High-temperature creep properties of asphalt-rubber and mixture with Sasobit warm mix additives(PDF)
长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]
- Issue:
- 2015年06期
- Page:
- 16-23
- Research Field:
- 道路工程
- Publishing date:
Info
- Title:
- High-temperature creep properties of asphalt-rubber and mixture with Sasobit warm mix additives
- Author(s):
- HE Liang; LING Tian-qing; MA Yu HE Zhao-yi; MA Tao; HUANG Xiao-ming
- 1. National and Local Joint Engineering Laboratory of Traffic Civil Engineering Materials, Chongqing Jiaotong University, Chongqing 400074, China; 2. Key Laboratory for Special Region Highway Engineering of the Ministry of Education, Chang’an University, Xi’an 710064, Shaanxi, China; 3. Nottingham Transportation Engineering Centre, The University of Nottingham, Nottingham NG7 2RD, UK; 4. School of Transportation, Southeast University, Nanjing 210096, Jiangsu, China
- Keywords:
- road engineering; warm mix asphalt-rubber; creep property; high-temperature performance; Sasobit
- PACS:
- U416.217
- DOI:
- -
- Abstract:
- In order to study high-temperature creep properties of asphalt-rubber and mixture with Sasobit warm mix additives, warm mix asphalt-rubber with 3% Sasobit dosage was produced, molding temperature and basic road performance of Sasobit warm mix asphalt-rubber mixture were determined. High-temperature properties of Sasobit warm mix asphalt-rubber pavement were evaluated comprehensively through binder and mixture creep tests, and fitting analysis of mixture Burgers model parameters was done. The result shows that the high-temperature creep performance of asphalt-rubber binder is better than that of SBS modified asphalt, and Sasobit improves the high-temperature performance of asphalt-rubber further. High temperature performance of SBS modified asphalt mixture is better than that of Sasobit warm mix asphalt-rubber mixture and asphalt-rubber mixture. 3% Sasobit dosage can not only effectively reduce the construction temperature of asphalt-rubber mixture by 20 ℃, but also improve the high-temperature performance but not reduce the low temperature performance too much. With the temperature increase and confining pressure emergence, Sasobit can better promote high-temperature performance of asphalt-rubber mixture, making it close to that of SBS modified asphalt mixture.
Last Update: 2015-11-23