交通部《公路沥青路面施工技术规范》50号A级沥青的开发与应用  

Development and Application of Grade - A 50 Asphalt Which Meets Technical Specifications for Construction of Highway Asphalt Pavements Rssued by the Ministry of Communications

作　　者：郑伟达[1] 

机构地区：[1]中国石化镇海炼化分公司,镇海315207

出　　处：《石油沥青》2012年第2期57-62,共6页Petroleum Asphalt

摘　　要：交通部《公路沥青路面施工技术规范》50号A级沥青具有针入度小、粘度大、软化点高的特点,其高温性能优良,温度敏感性好。通过实验室试验和工业装置生产,从①科威特原油减压深拔,②科威特70号A级沥青与50号沥青调合,③科威特原油掺炼巴士拉原油减压深拔这三个方面对50号A级道路沥青进行研制。通过研制得出交通部JTG F40一2004《公路沥青路面施工技术规范》中50号A级沥青的关键指标是膜前10℃延度。The grade - A 50 asphalt which meets Technical Specifications for Construction of Highway Asphalt Pavements issued by the Ministry of Communications has the characters of small penetration, high viscosity and softening point, so it has excellent high temperature properties and temperature susceptibility. This paper explained the development and application of grade - A 50 asphalt through the following ways： a）. Kuwait crude oil had been deep＇vacuum distilled, b）. Kuwait grade - A 70 asphalt and 50 asphalt had been blended, c）. Kuwait and Basra mixed crude oil had been deep vacuum distilled, which had been verified both in laboratory and commercial unit. This paper desired to emphasize that the ductility at 10 ℃ before TOFT was the key property among those of grade - A 50 asphalt.

关 键 词：50号A级沥青 科威特原油 减压深拔 10℃延度 

分 类 号：U414[交通运输工程—道路与铁道工程]