| 橡胶沥青的改性机理 |
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| 引用本文： | 王笑风,曹荣吉. 橡胶沥青的改性机理[J]. 长安大学学报(自然科学版), 2011, 0(2): 6-11 |
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| 作者姓名： | 王笑风 曹荣吉 |
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| 作者单位： | 长安大学道路施工技术与装备教育部重点实验室;河南省交通规划勘察设计院有限责任公司;江苏省交通科学研究院; |
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| 基金项目： | 河南省交通科技重点项目(2009D102) |
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| 摘 要： | 针对橡胶沥青改性机理的复杂性,采用扫描电镜、红外光谱、差热分析、微观结构分析、组分分析及胶粉化学分析等方法,研究了橡胶沥青混溶体系的改性机理。结果表明:胶粉溶胀后互相粘连,形成网络结构,基质沥青由匀质体变成了胶粉和沥青构成的两相连续共混结构体系;胶粉与基质沥青间以物理溶胀为主,但存在弱化学反应,且随时间延长,化学反应越明显;溶胀胶粉形成阻尼作用,提高了橡胶沥青粘度;沥青的改性源于溶胀胶粉构成的网络结构和胶粉脱硫降解对沥青组分的改善作用;天然橡胶对沥青的改性效果优于合成橡胶。
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| 关 键 词： | 道路工程 沥青 橡胶粉 改性机理 物理共混 化学反应 |
Rubber asphalt modification mechanism |
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| WANG Xiao-feng,CAO Rong-ji. Rubber asphalt modification mechanism[J]. JOurnal of Chang’an University:Natural Science Edition, 2011, 0(2): 6-11 |
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| Authors: | WANG Xiao-feng CAO Rong-ji |
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| Affiliation: | WANG Xiao-feng1,2,CAO Rong-ji3 (1.Key Laboratory for Highway Construction Technology and Equipment of Ministry of Education,Chang'an University,Xi'an 710064,Shaanxi,China,2.Henan Province Communications Planning,Survey & Design Institute Co Ltd,Zhengzhou 450052,Henan,3.Jiangsu Province Transportation Research Institute Co Ltd,Nanjing 211112,Jiangsu,China) |
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| Abstract: | In light of the complexity of rubber asphalt modification mechanism,such means as scanning electron microscopy,infrared spectroscopy,differential thermal analysis,microscopic structure analysis,component analysis were adopted to study the components of the asphalt before and after modifying,and chemical analysis of rubber powder are adopted to study the modification mechanism of asphalt rubber blending system.The results indicate that the swollen rubber powder is mutually-adhered to form a network structure... |
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| Keywords: | road engineering asphalt rubber powder modification mechanism physical blend chemical reaction |
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