众所周知,煤沥青具有温度稳定性差、低温变形能力小、容易老化等缺点。因蒽油和其他煤馏重油类的缺乏,国内常用煤焦油和硬煤沥青配制筑路用煤沥青,而且,这种配制往往在施工工地自行解决。煤焦油中低沸点成分的含量比较多,用它和硬煤沥青配制成的筑路煤沥青比用蒽油或煤馏重油配制的质量更差。提高煤沥青质量的一种最有效 As we all know, coal tar pitch with poor temperature stability, low temperature deformation ability, easy to aging and other shortcomings. Due to the lack of anthracene oil and other coal-fired heavy oil, domestic coal tar and hard coal bitumen are often used to make coal tar pitch for road construction. Moreover, such preparation is often solved on construction sites. Coal tar content of low boiling point components are more, with it and hard coal asphalt road asphalt formulated with anthracene oil or coal distillates prepared worse quality. One of the most effective ways to improve coal tar pitch quality