基床沥青混凝土层全温度域的作用机理与动态演变行为研究
项目来源
项目主持人
项目受资助机构
立项年度
立项时间
项目编号
项目级别
研究期限
受资助金额
学科
学科代码
基金类别
关键词
参与者
参与机构
项目受资助省
项目结题报告(全文)
1.Evaluation on low temperature characteristics of SBS/CR modified asphalt binder under different aging conditions
- 关键词:
- Energy dissipation;Viscoelasticity;Binders;Styrene;Low temperature effects;Temperature;Damping;Bending beam rheometer;Dissipated energy ratios;Low service temperatures;Low temperature characteristics;Low temperature performance;Modified asphalt binders;Styrene butadiene styrenes;Viscoelastic modeling
- Zhou, Jie;Chen, Xianhua;Xu, Gang;Zhang, Hanyu
- 《4th International Conference on Civil Engineering and Materials Science, ICCEMS 2019 and the 2nd International Conference on Nanomaterials, Materials and Manufacturing Engineering, ICNMMS 2019》
- 2019年
- May 17, 2019 - May 19, 2019
- Bangkok, Thailand
- 会议
This study discussed the low temperature performance of styrene-butadiene-styrene (SBS)/crumb rubber (CR) modified asphalt under different aging process. The bending beam rheometer (BBR) test was conducted to compare the low temperature performance of SBS and SBS/CR modified asphalt at three different temperatures. The continuous low service temperature of two modified asphalt binders was calculated based on the ASTM method. The simple fractional viscoelastic model was implemented to better describe the creep behaviour of asphalt at low temperatures from the BBR test results. The damping ratio and dissipated energy ratio were also derived from the simple fractional model to assess the low temperature performance of asphalt from the aspect of energy. The analysis results showed that adding CR to SBS modified asphalt was beneficial to reduce the low service temperature and increase the values of damping ratio and dissipated energy ratio before and after the aging process. It has been proved that the low temperature performance of SBS/CR modified asphalt is much better than that of SBS modified asphalt under different aging conditions.
...
© Published under licence by IOP Publishing Ltd.2.Evaluation on low temperature characteristics of SBS/CR modified asphalt binder under different aging conditions
- 关键词:
- Energy dissipation ; Viscoelasticity ; Binders ; Styrene ; Low temperature effects ; Temperature ; Damping;Bending beam rheometer ; Dissipated energy ratios ; Low service temperatures ; Low temperature characteristics ; Low temperature performance ; Modified asphalt binders ; Styrene butadiene styrenes ; Viscoelastic modeling
- ZhouJie;ChenXianhua;XuGang;ZhangHanyu
- 《4th International Conference on Civil Engineering and Materials Science, ICCEMS 2019 and the 2nd International Conference on Nanomaterials, Materials and Manufacturing Engineering, ICNMMS 2019》
- 2019年
- May 17, 2019 - May 19, 2019
- Bangkok, Thailand
- 会议
This study discussed the low temperature performance of styrene-butadiene-styrene (SBS)/crumb rubber (CR) modified asphalt under different aging process. The bending beam rheometer (BBR) test was conducted to compare the low temperature performance of SBS and SBS/CR modified asphalt at three different temperatures. The continuous low service temperature of two modified asphalt binders was calculated based on the ASTM method. The simple fractional viscoelastic model was implemented to better describe the creep behaviour of asphalt at low temperatures from the BBR test results. The damping ratio and dissipated energy ratio were also derived from the simple fractional model to assess the low temperature performance of asphalt from the aspect of energy. The analysis results showed that adding CR to SBS modified asphalt was beneficial to reduce the low service temperature and increase the values of damping ratio and dissipated energy ratio before and after the aging process. It has been proved that the low temperature performance of SBS/CR modified asphalt is much better than that of SBS modified asphalt under different aging conditions. © Published under licence by IOP Publishing Ltd.
...
