[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()

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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

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

Keywords:

diatomite asphalt;  low temperature performance;  glass transition temperature;  differential scanning calorimetry;  anti-cracking mechanism

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.

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.

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