CN113718581A - Asphalt pavement structure - Google Patents
Asphalt pavement structure Download PDFInfo
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- CN113718581A CN113718581A CN202110892863.4A CN202110892863A CN113718581A CN 113718581 A CN113718581 A CN 113718581A CN 202110892863 A CN202110892863 A CN 202110892863A CN 113718581 A CN113718581 A CN 113718581A
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- aggregate
- artificial
- asphalt pavement
- pavement structure
- structure according
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/35—Toppings or surface dressings; Methods of mixing, impregnating, or spreading them
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/35—Toppings or surface dressings; Methods of mixing, impregnating, or spreading them
- E01C7/353—Toppings or surface dressings; Methods of mixing, impregnating, or spreading them with exclusively bituminous binders; Aggregate, fillers or other additives for application on or in the surface of toppings with exclusively bituminous binders, e.g. for roughening or clearing
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses an asphalt pavement structure, which comprises a pavement layer which is positioned on a base layer and formed by paving aggregate, artificial reinforced aggregate and asphalt mixture, wherein the artificial reinforced aggregate is a plurality of artificial particles with embedded strips, the embedded strips of the artificial particles are distributed along the space to form a multi-stage space skeleton structure, and the aggregate is embedded and extruded among the embedded strips of the artificial reinforced aggregate; the artificial reinforcing aggregate and the aggregate with the multistage spatial framework structure are mixed with the asphalt mixture for pavement, the artificial reinforcing aggregate and the aggregate are mutually locked and overlapped, are mutually meshed to form an interlocking structure, and are combined with the bonding effect of the asphalt to form a pavement structure layer with higher strength, artificial particles and common aggregate can form higher internal friction after being embedded and extruded, so that the aggregate cannot slide, the plastic flow trend cannot be generated under the external horizontal load effect, the interlocking effect is strong, and the stability and the deformation resistance of the asphalt mixture can be improved.
Description
Technical Field
The invention relates to the field of roads and bridges, in particular to an asphalt pavement structure.
Background
The asphalt pavement is a combination of asphalt and mineral aggregate through a certain physical-chemical action, and is characterized by that it possesses high asphalt content, and the contact surface between coarse aggregate is large, so that it possesses the properties of both embedded and extruded type and compact type asphalt mixture. The aggregate performance will influence the mechanical properties of asphalt pavement such as high temperature rutting resistance, low temperature cracking resistance, normal temperature fatigue resistance and the like to a great extent. The road performance of the embedded and compacted asphalt mixture depends greatly on the internal friction and the internal friction angle of the structure. The shape, surface texture, roughness and angularity of the tough particles of the stone of the coarse aggregate affect the mutual embedding and extruding and combining effect of the aggregate. The crushing value and the abrasion value of the macadam do not meet the requirements, so that the stability of the asphalt mixture is low, and the service function and the long-term service characteristic of the asphalt pavement are greatly influenced. The aggregate joint surface of the asphalt pavement is a relatively weak asphalt membrane interface formed by asphalt and stone powder, and aggregates on two sides can slide under the shearing action of the interface; this results in the asphalt pavement material having macro-plastic flowability and being prone to permanent deformation such as rutting and moving. Rutting is a macroscopic manifestation of the internal slippage of the asphalt pavement material. The internal organization structure of the asphalt concrete enables the asphalt concrete to naturally have the characteristic of easy internal slippage.
Disclosure of Invention
In view of the above, the present invention provides an asphalt pavement structure, which is formed by mixing asphalt mixture with artificial reinforced aggregate and aggregate having a multi-stage spatial framework structure, and paving the mixture, wherein the artificial reinforced aggregate and the aggregate are mutually locked and engaged to form an interlocking structure, and then are combined with the bonding effect of asphalt, so that the strength of the formed pavement structure layer is higher, the artificial reinforced aggregate and the aggregate cannot slide under the vehicle-mounted effect, and the interlocking structure has the advantages of stronger embedding and squeezing force, large internal friction resistance, high structural stability, high strength of a pavement layer, and good wear resistance.
The asphalt pavement structure comprises a pavement layer which is positioned on a base layer and formed by paving aggregate, artificial reinforced aggregate and asphalt mixture, wherein the artificial reinforced aggregate is a plurality of artificial particles with embedded strips, the embedded strips of the artificial particles are distributed along the space to form a multi-stage space skeleton structure, and the aggregate is embedded and extruded among the embedded strips of the artificial reinforced aggregate;
further, the artificial reinforced aggregate is a plurality of artificial particles with embedded strips, and the embedded strips of the artificial particles are distributed along the space and can be mutually embedded and extruded to form an interlocking structure;
further, the artificial particle has at least three fillets;
further, the mixing amount of the artificial reinforced aggregate is 3-10%;
furthermore, the embedded strips are symmetrically and fixedly connected into a whole along the center of the space;
furthermore, the embedded strips are fixedly connected into a whole along the center of the space;
further, smooth transition curved surfaces are arranged between adjacent embedded strips of the artificial particles;
further, the length of the slugs of the artificial particles is no greater than 2 cm;
furthermore, the insertion strip is of a conical structure, and the bottoms of the conical structures are symmetrically and fixedly connected into a whole along the center of the space;
furthermore, the insertion strip is of a cylindrical structure, and the bottoms of the cylindrical structures are symmetrically and fixedly connected into a whole along the center of the space;
further, the artificial reinforced aggregate is a metal material.
The invention has the beneficial effects that: the invention discloses an asphalt pavement structure, which adopts artificial reinforced aggregate and aggregate with a multi-stage space skeleton structure as aggregate to be mixed with asphalt mixture for pavement, the artificial reinforced aggregate and the aggregate are mutually locked and mutually occluded to form an interlocking structure, and then the artificial particles and common aggregate are combined with the bonding effect of asphalt, so that the formed pavement structure layer has higher strength, artificial particles can form higher internal friction resistance after being embedded and extruded, the aggregate cannot slide, the tendency of plastic flow cannot be generated under the action of external horizontal load, the interlocking effect is strong, the stability and the deformation resistance of the asphalt mixture can be improved, and the pavement layer has high strength and good wear resistance.
Drawings
The invention is further described below with reference to the following figures and examples:
FIG. 1 is a schematic structural view of an artificial aggregate according to the present invention;
FIG. 2 is a schematic structural view of another artificial aggregate according to the present invention;
FIG. 3 is a schematic structural view of the interlocking of the artificial aggregate of the present invention;
FIG. 4 is a schematic structural view of the asphalt pavement of the present invention.
Detailed Description
The asphalt pavement structure comprises a pavement layer 4 which is formed by paving aggregate, artificial reinforced aggregate 3 and asphalt mixture on a base layer, wherein the artificial reinforced aggregate 3 is a plurality of artificial particles 1 with embedded strips 2, the embedded strips 2 of the artificial particles 1 are distributed along the space to form a multi-stage space skeleton structure, and the aggregate is embedded and extruded among the embedded strips 2 of the artificial reinforced aggregate 1. The aggregate and the artificial reinforced aggregate 3 are mutually locked and meshed, and the structure of the artificial aggregate 3 can lock the aggregate to avoid aggregate slippage. Artificial particle 1 is made by manual design, inlay crowded reinforce with the skeleton texture that forms after crowded with gathering materials, internal friction resistance is big, structural stability is high, the adhesive action of rethread bituminous mixture, whole pavement layer structural strength is higher, artificial particle 1's fillet 2 can prevent to gather materials to any direction and slide, and under on-vehicle effect, mutual locking between artificial aggregate 3 and the gathering materials, slide between taking place the layer in order to hinder, the cohesiveness of pitch and reinforcing aggregate is strong, interlaminar structural stability is good, pavement layer 4's intensity is high, the wearability is good. The fillets 2 of the artificial particle 1 are spatially distributed and spatially distributed in a three-dimensional structure, and the formed three-dimensional structure is a spatial three-dimensional structure. The shape and the structure of each artificial particle 1 are consistent, and the artificial particles are manufactured by manual design, so that the uniformity of particle composition is ensured, which is completely different from the existing aggregate particles. The interlocking structure is formed by mutually interlocking and extruding the embedded strips 2 with the aggregates between the artificial particles 1, the structural strength is higher, higher internal friction force can be formed, slippage cannot occur between the artificial particles 1 and the aggregates, the tendency of plastic flow cannot be generated under the action of external horizontal load, the interlocking effect is strong, and the stability of the asphalt mixture can be improved.
In this embodiment, the artificial particle 1 has at least three bands 2; the structure of the artificial particle 1 can be a central connecting body and embedded strips 2 distributed on the central connecting body, a plurality of embedded strips 2 can be distributed along the surface of the central connecting body, and the mutual embedding and interlocking between the artificial particle 1 and the aggregate can be realized as long as three embedded strips 2 are simultaneously arranged. The central connecting body is used for fixing a plurality of embedded strips 2 simultaneously, and the central connecting body and the embedded strips 2 are integrally formed, so that the structural stability is higher, and the strength is higher. The structure of the fillet 2 can take various forms, such as a cylindrical shape, a prismatic shape, etc.
In the embodiment, the mixing amount of the artificial reinforced aggregate 3 is 3-10% (accounting for 3-10% of the total weight of the asphalt mixture), and the artificial reinforced aggregate 3 is a metal material, preferably an aluminum material or a steel material; too small or too large amount of the artificial aggregate affects the structural strength of the framework.
In the embodiment, the artificial reinforced aggregates 3 of the asphalt pavement are fixedly connected into a whole along the spatial center symmetrically by the embedded strips 2; the overall structure has higher strength, is more stable and is more uniform in stress. As shown in fig. 1.
In the embodiment, the insertion strip 2 is fixedly connected into a whole along the center of the space; the fillet 2 fixedly connected along the space center can not adopt a symmetrical fixed structure, and still has certain interlocking stability and firmness. As shown in fig. 2.
In the embodiment, the adjacent fillets 2 of the artificial particle 1 have smooth transition curved surfaces; the smooth transition curved surface can effectively eliminate the stress concentration phenomenon existing between the aggregates under the action of horizontal load after extrusion, and improve the stability of the skeleton formed by the aggregates.
In the present example, the length of the slugs 2 of the artificial granules 1 is not greater than 1 cm;
the long length of the filler rod 2 can affect the uniformity of the whole material after the artificial particles 1 and the aggregate are stirred, so that the strength of the interlocking structure is not high, and the skeleton formed under the action of horizontal load is easy to have a local collapse phenomenon.
In this embodiment, the fillet 2 is a conical structure, and the bottom of the conical structure is fixedly connected into a whole along the spatial central symmetry, or the fillet 2 is a cylindrical structure, and the bottom of the cylindrical structure is fixedly connected into a whole along the spatial central symmetry, so that a good embedding and extruding interlocking effect can be achieved no matter the conical structure or the cylindrical structure is adopted.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. An asphalt pavement structure, its characterized in that: including being located the fashioned road surface layer of aggregate, artificial reinforcing aggregate and bituminous mixture pavement on the basic unit, artificial reinforcing aggregate is a plurality of artificial particles that have the fillet, artificial particles's fillet is multistage space skeleton texture along spatial distribution, the aggregate inlays and extrudes between artificial reinforcing aggregate's fillet.
2. The asphalt pavement structure according to claim 1, wherein: the artificial particle has at least three fillets.
3. The asphalt pavement structure according to claim 1, wherein: the mixing amount of the artificial reinforced aggregate is 3-10%.
4. The old cement concrete additional paving modification structure as claimed in claim 3, wherein: the embedded strips are symmetrically and fixedly connected into a whole along the center of the space.
5. The asphalt pavement structure according to claim 3, wherein: the embedded strips are fixedly connected into a whole along the center of the space.
6. An asphalt pavement structure according to claim 4 or 5, characterized in that: the artificial particles have smooth transition curved surfaces between adjacent fillets.
7. The asphalt pavement structure according to claim 6, wherein: the length of the slugs of the manufactured particles is no greater than 2 cm.
8. The asphalt pavement structure according to claim 7, wherein: the fillet is the toper structure, and the bottom of toper structure is as an organic whole along the central symmetry fixed connection in space.
9. The asphalt pavement structure according to claim 8, wherein: the fillet is the cylindricality structure, and the bottom of cylindricality structure is as an organic whole along the spatial center symmetry fixed connection.
10. The asphalt pavement structure according to claim 9, wherein: the artificial reinforced aggregate is a metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110892863.4A CN113718581A (en) | 2021-08-04 | 2021-08-04 | Asphalt pavement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110892863.4A CN113718581A (en) | 2021-08-04 | 2021-08-04 | Asphalt pavement structure |
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| Publication Number | Publication Date |
|---|---|
| CN113718581A true CN113718581A (en) | 2021-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110892863.4A Pending CN113718581A (en) | 2021-08-04 | 2021-08-04 | Asphalt pavement structure |
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| Country | Link |
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| CN (1) | CN113718581A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0741344A (en) * | 1992-12-14 | 1995-02-10 | Akira Kasai | Aggregate and paving material |
| CN105593189A (en) * | 2013-07-29 | 2016-05-18 | 西尔斯技术有限公司 | Composite structural material and aggregate therefor |
| CN111018408A (en) * | 2019-12-11 | 2020-04-17 | 山东省交通科学研究院 | Permanent bituminous paving antiskid wearing and tearing layer |
-
2021
- 2021-08-04 CN CN202110892863.4A patent/CN113718581A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0741344A (en) * | 1992-12-14 | 1995-02-10 | Akira Kasai | Aggregate and paving material |
| CN105593189A (en) * | 2013-07-29 | 2016-05-18 | 西尔斯技术有限公司 | Composite structural material and aggregate therefor |
| CN111018408A (en) * | 2019-12-11 | 2020-04-17 | 山东省交通科学研究院 | Permanent bituminous paving antiskid wearing and tearing layer |
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Effective date of registration: 20220915 Address after: No.399 Congyun Road, Baiyun District, Guangzhou, Guangdong 510420 Applicant after: GUANGDONG HUALU TRANSPORT TECHNOLOGY Co.,Ltd. Applicant after: Guangxi Nanning Beitou Xinwei River Environmental Management Co.,Ltd. Applicant after: CHONGQING JIAOTONG University Address before: 510420 No. 399, North Congyun Road, Baiyun Avenue, Baiyun District, Guangzhou, Guangdong Applicant before: Zeng Dongsheng |