摘要
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。
Because the dry wind-blown sand is sensitive to disturbance, the methods for measuring density in current regulations are not appropriate to it. The method which soaks the wind-blown sand before measuring the density by ring sampler is introduced. The results show that the change of volume is little by soaking the wind-blown sand when the degree of compaction of wind-blown sand reaches its 90%. In field test, the density of the soaking wind-blown sand is measared by using ring sampler to replace the density of dry wind-blown sand, which can meet the precision and veracity in highway engineering.
出处
《公路》
北大核心
2005年第12期128-132,共5页
Highway
基金
交通部西部交通建设科技项目--<沙漠地区风积沙路用性能研究>
项目号:200131879709
关键词
道路工程
密度
环刀法
风积沙
压实度
road engineering
density
ring sampler
wind-blown sand
degree of compaction
