CN213867156U

CN213867156U - Asphalt pavement antiskid thin layer pavement structure

Info

Publication number: CN213867156U
Application number: CN202021596346.XU
Authority: CN
Inventors: 时敬涛; 李纯; 李剑新; 王体宏; 袁野; 赵磊
Original assignee: Petrochina Co Ltd; Petrochina Fuel Oil Co Ltd
Current assignee: Petrochina Co Ltd; Petrochina Fuel Oil Co Ltd
Priority date: 2020-08-04
Filing date: 2020-08-04
Publication date: 2021-08-03
Anticipated expiration: 2030-08-04

Abstract

The utility model provides a bituminous paving antiskid thin layer structure of mating formation, the structure of mating formation is laid on a bituminous paving, the structure of mating formation has two-layerly, is the high wheel emulsified asphalt adhesion layer that splits fast and pitch mixture layer of highly viscous respectively, with bituminous paving direct contact's one deck is the high wheel emulsified asphalt adhesion layer that splits fast, pitch mixture layer is located the high is fast splits on the wheel emulsified asphalt adhesion layer that does not glue. The utility model provides a pair of durable low noise bituminous paving antiskid thin layer structure of mating formation is applicable to newly-built, or rebuild highway, trunk highway or town road, and highway sections such as specially adapted overpass, longitudinal slope can reduce road surface noise more than 3dB for highway surface antiskid performance, have better driving travelling comfort.

Description

Asphalt pavement antiskid thin layer pavement structure

Technical Field

The utility model relates to a bituminous paving antiskid thin layer structure of mating formation.

Background

Along with the development of road networks in China, the traffic volume of roads is larger and larger, the phenomena of heavy traffic load, overload and the like are increasingly serious, the service performance of the road surface of the road is rapidly attenuated, the service life of the road surface is shortened, and the driving danger is increased.

The thin layer treatment (mat) technology is one of the main highway maintenance technologies and is a maintenance technology with higher cost performance. The asphalt pavement curing agent is used for curing asphalt pavements or building newly pavement surface layers, can treat the problems of reduced pavement anti-skid property, poor pavement surface oil, aging and the like, and solves the problems of pavement cracks, looseness, slight rutting and the like. However, some thin-layer treated asphalt mixtures such as Novacip, UTA and the like at home and abroad have high requirements on raw materials (special aggregates, asphalt and the like), some asphalt mixtures also need warm-mixing agents, fibers and other materials, and the mixture composition is complex; in addition, special equipment is needed for construction, which causes inconvenience and high cost. In addition, most of the current thin-layer asphalt mixture designs mainly depend on experience, a Marshall or Superpave design method is adopted, the relation between aggregate grain size and paving thickness is not considered, and the design result is easy to have larger deviation from the actual application condition.

Meanwhile, for a thin layer treatment technology, the function of a bonding layer is crucial, the requirement on the bonding layer is high, interlayer dislocation and cracking are often caused due to insufficient interlayer bonding, and even though the conventional common bonding layer emulsified asphalt is completely demulsified and formed into a film after being spread, the conventional common bonding layer emulsified asphalt is still often taken away after being rolled by wheels of construction vehicles for spreading mixtures in a field, so that the material loss of the bonding layer is caused, and the bonding effect is reduced. So that the thin layer treated pavement is easy to be damaged by loosening, peeling and the like under the action of the traffic load.

The utility model provides a pair of durable low noise bituminous paving antiskid thin layer structure of mating formation helps solving above-mentioned defect.

SUMMERY OF THE UTILITY MODEL

The invention aims to provide an anti-skid thin-layer pavement structure of an asphalt pavement, which has the functions of durability and low noise.

The utility model provides a bituminous paving antiskid thin layer structure of mating formation, the structure of mating formation is laid on a bituminous paving, the structure of mating formation has two-layerly, is the high glutinous wheel emulsified asphalt adhesion layer that splits soon and pitch mixture bed of material respectively, with bituminous paving direct contact's one deck is the high glutinous wheel emulsified asphalt adhesion layer that splits soon, pitch mixture bed of material is located the high glutinous wheel emulsified asphalt adhesion layer that splits soon is gone up.

In one embodiment, the asphalt mixture is an ultra-thin layer asphalt mixture BBTM-10.

In one embodiment, the thickness of the asphalt mixture is 2-3 cm.

The utility model provides a pair of durable low noise bituminous paving antiskid thin layer structure of mating formation is applicable to newly-built, or rebuild highway, trunk highway or town road, and highway sections such as specially adapted overpass, longitudinal slope can reduce road surface noise more than 3dB for highway surface antiskid performance, have better driving travelling comfort. In addition, the construction can be carried out by common hot-mix asphalt mixture construction machines without additionally increasing working procedures, and the construction cost is low, so that the hot-mix asphalt mixture construction machine has great popularization and application values.

Drawings

Fig. 1 is a schematic view of the thin layer paving structure of the present invention.

Wherein the reference numerals are:

1-asphalt mixture layer

2-high viscosity quick-cracking non-stick wheel emulsified asphalt adhesive layer.

Detailed Description

The detailed description and technical contents of the invention are described as follows with the accompanying drawings: the invention will be further described with reference to the following drawings and examples: the following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby. The pavement structure is laid on an asphalt pavement, and the pavement structure is provided with two layers, namely a high-viscosity quick-cracking non-stick wheel emulsified asphalt adhesion layer 2 and an asphalt mixture layer 2. The high-viscosity quick-cracking non-stick wheel emulsified asphalt adhesive layer 2 is provided with an upper surface and a lower surface, the lower surface of the high-viscosity quick-cracking non-stick wheel emulsified asphalt adhesive layer is in direct contact with the asphalt pavement, and the upper surface of the high-viscosity quick-cracking non-stick wheel emulsified asphalt adhesive layer is an asphalt mixture layer 2. In other words, the high-viscosity quick-cracking non-stick wheel emulsified asphalt adhesive layer is in direct contact with the asphalt pavement, and the asphalt mixture is paved on the upper surface of the high-viscosity quick-cracking non-stick wheel emulsified asphalt adhesive layer. The high-viscosity quick-cracking wheel-tack-free emulsified asphalt in the application is a conventional material (see patent No. 201410671342.6 entitled quick-setting wheel-tack-free layer emulsified asphalt and a preparation method thereof). In one embodiment, the asphalt mixture is an ultra-thin layer asphalt mixture BBTM-10, in this application, the asphalt mixture BBTM-10 is a conventional material (see (European Specification BS EN 13108-2: asphalt mixture-Material Specification-part 2: ultra-thin layer asphalt concrete BBTM), and in one embodiment, the asphalt mixture has a thickness of 2 to 3 cm., and the asphalt mixture layer 2 is a thin layer asphalt mixture BBTM-10 anti-slip surface layer.

The thin-layer pavement structure is further designed in that the ultrathin layer asphalt mixture BBTM-10 is an asphalt mixture with a graded-off skeleton gap structure, the design is carried out based on the performance of the mixture by referring to a French BBTM mixture design method, and the passing rate of key sieve pores and passing rate of 0.063mm is 7% -9%, and the passing rate of 2mm is 25% -35%; the passing rate of 10mm is 90-100%. The method is characterized in that the void ratio of 25 times of rotation of the method standard is 10-17 percent; the water stability is evaluated by a multiseriate test, and the compressive strength ratio ITSR is more than or equal to 75 percent; the high-temperature stability is evaluated by adopting a French rutting test, and the rutting rate P is less than or equal to 15 percent. The cementing material is high-viscosity asphalt, so that the adhesiveness between the mineral aggregate and the asphalt is increased, and the water damage resistance and the high-temperature stability of the mixture are improved.

Thin layer structure of mating formation, adopt on-stick wheel emulsified asphalt to replace ordinary emulsified asphalt adhesive linkage, the tie coat adopts on-stick wheel emulsified asphalt, has that the breakdown of emulsion is fast, construction machine on-stick wheel, characteristics such as anti construction damage to have better adhesive property and waterproof performance, protection road surface structure that can be better.

The high-viscosity asphalt cement and the ultra-thin layer asphalt mixture BBTM-10 designed based on performance are adopted as the anti-skid wearing layer, and engineering practice proves that the anti-skid wear layer has excellent anti-skid performance, can reduce noise by more than 3dB, has better water damage and rutting performance, can effectively prolong the service life of a road surface, and has better social and environmental benefits.

The above description is only a preferred embodiment of the present invention, and it should be noted that: to the ordinary skilled person in this technical field, can also make a plurality of improvements under the prerequisite of not deviating from the utility model, this is improved and should be regarded as the utility model discloses a scope of protection down also.

Claims

1. The utility model provides a bituminous paving antiskid thin layer structure of mating formation, its characterized in that, the structure of mating formation is laid on a bituminous paving, the structure of mating formation has two-layerly, is the high wheel emulsified asphalt adhesion layer that splits soon and pitch mixture layer respectively, with bituminous paving direct contact's one deck is the high wheel emulsified asphalt adhesion layer that splits soon, pitch mixture layer is located the high wheel emulsified asphalt adhesion layer that splits soon.

2. The asphalt pavement anti-skid thin-layer pavement structure as claimed in claim 1, wherein the asphalt mixture is ultra-thin-layer asphalt mixture BBTM-10.

3. The asphalt pavement antiskid thin layer pavement structure of claim 1, wherein the thickness of the asphalt mixture is 2-3 cm.