干燥的风积沙对扰动很敏感,现行有关规程中的密度测定方法对其均不太适合。本文介绍的方法是通过浸水润湿风积沙,再用环刀法测定密度。试验分析表明,当风积沙的压实度达90%以上时,干沙浸水所导致的体积变化量很小;将此变化量忽略而以环刀法测定的湿沙干密度来表征浸水前干沙的干密度,则在精度及准确性方面是可以满足公路工程需要的。 Dry aeolian sand is sensitive to perturbation, and the density determination methods in current relevant regulations are not suitable for them. This article describes the method is by wetting aeolian sand, and then ring knife method to determine the density. The experimental analysis shows that when the compaction degree of aeolian sand reaches 90% or more, the volume change caused by dry sand immersion is small. The variation of dry sand volume is neglected and the dry sand densities measured by ring-knife method are used to characterize Dry density of dry sand, then the accuracy and accuracy is to meet the needs of highway engineering.