|
|||||
|
|
| 测力延度在沥青低温性能指标研究中的应用 | |
| 引用本文： | 陈平,黄晓明,李丹.测力延度在沥青低温性能指标研究中的应用[J].公路交通科技,2005,22(7):6-9. |
| 作者姓名： | 陈平 黄晓明 李丹 |
| 作者单位： | 1. 南京长江第三大桥有限责任公司,江苏,南京,210028 2. 东南大学交通学院,江苏,南京,210096 3. 南京长江第三大桥指挥部,江苏,南京,210028 |
| 摘 要： | 低温性能是沥青性能的一个重要方面,因此,有必要对其评价指标加以研究。在对沥青测力延度的大量试验基础上,本文分析了基质沥青、改性沥青以及短期老化(RTFOT)和长期老化(PAV)后的拉伸特性机理。通过与SHRP低温劲度的相关性分析,确定的测力延度评价指标如下:(1)基质沥青:D1 F0(或|K0 K1|);(2)改性沥青:D Fz。并在与延度的比较中进一步说明了测力延度能更有效评价沥青的低温性能。 |
| 关 键 词： | 测力延度 峰值力 SHRP 低温性能 |
| 文章编号： | 1002-0268(2005)07-0006-04 |
| 修稿时间： | 2004年10月14 |
Application of Measuring-Stress Ductility in the Research of Asphalt Low-Temperature Performance Index |
|
| CHEN Ping,HUANG Xiao-ming,LI Dan.Application of Measuring-Stress Ductility in the Research of Asphalt Low-Temperature Performance Index[J].Journal of Highway and Transportation Research and Development,2005,22(7):6-9. | |
| Authors: | CHEN Ping HUANG Xiao-ming LI Dan |
| Abstract: | The low-temperature performance is an important aspect of the asphalt performance,therefore it is necessary to research its appraisal index.This paper analyses the tensile performance of the asphalt and modified asphalt including aging- asphalt.Compared with the stiffness of SHRP,the index of measuring-stress ductility determined is as follows:(1) Unmodified asphalt:D_1/F_0(or|K_0/K_1|);(2)modified asphalt:D/F_Z.And the result shows that the measuring-stress ductility is more effective in evaluation of low-temperature performance of asphalt compared with the simple ductility. |
| Keywords: | Measuring-stress ductility Maximum stress SHRP Low-temperature performance |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |