CN205804077U

CN205804077U - A kind of permanent seal cooling Asphalt Pavement Structure for Country Highways

Info

Publication number: CN205804077U
Application number: CN201620464983.9U
Authority: CN
Inventors: 王慧; 刘少文; 沈佳; 彭刚
Original assignee: Shanxi Province Transport Science Research Institute; Shanxi Jiaoke Highway Survey and Design Institute
Current assignee: Shanxi Province Transport Science Research Institute; Shanxi Jiaoke Highway Survey and Design Institute
Priority date: 2016-05-19
Filing date: 2016-05-19
Publication date: 2016-12-14
Anticipated expiration: 2026-05-19

Abstract

This utility model belongs to road engineering technical field, relates to a kind of permanent seal cooling Asphalt Pavement Structure for Country Highways, including the SBS modified asphalt concrete surface layer, block rubber layer and the semi-rigid type base that are laid on the most successively on soil matrix；Tack coat is all laid between SBS modified asphalt concrete surface layer and block rubber layer and between block rubber layer and semi-rigid type base.This utility model provides a kind of permanent seal cooling Asphalt Pavement Structure for Country Highways, this pavement structure improves soil matrix requirement of strength, reduces the intensity of basic unit, thus greatly reduces the generation of Asphalt Pavement Damage, extend rural highway service life, reduce its overall life cycle cost.

Description

A kind of permanent seal cooling Asphalt Pavement Structure for Country Highways

Technical field

This utility model belongs to road engineering technical field, relates to a kind of pavement structure, particularly relates to a kind of permanent seal cooling agriculture Village's asphalt highway structure.

Background technology

Along with the development of highway in China construction, Country Road Construction is increasingly paid attention to by country and local government, as What improves rural road pavement serviceability further and progressively becomes the problem that each side pays close attention to.Due to Country Road Construction face all the time Facing the problem that investment is deficient, often use the cement pavement that cost is relatively low, even if using bituminous paving, the thickness of bitumen layer is the most non- The thinnest, only 4～5cm, use semi-rigid type base below.Such bituminous paving is the shortest for service life, only 3～5 years will The diseases such as rut, check crack, passage, pit occur on a large scale, and milling of having to heavily spreads.

Utility model content

The purpose of this utility model is to provide a kind of permanent seal cooling Asphalt Pavement Structure for Country Highways, and this pavement structure improves Soil matrix requirement of strength, reduces the intensity of basic unit, thus greatly reduces the generation of Asphalt Pavement Damage, extend agriculture Village's highway service life, reduce its overall life cycle cost.

For achieving the above object, this utility model adopts the following technical scheme that

A kind of permanent seal cooling Asphalt Pavement Structure for Country Highways, it is characterised in that: described permanent seal cooling rural highway bituminous paving Structure includes SBS modified asphalt concrete surface layer, block rubber layer and the semi-rigid base being laid on the most successively on soil matrix Layer；All lay between described SBS modified asphalt concrete surface layer and block rubber layer and between block rubber layer and semi-rigid type base Tack coat.

As preferably, the grating of the SBS modified asphalt concrete surface layer that this utility model uses is AC-13；Described SBS changes The thickness of property asphalt concrete pavement is 4cm～5cm.

As preferably, the block rubber layer that this utility model uses is melted condensation by little tire shoddy and forms；Described rubber The thickness of block layer is 4～5cm.

As preferably, the semi-rigid type base that this utility model uses is cement stabilized macadam base or lime stabilization rubble base Layer, the thickness of described semi-rigid type base is 10～15cm, and the intensity of described semi-rigid type base is more than 2.0MPa and less than 3.0MPa.

As preferably, the intensity of the soil matrix that this utility model uses is more than 60MPa.

As preferably, the tack coat that this utility model uses is modified emulsifying asphalt tack coat；The spreading of described tack coat Amount is 0.3～0.6L/m²。

This utility model compared with the prior art, has the following advantages and beneficial effect:

This utility model provides a kind of permanent seal cooling Asphalt Pavement Structure for Country Highways, including being laid on the most successively SBS modified asphalt concrete surface layer, block rubber layer and semi-rigid type base on soil matrix；SBS modified asphalt concrete surface layer with Tack coat is all laid between block rubber layer and between block rubber layer and semi-rigid type base.This utility model uses SBS modification drip Blue or green concrete provides the bearing capacity of pavement structure, has good driving comfort and antiskid security performance.Block rubber is laid on The lower floor of bituminous concrete, defines the supporting construction of softness, has largely spread the load stress in asphalt surface course.Half The more conventional way of intensity of rigid base reduces 1～2MPa, decreases the cracking under load and humiture effect.Soil matrix intensity Require to improve, shared the increasing of the soil matrix load stress brought owing to semi-rigid type base requirement of strength reduces to a certain extent Greatly.Connect with tack coat between each layer in road surface, it is ensured that interlayer is continuous so that pavement structure provides enough as an entirety Bearing capacity.Ooze under preventing and treating moisture, it is ensured that road surface water stabilizing simultaneously.Whole pavement structure is more preferable compared with conventional pav structure Load stress is diffused into the deeper scope in road surface.Ensure that whole pavement structure was protected in longer time 8～10 years Hold good serviceability.

Accompanying drawing explanation

Fig. 1 is the structural representation of pavement structure provided by the utility model；

Wherein:

1-SBS modified asphalt concrete surface layer；2-tack coat；3-block rubber layer；4-semi-rigid type base.

Detailed description of the invention

In conjunction with drawings and Examples, this utility model is further described, but this utility model is not limited only to down The embodiment stated.

Seeing Fig. 1, this utility model provides a kind of permanent seal cooling Asphalt Pavement Structure for Country Highways, including from top to bottom depending on Secondary SBS modified asphalt concrete surface layer 1, block rubber layer 3 and the semi-rigid type base 4 being laid on soil matrix；SBS modified pitch mixes Tack coat 2 is all laid between solidifying soil surface layer 1 and block rubber layer 3 and between block rubber layer 3 and semi-rigid type base 4.

Wherein, the grating of SBS modified asphalt concrete surface layer 1 is AC-13；The thickness of SBS modified asphalt concrete surface layer 1 It is 4cm～5cm；Block rubber layer 3 is melted condensation by little tire shoddy and forms；The thickness of block rubber layer 3 is 4～5cm.Semi-rigid Basic unit 4 is cement stabilized macadam base or lime stabilization crushed rock base course, and the thickness of semi-rigid type base 4 is 10～15cm, semi-rigid The intensity of basic unit 4 is more than 2.0MPa and less than 3.0MPa.The intensity of soil matrix is more than 60MPa.Tack coat 2 is that modified emulsifying asphalt glues Knot layer 2；The spreading amount of tack coat 2 is 0.3～0.6L/m²。

Claims

1. a permanent seal cooling Asphalt Pavement Structure for Country Highways, it is characterised in that: described permanent seal cooling rural highway bituminous paving is tied Structure includes SBS modified asphalt concrete surface layer, block rubber layer and the semi-rigid type base being laid on the most successively on soil matrix； Bonding is all laid between described SBS modified asphalt concrete surface layer and block rubber layer and between block rubber layer and semi-rigid type base Layer.

Permanent seal cooling Asphalt Pavement Structure for Country Highways the most according to claim 1, it is characterised in that: described SBS modification drips The grating of blue or green concrete topping is AC-13；The thickness of described SBS modified asphalt concrete surface layer is 4cm ~ 5cm.

Permanent seal cooling Asphalt Pavement Structure for Country Highways the most according to claim 2, it is characterised in that: described block rubber layer by Little tire shoddy melts condensation and forms；The thickness of described block rubber layer is 4 ~ 5cm.

4. according to the permanent seal cooling Asphalt Pavement Structure for Country Highways described in claim 1 or 2 or 3, it is characterised in that: described half just Property basic unit is cement stabilized macadam base or lime stabilization crushed rock base course, and the thickness of described semi-rigid type base is 10 ~ 15cm, described The intensity of semi-rigid type base is more than 2.0MPa and less than 3.0MPa.

Permanent seal cooling Asphalt Pavement Structure for Country Highways the most according to claim 4, it is characterised in that: the intensity of described soil matrix More than 60MPa.

Permanent seal cooling Asphalt Pavement Structure for Country Highways the most according to claim 5, it is characterised in that: described tack coat is to change Property emulsified asphalt tack coat；The spreading amount of described tack coat is 0.3 ~ 0.6L/m²。