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[1] Zhang Jiupeng, Liu Guoqiang, Du Hui, Pei Jianzhong, et al. Rheological properties of warm mix asphalt binderby DSR test at medium temperature [J]. Journal of Southeast University (English Edition), 2015, 31 (3): 384-388. [doi:10.3969/j.issn.1003-7985.2015.03.015]
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Rheological properties of warm mix asphalt binderby DSR test at medium temperature()
基于DSR试验的WMA沥青结合料中温流变性能分析
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
31
Issue:
2015 3
Page:
384-388
Research Field:
Traffic and Transportation Engineering
Publishing date:
2015-09-20

Info

Title:
Rheological properties of warm mix asphalt binderby DSR test at medium temperature
基于DSR试验的WMA沥青结合料中温流变性能分析
Author(s):
Zhang Jiupeng1, Liu Guoqiang1, Du Hui1, Pei Jianzhong1, Ma Xuejun2
1School of Highway, Chang’an University, Xi’an 710064, China
2Beijing Jiaoke Transport Consultants Ltd., Beijing 100191, China
张久鹏1, 刘国强1, 杜慧1, 裴建中1, 马学军2
1长安大学公路学院, 西安710064; 2北京交科公路勘察设计研究院有限公司, 北京100191
Keywords:
warm mix asphalt;  dynamic shear rheometer(DSR)test;  medium temperature;  rheological property;  fatigue factor
温拌沥青;  动态剪切试验;  中温;  流变性能;  疲劳因子
PACS:
U414
DOI:
10.3969/j.issn.1003-7985.2015.03.015
Abstract:
The rheological properties including the complex modulus G* and the phase angle δ of matrix and warm mix asphalt(WMA)binders were measured by using the dynamic shear rheometer(DSR)test at the medium temperature ranging from 16 to 40 ℃, and the relationships between the fatigue factor G*sinδ and the matrix binder property, WMA additive and test temperature were established. It is found that G* decreases with the increasing temperature while δ increases inversely, and G* of the asphalt binder with high WMA additive dosage is large, and δ is small. G*sinδ exponentially decreases with the increasing temperature and linearly increases with the increase in additive dosage, and the amplitudes of variation are large at low temperatures and high additive dosages. The effect of WMA additive on the rheological property is more remarkable for the matrix asphalt binder with low G*. Besides, aging has a great effect on the property of matrix asphalt binder, and a slight effect on the interaction between asphalt and additive. The high additive dosage can increase the fatigue cracking potential of the asphalt binder.
采用动态剪切流变仪(DSR)在16~40 ℃中等温度下测试、分析了基质沥青及其温拌沥青的复数剪切模量G*、相位角δ等流变性能, 进而建立了疲劳因子G*sinδ与基质沥青性质、试验温度和拌剂掺量的关系模型.结果表明, 复数剪切模量G*随温度升高而减小, 而相位角δ随温度升高而增大;温拌剂掺量越高, 复数剪切模量G*越大, 相位角越小;疲劳因子G*sinδ随着温度升高呈指数减少, 随温拌剂掺量增加呈线性增大;在较低温度和较高掺量下, 疲劳因子的变化幅度更大;基质沥青复数模量越小, 温拌剂对温拌沥青流变性能的影响更为显著, 而老化对基质沥青性能的影响高于对沥青-温拌剂相互作用的影响;掺量越高的温拌沥青结合料, 越容易疲劳开裂.

References:

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Memo

Memo:
Biographies: Zhang Jiupeng(1983—), male, doctor, associate professor, zhjiupeng@163.com; Pei Jianzhong(corresponding author), male, doctor, professor, peijianzhong@126.com.
Foundation items: The National Natural Science Foundation of China(No.51408043), the Natural Science Foundation of Shaanxi Province(No.2014JQ7278).
Citation: Zhang Jiupeng, Liu Guoqiang, Du Hui, et al. Rheological properties of warm mix asphalt binder by DSR test at medium temperature[J].Journal of Southeast University(English Edition), 2015, 31(3):384-388.[doi:10.3969/j.issn.1003-7985.2015.03.015]
Last Update: 2015-09-20