Construction process of interlaced complex fiber modified asphalt concrete surface layer

A technology of composite fiber and modified asphalt, which is applied to cohesive pavement paved on site, roads, roads, etc., to achieve the effects of improving durability, increasing viscosity, and improving high-temperature performance

Active Publication Date: 2015-06-10
HUITONG ROAD & BRIDGE CONSTR GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a construction process of interwoven composite fiber modified asphalt concrete surface, which can solve the high temperature stability, low temperature crack resistance, water stability and fatigue resistance of the asphalt concrete surface. question

Method used

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  • Construction process of interlaced complex fiber modified asphalt concrete surface layer
  • Construction process of interlaced complex fiber modified asphalt concrete surface layer
  • Construction process of interlaced complex fiber modified asphalt concrete surface layer

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Embodiment 1

[0040] as attached figure 1 As shown, a construction process of interwoven composite fiber modified asphalt concrete surface, specifically includes the following steps:

[0041] 1. Proportion design of interwoven modified asphalt mixture

[0042] The mix ratio design of interwoven modified asphalt mixture includes the target mix ratio design stage, the production mix ratio design stage and the production mix ratio verification stage. The amount of interwoven composite fiber is 0.3% of the total mass of asphalt mixture. In the process of mixing ratio design, the interwoven composite fiber is added in the "dry method" process. First, the interwoven composite fiber and aggregate are dry-mixed for 90 seconds to make them evenly dispersed in the mineral material, and then the matrix asphalt is added. Mix for 90s, finally add mineral powder, mix for 90s, and the total mixing time is 4.5min. The temperature control of the "dry" process during the test is shown in Table 1. The mine...

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Abstract

The invention discloses a construction process of an interlaced complex fiber modified asphalt concrete surface layer. The construction method specifically comprises the following steps: mixing an interlaced modified asphalt mixture; transporting the interlaced modified asphalt mixture; paving the interlaced modified asphalt mixture; grinding the interlaced modified asphalt mixture; carrying out joint treatment; maintaining and carrying out traffic control. According to the construction process disclosed by the invention, the asphalt concrete surface layer has high temperature stability, low-temperature crack resistance as well as water stability, fatigue resistance, and the like.

Description

technical field [0001] The invention relates to the field of highway construction, in particular to a construction method for interwoven composite fiber modified asphalt concrete surface. Background technique [0002] In recent years, the highway network with high highways as the main line has developed rapidly. Asphalt pavement has been widely used in my country's highways due to its excellent characteristics such as smooth surface, no joints, comfortable driving, low noise, short construction period and convenient maintenance. However, with the rapid development of the national economy, the rapid growth of traffic volume and the increasing vehicle load, higher and higher requirements are put forward for the performance of expressway asphalt pavement. , ruts, cracks, oil flooding, looseness and other diseases have caused huge economic losses and left hidden dangers for driving. [0003] As a viscoelastic material, asphalt has a relatively low molecular weight and a wide di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C7/26C04B26/26
Inventor 张忠山蔡献东岳静芳肖淑青禹海龙崔静张菊峰赵洪宇李艳明梁志强尹江媛张硕欣
Owner HUITONG ROAD & BRIDGE CONSTR GROUP
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