Ballast track has been widely used because of convenient maintenance. However, ballast deterioration requires frequent maintenance due to increasing speed, weight, and traffic of trains. Fouling is known as deterioration and expedites irregular settlement. In this paper, non-destructive methods were applied and investigated in order to evaluate ballast conditions such as thickness of fouling layer. Ground Penetrating Radar (GPR) and Dynamic Cone Penetrating (DCP) Test resulted in reasonable detection of fouled layer.

• 장승엽(한국철도기술연구원 고속철도연구본부 첨단인프라연구팀 책임연구원, 공학박사) | Jang Seung Yup
• 최영태(한국철도기술연구원 고속철도연구본부 첨단인프라연구팀 선임연구원, 공학박사) | Choi Yeong Tae 교신저자
• 신지훈(한국철도기술연구원 고속철도연구본부 첨단인프라연구팀 학생연구원) | Shin Ji Hoon