基于微观结构量化的SBS改性沥青分析

Novel performance measurements of SBS modified asphalt based on microstructure pictures

摘要:

针对SBS（苯乙烯-丁二烯-苯乙烯嵌段共聚物）改性沥青显微结构的量化研究方法，以SBS改性沥青偏光400倍显微结构图为研究对象，在已有量化分析方法的基础上，提出一种定量评价SBS改性沥青微观结构新方法。结果表明：新方法操作相对简单，可从微观角度量化分析不同改性剂对SBS改性沥青性能影响，结论与实验结果一致。

Abstract:

The objective of this paper is to establish novel quantitative performance measurements for SBS (styrene-butadiene-styrene block copolymer) modified asphalt based on microstructure pictures of asphalt specimens. By magnifying pictures 400 times via microscope, two new measurements including area ratio of modifier and homogeneity of modifier distribution were tested for asphalt specimens with three vary modifier. Then the relationship between two new measurements and traditional measurements including penetration number, ductility rotational and viscosity rotary were investigated. The results indicated that they have a good correlation. It was concluded that quantitative measurements through microstructure pictures are a reliable and relatively easy method to evaluate performance of asphalt.