[1]徐鸥明,韩森,牛冬瑜,等.测试条件对SBS改性沥青表观黏度影响研究[J].郑州大学学报(工学版),2015,36(01):83-87.[doi:10.3969/ j. issn.1671 -6833.2015.01.020]
　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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测试条件对SBS改性沥青表观黏度影响研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
36
期数:
2015年01期
页码:
83-87
栏目:
出版日期:
2015-01-10

文章信息/Info

Title:
On the Effect of ’Testing Conditions on the Apparent Viscosity of SBS Modified Asphalt
作者:
徐鸥明; 韩森; 牛冬瑜; 刘亚敏
1.长安大学交通铺面材料教育部工程研究中心,陕西西安710061; 2.长安大学特殊地区公路工程教育部重点实验室,陕西西安710064
Author(s):
XU Ou-ming1; HAN Sen2; NIU Dongyu1; LIU Yamin2
1.Engineering Research Center of Transportation Materials of Ministry of Education,Chang’an University,Xi’an 710061,Chi-na; 2.Key Laboratory of Highway Engineering in Special Region of Education Ministry,Chang’ an University , Xi’ an 710064,China
关键词:
SBS改性沥青; 表观黏度; 时间; 温度; 转速
Keywords:
SBS modified asphalt ;  apparent viscosity ;  time ;  temperature ; shear rate
分类号:
U416.214
DOI:
10.3969/ j. issn.1671 -6833.2015.01.020
文献标志码:
A
摘要:
黏度是沥青的一项重要性质,与沥青混合料施工温度和施工和易性密切相关,为了评价测试条件对黏度的影响,采用布洛克菲尔德黏度计,研究了不同时间、温度和转速条件下SBS改性沥青表观黏度变化情况.结果表明:SBS改性沥青表观黏度值随时间增加逐渐趋于稳定,温度越高、剪切速率(转速)越大,黏度趋于稳定的时间越短,且初始黏度与稳定黏度之间的差值越小;当温度超过150 ℃时,黏度与转速无关;不同温度下进行SBS改性沥青黏度测定时,转速应不小于20 r/min.
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.

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