Self Healing Capacity of Asphalt Binders

武汉理工大学学报-材料科学版(英文版), 2012, 27(4): 794-796. doi: 10.1007/s11595-012-0550-z

^1, , ^2, , ^3, , ^4,

1.School of Science,Wuhan University of Technology,Wuhan 430070,China

2.State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Wuhan 430070,China

3.State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Wuhan 430070,China

4.State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Wuhan 430070,China

基金项目: The Scientific Research Foundation for Dr,Wuhan University of Technology,Wuhan,China

Self Healing Capacity of Asphalt Binders

PANG Ling ^1, , JIANG Huan ^2, , WU Shuxiang ^3, , WU Shaopeng ^4,

1.School of Science,Wuhan University of Technology,Wuhan 430070,China

2.State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Wuhan 430070,China

3.State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Wuhan 430070,China

4.State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Wuhan 430070,China

Keywords： asphalt binder

To test self healing capability of asphalt binders,three asphalt specimens (pure asphalt,modified asphalt and aged asphalt) were prepared.Every specimen was tested by dynamic shear rheometer (DSR).The temperature sweeps result indicates that both aging and SBS modifying influence the self healing capability of asphalt binder.The fatigue-heal-fatigue test was introduced to study the self healing capability of asphalt in its serving periods.Furthermore,three different periods (0.5 h,1 h,3 h) were set up to study the influence of rest time on fatigue time.It is concluded that longer rest time,less load will delay the appearance of cracks and extend the service life of asphalt binders.

参考文献

[1]	Electrical conductivity of asphalt mortar containing conductive fibers and fillers[J].Construction and Building Materials,2009(10):3220-3224.
[2]	J. Qiu;M.F.C. van de Ven;S.P. Wu;J.Y. Yu;A.A.A. Molenaar .Investigating self healing behaviour of pure bitumen using Dynamic Shear Rheometer[J].Fuel,2011(8):2710-2720.

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Self Healing Capacity of Asphalt Binders

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