Study on Compaction Characteristics of Aeolian Sand

As aeolian sand is a particularkind of subgrade material, its compaction degree plays a major role in highway durability. Because of the poor engineering properties of aeolian sand, its compaction technology is always a major problem in highway construction. The compaction test, dry vibration test and water vibration test are used here to study the compaction characteristics of aeolian sand.Unlike conventional engineeringmaterials, the compaction curve shows a special transverse S type,and the dry density has two peaks alongwith the change ofwatercontent,thatis,the aeolian sand can be compacted under the bestmoisture content and when the moisture content is 0. The dry vibration test and water vibration test show that the dry density of sand has one peak under the fixed vibration frequency and amplitude, and the time ofvibration is about4 min~ 6 min.Through experimental comparison and analysis,itisknown thatthe aeolian sand can achieve the maximum dense in water vibration.