|Table of Contents|

Test method of SBS content in modified asphalt(PDF)

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

Issue:
2012年03期
Page:
1-8
Research Field:
道路与铁道工程
Publishing date:

Info

Title:
Test method of SBS content in modified asphalt
Author(s):
WU Jian-min1;  ZHANG Xue-lin2;  CHEN Zhong-da1;  LIN Jie1;  ZHANG Hong-liang1
1. Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an 710064, Shaanxi, China; 2. Transportation Bureau of Zhucheng, Zhucheng 262200, Shandong, China
Keywords:
road engineering;  modified asphalt;  SBS content;  performance index;  grey correlation analysis method;  weight coefficient
PACS:
U416.217
DOI:
-
Abstract:
The performance indexes of three kinds of base asphalts modified with different SBS contents were tested, grey correlation analysis method was used, SBS content was as reference sequence, the performance indexes of modified asphalt, such as penetration, softening point, ductility, elasticity recovery and kinematic viscosity at 135 ℃, were as comparison sequence, correlation grades between SBS content and main performance indexes were calculated and sequenced. The weight of each performance index was calculated by normalizing correlation grade coefficients, the relationship between conventional performance indexes and SBS content was set up, a test method of SBS content based on multiple indexes was put forward, and the method was validated by using sample groups with known SBS contents. Analaysis result indicates that the main performance indexes with significant correlation to SBS content are softening point, elasticity recovery and kinematic viscosity at 135 ℃. The absolute deviations of SBS contents for three kinds of modified asphalts are all within 0.15%, so the method is reliable. 13 tabs, 20 refs.

References:

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Last Update: 2012-06-30