CN107759138A (en) * | 2017-11-08 | 2018-03-06 | 上海浦东路桥建设股份有限公司 | Assembled asphalt pavement material and the preparation method with the prefabricated component |
| CN109306095A (en) * | 2018-09-26 | 2019-02-05 | 上海仁聚新材料科技有限公司 | Toughening asphalt modifier, toughening composite modified asphalt, asphalt and preparation method thereof |
| CN109610260A (en) * | 2018-12-24 | 2019-04-12 | 上海浦兴路桥建设工程有限公司 | A kind of penetrated asphalt pavement structure inhibiting reflection cracking in a pavement |
| CN110218461A (en) * | 2019-04-22 | 2019-09-10 | 湖北交投科技发展有限公司 | A kind of bitumen regenerant, reclaimed asphalt mixture and preparation method thereof |
| CN113429885A (en) * | 2021-05-29 | 2021-09-24 | 山东哈力克新材料科技有限公司 | Old asphalt pavement coating material and preparation method thereof |
| CN113429884A (en) * | 2021-05-29 | 2021-09-24 | 山东哈力克新材料科技有限公司 | Anti-freezing coating material for road and preparation method thereof |
| CN116177923A (en) * | 2022-12-21 | 2023-05-30 | 江苏西尔玛道路环保材料有限公司 | Asphalt-based fog seal material, preparation method thereof, sand-containing fog seal material and application thereof |
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