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이춘길(Lee Choon-Kil),김관형(Kim Kwan-Hyung) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
The ballast, one of track components, plays an essential role as intermedium in transmitting train load to subgrade safely, and the deterioration of ballast directly effects the growth of track irregularity. In this study, we determined the main factor of ballast deterioration was miniature of ballast gravel caused MTT(Multiple Tie Tamper) works and accumulated traffic loads. Toestimate the deterioration characteristics of ballast, we carried out field test through track construction for test and the model test simulating the actual operation environment, have done a comparative analysis with the sample"s result(crushing rate) of high-speed railroad runningactually.