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| 基于蠕变试验计算沥青的低温松弛弹性模量 | |
| 引用本文： | 薛忠军,张肖宁,詹小丽,王佳妮,赵影.基于蠕变试验计算沥青的低温松弛弹性模量[J].华南理工大学学报(自然科学版),2007,35(2):64-68. |
| 作者姓名： | 薛忠军 张肖宁 詹小丽 王佳妮 赵影 |
| 作者单位： | 1. 哈尔滨工业大学,交通科学与工程学院,黑龙江,哈尔滨,150090 2. 华南理工大学,道路工程研究所,广东,广州,510640 3. 吉林省交通建设集团有限公司,吉林,长春,130021 |
| 基金项目： | 交通部西部交通建设科技项目(2001-318-000-38) |
| 摘 要： | 为了利用易操作的试验得到沥青的低温松弛弹性模量,采用沥青弯曲梁流变仪(BBR)测得沥青的蠕变柔量,通过对蠕变试验数据在时域内进行离散,根据蠕变与松弛之间的本构关系建立松弛弹性模量和蠕变柔量的数值迭代表达式.从迭代表达式可以计算出沥青在基准温度下的松弛弹性模量.使用时温等效换算法则可以得到不同温度下的松弛弹性模量主曲线,分析松弛弹性模量主曲线特性可以评价沥青的低温性能,为工程上选择合适的沥青提供参考. |
| 关 键 词： | 沥青 蠕变柔量 松弛弹性模量 弯曲梁流变仪 |
| 文章编号： | 1000-565X（2007）02-0064-05 |
| 修稿时间： | 2006-06-29 |
Calculation of Low-Temperature Relaxed Modulus of Elasticity for Bitumen via Creep Test |
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| Xue Zhong-jun,Zhang Xiao-ning,Zhan Xiao-li,Wang Jia-ni,Zhao Ying.Calculation of Low-Temperature Relaxed Modulus of Elasticity for Bitumen via Creep Test[J].Journal of South China University of Technology(Natural Science Edition),2007,35(2):64-68. | |
| Authors: | Xue Zhong-jun Zhang Xiao-ning Zhan Xiao-li Wang Jia-ni Zhao Ying |
| Institution: | 1. School of Communication Science and Engineering, Harbin Institute of Tech. , Harbin 150090, Heilongjiang, China; 2. Institute of Road Engineering, South China Univ. of Tech. , Guangzhou 510640, Guangdong, China; 3. Jilin Communication Construction Group Corp. , Changchun 130021, Jilin, China |
| Abstract: | In order to obtain the low-temperature relaxed modulus of elasticity for bitumen by tests with easy manipulation,the blending beam rheometer(BBR) was used to measure the creep compliance.The experimental data of BBR were then discretized in time domain.According to the constitutive relationship between the creep and the relaxation,a numerical iteration expression was thus proposed to describe the relationship between the relaxed modulus of elasticity and the creep compliance.By the proposed expression,the relaxed modulus of elasticity for bitumen at the fiducial temperature was further calculated.Moreover,the main curves of the relaxed modulus of elasticity at different temperatures were drawn via the time-temperature equivalent principle.The characteristics of the main curve were finally analyzed and were used to evaluate the low-temperature performance of bitumen,thus providing some references for making the right choice of bitumen in practical engineering. |
| Keywords: | bitumen creep compliance relaxed modulus of elasticity bending beam rheometer |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |