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第 38 卷第 3 期吉林大学学报( 工学版) Vol. 38 No. 3
2008 年 5 月 Journal of Jilin University ( Engineering and Technology Edition) May 2008
沥青低温粘弹性能的预测
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詹小丽,张肖宁,卢亮
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(华南理工大学土木与交通学院,广州 510640)
摘要:鉴于弯曲梁流变仪和动态剪切流变仪在研究沥青低温粘弹性能时存在一定局限性,通
过动态剪切流变仪测定常温下沥青的动态粘弹性能,利用时温转换原则和沥青动静态粘弹函
数的转换关系,转换为沥青的低温粘弹性能,与弯曲梁流变仪在低温下直接测定的低温蠕变性
能相比较,分析了两者试验结果的相关性。结果表明,通过常温下沥青的动态粘弹性能可以很
好地预测沥青的低温粘弹性能,并且可以得到更宽广的时间范围内沥青的低温粘弹性能。
关键词:道路工程;沥青;低温性能;时温转换原则;动态剪切流变仪;弯曲梁流变仪
中图分类号:U414. 1 文献标识码:A 文章编号:1671 5497 (2008) 03 0530 05
Prediction of low temperature viscoelastic properties of asphalt
Zhan Xiao li ,Zhang Xiao ning ,L u Liang
( School of Civil and T rans portation Engineering , S outh China University of Technology , Guangz hou 510640 , China)
Abstract :There are some limitations in st udying the low temperat ure properties of the asp halt by
means of t he bending beam rheometer (BBR) and t he dynamic shear rheometer (DSR) , so t he samples
of asphalt were tested by DSR at normal temperat ure and t he obtained dynamic rheological properties
were converted to the viscoelastic p roperties at low temperat ure using t he time temperature
transformation principle and t he transformation relation between t he static and dynamic viscoelastic
f unctions. The result s obtained by such a indirect way pared wit h t he low temperature
properties obtained directly by t he BBR ,