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Dynamic mechanics performance of aged SBS modifiedasphalt(PDF)

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

Issue:
2009年01期
Page:
1-5
Research Field:
Publishing date:
2009-01-20

Info

Title:
Dynamic mechanics performance of aged SBS modifiedasphalt
Author(s):
CHEN Huaxin;  ZHOU Yan;  WANG Binggang
Key Laboratory for Special Area Highway Engineering of Ministry of Education, Changan University, Xian 710064, Shaanxi, China
Keywords:
road engineering;  SBS modified asphalt;  rollingthinfilmoven (RTFO) aging;  pressureagingvessel (PAV) aging;  dynamic mechanics performance;  test;  Fouriertransforminfrared spectroscopy(FTIR);  gelpermeationchromatography (GPC)
PACS:
U414.1
DOI:
-
Abstract:
Through the traditional test and dynamicshearrheometer(DSR) test of one base asphalt and four StyreneButadieneStyrene (SBS) modified asphalts, the test results of original, the rollingthinfilmoven (RTFO) aged and the pressureagingvessel (PAV) aged asphalt samples were discussed comparatively to discuss the aging influence of the dynamic mechanics performance of SBS modified asphalts. The results show that the traditional tests cant reflect the difference of the aging influence between the base asphalt and modified asphalt, but the DSR tests can accurately describe the aging influence of modified asphalt. The results of Fouriertransforminfraredspectroscopy(FTIR) and gelpermeationchromatography (GPC) tests indicate the aging mechanism, which SBS modified asphalt aging is due to oxidation and hardening of base asphalt and degradation of SBS, and the DSR tests can reveal the aging characteristic of polymer modified asphalt. 3 tabs, 13 figs, 8 refs.

References:

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Memo

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Last Update: 2009-01-20