对改性乳化沥青的主要影响因素研究  

Study of Influence Factors on Modified Emulsified Asphalt Performance

作　　者：陈改霞[1] 贾秦龙[1] 尹艳平[1] 王璐[2] 

机构地区：[1]长安大学材料科学与工程学院,西安710061 [2]长安大学公路学院,西安710064

出　　处：《石油沥青》2013年第2期38-42,共5页Petroleum Asphalt

基　　金：新世纪优秀人才支持计划资助(MET-10-027);中央高校基本科研业务费专项资金(CHD2010D004)

摘　　要：改性乳化沥青是一种高速公路沥青路面养护材料,研究影响其使用性能的主要因素具有重要的意义。通过对不同掺量的乳化剂、SBS改性剂以及不同pH环境条件下的改性乳化沥青性能进行测试分析,结果显示:随着乳化剂掺量的增加,乳化效果增强,沥青性能先升高后降低,当乳化剂为1.5%时使乳化效果和沥青性能相对较佳;随SBS改性剂含量的增加,沥青性能提高,乳化效果降低,其最佳用量选4%较合适;随着pH的增大,沥青性能与乳化效果产生不同的规律,存在pH值的范围为2.4～2.6能够产生最优效果。Modified emulsified asphalt is a kind of material for highway pavement maintenance. Researc- hing the main influence factors of the performance have important significance. The performances of modified emulsified asphalt were tested and analysed according to the different dosage of emulsifier, SBS modifying a- gent and different pH environment. The results showed ： with the increase of emulsifier dosage, emulsification effect enhanced, asphalt performance increased at first, then decreased, when 1.5 % emulsifier was used, that emulsification effect and asphalt performance were relatively better; with the increase of SBS modifying a- gent, the asphalt performance was improved and emulsification effect was reduced, the best dosage is 4% With pH increased, asphalt performance and emulsification effect produced different law, the effect was opti- mal when pH value was 2. 4 -2. 6.

关 键 词：改性乳化沥青乳化剂改性剂pH值 

分 类 号：U414[交通运输工程—道路与铁道工程]