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[1] Tan Yiqiu, Shan Liyan, Fang Jun, Zhang Xingyou, et al. Anti-cracking mechanism of diatomite asphaltand diatomite asphalt mixture at low temperature [J]. Journal of Southeast University (English Edition), 2009, 25 (1): 74-78. [doi:10.3969/j.issn.1003-7985.2009.01.016]
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Anti-cracking mechanism of diatomite asphaltand diatomite asphalt mixture at low temperature()
硅藻土沥青及沥青混合料低温抗裂机理
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
25
Issue:
2009 1
Page:
74-78
Research Field:
Traffic and Transportation Engineering
Publishing date:
2009-03-30

Info

Title:
Anti-cracking mechanism of diatomite asphaltand diatomite asphalt mixture at low temperature
硅藻土沥青及沥青混合料低温抗裂机理
Author(s):
Tan Yiqiu1;  Shan Liyan1;  Fang Jun2;  Zhang Xingyou3
1School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, China
2Transportation and Logistics Engineering College, Dalian Maritime University, Dalian 116026, China
3Changchun Highway Designing Institute for Layout and Reconnaissance, Changchun 130000, China
谭忆秋1;  单丽岩1;  房军2;  张兴友3
1哈尔滨工业大学交通科学与工程学院, 哈尔滨 150090; 2大连海事大学交通与物流工程学院, 大连 116026; 3长春公路规划勘察设计院, 长春 130000
Keywords:
diatomite asphalt;  low temperature performance;  glass transition temperature;  differential scanning calorimetry;  anti-cracking mechanism
硅藻土沥青;  低温性能;  玻璃态转化温度;  差示热扫描分析;  抗裂机理
PACS:
U214.7
DOI:
10.3969/j.issn.1003-7985.2009.01.016
Abstract:
A kind of neat asphalt and three kinds of diatomite asphalt are tested using differential scanning calorimetry(DSC).The anti-cracking mechanism of diatomite asphalt is analyzed by DSC and the thermal stress restrained specimen test(TSRST)of the asphalt mixtures.The results show that the low temperature performance of diatomite asphalt is better than that of neat asphalt.The glass transition temperature can reflect the low temperature performance of the diatomite asphalt better and has a good relationship with breaking temperatures.Besides, the TSRST, the bending test, the compressing test and the contraction coefficient test are used to study the low temperature performance of the diatomite asphalt mixture.The results prove that the low temperature performance of the diatomite asphalt mixture is better than that of the neat asphalt mixture.The critical bending strain energy density and the compressing strain energy density of the diatomite asphalt mixture are greater than those of the neat asphalt mixture.After adding diatomite to the asphalt mixture, the contraction coefficient is reduced.Based on the above results, the anti-cracking mechanism of the diatomite asphalt mixture is analyzed from the angle of contraction performance and breaking energy.
对一种基质沥青和3种硅藻土沥青进行了差示热扫描分析, 并结合相应的混合料约束试件的温度应力试验分析了硅藻土沥青的低温抗裂机理.结果表明:硅藻土沥青有优于基质沥青的低温性能;玻璃态转化温度可以较好地反映硅藻土沥青的低温性能;玻璃态转化温度与破断温度有较高的相关性.另外还进行了相应的4种沥青混合料的低温弯曲试验、低温压缩试验和收缩系数试验.结果表明:硅藻土沥青混合料的低温性能优于基质沥青混合料;硅藻土沥青混合料临界弯曲应变能密度及压缩应变能密度均大于基质沥青混合料;沥青混合料加入硅藻土后收缩系数降低.在此基础上, 从混合料收缩性能和破坏能量2个角度分析了硅藻土沥青混合料的低温抗裂机理.

References:

[1] Yu Dongpo, Wang Lujun.Discussions on asphalt pavement cracking at low temperature [J].Technology of Highway and Transport, 2004(2):23-25.(in Chinese)
[2] Xiong Sihua, Fan Caoyuan.Design and construction technology of pavement about diatomite modified asphalt mixture[J].Journal of Chongqing Jiaotong University, 2003, 22(3):28-32.(in Chinese)
[3] Kietzman J H, Rodier C E.Effect of diatomite filler on performance of asphalt pavements[J].Transportation Research Record, 1984, 968:8-19.
[4] Taha Ramzi, Al-Rawas Amer, Al-Harthy Ali, et al.Use of cement bypass dust as filler in asphalt concrete mixtures[J].Journal of Materials in Civil Engineering, 2002, 14(4):338-343.
[5] Guo Tianlong, Song Jie.The use of diatomite modified asphalt mixture in Dabao highway[J].Yunnan Traffic Technology, 2002, 18(5):78-85.(in Chinese)
[6] Li Jian, Hao Peiwen, Mei Qingbin.A study on the performance of asphalt mixture modified by diatomite[J].Northeastern Highway, 2003, 26(4):16-18.(in Chinese)
[7] Fang Jun.Low temperature performance of diatomite asphalt and diatomite asphalt mixture[D].Harbin:School of Transportation Science and Engineering of Harbin Institute of Technology, 2005.(in Chinese)
[8] Zhang Xingyou.The mechanism study of modified asphalt and asphalt mixture by diatomite[D].Harbin:School of Transportation Science and Engineering of Harbin Institute of Technology, 2005.(in Chinese)
[9] Research Institute of Highway of Ministry of Communications.JTJ052—2000 Standard test methods of bitumen and bituminous mixtures for highway engineering[S].Beijing:China Communications Press, 2000.(in Chinese)
[10] Tan Yiqiu, Shao Xianzhi, Zhang Xiaoning.Research on evaluations approach to low-temperature performance of asphalt based on rheology characteristic of low temperature[J].China Journal of Highway and Transport, 2002, 15(3):1-15.(in Chinese)
[11] Tan Yiqiu, Sun Lijun, Tao Zhizheng, et al.Study on visco-elastical characteristics of asphalt in low-temperature under reverse cyclic loading[J].Journal of Tongji University:Natural Science, 2002, 30(6):690-694.(in Chinese)

Memo

Memo:
Biography: Tan Yiqiu(1968—), female, doctor, professor, tanyiqiu@hit.edu.cn.
Foundation item: The National Natural Science Foundation of China(No.50778057).
Citation: Tan Yiqiu, Shan Liyan, Fang Jun, et al.Anti-cracking mechanism of diatomite asphalt and diatomite asphalt mixture at low temperature[J].Journal of Southeast University(English Edition), 2009, 25(1):74-78.
Last Update: 2009-03-20