|Table of Contents|

Fractal characteristics of aggregate distribution in dense-gradation asphalt mixture(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2011年02期
Page:
12-16
Research Field:
Publishing date:
2011-04-30

Info

Title:
Fractal characteristics of aggregate distribution in dense-gradation asphalt mixture
Author(s):
SU Xiu-li1; 2;  LI Bo3;  LIU Jian-xun1; 2;  LI Xiao-juan1
1. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China; 2. Gansu Road and Bridge Construction Group Co Ltd, Lanzhou 730030, Gansu, China; 3. School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070, Gansu, China
Keywords:
road engineering;  dense-gradation asphalt mixture;  fractal dimension;  fuzzy;  gradation;  self-similarity
PACS:
U416.2
DOI:
-
Abstract:
In order to determine the conditions of fractal dimension of aggregate distribution in the dense gradation asphalt mixture, the fractal dimension of aggregate distribution was calculated in the figure with double-logarithmic coordinate of aggregate gradation by the least square method. Based on this, the fractal characteristics of aggregate distribution composed with fractal dimension and self-similarity in dense-gradation asphalt mixture was judged by the defined fuzzy fractal dimension in Technical Specification for Construction of Highway Asphalt Pavements. The results show that: aggregate distribution in the asphalt mixtures is a fuzzy fractal system, which does not have a strict self-similarity, but the self-similarity is at the statistical sense; the fractal dimension is varied in the range of 2.33～2.59 and the fractal dimension of upper limit of gradation is higher than that of lower limits of gradation within the same scale; The fractal of dense-graded aggregate is one-dimensional and only one fractal dimension can represent the fractal characteristics of the gradation. 2 tabs, 6 figs, 13 refs.

References:

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Last Update: 2011-04-30