Experimental Study on Settlement Behavior of Ballasted Tracks with Polymer Compound-Coated Gravel

The ballast used in ballasted railway tracks transmits load from the rails and ties to subgrade during train travel, directly affects overall track support performance elastic behavior of track. Due material limitations ballast, it is difficult quantitatively manage its performance, status, shape maintenance, use requires continuous maintenance management work. In this study on a proposed material, box tests numerical analyses were performed examine that has gravel coating layer can be semi-permanently while maintaining against impacts, abrasion, friction. results show coated ballast’s ensured constant stiffness comparison normal ballast.