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Method for designing mix proportion of bituminous mixture for ultra-thin wearing course

A technology of asphalt mixture and mix ratio design, which is applied to cohesive pavement paved on site, roads, roads, etc., can solve problems such as shear index, looseness, and peeling of asphalt mixture that are not involved, and prevent early damage to the road surface , Excellent high temperature performance, good shear performance effect

Inactive Publication Date: 2017-01-11
XIAN HIGHWAY INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in terms of its road performance indicators, considering the use characteristics of thin-layer overlay asphalt mixture, in order to prevent loosening and peeling during use, there are clear requirements for the water stability of the mixture, but none of them involve asphalt mixing. material shear index

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  • Method for designing mix proportion of bituminous mixture for ultra-thin wearing course
  • Method for designing mix proportion of bituminous mixture for ultra-thin wearing course
  • Method for designing mix proportion of bituminous mixture for ultra-thin wearing course

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Embodiment Construction

[0038] Embodiments of the present invention will be described in detail below in conjunction with examples, but those skilled in the art will understand that the following examples are only used to illustrate the present invention, and should not be considered as limiting the scope of the present invention.

[0039] The invention provides a method for designing the mixing ratio of an ultra-thin wearing layer asphalt mixture, which comprises the following steps:

[0040] Step 1, select the raw material of the asphalt mixture for the ultra-thin wear layer, the raw material includes asphalt and mineral aggregate;

[0041] Step 2, design the mix ratio of the ultra-thin wearing layer asphalt mixture;

[0042] Step 2a, designing the gradation of the asphalt mixture in the ultra-thin wearing layer;

[0043] Step 2b, determine the optimum asphalt ratio of ultra-thin wearing layer asphalt mixture;

[0044] Step 3, prepare the ultra-thin wearing layer asphalt mixture according to the de...

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Abstract

The invention discloses a method for designing a mix proportion of a bituminous mixture for an ultra-thin wearing course. The method comprises the following steps: step 1, selecting raw materials comprising bitumen and ore aggregate which comprises coarse aggregate, fine aggregate and filler; step 2, designing the mix proportion of the bituminous mixture for the ultra-thin wearing course; step 2a, determining grading; step 2b, determining the optimal bitumen-aggregate ratio; step 3, preparing the bituminous mixture for the ultra-thin wearing course according to the designed mix proportion of the bituminous mixture for the ultra-thin wearing course and inspecting whether the shearing resistance of the bituminous mixture meets the shearing resistance standard for roads. On the basis of shearing resistance for roads, a road surface destroy form is integrated into the design method, inspection of various properties and standards of the bituminous mixture for the ultra-thin wearing course in the process of designing of the mix proportion of the bituminous mixture for the ultra-thin wearing course is put forward, and the mix proportion of the bituminous mixture for the ultra-thin wearing course is designed reasonably on the basis.

Description

technical field [0001] The invention relates to the technical field of road and urban road design, in particular to a method for designing the mixing ratio of an ultra-thin wearing layer asphalt mixture. Background technique [0002] my country's cement concrete pavement was first built in the mid-1960s. Due to the advantages of high strength, long service life, low maintenance costs, and strong wear resistance, cement concrete pavement has developed rapidly in the country, and my country has become the world's largest Cement concrete pavement has the most miles in the country. [0003] Due to the many joints of the cement concrete pavement and the high elastic modulus of the material, the vehicle will vibrate greatly when driving, especially when driving at high speed, it will generate a lot of noise, which will bring great noise pollution to the surrounding environment. Therefore, in order to meet the needs of transportation development, improve the road service level, and...

Claims

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Application Information

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IPC IPC(8): E01C7/35
CPCE01C7/353
Inventor 李晓娟韩森李渊陈亚杰徐希娟吕晓霞刘洪辉李娜韩微微王旭
Owner XIAN HIGHWAY INST
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