摘要
为了评价SDG密度仪在路基填土密度检测应用中的测试效果,采用现场测试并结合室内模拟试验等方法进行了系统的试验.试验结果显示:SDG密度仪具有良好的稳定性,在适合的条件下测试值能比较准确地反映填土的密度,利用提出的修正模型,可以进一步提高SDG密度仪填土密度测试的适用范围并有助于提高测试精度.
A series of site and laboratory tests were carried out in order to evaluate the detecting effectiveness for subgrade compaction. Based on test results, SDG shows preferable stability in subgrade compaction detecting, and the test values can response the density of compacted fill accurately in suitable range. With modified model, it will be possible to use SDG to density test of compacting fill in wider range.
出处
《北京工业大学学报》
CAS
CSCD
北大核心
2013年第12期1835-1842,共8页
Journal of Beijing University of Technology
基金
住房和城乡建设部科技计划项目资助(2011-K5-14)
关键词
SDG密度仪
压实度
灌砂法
干密度
无损检测
SDG density gauge
compaction degree
sand cone method
dry density
nondestructive gauge
