CN205134126U - Half flexible bituminous paving basic unit structure - Google Patents
Half flexible bituminous paving basic unit structure Download PDFInfo
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- CN205134126U CN205134126U CN201520917815.6U CN201520917815U CN205134126U CN 205134126 U CN205134126 U CN 205134126U CN 201520917815 U CN201520917815 U CN 201520917815U CN 205134126 U CN205134126 U CN 205134126U
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Abstract
The utility model discloses a half flexible bituminous paving basic unit structure, include upper base layer and go to a grassroots level that as two ashes and stabilizing the metalling, upper base layer is foam asphalt cold two grey metallings of regeneration on the spot. The utility model discloses a foam asphalt is cold regeneration technique on the spot, carries out the regeneration to on -the -spot waste material, adds half flexible upper base layer in the sub -surface, has both overcome semi rigid base course and because weak shortcoming is connected at the interface that the difference of material leads to between with the asphalt surface course, can guarantee again that the road surface structure has sufficient intensity and overall stability.
Description
Technical field
The utility model relates to a kind of half flexible Asphalt Pavement Base structure.
Technical background
Be the high-grade highway Large scale construction phase of China at the end of last century, Asphalt Pavement Base uses two-ash broken stones structure in a large number, nowadays, these road surfaces are along with the growth of service life and the traffic volume, progressively march toward the maintenance interval, wherein a large amount of damages of lime-fly ash aggregate base flexible pavement are the emphasis of present high-level Techniques in Maintenance of Roads.As shown in Figure 1, structural representation is destroyed on maintenance Qian Jiu road, comprising on asphalt surface course 01, crushed stone sealing 02 and two-ash broken stones basic unit 03 and go to a grassroots level 04, on semirigid two-ash broken stones, basic unit 03 is by crack reflection to asphalt surface course 01, makes the diseases such as generation crack, road surface, loose, hole groove.
For above-mentioned lime-fly ash aggregate base Problems existing, traditional method for maintaining has two kinds: one, adopt new cement stabilized macadam backfill; Two, cold in place recycling is carried out to former two-ash broken stones; All there is Reflective Crack over Asphalt Pavement with Semi-rigid problem in above-mentioned two kinds of methods, pavement durability is not enough, and first method have ignored two-ash broken stones potential recycle value, cause the significant wastage of resource.
In view of the defect that above-mentioned existing sub-surface maintenance program exists, the present inventor is based on being engaged in the practical experience and professional knowledge that this type of product design manufacture enriches for many years, and coordinate the utilization of scientific principle, actively in addition research and innovation, to founding a kind of half novel flexible Asphalt Pavement Base structure, it is made to have more practicality.
Utility model content
The utility model adopts Cold In-place Recycling Technology with Foamed Bitumen, regeneration is carried out to the lime-fly ash aggregate base waste material of on-the-spot milling, set up in sub-surface semiflexible on basic unit, both overcome semi-rigid type base connects weakness shortcoming with the interface that the difference due to material between asphalt surface course causes, and can ensure that again road structure had enough intensity and resistance to overturning.
The technical solution of the utility model is: a kind of half flexible Asphalt Pavement Base structure, comprise basic unit and go to a grassroots level, go to a grassroots level as fly ash lime stabilized crushed rock layer, upper basic unit is foamed asphalt cold in place recycling two-ash broken stones layer.
Further, upper groundwork thickness is 16cm ~ 18cm.
Further, between the top of upper basic unit and asphalt surface course, crushed stone sealing is set.
After have employed technique scheme, the utility model has following beneficial effect:
1, foamed asphalt cold in place recycling two-ash broken stones floor carries out the milling material reclaiming of old road by scene and obtains, and without the need to extra allocation and transportation, saves haul distance;
2, foamed asphalt cold in place recycling two-ash broken stones can shorten preserving period compared to fly ash lime stabilized crushed rock, shortens to 4 ~ 5 days by original 7 days, and then shortens the maintenance and renovation overall duration;
3, foamed asphalt cold in place recycling two-ash broken stones layer adopts cold recycling technology, and combination property is given prominence to, and has that intensity is high, antifatigue, anti-water damage, prevents the performances such as reflection crack, can effective prolonging service life of pavement.
4, foamed asphalt cold in place recycling two-ash broken stones layer is semiflexible upper basic unit, overcomes semi-rigid type base connects weakness shortcoming with the interface that the difference due to material between asphalt surface course causes.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is road structure destruction schematic diagram former before maintenance;
Fig. 2 is the utility model Pavement Base Structure schematic diagram;
Implication is marked: on 01 asphalt surface course, 02 crushed stone sealing, 03 two-ash broken stones, basic unit, 04 goes to a grassroots level, basic unit, 4 goes to a grassroots level on 1 asphalt surface course, 2 crushed stone sealings, 3 in accompanying drawing.
Detailed description of the invention
Technical scheme in the utility model is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of the utility model protection.
The utility model embodiment adopts the mode of going forward one by one to write.
As shown in Figure 2, the present embodiment provides a kind of half flexible Asphalt Pavement Base structure, comprises basic unit 3 and goes to a grassroots level 4, go to a grassroots level 4 for fly ash lime stabilized crushed rock layer, upper basic unit 3 is foamed asphalt cold in place recycling two-ash broken stones layer, and wherein, upper basic unit 3 thickness is 16cm ~ 18cm.
In this half flexible Asphalt Pavement Base structure, the top of basic unit 3 is connected by crushed stone sealing 2 with between asphalt surface course 1.
When pavement maintenance is punished, if by basic unit 3 partial destruction on road surface after detecting, go to a grassroots level 4 intact, then can adopt pavement maintenance structural concept described in the utility model.
Concrete, first by Bituminous concrete surface surface layer 01 milling; Then foamed asphalt cold in place recycling is carried out to basic unit on former two-ash broken stones 03, obtain basic unit 3 on semiflexible foamed asphalt cold in place recycling two-ash broken stones, do without the need to extra allocation and transportation like this, save haul distance, the circulation making two-ash broken stones potential is worth and is fully utilized, and avoids the significant wastage of resource; And preserving period can be shortened, and then shorten the maintenance and renovation overall duration; Overcome semi-rigid type base connects weakness shortcoming with the interface that the difference due to material between asphalt surface course causes simultaneously; Crushed stone sealing 2 is laid afterwards on upper basic unit 3, and making asphalt surface course 1 thereon.
Keep in repair the foamed asphalt cold in place recycling two-ash broken stones layer disposed like this, combination property is outstanding, has that intensity is high, antifatigue, anti-water damage, prevents the performances such as reflection crack, can effective prolonging service life of pavement.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (3)
1. one and half flexible Asphalt Pavement Base structures, comprise basic unit (3) and go to a grassroots level (4), described go to a grassroots level (4), for fly ash lime stabilized crushed rock layer, is characterized in that: described upper basic unit (3) is foamed asphalt cold in place recycling two-ash broken stones layer.
2. half flexible Asphalt Pavement Base structure according to claim 1, is characterized in that, described upper basic unit (3) thickness is 16cm ~ 18cm.
3. half flexible Asphalt Pavement Base structure according to claim 1, is characterized in that, arranges crushed stone sealing (2) between the top of described upper basic unit (3) and asphalt surface course (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520917815.6U CN205134126U (en) | 2015-11-17 | 2015-11-17 | Half flexible bituminous paving basic unit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520917815.6U CN205134126U (en) | 2015-11-17 | 2015-11-17 | Half flexible bituminous paving basic unit structure |
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| CN205134126U true CN205134126U (en) | 2016-04-06 |
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| CN201520917815.6U Active CN205134126U (en) | 2015-11-17 | 2015-11-17 | Half flexible bituminous paving basic unit structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106676995A (en) * | 2017-02-09 | 2017-05-17 | 山东省交通科学研究院 | Method for designing deep and thick asphalt pavement structure of red mud roadbed through Bayer process |
| CN110714386A (en) * | 2019-11-11 | 2020-01-21 | 上海市市政规划设计研究院有限公司 | Long-life semi-flexible base pavement structure and construction method thereof |
-
2015
- 2015-11-17 CN CN201520917815.6U patent/CN205134126U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106676995A (en) * | 2017-02-09 | 2017-05-17 | 山东省交通科学研究院 | Method for designing deep and thick asphalt pavement structure of red mud roadbed through Bayer process |
| CN106676995B (en) * | 2017-02-09 | 2019-07-23 | 山东省交通科学研究院 | A kind of deep formula asphalt pavement structure design method of Bayer process red mud roadbed |
| CN110714386A (en) * | 2019-11-11 | 2020-01-21 | 上海市市政规划设计研究院有限公司 | Long-life semi-flexible base pavement structure and construction method thereof |
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