沥青混合料高温性能试验的对比研究

A comparative study of thermal stability test methods for asphalt mixtures

通过对同种沥青混合料进行多种高温性能试验,对不同的试验方法进行了对比研究。试验结果表明:对于象SMA这种粗集料嵌挤作用比较强的混合料,使用无侧限的试验评价其高温抗变形能力会忽略掉一部分集料的嵌挤力,并有可能将其抗高温变形性能归为差的一类。

This paper carried a variety of high - temperature performance test on the same kind ot asphalt mixture. The results showed that for the framework bituminous mixture, such as SMA, using a test that has no sufficient constraint to evaluate thermal stability of HMA will overlook part of the interlocking of aggregates, and made a wrong conclusion on the high - temperature performance of HMA.