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Characteristics of SBS Modified Asphalt

Author: LiangXiaoLi
Tutor: ZhangZhengQi
School: Chang'an University
Course: Road and Railway Engineering
Keywords: SBS Modified bitumen Conventional indicators Rheological tests Temperature viscosity Test Characteristics
CLC: U414
Type: Master's thesis
Year: 2005
Downloads: 624
Quote: 8
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Abstract


In view of the existing roads in the evaluation of modified asphalt technology standard SBS modified asphalt pavement performance problems in this paper the use of existing asphalt evaluation , the choice of three different sources of domestic oil and six kinds of asphalt modifier ( 3 kind of linear SBS, 3种star SBS) modified bitumen was prepared in different experimental conditions penetration, softening point, ductility and other conventional tests and SHRP rheological tests. According to the test results , this article from bituminous high and low temperature performance starting discussed with SBS modified bitumen asphalt differences between the experimental analysis of the characteristics of modified asphalt , SBS modified bitumen discussed the indicators and variation factors . This study suggests that : under certain conditions , SBS modified bitumen modifier type properties of the law is not clear , star and line modifier modifier showed no significant between different ; with test conditions demanding ( low temperature performance test temperature decrease , increase high-temperature performance test temperature , etc.), linear and star modified asphalt modified asphalt significant difference between the gradual , star asphalt modifier to improve the performance of the line to be superior to modifier ; aging tests show a change in the aging process and does not reflect the performance of asphalt modified asphalt in the whole aging process performance changes . Based on the characteristics of modified asphalt testing , further analysis of the modified asphalt modification mechanism , pointing out that evaluation of modified asphalt must be considered indicators of the evaluation results of various tests . Modified bitumen for the future of effective and rational application provides a theoretical basis .

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