GPR을 이용한 콘크리트 궤도 하부노반 상태평가

The applicable methods of the concrete track roadbed investigation are not only non-destructive tests such as GPR test, electricity resistivity test, but also standard penetration test(SPT), elastic wave tomography, etc. Especially, the application of the GPR tests has been increased because of the rapid field investigation, the objective and reliable achievements. This study is conducted to explore GPR tests in the concrete track roadbed made for experimental test. So the results of this study were presented the basic data for evaluation of subgrade state in the concrete track roadbed.