Super-viscose fiber wearing layer cold-mixed asphalt mixture and preventive maintenance method of asphalt pavement

A technology for cold mix asphalt and asphalt pavement, which is applied in the field of cold mix asphalt mixture of super viscous fiber wear layer and preventive maintenance of asphalt pavement, can solve the problems of inability to repair local diseases of the pavement, the scope of application of the process is small, and the durability of the pavement is low. Achieve high water resistance, fast construction, and improve adhesion.

Inactive Publication Date: 2016-10-12
JIANGSU TIANNUO ROAD MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the influence of material performance, construction level, traffic environment and natural environment, cold-mix asphalt mixture or cold-spray traditional preventive maintenance technology generally has low road surface durability, the average life span is only about 2 years, and the noise pollution is relatively large , the pavement has defects such as low anti-skid coefficient, fast attenuation speed, and small application range of the process; the pavement comprehensive performance of hot-mix asphalt mixture or thermal spray preventive maintenance technology is excellent, and the durability is good. The average life expectancy is about 3 to 4 years, but There are defects such as generally high cost, complicated process, high energy consumption, high pollution, and inability to repair local diseases of the road surface

Method used

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  • Super-viscose fiber wearing layer cold-mixed asphalt mixture and preventive maintenance method of asphalt pavement
  • Super-viscose fiber wearing layer cold-mixed asphalt mixture and preventive maintenance method of asphalt pavement
  • Super-viscose fiber wearing layer cold-mixed asphalt mixture and preventive maintenance method of asphalt pavement

Examples

Experimental program
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Effect test

Embodiment 1

[0025] The engineering summary of the application of this embodiment is: a road section in a certain country is a two-way four-lane first-class highway, and the design speed is 100Km / h. The original pavement is epoxy asphalt horseshoe grease macadam mixture SMA-13, the overall pavement structure is complete, and the main disease is network cracks with a width of 1-5mm. The preventive maintenance test of the super-viscous fiber wearing layer in this embodiment is selected to be implemented on this road section, and the designed thickness of the super-viscous fiber wearing layer is 11 mm.

[0026] 1), using special equipment for super viscous fiber wearing course to prepare super viscous fiber wearing course cold mix asphalt mixture;

[0027] The superviscosity fiber wear layer mixture used in this step is composed of aggregate, polymer modified emulsified asphalt, glass fiber, filler and water. The aggregate is made of basalt coarse aggregate produced by Shangpei Town Stone Fac...

Embodiment 2

[0046] The engineering summary of the application of this embodiment is: a road section in a certain province is a fourth-grade road with a road surface width of 6.5m and a design speed of 60Km / h. The original pavement is ordinary asphalt concrete AC-13, and the overall pavement structure is complete. The main defects are network cracks with a width of 1-5 mm and slight ruts with a depth of 5 mm. In this embodiment, the preventive maintenance test of the super-viscous fiber wearing layer is selected to be implemented on this road section, and the designed thickness of the super-viscous fiber wearing layer is 8mm.

[0047] 1), using special equipment for super viscous fiber wearing course to prepare super viscous fiber wearing course cold mix asphalt mixture;

[0048] The superviscosity fiber wear layer mixture used in this step is composed of aggregates, polymer modified emulsified asphalt, glass fibers, fillers and water. The aggregates are basalt coarse aggregates produced b...

Embodiment 3

[0067] The engineering summary of this embodiment is: a road section in a certain province is a third-class road with a road width of 7.5m and a design speed of 60Km / h. The original pavement is ordinary asphalt concrete AC-13, and the overall pavement structure is complete. The main diseases are asphalt film shedding, poor skid resistance, slight water damage and slight rutting with a depth of 5mm. In this embodiment, the preventive maintenance test of the super-viscous fiber wearing layer is selected to be implemented in this road section, and the designed thickness of the super-viscous fiber wearing layer is 14 mm.

[0068] 1), using special equipment for super viscous fiber wearing course to prepare super viscous fiber wearing course cold mix asphalt mixture;

[0069] The super viscous fiber wearing layer mixture used in this step is composed of aggregate, polymer modified emulsified asphalt, glass fiber, filler and water. The mixed aggregates (4.75mm-9.5mm) and fine aggre...

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Abstract

The invention relates to a pavement construction material and a pavement construction method, in particular to a cold-mixed asphalt mixture for a super-viscous fiber wear layer and a preventive maintenance method for an asphalt pavement. The composition and mass percentage of the ultra-viscosity fiber wearing layer cold mix asphalt mixture of the present invention are: polymer modified emulsified asphalt (9-15)%, aggregate (75-80)%, filler (0.5-3)% , fiber (0.1~0.3)%, rubber powder (0~3)%, water (5~10)%, the total amount is 100%. The material of the invention has good wear resistance, adhesion and water resistance, strong anti-crack ability of the construction road surface, good stability and convenient construction.

Description

technical field [0001] The invention relates to a pavement construction material and a pavement construction method, in particular to a cold-mixed asphalt mixture for a super-viscous fiber wear layer and a preventive maintenance method for an asphalt pavement. Background technique [0002] The design life of expressway pavement is usually 15 to 20 years. After delivery, it can be more than 10 years, and the shortest is 5 to 6 years. The surface layer needs to be repaired or maintained once. my country's expressway asphalt pavement has been used for more than 10 years in the early stage, and a considerable part has been used for more than 5 to 6 years. At the same time, due to various reasons such as the thinner asphalt surface layer of some highways, tight construction period, unreasonable structure, poor material quality, lax construction management or supervision, rapid increase in traffic volume after opening to traffic, and overloaded vehicles, etc. The existing express...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26E01C19/10E01C19/12C04B111/27C04B111/20
CPCC04B26/26C04B2111/0075C04B2111/2038C04B2111/27E01C19/10E01C19/12
Inventor 郭兆民封昕潘亚军李秋飞柳卫军肖护兵张玉贞
Owner JIANGSU TIANNUO ROAD MATERIAL TECH
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