Low Compressibility at the Transition Zone of Railway Tracks Reinforced with Cement-Treated Gravel and a Geogrid under Construction

In the transition zone of railway tracks, track irregularities occur frequently due to differential settlement, which arises from difference between vertical supporting stiffness abutment and backfill. This is disadvantageous because it increases maintenance requirements deteriorates ride quality. To address this challenge, study proposes a strategy involving application cement-treated gravel reinforced with geogrids rigid facing walls. The subgrade for railways (RSR), can reduce residual settlement through initial construction backfill subsequent development wall, was constructed at as material. long-term behaviors during after on RSR period 16 months were evaluated by analyzing surface ground settlements, horizontal earth pressure, geogrid strain. minor net converges early stage construction, pressure approximately reduced level 54–63% Rankine active pressure.