|Table of Contents|

Evaluated model and standard of segregation for asphalt mixture(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2010年02期
Page:
1-5
Research Field:
道路与铁道工程
Publishing date:
2010-04-20

Info

Title:
Evaluated model and standard of segregation for asphalt mixture
Author(s):
TANG Xian1; 3;  WANG She-liang1;  DAI Jing-liang2
1. School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, China; 2. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China; 3. Department of Highway Engineering, Shaanxi College of Communications Technology, Xi'an 710018, Shaanxi, China
Keywords:
pavement material;  asphalt mixture;  segregation model;  segregation index of potential energy;  segregation grade
PACS:
U414.75
DOI:
-
Abstract:
The behavioral laws among particles were analyzed by using the fundamental theory of particle mechanics. A segregation model of asphalt mixture was established by using the angle of repose when it was piled. The calculation equation about the segregation index of potential energy was deduced. The index instrument was developed. The segregation index for asphalt mixture with maximum nominal particle size 16 mm was detected, and the standard of the segregation index was summarized by comparing test under different temperature conditions. Test result shows that the segregation index of potential energy is about 0.200, the compaction rate is about 0.40 near CA0.5, and they have least values. The mixture holds good workability and compacted-ability, which can decrease sharply the segregation during construction. The segregation grades of asphalt mixture are divided into no segregation, low segregation, middle segregation and high segregation in view of the standard. So the evaluated model and standard can be used to detect and differentiate the segregation of asphalt mixture at the spot. 4 tabs, 2 figs, 10 refs.

References:

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Last Update: 2010-04-20