排水性沥青混合料填料对比研究  

Research on Appropriate Filler for Drainage Asphalt

作　　者：唐国奇[1] 刘清泉[1] 曹东伟[1] 

机构地区：[1]交通部公路科学研究院,北京100088

出　　处：《公路交通科技》2006年第1期9-11,19,共4页Journal of Highway and Transportation Research and Development

基　　金：交通部西部交通建设科技项目(200131822332)

摘　　要：在普通沥青混合料中,水泥、石灰取代部分矿粉用作填料可以改善其水稳性;排水性沥青混合料是比其他类型沥青混合料遭受水侵蚀更严重的混合料。文章通过严格的常规和长期水稳性试验检验,分析评价掺加不同种类填料和不同掺配比例对排水性沥青混合料的适用性。试验表明:消石灰取代部分矿粉对改善排水性沥青混合料的水稳性效果显著,生石灰的长期水稳效果不稳定,普通硅酸盐水泥对水稳性的改善作用较小。It is reported that Portland cement and lime improves asphalt mixture＇s water stability. Compared with other asphalt mixture, drainage asphalt is mere sensitive to moisture damage, Through stringent normal and long-period tests for water resistance, this paper analyzes the suitability of different kinds of fillers and different dosages used in drainage asphalt. Main tests indicate that hydrated lime mixed into mineral powder is the most suitable filler for drainage asphalt; quicklime is instable in terms of short and long period water stability; Portland eement have only a little improvement for water stability of drainage asphalt.

关 键 词：排水性沥青混合料 填料 掺配比例 水稳性 

分 类 号：U414[交通运输工程—道路与铁道工程]