| 摘要 |
A grout bag assembly (1) is provided comprising an inflatable grout bag (2) (hereinafter termed a primary inflatable grout bag) having a top (4), bottom (6) and at least one side (8) and having in an expanded condition an axis extending between the top and bottom thereof. A secondary, independently inflatable, grout bag (14) expandable in the same direction as the primary inflatable bag is attached to one end of the primary inflatable grout bag. The secondary grout bag is employed, in use, subsequent to be installation of the primary grout bag to compensate for shrinkage in the height of the primary grout bag and to thereby supplement the overall axial dimension of the grout bag assembly, in use. |
