|Table of Contents|

Nonlinear prediction of asphalt thermal and oxygen aging(PDF)

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

Issue:
2009年04期
Page:
13-15
Research Field:
Publishing date:
2009-08-20

Info

Title:
Nonlinear prediction of asphalt thermal and oxygen aging
Author(s):
JI Xiao-ping1; HOU Yue-qin2; ZHENG Nan-xiang1
1.Key Laboratory for Special Area Highway Engineering of Ministry of Education,Chang’an University,Xi’an 710064,Shaanxi,China;2.Department of Building Engineering,Qinghai University,Xining 810016,Qinghai,China
Keywords:
road engineering;  asphalt aging;  aging equation;  aging rate
PACS:
U414
DOI:
-
Abstract:
The current thermal and oxygen aging prediction of asphalt have some deficiencies. So the variation characteristics of penetration, softening point, viscosity, ductility of KLMY 90# asphalt in thermal and oxygen aging are studied, and the nonlinear aging equation is developed. The results show that the nonlinear aging equation can predict the attenuation of penetration, soft point, viscosity and ductility in thermal and oxygen aging, and can quantify the aging rate and the ultimate degree. The aging rate of penetration, softening point, ductility of asphalt reaches the peak at the beginning and becomes smaller as the variation of aging time, balances at last. 3 tabs, 2 figs, 9 refs.

References:

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Last Update: 2009-08-20