密度测定方法对废旧橡胶颗粒沥青混合料空隙率的影响

The effect of density measuring method on the porosity of waste rubber particles asphalt mixture

空隙率是影响路面使用性能的一个重要指标,它的变化将直接影响道路的使用性能,而空隙率又受密度测定方法的影响。文章采用不同的测定方法,对废旧橡胶颗粒沥青混合料的密度进行了检测,并分别计算其空隙率,通过与普通沥青混合料作对比,得出掺入橡胶颗粒后沥青混合料空隙率的变化规律,并且对不同方法下得出的空隙率进行比较分析,最终得出如何确定出合理有效的沥青混合料密度测定方法,从而保证沥青混合料的路用性能。

Porosity is an important index that can affect pavement performance and its change will affect pavement performance directly.Porosity is affected by density measuring method.This paper uses different measuring methods to measure the density of waste rubber particles asphalt mixture and its density is calculated respectively.Compared with common asphalt mixture,the change law of porosity of asphalt mixture mixed with rubber particles is concluded.Through the comparative analysis of porosity in different methods,how to ensure reasonable and effective density measuring method of asphalt mixture is concluded,which can guarantee the pavement performance of asphalt mixture.