| 摘要: |
| 制备了普通橡胶沥青和再生胶改性沥青，测定了这2种橡胶沥青的各项技术指标，并对普通橡胶粉和再生胶颗粒的微观结构进行了研究.结果表明：与普通橡胶沥青相比，再生胶改性沥青的高温黏度大大降低，制备温度也稍微下调，且制备中无异味，更加环保.再生胶颗粒交联度低，活性化学键多，与沥青之间存在明显的化学作用；而普通橡胶粉交联度高，活性化学键少，与沥青之间几乎没有化学作用. |
| 关键词: 橡胶粉 再生胶颗粒 橡胶沥青 再生胶改性沥青 红外光谱 热分析 |
| DOI：10.3969/j.issn.1007 9629.2012.02.015 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目（51008075） |
|
| Research on Performance and Microstructure of Desulfurized Rubber Asphalt |
|
HE Liang1, MA Yu2, HUANG Xiao ming1, MA Tao1
|
|
1.School of Transportation, Southeast University, Nanjing 210096, China;2.School of Science, Chongqing Jiaotong University, Chongqing 400074, China
|
| Abstract: |
| Asphalt rubber(AR) and desulfurized rubber asphalt(DRA) were prepared, their technical indexes were measured. The microstructure of both desulfurized crumb rubber(DCR) and crumb rubber(CR) were investigated. The results indicate that the viscosity of desulfurized rubber asphalt is far lower than that of asphalt rubber at high temperature, and as it can be prepared at lower temperature than asphalt rubber without peculiar smell, it is environmentally friendly. Desulfurized crumb rubber contains more additives, and more active bonds than crumb rubber. There is less cross linking between the molecules of desulfurized crumb rubber. There is no obvious chemical combination between crumb rubber and asphalt, while chemical combination between desulfurized crumb rubber and asphalt is obvious. |
| Key words: crumb rubber(CR) desulfurized crumb rubber(DCR) asphalt rubber(AR) desulfurized rubber asphalt(DRA) FTIR thermal analysis |
