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SBS改性沥青相态粒径与发育温度及时间的关系
林江涛1,樊亮1,申全军2,李永振1,赵品晖3
(1.山东省交通科学研究院山东省新型道路材料工程实验室,山东济南 250101;2.山东省高速集团有限公司创新研究院, 山东济南 250000;3.山东建筑大学交通工程学院,山东济南 250101)
摘要:
为研究SBS改性沥青相态粒径与发育温度及时间的关系,提高SBS改性沥青热储存稳定检测效率,对试验制备的不同种类SBS改性沥青进行荧光显微相态观测及性能检测,利用基于连通域标记算法的自主编译图像识别程序对荧光显微相态粒径进行量化确定。结果表明:SBS改性沥青的相态粒径与发育时间符合良好的线性关系,决定系数R2高于0.96,时间、温度对相态粒径具有显著互补性;相态粒径对改性沥青离析试验结果具有重要影响,依据相态粒径范围将热储存稳定性划分为稳定、亚稳定及不稳定等3种状态,可以相态粒径代替离析指标作为快速表征SBS改性沥青热储存稳定状态的控制参数;以达到1.8、1.6 μm相态粒径作为基准条件,建立关于发育温度、时间参数的线性回归方程,预测与实测值的绝对时间偏差基本控制在30 min内,相对偏差基本控制在10%内;以1.8、1.6 μm等相态粒径确定SBS改性沥青生产发育温度及时间的方法,其改性沥青路用性能均衡、热储存稳定性良好。
关键词:  道路工程  SBS改性沥青  荧光显微相态  相态粒径  储存稳定性  发育温度  发育时间
DOI:10.3969/j.issn.1673-5005.2024.02.023
分类号:
文献标识码:A
基金项目:
LIN Jiangtao1, FAN Liang1, SHEN Quanjun2, LI Yongzhen1, ZHAO Pinhui3
(1.Key Laboratory for Road Structure and Material of Shandong Province in Shandong Transportation Institute, Jinan 250101, China;2. Innovation Research Institute of Shandong Expressway Group Company Limited, Jinan 250000, China;3.School of Transportation Engineering in Shandong Jianzhu University, Jinan 250101, China)
Abstract:
In order to study the relationship between phase particle size and development temperature and time of SBS-modified asphalt, and improve the detection efficiency of thermal storage stability of SBS modified asphalt, the fluorescence microscopic phase observation and performance detection of different types of SBS modified asphalt were carried out. The self-compiled image recognition program based on the connected domain labeling algorithm was used to quantify the fluorescence microscopic phase size. The results show that the phase particle size of SBS modified asphalt is in good linear relationship with the development time, and the coefficient of determination R2 is higher than 0.96. The time and temperature have significant complementarity to the phase particle size. The phase particle size has an important influence on the segregation test results of modified asphalt. According to the phase particle size range, the thermal storage stability is divided into three states:stable, metastable and unstable. The phase particle size can replace the segregation index as the control parameter to quickly characterize the thermal storage stability of SBS modified asphalt. The linear regression equation of development temperature and time parameters is established with the phase particle size of 1.8 and 1.6 μm as the reference condition. The absolute time deviation between the predicted and measured values is basically controlled within 30 min, and the relative deviation was basically controlled within 10%. The method of determining the development temperature and time of SBS modified asphalt production with phase particle size of 1.8 and 1.6 μm, the modified asphalt has balanced road performance and good thermal storage stability.
Key words:  road engineering  SBS modified asphalt  fluorescence microscopic phase  phase particle size  storage stability  development temperature  development time
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