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[1] Ding Haibo, Zhang Hua, Wang Chenping,. Effects of polyphosphoric acid modified asphalton the low-temperature cracking of asphalt mixtures [J]. Journal of Southeast University (English Edition), 2016, 32 (2): 215-218. [doi:10.3969/j.issn.1003-7985.2016.02.014]
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Effects of polyphosphoric acid modified asphalton the low-temperature cracking of asphalt mixtures()
多聚磷酸改性沥青对沥青混合料低温抗裂性能的影响
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
32
Issue:
2016 2
Page:
215-218
Research Field:
Traffic and Transportation Engineering
Publishing date:
2016-06-20

Info

Title:
Effects of polyphosphoric acid modified asphalton the low-temperature cracking of asphalt mixtures
多聚磷酸改性沥青对沥青混合料低温抗裂性能的影响
Author(s):
Ding Haibo1 Zhang Hua2 Wang Chenping1
1School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China
2Fuzhou Urban Planning and Design Research Institute, Fuzhou 350003, China
丁海波1 张华2 王郴平1
1西南交通大学土木工程学院, 成都 610031; 2福州市规划设计研究院, 福州 350003
Keywords:
asphalt mixture low temperature polyphosphoric acid disk-shaped compact tension
沥青混合料 低温 多聚磷酸 盘状紧凑拉伸
PACS:
U414
DOI:
10.3969/j.issn.1003-7985.2016.02.014
Abstract:
In order to determine whether polyphosphoric acid(PPA)can partially or completely substitute styrene-butadiene-styrene(SBS)modifier while it does not adversely affect the resistance to thermal cracking of the asphalt mixture, the low-temperature fracture properties of the PPA modified mixtures are evaluated and compared to the SBS modified mixtures. First, laboratory compacted test samples were tested by the indirect tensile test(IDT)and the newly developed fracture testing protocol, named as disk-shaped compact tension(DCT). Then, the effects of the test temperature and air-void ratio on the low-temperature fracture properties of asphalt mixtures were analyzed. The results show that the fracture resistance of the PPA modified mixtures is worse than that of the SBS modified mixtures. However, for those modified mixtures that use the PPA substituting part of the SBS modifier, a relatively low-temperature fracture resistance can be obtained compared with the mixture only using the SBS modifier.
为确定多聚磷酸(PPA)是否能部分或完全替代苯乙烯-丁二烯-苯乙烯(SBS)改性剂而不会对沥青混合料的低温性能产生不利的影响, 对PPA改性沥青混合料的低温断裂特性进行了评估, 且与SBS改性沥青混合料进行了比较.首先, 采用间接拉伸试验及新开发的断裂测试方法, 即盘状紧凑拉伸试验对室内成型试件进行了测试.然后, 分析了测试温度及空隙率对沥青混合料低温断裂特性的影响.结果表明, PPA改性沥青混合料的低温抗裂性能劣于SBS改性沥青混合料, 而PPA部分替代SBS改性剂制得的改性沥青混合料的低温断裂性能与仅采用SBS改性剂的混合料断裂性能相当.

References:

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Memo

Memo:
Biographies: Ding Haibo(1990—), male, graduate; Wang Chenping(corresponding author), male, doctor, professor, wangcp@my.swjtu.edu.cn.
Foundation item: The National Natural Science Foundation of China(No.51278060).
Citation: Ding Haibo, Zhang Hua, Wang Chenping. Effects of polyphosphoric acid modified asphalt on the low-temperature cracking of asphalt mixtures[J].Journal of Southeast University(English Edition), 2016, 32(2):215-218.doi:10.3969/j.issn.1003-7985.2016.02.014.
Last Update: 2016-06-20