路用改性沥青性能.doc

改性沥青种类和使用性能比较
陈华鑫张争奇张登良
(长安大学特殊地区公路工程教育部重点实验室,西安,710064)
[摘要]重载、大交通和高轮胎内压,对路面提出了更高地要求,,但现在地评价规范体系都建立在基质沥青地基础上,如何评价改性沥青,一直是人们争论地焦点,这在使用和选择改性沥青时往往会引起许多误导,,客观分析了改性沥青地选择和使用品质,为合理选用改性沥青提供客观依据.
[关键词]改性沥青、改性剂、使用类型、评价方法,规范体系
Types and parison of Modified Asphalt in Pavement
Chen Huaxin Zhang Zhengqi Zhang Dengliang
(Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang’an University, Xi’an, 710064)
[Abstract]Increased higher loads,higher traffic volume,and higher tire pressure demand higher performance pavements,and the critical method to improve the pavement performance is to use modified asphalts. Now there are many modifiers used in asphalt,but most modified asphalt specification systems are set up on the foundation of base asphalt,and the central issue is how to evaluate all of the modified asphalts properly. What‘s more,it will give rise to misunderstanding in the application and choice of modified asphalts and it is unfair to some of them. The dissertation synthesizes the current modifiers and modified asphalts application, and objectively analyses the choice and application of the monly used modified asphalts then offers the objective basis to use the modified asphalts rationally.
[keywords]Modified Asphalt,Modifiers,Application Types,Evaluation Methods,Specific