보조도상에서의 세립분 함량에 따른 동상성 실험

초록

Despite the global warming, recent Korea winter temperature shows lowest since last three decade. In this research, variation of frost heave with moisture content on the subballast containing fines is studied. The experiment was conducted based on the regulation of Korea Rail Network Authority. At the same time, mixed ratio of fines with ballast was adjusted from 15% to 25%. The results showed that the amount of frost heave was the highest at 25% mixture with 90% degree of saturation. It means that it could be vulnerable to the damage of the concrete track from subsidence.