水ガラス・ポリマーゲル充填による有道床軌道の補修法の開発

摘要

Where ballasted tracks include a high mix ratio of fine-particles, track irregularity tends to increase soon after the maintenance performed by tie tampers since the track maintenance impairs the density of the ballasted layer compacted by cyclic loading for trains. Therefore, in this study, we developed a method filling the gap under the sleepers with fill material for the realignment of tracks without impairing the density of the existing ballasted layer. Furthermore, we performed the test to confirm the validity of the foregoing method. Consequently, we could confirm that the foregoing method is effective for repairing the ballasted tracks.%水ガラス・ポリマーゲル充填工法について，充填材おrnよび充填装置の開発を行い，試験施工を行った。以下にrn得られた結果を示す。rn（1）水ガラス・ポリマー複合充填材を開発し，一面せんrn断試験から，列車荷重に耐える強度とともに粘着力rnによる耐流動性を有していることがわかった。