基于灰色模型的沥青混合料低温指标预测
作者:
作者单位:

1.内蒙古大学 交通学院,内蒙古 呼和浩特 010070;2.内蒙古大学 桥梁检测与维修 加固工程技术研究中心,内蒙古 呼和浩特 010070

作者简介:

朱运鼎(1999—), 男, 山东济宁人, 内蒙古大学硕士生. E-mail:936724979@qq.com

通讯作者:

银 花(1976—), 女, 内蒙古通辽人, 内蒙古大学副教授, 硕士生导师, 博士. E-mail:baoyinhua76@126.com

中图分类号:

U414

基金项目:

内蒙古自然科学基金资助项目(2020MS01013); 内蒙古交通科技资助项目(222000-5206034); 国家自然科学基金资助项目(11562013)


Prediction of Low Temperature Index of Asphalt Mixture Based on Grey Model
Author:
Affiliation:

1.Transportation College, Inner Mongolia University, Hohhot 010070, China;2.Research Center for Bridge Testing, Maintenance and Reinforcement Engineering Technology, Inner Mongolia University, Hohhot 010070, China

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    摘要:

    为综合考虑沥青低温性能对沥青混合料低温性能的影响,并实现对混合料低温性能的预测,采用弯曲梁流变试验及常规低温试验测定了5种沥青及其混合料的低温评价指标,并与约束试件温度应力试验结果进行了灰色关联分析,建立了分数阶灰色预测模型.结果表明:沥青低温连续分级温度、玻璃态转变温度、脆点、不同温度下的蠕变速率和耗散能比对混合料低温性能影响较大;冻断温度和转折点温度FGM(1, 4)模型的误差分别为1.83%和3.71%,精度为优,预测结果合理.

    Abstract:

    In order to comprehensively consider the influence of low temperature performance of asphalt on the low temperature performance of asphalt mixture, and predict low temperature performance of asphalt mixture. The low temperature evaluation indexes of five kinds of asphalt and mixture were determined by bending beam rheological test and conventional low temperature test. Grey correlation analysis was introduced with the results of thermal stress restrained specimen test and a fractional grey prediction model was established. The results show that the low temperature continuous classification temperature, glass transition temperature, brittle point, creep rate and dissipation energy ratio at four temperatures have great influence on the low temperature performance of asphalt mixture. The errors of FGM (1,4) model for freezing temperature and turning point temperature are 1.83% and 3.71% respectively, indicating excellent accuracy and reasonable prediction results.

    表 7 FGM(1,1)和FGM(1,4)模型预测的冻断强度与实测值的比较Table 7 Comparison between predicted σF from FGM(1,1), FGM(1,4) model and actual value
    表 1 沥青的技术指标Table 1 Technical indexes of asphalts
    表 6 FGM(1,1)和FGM(1,4)模型预测的冻断温度与实测值的比较Table 6 Comparison between predicted TF from FGM(1,1), FGM(1,4) model and actual value
    表 3 沥青的常规低温指标Table 3 Conventional low temperature indexes of asphalts
    表 8 FGM(1,1)和FGM(1,4)模型预测的转折点温度与实测值的比较Table 8 Comparison between predicted TZ from FGM(1,1), FGM(1,4) model and actual value
    图1 长期老化后沥青的低温流变指标Fig.1 Low temperature rheological indexes of asphalts after long-term aging
    表 5 沥青与沥青混合料低温评价指标的灰色关联度Table 5 Grey correlation degree of low temperature evaluation index of asphalts and asphalt mixtures
    表 4 沥青混合料的TSRST结果Table 4 TSRST results of asphalt mixtures
    表 2 沥青混合料的级配组成Table 2 Gradation compositions of asphalt mixture w/%
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朱运鼎,银花.基于灰色模型的沥青混合料低温指标预测[J].建筑材料学报,2023,26(10):1104-1110

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  • 收稿日期:2022-11-25
  • 最后修改日期:2023-02-07
  • 在线发布日期: 2023-11-14
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