|本期目录/Table of Contents|

[1]乔 阳,刘力侨.TB沥青砾石混合料的低温抗裂性能[J].合成橡胶工业,2023,4:341-344.
　QIAO Yang,LIU Li-qiao.Low-temperature crack resistance of TB gravel asphalt mixture[J].China synthetic rubber industy,2023,4:341-344.
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TB沥青砾石混合料的低温抗裂性能(PDF)

《合成橡胶工业》[ISSN:1000-1255/CN:62-1036/TQ]

期数:
2023年4期
页码:
341-344
栏目:
出版日期:
2023-07-15

文章信息/Info

Title:
Low-temperature crack resistance of TB gravel asphalt mixture
文章编号:
1000-1255（2023）04-0341-04
作者:
乔 阳1; 刘力侨2
1.中国市政工程中南设计研究总院有限公司，武汉 430010； 2.四川川黔高速公路有限公司，四川 泸州 646500
Author(s):
QIAO Yang1;  LIU Li-qiao2
1. Central South China Municipal Engineering Design and Research Institute Co Ltd, Wuhan 430010, China; 2. Sichuan Chuanqian Expressway Co Ltd, Luzhou 646500, China
关键词:
TB沥青; 砾石; 沥青混合料; 低温抗裂性能; 破坏类型
Keywords:
TB asphalt;  gravel;  asphalt mixture;  low-temperature crack resistance;  damage type
分类号:
U 414
DOI:
DOI:10.19908/j.cnki.ISSN1000-1255.2023.04.0341
文献标识码:
B
摘要:
将所制备的TB沥青用于砾石沥青混合料的配合比设计，基于小梁弯曲试验对TB沥青砾石混合料的低温抗裂性能进行了评价，并与基质沥青砾石混合料进行了对比。结果表明，在较高温度下制备TB沥青使其黏弹性遭受一定程度的损失，软化点略高，但低温性能和储存稳定性优异；TB沥青的密度相较于基质沥青要小，因此TB砾石沥青混合料的最佳沥青用量较大；TB沥青砾石混合料的应变能密度在0 ℃、-10 ℃和-25 ℃下分别比基质砾石沥青混合料提高了68%、147%和65%；发生脆性破坏的温度砾石沥青混合料在0 ℃附近，而TB砾石沥青混合料在-25 ℃。TB沥青有效提高了砾石沥青混合料的低温抗裂性能。
Abstract:
The prepared TB asphalt was used for mix design of gravel asphalt mixture, and low-temperature crack resistance performance of the TB asphalt gravel mixture was evaluated based on small beam bending test, and compared with matrix asphalt gravel mixture. The results showed that the viscoelasticity of TB asphalt suffered a certain loss when it was prepared at a higher temperature, and its softening point was slightly higher, but low-temperature performance and storage stability were excellent. The density of TB asphalt was smaller than that of base asphalt, so the optimal asphalt amount for TB gravel asphalt mixture was larger. The strain energy density of TB asphalt gravel mixture was 68%, 147% and 65% higher than that of matrix gravel asphalt mixture at 0 ℃, -10 ℃ and -25 ℃ respectively. The temperature at which brittle failure occurs was around 0 ℃ for gravel asphalt mixture, while -25 ℃ for TB gravel asphalt mixture. TB asphalt effectively improved the low-temperature crack resistance of gravel asphalt mixture.

参考文献/References

［1］ 刘丽. 沥青胶浆技术性能及评价方法研究［D］. 西安： 长安大学， 2004.［2］ Hicks R G， Cheng D， Duffy T， et al. Evaluation of rubberized asphalt terminal blends and a preliminary study on warm mix［J］. Construction and Building Materials， 2010.［3］ Nazzal M D， Iqbal M T， Kim S S， et al. Evaluating the mechanical properties of terminal blend tire rubber mixtures incorporating RAP［J］. Construction and Building Materials， 2017， 138： 427-433.［4］ Yang Qiao. Research progress of Buton rock asphalt in road pavement materials［J］. E 3 S Web of Conferences， 2020， 198（12）： 01007.［5］ 邵显智， 谭忆秋， 孙立军. 几种矿粉指标与沥青胶浆的关联分析［J］. 公路交通科技，2005，22（2）： 10-13.［6］ 张争奇， 李平， 王秉纲. 纤维和矿粉对沥青胶浆性能的影响［J］. 长安大学学报（自然科学版）， 2005（5）： 15-18.［7］ Yu Xun， Huang Jingbo. Study on low-temperature performance of asphalt mixture impacted by modified asphalt and polyester fibers［J］. Applied Mechanics and Materials， 2012， 204/205/206/207/208： 3886-3889.［8］ Wang Hao， Wang Jian， Chen Jiaqi. Micromechanical analysis of asphalt mixture fracture with adhesive and cohesive failure［J］. Engineering Fracture Mechanics， 2014， 132： 104-119.

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更新日期/Last Update: 1900-01-01