4COENRAAD E. Recent development in slab track[J]. Euro- pean Railway Review, 2003,9 (2) : 81-85.
5SHIGERU M, HIDEYUKI T, MASAO U, et al. The meeha nism of railway tracks[J]. Japan Railway and Transportation Review, 1998,3 : 38-45.
6SONG H, DO J Y, SOH Y S. Feasibility study of asphalt- modified mortars using asphalt emulsion[J]. Construction and Building Materials, 2006,20 (5) : 331-338.