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介绍了现场CBR试验的基本原理和测试方法,应用现场CBR值评价高速公路土石混填路堤的压实效果,并与传统的干密度测试、沉降差测试和弯沉测试结果进行了对比分析。结果表明,土石混填路堤的现场CBR值与干密度测试、沉降差测试和弯沉测试成果相当吻合。根据试验结果,建立了CBR值和干密度之间的关系式,并在土石混填路堤填筑质量控制中得到应用,取得了较好的经济效益。
The basic principle and test method of CBR test are introduced. The compaction effect of embankment on expressway with embankment is evaluated by on-site CBR value, and compared with traditional dry density test, settlement difference test and deflection test results. The results show that the on-site CBR value of soil-stone embankment is in good agreement with the results of dry density test, settlement difference test and deflection test. According to the test results, the relationship between CBR value and dry density has been established and applied to the quality control of embankment filled with earth and rock, and achieved good economic benefits.