Control of Frost Boiling Disease on Ballastless Track Subgrade for a High-speed Railway by Glue-injection Method

The main diseases on ballastless track of high-speed railway include own diseases of slab structure,split of support layer( CA mortar layer),and frost boiling arising out of hanging empty of roadbed base plate etc. Combined the sufferings from such frost boiling in some sections of a passenger dedicated line,this paper discussed the reasons,control scheme,quality inspection and the control effect,and introduced a new control technology,i. e. glue-injection,with its application therein. It was found that the control effect is obvious.