CN203346753U - Asphalt pavement - Google Patents
Asphalt pavement Download PDFInfo
- Publication number
- CN203346753U CN203346753U CN2013203324588U CN201320332458U CN203346753U CN 203346753 U CN203346753 U CN 203346753U CN 2013203324588 U CN2013203324588 U CN 2013203324588U CN 201320332458 U CN201320332458 U CN 201320332458U CN 203346753 U CN203346753 U CN 203346753U
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- Prior art keywords
- pavement
- asphalt
- layer
- flexible pavement
- asphalt pavement
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Abstract
The utility model aims at providing an asphalt pavement which comprises a foundation, a base layer, a lower paving layer, a middle layer, an upper paving layer and a wear-resistant layer from the bottom up, wherein the height of the center of the asphalt pavement is higher than those of the two edges of the asphalt pavement; the base layer is an asphalt macadam pavement; the lower paving layer is an asphalt pavement added with butadiene styrene rubber; the middle layer is an asphalt pavement added with polyethylene; the upper paving layer is an asphalt concrete pavement; and the wear-resistant layer is an asphalt mastic macadam mixture pavement added with an asbestos fiber. The asphalt pavement has the benefits that the asphalt pavement is more high-temperature-resistant, higher in low-temperature-resistant adaptability, good in toughness, anti-fatigue, stable in performance and long in service life; the bearing capacity of the pavement is improved; and the maintenance cost is lowered.
Description
Technical field
The utility model relates to the road building technology field, relates in particular to a kind of flexible pavement.
Background technology
Flexible pavement is various types of road surfaces of mixing bitumen for road use material making in the mineral material.Asphalt binder has improved the ability of paving the way with pellet opposing driving and the infringement of natural cause road pavement, makes the few dirt, waterproof, durable in use of evenness of road surface.Therefore, flexible pavement is a kind of high class pavement (comprising sub high class pavement) by the most extensively adopting in road construction.
Asphalt binder is bonded to integral body by the mineral pellet, gains in strength and strengthens the ability that road surface opposing driving destroys, and road surface is had a water resisting property.The bituminous material that is applicable to the build road surface is mainly petroleum bitumen and coal tar pitch, in addition, also has natural asphalt.The character of pitch and label requirement, different and different with weather and the traffic conditions in highway section in flexible pavement kind, area; Heat is mixed or hot method is watered and spilt and should select thicker pitch on hot area and heavy traffic road; Cold mixing or cold process are watered and are spilt and should select rarer pitch on cold district and light traffic road.
The pitch class formation layer of flexible pavement itself, belong to the flexible pavement category, but its basic unit also can adopt the cement concrete of rigidity except flexible material, or semirigid hydraulic material.Flexible pavement has multiple sorting technique, and by gathering materials, the kind difference is divided into: sand asphalt, asphaltic earth, pitch broken (gravel) stone compound etc.; By bituminous material kind difference, be divided into: petroleum bitumen road surface, coal tar pitch road surface, natural asphalt road surface and residual-oil pavement.But more general sorting technique is to be divided into by its job practices, technical qualities and handling characteristics: asphalt concrete pavement, plantmix's bituminous macadam pavement, bituminous penetration pavement, road mix pitch broken (gravel) stone mixture pavement and bituminous surface treatment road surface.
Cost of New Type Asphalt Pavement refers to original flexible pavement and compares, rubber, resin, high molecular polymer, levigate modifier such as rubber powder have newly been added, or adopt pitch is carried out to mild oxidation processing, thereby make the improved asphalt mixture of performance of pitch.There are good durability, wear resistence in the road surface of laying with it, realizes that high temperature is not softening, and low temperature does not ftracture.
The premium properties of modified bitumen derives from the modifier that it adds, this modifier not only can merge mutually under the effect of temperature and kinetic energy, but also can react with pitch, thereby greatly improved the mechanical property of pitch, just as added reinforcing bar in concrete.In order to stop the contingent segregation phenomenon of general modified bitumen, the modifying process of pitch is to complete in a kind of special mobile device, by the compound that comprises pitch and modifier of liquid state by being covered with the colloid mill of groove, under the effect of the colloid mill of High Rotation Speed, the molecule of modifier is cleaved, having formed new structure is then swashed and is mapped to Mo Bishang and rebounds again, be mixed into equably in the middle of pitch, so move in circles, not only make pitch and modification obtain the homogenizing processing, and the mutual tractive of the strand that makes modifier, net distribution, improved the intensity of compound, strengthened anti-fatigue ability.When pressure wheel is crossed modified bitumen, corresponding slight deformation occurs in asphalt roofing, and after wheel, because modified bitumen is strong to the adhesion stress of aggregate, elasticity is recovered, and makes extruded part recover rapidly open and flat original state.
Butadiene-styrene rubber road surface (SBR); Add pitch by 2% after pulverizing, make modified asphalt matrix, while then using, add again certain proportion to mix with plain asphalt.Add solvent to become Sspan SBR in addition > latex, directly mix pitch.
PEF road surface (PE); Austria has been used the modified bitumen of a kind of Novophalt of being referred to as, uses the history of existing 15 years, thereafter in Italy, Czech, the U.S. also corresponding promoting the use of.Add PEF (PE) or mix again styrol copolymer (thermoplastic materials gonosome (SBS) at pitch.
North America pitch UN-A: be a kind of natural resin that produce in UINTAH basin, Utah, USA east, be block, through the processing grinding powdered, become commodity.According to Beijing Highway Administration Bureau testing, add the UN-A of 5%-10%.The needle penetration ductility brittle point of pitch and adhesiveness, Marshall stability all improve significantly.
The utility model content
Problem to be solved in the utility model is to provide a kind of flexible pavement.
The technical solution of the utility model is as follows: a kind of flexible pavement is characterized in that: comprise from the bottom to top ground, basic unit, lower laying, intermediate layer, upper laying and wearing course; Central authorities' height of described flexible pavement is higher than the both sides height of flexible pavement; Described basic unit is bituminous macadam pavement; Described lower laying is the flexible pavement that adds butadiene-styrene rubber; Described intermediate layer is for adding poly flexible pavement; Described upper laying is asphalt concrete pavement; Described wearing course is the stone mastic asphalt road surface that adds asbestos fiber.
Further, central authorities' height of described flexible pavement is higher than the both sides height of flexible pavement, and the angle that its difference in height produces is not more than 7 degree.
The beneficial effects of the utility model are: by the utility model flexible pavement, more high temperature resistant, anti-low temperature adaptability is stronger; Good toughness, antifatigue, enhanced road surface supporting capacity; Stable performance, long service life, reduce maintenance costs.
The accompanying drawing explanation
Fig. 1 is hierarchical structure schematic diagram of the present utility model.
Wherein: 1, ground, 2, basic unit,
3, lower laying, 4, intermediate layer,
5, upper laying, 6, wearing course,
A, angle.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model specific embodiment is made to brief description.
As shown in Figure 1, a kind of flexible pavement, comprise ground 1, basic unit 2, lower laying 3, intermediate layer 4, upper laying 5 and wearing course 6 from the bottom to top; Central authorities' height of described flexible pavement is higher than the both sides height of flexible pavement; The included angle A that difference in height produces is not more than 7 degree.Described basic unit 2 is bituminous macadam pavement; Described lower laying 3 is for adding the flexible pavement of butadiene-styrene rubber; Described intermediate layer 4 is for adding poly flexible pavement; Described upper laying 5 is asphalt concrete pavement; Described wearing course 6 is for adding the stone mastic asphalt road surface of asbestos fiber.
Above an embodiment of the present utility model is had been described in detail, but described content is only preferred embodiment of the present utility model, can not be considered to for limiting practical range of the present utility model.All equalization variations of doing according to the utility model application range and improvement etc., within all should still belonging to patent covering scope of the present utility model.
Claims (1)
1. a flexible pavement, is characterized in that: comprise from the bottom to top ground (1), basic unit (2), lower laying (3), intermediate layer (4), upper laying (5) and wearing course (6); Central authorities' height of described flexible pavement is higher than the both sides height of flexible pavement; Described basic unit (2) is bituminous macadam pavement; Described lower laying (3) is for adding the flexible pavement of butadiene-styrene rubber; Described intermediate layer (4) is for adding poly flexible pavement; Described upper laying (5) is asphalt concrete pavement; Described wearing course (6) is for adding the stone mastic asphalt road surface of asbestos fiber.
2 flexible pavements according to claim 1 is characterized in that: central authorities' height of described flexible pavement is higher than the both sides height of flexible pavement, and the angle that its difference in height produces (A) is not more than 7 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203324588U CN203346753U (en) | 2013-06-08 | 2013-06-08 | Asphalt pavement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203324588U CN203346753U (en) | 2013-06-08 | 2013-06-08 | Asphalt pavement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203346753U true CN203346753U (en) | 2013-12-18 |
Family
ID=49746672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203324588U Expired - Fee Related CN203346753U (en) | 2013-06-08 | 2013-06-08 | Asphalt pavement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203346753U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| TWI586870B (en) * | 2015-04-30 | 2017-06-11 | Asphalt brick installation method | |
| CN108660889A (en) * | 2018-08-17 | 2018-10-16 | 山东省交通科学研究院 | A kind of energy-saving environment protection asphalt pavement structure |
-
2013
- 2013-06-08 CN CN2013203324588U patent/CN203346753U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| TWI586870B (en) * | 2015-04-30 | 2017-06-11 | Asphalt brick installation method | |
| CN108660889A (en) * | 2018-08-17 | 2018-10-16 | 山东省交通科学研究院 | A kind of energy-saving environment protection asphalt pavement structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 Termination date: 20150608 |
|
| EXPY | Termination of patent right or utility model |