On the Effect of ’Testing Conditions on the Apparent Viscosity of SBS Modified Asphalt
[1]XU Ou-ming,HAN Sen,NIU Dongyu,et al.On the Effect of ’Testing Conditions on the Apparent Viscosity of SBS Modified Asphalt[J].Journal of Zhengzhou University (Engineering Science),2015,36(01):83-87.[doi:10.3969/j.issn.1671-6833.2015.01.020]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
36
Number of periods:
2015 01
Page number:
83-87
Column:
Public date:
2015-01-10
- Title:
- On the Effect of ’Testing Conditions on the Apparent Viscosity of SBS Modified Asphalt
- Keywords:
- SBS modified asphalt ; apparent viscosity ; time ; temperature ; shear rate
- CLC:
- U416.214
- Abstract:
- Viscosity is an important property of asphalt,and has a close relationship with the construction tem-perature and workability of the asphalt mixtures. In order to evaluate the effect of testing conditions on the vis-cosity,the apparent viscosity of SBS modified asphalt under different times,different temperatures,and differ-ent shear rates is studied by using Brookfield viscometer. The results shows that the apparent viscosity of SBSmodified asphalt is tending towards stability with time increasing gradually. The higher the temperature and thegreater the shear rate,the shorter the time for viscosity stabilizing and the smaller the difference between theinitial viscosity and stable viscosity. When the testing temperature exceeds 150 ℃,the variation of shear ratehas little effect on the viscosity. The shear rate should be no less than 20RPM when the viscosity of SBS modi-fied asphalt is measured at different temperatures.
- References:
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