摘要
运用针入度指数法及BBR试验两种方法对我省曾采用的两种沥青进行低温性能评价,根据我省的气候条件,两种沥青均不宜直接作为沥青结合料,应采取改性措施。针入度指数法是评价沥青感温性的重要指标,操作简单;BBR试验比较科学地反映沥青材料的粘弹性,对工程设计中沥青等级的确定和品质的验证有较强指导性。
Penetration test is a concise and important way to appraise the asphalt temperature susceptibility. BBR test can reflect the viscoelasticity of asphalt material scientifically, so it plays an important part in verifying the quality and grade of asphalt material in engineering design.
出处
《吉林交通科技》
2004年第2期35-36,共2页
Jilin Transportation Science & Technology