CN104894939A - Composite type road surface - Google Patents
Composite type road surface Download PDFInfo
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- CN104894939A CN104894939A CN201510285723.5A CN201510285723A CN104894939A CN 104894939 A CN104894939 A CN 104894939A CN 201510285723 A CN201510285723 A CN 201510285723A CN 104894939 A CN104894939 A CN 104894939A
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Abstract
The invention discloses a composite type road surface. The composite type road surface has the following structure: the composite type road surface comprises a soil base on the bottommost layer, and a cement stable crushed stone foundation layer, a cement stable crushed stone base layer, a diluted slurry sealing layer, an anti-cracking and anti-fatigue semi-opening graded asphalt crushed stone transition base layer AM25, a high-modulus, high-load and anti-track cement emulsified asphalt concrete bonding layer, sticking layer oil, and an anti-sliding and wear-resisting SMA13 asphalt concrete upper surface layer from the soil base to the upper side; the soil base is 600cm, the cement stable crushed stone foundation layer is 18cm, the cement stable crushed stone base layer is 36cm, the diluted slurry sealing layer and the anti-cracking and anti-fatigue semi-opening graded asphalt crushed stone transition base layer AM25 are 8cm, the high-modulus, high-load and anti-track cement emulsified asphalt concrete bonding layer is 8cm; and the sticking layer oil, and the anti-sliding and wear-resisting SMA13 asphalt concrete upper surface layer are 4cm. The composite type road surface has the characteristics that the damages to reflective cracks are reduced, a composite type base layer is formed, the whole bearing capability of the road surface is guaranteed and the service life is long.
Description
Technical field
The present invention relates to a kind of road surface, be specifically related to a kind of long-life composite pavement, belong to traffic route design field.
Background technology
Multifunctional long service road surface is the development trend of current road, makes damage major control on the top layer on road surface mainly through rational structure and material modular design, and pavement proper structure can safe operation for a long time.Design core is the ability that the surface course of requirement road structure has draining, noise reduction, antiskid and abrasion resisting, binder course is positioned at high pressure stress district, require that there is good bearing capacity, rutting resistance and durability, its structural deterioration form substantially eliminates ubiquitous basic unit fatigue damage traditionally, ensure the fatigue crack do not occurred from below to up, extend the application life that road is long-term.
The Long Life Asphalt Pavement investigation and application aspect of European and American developed countries has more bibliographical information, main thought is the purpose of design reaching longlife noodles road surface by increasing pavement asphalt layer thickness, the average asphalt thickness in longlife noodles road surface of the U.S. is 17.4cm-35.3cm, and the Long Life Pavement asphalt thickness in Europe is also most at more than 20cm.China's Long Life Asphalt Pavement is still in the exploratory stage, and wherein the surface thickness of Shenzhen-Guangzhou superhighway long-life test section reaches 32cm.Along The Yangtze River In Jiangsu Province speedway, its long-life test road section surface gross thickness 76cm, bituminous concrete layer thickness is 25cm.Southern Jiangsu is to the Shanghai-Nanjing Expressway reconstruction Long Life Pavement test section in Shanghai, and bituminous concrete layer thickness reaches 27cm.In comparison, China's present stage Semi rigid bituminous surface typical double layer bituminous concrete combination thickness is generally at about 10cm.Consider the specific national conditions of China's present stage, indiscriminately imitate European and American developed countries' Long Life Pavement mentality of designing completely and will inevitably bring great cost pressure, therefore urgently find the Long-life Pavement Structure being applicable to current national conditions and material system.
Summary of the invention
The object of the present invention is to provide a kind of cost is lower, be applicable to China's national situation Long-life Pavement Structure and material system.
The present invention is achieved in that
A kind of composite pavement, has following structure:
Comprise undermost soil matrix, and from soil matrix upwards, be respectively cement stabilized macadam subbase, cement stabilized macadam base, slurry seal, anticracking antifatigue half open gradation asphalt macadam transition basic unit AM25, high-modulus high-bearing Rut resistance Cement emulsified asphalt concrete binder course, sticking layer oil, antiskid wear-resisting SMA13 bituminous concrete upper layer.
Soil matrix thickness is 600cm, cement stabilized macadam subbase thickness is 18cm, cement stabilized macadam base thickness is 36cm, slurry seal, anticracking antifatigue half open gradation asphalt macadam transition basic unit AM25 thickness is 8cm, high-modulus high-bearing Rut resistance Cement emulsified asphalt concrete binder course thickness is 8cm, and the thickness of antiskid wear-resisting SMA13 bituminous concrete upper layer is 4cm.
Each layer also has following character respectively:
Soil matrix modulus of elasticity is 50MPa, poisson's ratio 0.35;
Cement stabilized macadam subbase modulus of elasticity is 1480MPa, poisson's ratio 0.15;
Cement stabilized macadam base modulus of elasticity is 1550MPa, poisson's ratio 0.15;
Half open gradation asphalt macadam transition basic unit AM25 modulus of elasticity is 720MPa, poisson's ratio 0.30;
Cement emulsified asphalt concrete binder course modulus of elasticity is 2800MPa, poisson's ratio 0.27;
SMA13 bituminous concrete upper layer modulus of elasticity is 1385MPa, poisson's ratio 0.28.
The cold mixing Cement emulsified asphalt concrete (cement emulsified asphalt cement is called for short CEAC) that the present invention adopts is through hydrated cementitious sclerosis and the cementing acting in conjunction of pitch and is closely linked by aggregate, half flexible composite that has rigidity and tenderness concurrently.It has modulus high (28 days, 2500 ~ 3600Mpa), Rut resistance (dynamic stability reaches 20000 times/mm), water stability good (immersion residual stability >=90%), freeze-thaw split strength ratio large (>=90%), the advantage that good endurance, temperature sensitivity are low.CEAC can play the effectiveness of waterproof sealing to a certain extent simultaneously, avoid rainwater to infiltrate basic unit and soil matrix, and without the need to arranging shrinkage joint, road surface running vehicle planarization and comfortableness have also been obtained guarantee.Therefore CEAC is suitable for the road surface binder course being applied to multifunctional long service road surface very much.In addition, for the reflection crack problem that China's Semi rigid bituminous surface is common, semi-rigid cement stabilized macadam base arranges flexible Large stone half open gradation asphalt macadam transition basic unit AM25, reduce the harm of reflectivity crackle, form composite base, ensure the bearing capacity of road surface entirety.The requirement of this road structure and combination of materials and multifunctional long service road surface road pavement materials and structures form is very identical, has good development prospect.
The present invention proposes a Multifunction long-life composite asphalt pavement structure combination relatively optimized.Clearly propose the context layer formula Cement emulsified asphalt concrete of mixing and stirring being applied to multifunctional long service flexible pavement, and the composite base of asphalt macadam+cement stabilized macadam is set.This Pavement Structure Combination supporting capacity is strong, and higher than conventional pitch road surface, and good endurance, Rut resistance, waterproof, overall cracking resistance are superior.
The formula Cement emulsified asphalt concrete of mixing and stirring can be constructed at normal temperatures, energy-saving and cost-reducing.
In a word, the safe operation cycle can be improved, for development resource saving, environmentally friendly highway provide new useful thinking in multifunctional long service municipal administration road surface.
Accompanying drawing explanation
Fig. 1 is road structure schematic diagram of the present invention.
Detailed description of the invention
See Fig. 1, a kind of composite pavement, has following structure:
Comprise undermost soil matrix 1, and from soil matrix upwards, be respectively cement stabilized macadam subbase 2, cement stabilized macadam base 3, slurry seal 4, anticracking antifatigue half open gradation asphalt macadam transition basic unit AM255, high-modulus high-bearing Rut resistance Cement emulsified asphalt concrete binder course 6, sticking layer oil 7, antiskid wear-resisting SMA13 bituminous concrete upper layer 8.
Soil matrix thickness is 600cm, cement stabilized macadam subbase thickness is 18cm, cement stabilized macadam base thickness is 36cm, slurry seal, anticracking antifatigue half open gradation asphalt macadam transition basic unit AM25 thickness is 8cm, high-modulus high-bearing Rut resistance Cement emulsified asphalt concrete binder course thickness is 8cm, and the thickness of antiskid wear-resisting SMA13 bituminous concrete upper layer is 4cm.
Each layer also has following character respectively:
Soil matrix modulus of elasticity is 50MPa, poisson's ratio 0.35;
Cement stabilized macadam subbase modulus of elasticity is 1480MPa, poisson's ratio 0.15;
Cement stabilized macadam base modulus of elasticity is 1550MPa, poisson's ratio 0.15;
Half open gradation asphalt macadam transition basic unit AM25 modulus of elasticity is 720MPa, poisson's ratio 0.30;
Cement emulsified asphalt concrete binder course modulus of elasticity is 2800MPa, poisson's ratio 0.27;
SMA13 bituminous concrete upper layer modulus of elasticity is 1385MPa, poisson's ratio 0.28.
Claims (2)
1. a composite pavement, is characterized in that having following structure:
Comprise undermost soil matrix, and from soil matrix upwards, be respectively cement stabilized macadam subbase, cement stabilized macadam base, slurry seal, anticracking antifatigue half open gradation asphalt macadam transition basic unit AM25, high-modulus high-bearing Rut resistance Cement emulsified asphalt concrete binder course, sticking layer oil, antiskid wear-resisting SMA13 bituminous concrete upper layer;
Soil matrix thickness is 600cm, cement stabilized macadam subbase thickness is 18cm, cement stabilized macadam base thickness is 36cm, slurry seal, anticracking antifatigue half open gradation asphalt macadam transition basic unit AM25 thickness is 8cm, high-modulus high-bearing Rut resistance Cement emulsified asphalt concrete binder course thickness is 8cm, and the thickness of antiskid wear-resisting SMA13 bituminous concrete upper layer is 4cm.
2. composite pavement according to claim 1, is characterized in that:
Described soil matrix modulus of elasticity is 50MPa, poisson's ratio 0.35;
Cement stabilized macadam subbase modulus of elasticity is 1480MPa, poisson's ratio 0.15;
Cement stabilized macadam base modulus of elasticity is 1550MPa, poisson's ratio 0.15;
Half open gradation asphalt macadam transition basic unit AM25 modulus of elasticity is 720MPa, poisson's ratio 0.30;
Cement emulsified asphalt concrete binder course modulus of elasticity is 2800MPa, poisson's ratio 0.27;
SMA13 bituminous concrete upper layer modulus of elasticity is 1385MPa, poisson's ratio 0.28.
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| CN201510285723.5A CN104894939B (en) | 2015-05-29 | 2015-05-29 | Composite type road surface |
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| CN201510285723.5A CN104894939B (en) | 2015-05-29 | 2015-05-29 | Composite type road surface |
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| CN104894939A true CN104894939A (en) | 2015-09-09 |
| CN104894939B CN104894939B (en) | 2017-03-22 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108999050A (en) * | 2018-07-30 | 2018-12-14 | 杨芳林 | A kind of pavement structure and its construction method |
| CN114214888A (en) * | 2021-12-30 | 2022-03-22 | 上海浦东路桥(集团)有限公司 | Drainage road surface composite construction suitable for heavy traffic |
| CN114717901A (en) * | 2022-02-23 | 2022-07-08 | 河北工业大学 | Full-thickness asphalt pavement structure taking steel wire mesh reinforced asphalt concrete as base layer |
| CN114808586A (en) * | 2022-05-16 | 2022-07-29 | 中交一公局第一工程有限公司 | Construction method for preventing asphalt pavement from cracking in severe cold region |
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| CN2687166Y (en) * | 2004-03-26 | 2005-03-23 | 重庆交通学院 | Flexible base anticracking asphalt road surface structure |
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| CN203360965U (en) * | 2013-04-27 | 2013-12-25 | 西安公路研究院 | Drainage asphalt pavement structure based on crack resistance requirement |
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2015
- 2015-05-29 CN CN201510285723.5A patent/CN104894939B/en not_active Expired - Fee Related
Patent Citations (5)
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| CN2687166Y (en) * | 2004-03-26 | 2005-03-23 | 重庆交通学院 | Flexible base anticracking asphalt road surface structure |
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| CN101597878A (en) * | 2009-06-26 | 2009-12-09 | 华南理工大学 | A kind of combined type paving structure and paving method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108999050A (en) * | 2018-07-30 | 2018-12-14 | 杨芳林 | A kind of pavement structure and its construction method |
| CN114214888A (en) * | 2021-12-30 | 2022-03-22 | 上海浦东路桥(集团)有限公司 | Drainage road surface composite construction suitable for heavy traffic |
| CN114717901A (en) * | 2022-02-23 | 2022-07-08 | 河北工业大学 | Full-thickness asphalt pavement structure taking steel wire mesh reinforced asphalt concrete as base layer |
| CN114717901B (en) * | 2022-02-23 | 2023-08-18 | 河北工业大学 | Full-thickness asphalt pavement structure with steel wire mesh reinforced asphalt concrete as base layer |
| CN114808586A (en) * | 2022-05-16 | 2022-07-29 | 中交一公局第一工程有限公司 | Construction method for preventing asphalt pavement from cracking in severe cold region |
| CN114808586B (en) * | 2022-05-16 | 2024-03-15 | 中交一公局第一工程有限公司 | Construction method for asphalt pavement anti-cracking in severe cold region |
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