Application of Prestressing Duct Vacuum Grouting Workmanship to Wuhan Tianxingzhou Changjiang River Rail-cum-Road Bridge

The prestressing duct vacuum grouting workmanship is an effective measure for improving the safety and durability of the post-tensioning concrete structures.In the Wuhan Tian-xingzhou Changjiang River Rail-cum-Road Bridge Construction Project,the principal part of the Bridge works is of prestressed concrete structure.In this paper,the application of the vacuum grouting workmanship to the Bridge is introduced and the equipment selection,fundamental principles,features,control measures and matters of attention in the application of the workmanship are described as well.