摘要
通过动稳定度试验对七种不同级配的ＳＭＡ混合料高温稳定性进行了试验研究，试验结果表明：适当增加混合料的粗骨料含量和矿粉用量，有利于提高混合料的高温稳定性。采用高粘度的改性沥青，选择合理的集料级配，控制敏感粒径的含量，是提高ＳＭＡ混合料高温稳定性的关键。
By means of wheel tracking test on seven SMA mixtures with variant gradation,capability of rut-resistance of SMA mixtures at high temperature was investigatedTest results showed that properly increasing the content of course aggregate and mineral fines is advantageous to increasing the capability of rut-resistance of SMA mixture at high temperatureThrough use of modified asphalt with high viscosity,selecting the reasonable aggregate gradation and controlling the content of sensitive grain size,it is the key for increasing the capability of rut-resistance of SMA mixture at high temperature
出处
《石油沥青》
1998年第2期29-34,共6页
Petroleum Asphalt
关键词
SMA混合料
高温稳定性
级配
试验
沥青
SMA mixture Rut-stability at high temperature Gradation Test
