干旱区生态环境知识资源中心

In order to discuss the application scope of measurement of compaction degree of aeolian sand roadbed formed by compaction with immersion plus cutting ring method, powdery clay particles with different content are blended into the aeolian sand from the Gurbantunggut desert for testing. The results show that there is both expansion and sinking of the deformation of the aeolian sand with different compaction degree and the content of the powdery clay particles after immersion, but most of the deformation quantity is not significant. The measured results of the cutting ring method are quite volatile, and there are special circumstances, for example the difference is larger when the degree of compaction is lower and the content of the powdery clay particles is higher; but most of the average values are within the true value range or have a small difference, especially when the compaction degree is higher and powdery clay particles content is "moderate", most of them are within 0.015 g/cm(3). Taking into account that the compaction degree of the detection objects in actual work is generally higher, and the time from the beginning of the immersion to completion of the test is relatively short, on the basis of appropriate increase of parallel test, the test results of aeolian sand roadbed formed by dry compaction can basically meet the needs of the project.